diff --git a/BUILD.gn b/BUILD.gn
index 2b29672..16a841d 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -188,11 +188,12 @@
         "absl/profiling:periodic_sampler_test",
         "absl/status:statusor_test",
         "absl/strings:ascii_test",
-        "absl/strings:cord_internal_test",
         "absl/strings:cord_rep_btree_navigator_test",
         "absl/strings:cord_rep_btree_reader_test",
         "absl/strings:cord_rep_btree_test",
+        "absl/strings:cord_rep_concat_test",
         "absl/strings:cord_rep_consume_test",
+        "absl/strings:cord_rep_crc_test",
         "absl/strings:cordz_functions_test",
         "absl/strings:cordz_info_statistics_test",
         "absl/strings:cordz_info_test",
diff --git a/CMake/AbseilDll.cmake b/CMake/AbseilDll.cmake
index fa323ff..7c82725 100644
--- a/CMake/AbseilDll.cmake
+++ b/CMake/AbseilDll.cmake
@@ -204,14 +204,17 @@
   "strings/internal/charconv_parse.h"
   "strings/internal/cord_internal.cc"
   "strings/internal/cord_internal.h"
-  "strings/internal/cord_rep_consume.h"
-  "strings/internal/cord_rep_consume.cc"
   "strings/internal/cord_rep_btree.cc"
   "strings/internal/cord_rep_btree.h"
   "strings/internal/cord_rep_btree_navigator.cc"
   "strings/internal/cord_rep_btree_navigator.h"
   "strings/internal/cord_rep_btree_reader.cc"
   "strings/internal/cord_rep_btree_reader.h"
+  "strings/internal/cord_rep_concat.cc"
+  "strings/internal/cord_rep_crc.cc"
+  "strings/internal/cord_rep_crc.h"
+  "strings/internal/cord_rep_consume.h"
+  "strings/internal/cord_rep_consume.cc"
   "strings/internal/cord_rep_flat.h"
   "strings/internal/cord_rep_ring.cc"
   "strings/internal/cord_rep_ring.h"
diff --git a/CMake/install_test_project/test.sh b/CMake/install_test_project/test.sh
index 5a78c92..aecbb8f 100755
--- a/CMake/install_test_project/test.sh
+++ b/CMake/install_test_project/test.sh
@@ -58,7 +58,7 @@
   -DBUILD_TESTING=ON \
   -DBUILD_SHARED_LIBS="${build_shared_libs}"
 make -j $(nproc)
-ctest -j $(nproc)
+ctest -j $(nproc) --output-on-failure
 make install
 ldconfig
 popd
diff --git a/README.chromium b/README.chromium
index 155b761..2c4bb83 100644
--- a/README.chromium
+++ b/README.chromium
@@ -4,7 +4,7 @@
 License: Apache 2.0
 License File: LICENSE
 Version: 0
-Revision: 3b22e57740b8aec4920c4cfd76b78b3a4fcb2bb5
+Revision: 39f46faa69614b429b97bdad737097fa0497b06d
 Security Critical: yes
 
 Description:
diff --git a/absl/base/config.h b/absl/base/config.h
index d3cad68..ae7a5a1 100644
--- a/absl/base/config.h
+++ b/absl/base/config.h
@@ -520,22 +520,41 @@
 #error "absl endian detection needs to be set up for your compiler"
 #endif
 
-// macOS 10.13 and iOS 10.11 don't let you use <any>, <optional>, or <variant>
-// even though the headers exist and are publicly noted to work.  See
-// https://github.com/abseil/abseil-cpp/issues/207 and
+// macOS < 10.13 and iOS < 11 don't let you use <any>, <optional>, or <variant>
+// even though the headers exist and are publicly noted to work, because the
+// libc++ shared library shipped on the system doesn't have the requisite
+// exported symbols.  See https://github.com/abseil/abseil-cpp/issues/207 and
 // https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes
+//
 // libc++ spells out the availability requirements in the file
 // llvm-project/libcxx/include/__config via the #define
 // _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS.
-#if defined(__APPLE__) && defined(_LIBCPP_VERSION) && \
-  ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \
-   __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101400) || \
-  (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \
-   __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 120000) || \
-  (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && \
-   __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 50000) || \
-  (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && \
-   __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 120000))
+//
+// Unfortunately, Apple initially mis-stated the requirements as macOS < 10.14
+// and iOS < 12 in the libc++ headers. This was corrected by
+// https://github.com/llvm/llvm-project/commit/7fb40e1569dd66292b647f4501b85517e9247953
+// which subsequently made it into the XCode 12.5 release. We need to match the
+// old (incorrect) conditions when built with old XCode, but can use the
+// corrected earlier versions with new XCode.
+#if defined(__APPLE__) && defined(_LIBCPP_VERSION) &&               \
+    ((_LIBCPP_VERSION >= 11000 && /* XCode 12.5 or later: */        \
+      ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) &&   \
+        __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101300) ||  \
+       (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) &&  \
+        __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 110000) || \
+       (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) &&   \
+        __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 40000) ||   \
+       (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) &&      \
+        __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 110000))) ||   \
+     (_LIBCPP_VERSION < 11000 && /* Pre-XCode 12.5: */              \
+      ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) &&   \
+        __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101400) ||  \
+       (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) &&  \
+        __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 120000) || \
+       (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) &&   \
+        __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 50000) ||   \
+       (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) &&      \
+        __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 120000))))
 #define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 1
 #else
 #define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 0
diff --git a/absl/container/inlined_vector.h b/absl/container/inlined_vector.h
index df9e099..5597d43 100644
--- a/absl/container/inlined_vector.h
+++ b/absl/container/inlined_vector.h
@@ -36,7 +36,6 @@
 #define ABSL_CONTAINER_INLINED_VECTOR_H_
 
 #include <algorithm>
-#include <cassert>
 #include <cstddef>
 #include <cstdlib>
 #include <cstring>
@@ -233,8 +232,8 @@
   // specified allocator is also `noexcept`.
   InlinedVector(
       InlinedVector&& other,
-      const allocator_type& allocator)
-      noexcept(absl::allocator_is_nothrow<allocator_type>::value)
+      const allocator_type&
+          allocator) noexcept(absl::allocator_is_nothrow<allocator_type>::value)
       : storage_(allocator) {
     if (IsMemcpyOk<A>::value) {
       storage_.MemcpyFrom(other.storage_);
@@ -486,8 +485,8 @@
   InlinedVector& operator=(InlinedVector&& other) {
     if (ABSL_PREDICT_TRUE(this != std::addressof(other))) {
       if (IsMemcpyOk<A>::value || other.storage_.GetIsAllocated()) {
-        inlined_vector_internal::DestroyElements<A>(storage_.GetAllocator(),
-                                                    data(), size());
+        inlined_vector_internal::DestroyAdapter<A>::DestroyElements(
+            storage_.GetAllocator(), data(), size());
         storage_.DeallocateIfAllocated();
         storage_.MemcpyFrom(other.storage_);
 
@@ -721,8 +720,8 @@
   // Destroys all elements in the inlined vector, setting the size to `0` and
   // deallocating any held memory.
   void clear() noexcept {
-    inlined_vector_internal::DestroyElements<A>(storage_.GetAllocator(), data(),
-                                                size());
+    inlined_vector_internal::DestroyAdapter<A>::DestroyElements(
+        storage_.GetAllocator(), data(), size());
     storage_.DeallocateIfAllocated();
 
     storage_.SetInlinedSize(0);
diff --git a/absl/container/internal/inlined_vector.h b/absl/container/internal/inlined_vector.h
index 1d7d6cd..98c26af 100644
--- a/absl/container/internal/inlined_vector.h
+++ b/absl/container/internal/inlined_vector.h
@@ -94,16 +94,30 @@
 template <typename T>
 using NoTypeDeduction = typename TypeIdentity<T>::type;
 
+template <typename A, bool IsTriviallyDestructible =
+                          absl::is_trivially_destructible<ValueType<A>>::value>
+struct DestroyAdapter;
+
 template <typename A>
-void DestroyElements(NoTypeDeduction<A>& allocator, Pointer<A> destroy_first,
-                     SizeType<A> destroy_size) {
-  if (destroy_first != nullptr) {
+struct DestroyAdapter<A, /* IsTriviallyDestructible */ false> {
+  static void DestroyElements(A& allocator, Pointer<A> destroy_first,
+                              SizeType<A> destroy_size) {
     for (SizeType<A> i = destroy_size; i != 0;) {
       --i;
       AllocatorTraits<A>::destroy(allocator, destroy_first + i);
     }
   }
-}
+};
+
+template <typename A>
+struct DestroyAdapter<A, /* IsTriviallyDestructible */ true> {
+  static void DestroyElements(A& allocator, Pointer<A> destroy_first,
+                              SizeType<A> destroy_size) {
+    static_cast<void>(allocator);
+    static_cast<void>(destroy_first);
+    static_cast<void>(destroy_size);
+  }
+};
 
 template <typename A>
 struct Allocation {
@@ -133,7 +147,7 @@
   for (SizeType<A> i = 0; i < construct_size; ++i) {
     ABSL_INTERNAL_TRY { values.ConstructNext(allocator, construct_first + i); }
     ABSL_INTERNAL_CATCH_ANY {
-      DestroyElements<A>(allocator, construct_first, i);
+      DestroyAdapter<A>::DestroyElements(allocator, construct_first, i);
       ABSL_INTERNAL_RETHROW;
     }
   }
@@ -253,7 +267,7 @@
 
   ~ConstructionTransaction() {
     if (DidConstruct()) {
-      DestroyElements<A>(GetAllocator(), GetData(), GetSize());
+      DestroyAdapter<A>::DestroyElements(GetAllocator(), GetData(), GetSize());
     }
   }
 
@@ -416,7 +430,7 @@
   }
 
   void SubtractSize(SizeType<A> count) {
-    assert(count <= GetSize());
+    ABSL_HARDENING_ASSERT(count <= GetSize());
 
     GetSizeAndIsAllocated() -= count << static_cast<SizeType<A>>(1);
   }
@@ -427,7 +441,8 @@
   }
 
   void MemcpyFrom(const Storage& other_storage) {
-    assert(IsMemcpyOk<A>::value || other_storage.GetIsAllocated());
+    ABSL_HARDENING_ASSERT(IsMemcpyOk<A>::value ||
+                          other_storage.GetIsAllocated());
 
     GetSizeAndIsAllocated() = other_storage.GetSizeAndIsAllocated();
     data_ = other_storage.data_;
@@ -469,14 +484,14 @@
 template <typename T, size_t N, typename A>
 void Storage<T, N, A>::DestroyContents() {
   Pointer<A> data = GetIsAllocated() ? GetAllocatedData() : GetInlinedData();
-  DestroyElements<A>(GetAllocator(), data, GetSize());
+  DestroyAdapter<A>::DestroyElements(GetAllocator(), data, GetSize());
   DeallocateIfAllocated();
 }
 
 template <typename T, size_t N, typename A>
 void Storage<T, N, A>::InitFrom(const Storage& other) {
   const SizeType<A> n = other.GetSize();
-  assert(n > 0);  // Empty sources handled handled in caller.
+  ABSL_HARDENING_ASSERT(n > 0);  // Empty sources handled handled in caller.
   ConstPointer<A> src;
   Pointer<A> dst;
   if (!other.GetIsAllocated()) {
@@ -508,8 +523,8 @@
 auto Storage<T, N, A>::Initialize(ValueAdapter values, SizeType<A> new_size)
     -> void {
   // Only callable from constructors!
-  assert(!GetIsAllocated());
-  assert(GetSize() == 0);
+  ABSL_HARDENING_ASSERT(!GetIsAllocated());
+  ABSL_HARDENING_ASSERT(GetSize() == 0);
 
   Pointer<A> construct_data;
   if (new_size > GetInlinedCapacity()) {
@@ -566,7 +581,8 @@
   ConstructElements<A>(GetAllocator(), construct_loop.data(), values,
                        construct_loop.size());
 
-  DestroyElements<A>(GetAllocator(), destroy_loop.data(), destroy_loop.size());
+  DestroyAdapter<A>::DestroyElements(GetAllocator(), destroy_loop.data(),
+                                     destroy_loop.size());
 
   if (allocation_tx.DidAllocate()) {
     DeallocateIfAllocated();
@@ -587,7 +603,7 @@
   A& alloc = GetAllocator();
   if (new_size <= size) {
     // Destroy extra old elements.
-    DestroyElements<A>(alloc, base + new_size, size - new_size);
+    DestroyAdapter<A>::DestroyElements(alloc, base + new_size, size - new_size);
   } else if (new_size <= storage_view.capacity) {
     // Construct new elements in place.
     ConstructElements<A>(alloc, base + size, values, new_size - size);
@@ -611,7 +627,7 @@
         (MoveIterator<A>(base)));
     ConstructElements<A>(alloc, new_data, move_values, size);
 
-    DestroyElements<A>(alloc, base, size);
+    DestroyAdapter<A>::DestroyElements(alloc, base, size);
     std::move(construction_tx).Commit();
     DeallocateIfAllocated();
     SetAllocation(std::move(allocation_tx).Release());
@@ -650,7 +666,8 @@
     ConstructElements<A>(GetAllocator(), new_data + insert_end_index,
                          move_values, storage_view.size - insert_index);
 
-    DestroyElements<A>(GetAllocator(), storage_view.data, storage_view.size);
+    DestroyAdapter<A>::DestroyElements(GetAllocator(), storage_view.data,
+                                       storage_view.size);
 
     std::move(construction_tx).Commit();
     std::move(move_construction_tx).Commit();
@@ -753,7 +770,8 @@
     ABSL_INTERNAL_RETHROW;
   }
   // Destroy elements in old backing store.
-  DestroyElements<A>(GetAllocator(), storage_view.data, storage_view.size);
+  DestroyAdapter<A>::DestroyElements(GetAllocator(), storage_view.data,
+                                     storage_view.size);
 
   DeallocateIfAllocated();
   SetAllocation(std::move(allocation_tx).Release());
@@ -778,9 +796,9 @@
   AssignElements<A>(storage_view.data + erase_index, move_values,
                     storage_view.size - erase_end_index);
 
-  DestroyElements<A>(GetAllocator(),
-                     storage_view.data + (storage_view.size - erase_size),
-                     erase_size);
+  DestroyAdapter<A>::DestroyElements(
+      GetAllocator(), storage_view.data + (storage_view.size - erase_size),
+      erase_size);
 
   SubtractSize(erase_size);
   return Iterator<A>(storage_view.data + erase_index);
@@ -804,7 +822,8 @@
   ConstructElements<A>(GetAllocator(), new_data, move_values,
                        storage_view.size);
 
-  DestroyElements<A>(GetAllocator(), storage_view.data, storage_view.size);
+  DestroyAdapter<A>::DestroyElements(GetAllocator(), storage_view.data,
+                                     storage_view.size);
 
   DeallocateIfAllocated();
   SetAllocation(std::move(allocation_tx).Release());
@@ -814,7 +833,7 @@
 template <typename T, size_t N, typename A>
 auto Storage<T, N, A>::ShrinkToFit() -> void {
   // May only be called on allocated instances!
-  assert(GetIsAllocated());
+  ABSL_HARDENING_ASSERT(GetIsAllocated());
 
   StorageView<A> storage_view{GetAllocatedData(), GetSize(),
                               GetAllocatedCapacity()};
@@ -847,7 +866,8 @@
     ABSL_INTERNAL_RETHROW;
   }
 
-  DestroyElements<A>(GetAllocator(), storage_view.data, storage_view.size);
+  DestroyAdapter<A>::DestroyElements(GetAllocator(), storage_view.data,
+                                     storage_view.size);
 
   MallocAdapter<A>::Deallocate(GetAllocator(), storage_view.data,
                                storage_view.capacity);
@@ -862,7 +882,7 @@
 template <typename T, size_t N, typename A>
 auto Storage<T, N, A>::Swap(Storage* other_storage_ptr) -> void {
   using std::swap;
-  assert(this != other_storage_ptr);
+  ABSL_HARDENING_ASSERT(this != other_storage_ptr);
 
   if (GetIsAllocated() && other_storage_ptr->GetIsAllocated()) {
     swap(data_.allocated, other_storage_ptr->data_.allocated);
@@ -883,9 +903,10 @@
                          move_values,
                          large_ptr->GetSize() - small_ptr->GetSize());
 
-    DestroyElements<A>(large_ptr->GetAllocator(),
-                       large_ptr->GetInlinedData() + small_ptr->GetSize(),
-                       large_ptr->GetSize() - small_ptr->GetSize());
+    DestroyAdapter<A>::DestroyElements(
+        large_ptr->GetAllocator(),
+        large_ptr->GetInlinedData() + small_ptr->GetSize(),
+        large_ptr->GetSize() - small_ptr->GetSize());
   } else {
     Storage* allocated_ptr = this;
     Storage* inlined_ptr = other_storage_ptr;
@@ -909,8 +930,9 @@
       ABSL_INTERNAL_RETHROW;
     }
 
-    DestroyElements<A>(inlined_ptr->GetAllocator(),
-                       inlined_ptr->GetInlinedData(), inlined_ptr->GetSize());
+    DestroyAdapter<A>::DestroyElements(inlined_ptr->GetAllocator(),
+                                       inlined_ptr->GetInlinedData(),
+                                       inlined_ptr->GetSize());
 
     inlined_ptr->SetAllocation(
         {allocated_storage_view.data, allocated_storage_view.capacity});
diff --git a/absl/debugging/internal/elf_mem_image.cc b/absl/debugging/internal/elf_mem_image.cc
index d6832ea..29a2818 100644
--- a/absl/debugging/internal/elf_mem_image.cc
+++ b/absl/debugging/internal/elf_mem_image.cc
@@ -222,7 +222,7 @@
       reinterpret_cast<ElfW(Dyn) *>(dynamic_program_header->p_vaddr +
                                     relocation);
   for (; dynamic_entry->d_tag != DT_NULL; ++dynamic_entry) {
-    const ElfW(Xword) value = dynamic_entry->d_un.d_val + relocation;
+    const auto value = dynamic_entry->d_un.d_val + relocation;
     switch (dynamic_entry->d_tag) {
       case DT_HASH:
         hash_ = reinterpret_cast<ElfW(Word) *>(value);
diff --git a/absl/strings/BUILD.bazel b/absl/strings/BUILD.bazel
index 090fc58..0c47ca5 100644
--- a/absl/strings/BUILD.bazel
+++ b/absl/strings/BUILD.bazel
@@ -271,7 +271,9 @@
         "internal/cord_rep_btree.cc",
         "internal/cord_rep_btree_navigator.cc",
         "internal/cord_rep_btree_reader.cc",
+        "internal/cord_rep_concat.cc",
         "internal/cord_rep_consume.cc",
+        "internal/cord_rep_crc.cc",
         "internal/cord_rep_ring.cc",
     ],
     hdrs = [
@@ -280,6 +282,7 @@
         "internal/cord_rep_btree_navigator.h",
         "internal/cord_rep_btree_reader.h",
         "internal/cord_rep_consume.h",
+        "internal/cord_rep_crc.h",
         "internal/cord_rep_flat.h",
         "internal/cord_rep_ring.h",
         "internal/cord_rep_ring_reader.h",
@@ -306,12 +309,15 @@
 )
 
 cc_test(
-    name = "cord_internal_test",
-    srcs = ["internal/cord_internal_test.cc"],
+    name = "cord_rep_concat_test",
+    size = "small",
+    srcs = ["internal/cord_rep_concat_test.cc"],
     copts = ABSL_TEST_COPTS,
     visibility = ["//visibility:private"],
     deps = [
         ":cord_internal",
+        ":cord_rep_test_util",
+        "//absl/base:config",
         "@com_google_googletest//:gtest_main",
     ],
 )
@@ -366,6 +372,20 @@
     ],
 )
 
+cc_test(
+    name = "cord_rep_crc_test",
+    size = "small",
+    srcs = ["internal/cord_rep_crc_test.cc"],
+    copts = ABSL_TEST_COPTS,
+    visibility = ["//visibility:private"],
+    deps = [
+        ":cord_internal",
+        ":cord_rep_test_util",
+        "//absl/base:config",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
 cc_library(
     name = "cordz_update_tracker",
     hdrs = ["internal/cordz_update_tracker.h"],
@@ -695,6 +715,7 @@
         "//absl/base:endian",
         "//absl/base:raw_logging_internal",
         "//absl/container:fixed_array",
+        "//absl/hash",
         "//absl/random",
         "@com_google_googletest//:gtest_main",
     ],
diff --git a/absl/strings/BUILD.gn b/absl/strings/BUILD.gn
index 02577dc..5f52e67 100644
--- a/absl/strings/BUILD.gn
+++ b/absl/strings/BUILD.gn
@@ -123,7 +123,9 @@
     "internal/cord_rep_btree.cc",
     "internal/cord_rep_btree_navigator.cc",
     "internal/cord_rep_btree_reader.cc",
+    "internal/cord_rep_concat.cc",
     "internal/cord_rep_consume.cc",
+    "internal/cord_rep_crc.cc",
     "internal/cord_rep_ring.cc",
   ]
   public = [
@@ -132,6 +134,7 @@
     "internal/cord_rep_btree_navigator.h",
     "internal/cord_rep_btree_reader.h",
     "internal/cord_rep_consume.h",
+    "internal/cord_rep_crc.h",
     "internal/cord_rep_flat.h",
     "internal/cord_rep_ring.h",
     "internal/cord_rep_ring_reader.h",
@@ -154,11 +157,13 @@
   ]
 }
 
-absl_source_set("cord_internal_test") {
+absl_source_set("cord_rep_concat_test") {
   testonly = true
-  sources = [ "internal/cord_internal_test.cc" ]
+  sources = [ "internal/cord_rep_concat_test.cc" ]
   deps = [
     ":cord_internal",
+    ":cord_rep_test_util",
+    "//third_party/abseil-cpp/absl/base:config",
     "//third_party/googletest:gmock",
     "//third_party/googletest:gtest",
   ]
@@ -194,6 +199,18 @@
   ]
 }
 
+absl_source_set("cord_rep_crc_test") {
+  testonly = true
+  sources = [ "internal/cord_rep_crc_test.cc" ]
+  deps = [
+    ":cord_internal",
+    ":cord_rep_test_util",
+    "//third_party/abseil-cpp/absl/base:config",
+    "//third_party/googletest:gmock",
+    "//third_party/googletest:gtest",
+  ]
+}
+
 absl_source_set("cordz_update_tracker") {
   public = [ "internal/cordz_update_tracker.h" ]
   visibility = [ "//third_party/abseil-cpp/*" ]
@@ -477,6 +494,7 @@
 #     "//third_party/abseil-cpp/absl/base:endian",
 #     "//third_party/abseil-cpp/absl/base:raw_logging_internal",
 #     "//third_party/abseil-cpp/absl/container:fixed_array",
+#     "//third_party/abseil-cpp/absl/hash",
 #     "//third_party/abseil-cpp/absl/random",
 #     "//third_party/googletest:gtest",
 #   ]
diff --git a/absl/strings/CMakeLists.txt b/absl/strings/CMakeLists.txt
index d6801fe..aab97ef 100644
--- a/absl/strings/CMakeLists.txt
+++ b/absl/strings/CMakeLists.txt
@@ -558,6 +558,7 @@
     "internal/cord_rep_btree.h"
     "internal/cord_rep_btree_navigator.h"
     "internal/cord_rep_btree_reader.h"
+    "internal/cord_rep_crc.h"
     "internal/cord_rep_consume.h"
     "internal/cord_rep_flat.h"
     "internal/cord_rep_ring.h"
@@ -567,6 +568,8 @@
     "internal/cord_rep_btree.cc"
     "internal/cord_rep_btree_navigator.cc"
     "internal/cord_rep_btree_reader.cc"
+    "internal/cord_rep_concat.cc"
+    "internal/cord_rep_crc.cc"
     "internal/cord_rep_consume.cc"
     "internal/cord_rep_ring.cc"
   COPTS
@@ -920,6 +923,7 @@
     absl::cordz_test_helpers
     absl::core_headers
     absl::endian
+    absl::hash
     absl::random_random
     absl::raw_logging_internal
     absl::fixed_array
@@ -946,13 +950,17 @@
 
 absl_cc_test(
   NAME
-    cord_internal_test
+    cord_rep_concat_test
   SRCS
-    "internal/cord_internal_test.cc"
+    "internal/cord_rep_concat_test.cc"
   COPTS
     ${ABSL_TEST_COPTS}
   DEPS
+    absl::base
+    absl::config
     absl::cord_internal
+    absl::cord_rep_test_util
+    absl::core_headers
     GTest::gmock_main
 )
 
@@ -1013,6 +1021,20 @@
 
 absl_cc_test(
   NAME
+    cord_rep_crc_test
+  SRCS
+    "internal/cord_rep_crc_test.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
+  DEPS
+    absl::config
+    absl::cord_internal
+    absl::cord_rep_test_util
+    GTest::gmock_main
+)
+
+absl_cc_test(
+  NAME
     cord_ring_test
   SRCS
     "cord_ring_test.cc"
diff --git a/absl/strings/cord.cc b/absl/strings/cord.cc
index 854047c..0015bb9 100644
--- a/absl/strings/cord.cc
+++ b/absl/strings/cord.cc
@@ -37,6 +37,7 @@
 #include "absl/strings/escaping.h"
 #include "absl/strings/internal/cord_internal.h"
 #include "absl/strings/internal/cord_rep_btree.h"
+#include "absl/strings/internal/cord_rep_crc.h"
 #include "absl/strings/internal/cord_rep_flat.h"
 #include "absl/strings/internal/cordz_statistics.h"
 #include "absl/strings/internal/cordz_update_scope.h"
@@ -53,6 +54,7 @@
 using ::absl::cord_internal::CordRep;
 using ::absl::cord_internal::CordRepBtree;
 using ::absl::cord_internal::CordRepConcat;
+using ::absl::cord_internal::CordRepCrc;
 using ::absl::cord_internal::CordRepExternal;
 using ::absl::cord_internal::CordRepFlat;
 using ::absl::cord_internal::CordRepSubstring;
@@ -265,6 +267,7 @@
     return nullptr;
   } else {
     CordRepSubstring* rep = new CordRepSubstring();
+    assert(child->IsExternal() || child->IsFlat());
     assert((offset + length) <= child->length);
     rep->length = length;
     rep->tag = cord_internal::SUBSTRING;
@@ -341,7 +344,9 @@
 // Returns `rep` converted into a CordRepBtree.
 // Directly returns `rep` if `rep` is already a CordRepBtree.
 static CordRepBtree* ForceBtree(CordRep* rep) {
-  return rep->IsBtree() ? rep->btree() : CordRepBtree::Create(rep);
+  return rep->IsBtree()
+             ? rep->btree()
+             : CordRepBtree::Create(cord_internal::RemoveCrcNode(rep));
 }
 
 void Cord::InlineRep::AppendTreeToInlined(CordRep* tree,
@@ -364,13 +369,14 @@
   if (btree_enabled()) {
     tree = CordRepBtree::Append(ForceBtree(data_.as_tree()), tree);
   } else {
-    tree = Concat(data_.as_tree(), tree);
+    tree = Concat(cord_internal::RemoveCrcNode(data_.as_tree()), tree);
   }
   SetTree(tree, scope);
 }
 
 void Cord::InlineRep::AppendTree(CordRep* tree, MethodIdentifier method) {
   if (tree == nullptr) return;
+  assert(!tree->IsCrc());
   if (data_.is_tree()) {
     AppendTreeToTree(tree, method);
   } else {
@@ -399,13 +405,14 @@
   if (btree_enabled()) {
     tree = CordRepBtree::Prepend(ForceBtree(data_.as_tree()), tree);
   } else {
-    tree = Concat(tree, data_.as_tree());
+    tree = Concat(tree, cord_internal::RemoveCrcNode(data_.as_tree()));
   }
   SetTree(tree, scope);
 }
 
 void Cord::InlineRep::PrependTree(CordRep* tree, MethodIdentifier method) {
   assert(tree != nullptr);
+  assert(!tree->IsCrc());
   if (data_.is_tree()) {
     PrependTreeToTree(tree, method);
   } else {
@@ -419,7 +426,7 @@
 // written to region and the actual size increase will be written to size.
 static inline bool PrepareAppendRegion(CordRep* root, char** region,
                                        size_t* size, size_t max_length) {
-  if (root->IsBtree() && root->refcount.IsMutable()) {
+  if (root->IsBtree() && root->refcount.IsOne()) {
     Span<char> span = root->btree()->GetAppendBuffer(max_length);
     if (!span.empty()) {
       *region = span.data();
@@ -430,11 +437,11 @@
 
   // Search down the right-hand path for a non-full FLAT node.
   CordRep* dst = root;
-  while (dst->IsConcat() && dst->refcount.IsMutable()) {
+  while (dst->IsConcat() && dst->refcount.IsOne()) {
     dst = dst->concat()->right;
   }
 
-  if (!dst->IsFlat() || !dst->refcount.IsMutable()) {
+  if (!dst->IsFlat() || !dst->refcount.IsOne()) {
     *region = nullptr;
     *size = 0;
     return false;
@@ -479,8 +486,9 @@
   }
 
   size_t extra = has_length ? length : (std::max)(sz, kMinFlatLength);
-  CordRep* rep = root ? root : MakeFlatWithExtraCapacity(extra);
   CordzUpdateScope scope(root ? data_.cordz_info() : nullptr, method);
+  CordRep* rep = root ? cord_internal::RemoveCrcNode(root)
+                      : MakeFlatWithExtraCapacity(extra);
   if (PrepareAppendRegion(rep, region, size, length)) {
     CommitTree(root, rep, scope, method);
     return;
@@ -649,7 +657,7 @@
   if (tree != nullptr) {
     CordzUpdateScope scope(contents_.cordz_info(), method);
     if (tree->IsFlat() && tree->flat()->Capacity() >= length &&
-        tree->refcount.IsMutable()) {
+        tree->refcount.IsOne()) {
       // Copy in place if the existing FLAT node is reusable.
       memmove(tree->flat()->Data(), data, length);
       tree->length = length;
@@ -675,6 +683,7 @@
   const CordRep* const root = rep;
   CordzUpdateScope scope(root ? cordz_info() : nullptr, method);
   if (root != nullptr) {
+    rep = cord_internal::RemoveCrcNode(rep);
     char* region;
     if (PrepareAppendRegion(rep, &region, &appended, src.size())) {
       memcpy(region, src.data(), appended);
@@ -746,7 +755,8 @@
     // Since destination is empty, we can avoid allocating a node,
     if (src.contents_.is_tree()) {
       // by taking the tree directly
-      CordRep* rep = std::forward<C>(src).TakeRep();
+      CordRep* rep =
+          cord_internal::RemoveCrcNode(std::forward<C>(src).TakeRep());
       contents_.EmplaceTree(rep, method);
     } else {
       // or copying over inline data
@@ -782,7 +792,7 @@
   }
 
   // Guaranteed to be a tree (kMaxBytesToCopy > kInlinedSize)
-  CordRep* rep = std::forward<C>(src).TakeRep();
+  CordRep* rep = cord_internal::RemoveCrcNode(std::forward<C>(src).TakeRep());
   contents_.AppendTree(rep, CordzUpdateTracker::kAppendCord);
 }
 
@@ -810,7 +820,8 @@
   CordRep* src_tree = src.contents_.tree();
   if (src_tree != nullptr) {
     CordRep::Ref(src_tree);
-    contents_.PrependTree(src_tree, CordzUpdateTracker::kPrependCord);
+    contents_.PrependTree(cord_internal::RemoveCrcNode(src_tree),
+                          CordzUpdateTracker::kPrependCord);
     return;
   }
 
@@ -854,6 +865,7 @@
   if (n == 0) return CordRep::Ref(node);
   absl::InlinedVector<CordRep*, kInlinedVectorSize> rhs_stack;
 
+  assert(!node->IsCrc());
   while (node->IsConcat()) {
     assert(n <= node->length);
     if (n < node->concat()->left->length) {
@@ -894,7 +906,8 @@
   if (n >= node->length) return nullptr;
   if (n == 0) return CordRep::Ref(node);
   absl::InlinedVector<CordRep*, kInlinedVectorSize> lhs_stack;
-  bool inplace_ok = node->refcount.IsMutable();
+  bool inplace_ok = node->refcount.IsOne();
+  assert(!node->IsCrc());
 
   while (node->IsConcat()) {
     assert(n <= node->length);
@@ -907,7 +920,7 @@
       n -= node->concat()->right->length;
       node = node->concat()->left;
     }
-    inplace_ok = inplace_ok && node->refcount.IsMutable();
+    inplace_ok = inplace_ok && node->refcount.IsOne();
   }
   assert(n <= node->length);
 
@@ -944,6 +957,7 @@
   } else {
     auto constexpr method = CordzUpdateTracker::kRemovePrefix;
     CordzUpdateScope scope(contents_.cordz_info(), method);
+    tree = cord_internal::RemoveCrcNode(tree);
     if (tree->IsBtree()) {
       CordRep* old = tree;
       tree = tree->btree()->SubTree(n, tree->length - n);
@@ -967,6 +981,7 @@
   } else {
     auto constexpr method = CordzUpdateTracker::kRemoveSuffix;
     CordzUpdateScope scope(contents_.cordz_info(), method);
+    tree = cord_internal::RemoveCrcNode(tree);
     if (tree->IsBtree()) {
       tree = CordRepBtree::RemoveSuffix(tree->btree(), n);
     } else {
@@ -990,6 +1005,7 @@
 static CordRep* NewSubRange(CordRep* node, size_t pos, size_t n) {
   absl::InlinedVector<CordRep*, kInlinedVectorSize> results;
   absl::InlinedVector<SubRange, kInlinedVectorSize> todo;
+  assert(!node->IsCrc());
   todo.push_back(SubRange(node, pos, n));
   do {
     const SubRange& sr = todo.back();
@@ -1060,6 +1076,7 @@
     return sub_cord;
   }
 
+  tree = cord_internal::SkipCrcNode(tree);
   if (tree->IsBtree()) {
     tree = tree->btree()->SubTree(pos, new_size);
   } else {
@@ -1080,6 +1097,7 @@
 
   void Build(CordRep* cord_root) {
     std::vector<CordRep*> pending = {cord_root};
+    assert(cord_root->IsConcat());
 
     while (!pending.empty()) {
       CordRep* node = pending.back();
@@ -1256,7 +1274,7 @@
     return absl::string_view(data_.as_chars(), data_.inline_size());
   }
 
-  CordRep* node = tree();
+  CordRep* node = cord_internal::SkipCrcNode(tree());
   if (node->IsFlat()) {
     return absl::string_view(node->flat()->Data(), node->length);
   }
@@ -1298,6 +1316,28 @@
   return absl::string_view(node->external()->base + offset, length);
 }
 
+void Cord::SetExpectedChecksum(uint32_t crc) {
+  auto constexpr method = CordzUpdateTracker::kSetExpectedChecksum;
+  if (empty()) return;
+
+  if (!contents_.is_tree()) {
+    CordRep* rep = contents_.MakeFlatWithExtraCapacity(0);
+    rep = CordRepCrc::New(rep, crc);
+    contents_.EmplaceTree(rep, method);
+  } else {
+    const CordzUpdateScope scope(contents_.data_.cordz_info(), method);
+    CordRep* rep = CordRepCrc::New(contents_.data_.as_tree(), crc);
+    contents_.SetTree(rep, scope);
+  }
+}
+
+absl::optional<uint32_t> Cord::ExpectedChecksum() const {
+  if (!contents_.is_tree() || !contents_.tree()->IsCrc()) {
+    return absl::nullopt;
+  }
+  return contents_.tree()->crc()->crc;
+}
+
 inline int Cord::CompareSlowPath(absl::string_view rhs, size_t compared_size,
                                  size_t size_to_compare) const {
   auto advance = [](Cord::ChunkIterator* it, absl::string_view* chunk) {
@@ -1718,6 +1758,7 @@
   if (rep == nullptr) {
     return contents_.data()[i];
   }
+  rep = cord_internal::SkipCrcNode(rep);
   while (true) {
     assert(rep != nullptr);
     assert(offset < rep->length);
@@ -1778,6 +1819,7 @@
 
 /* static */ bool Cord::GetFlatAux(CordRep* rep, absl::string_view* fragment) {
   assert(rep != nullptr);
+  rep = cord_internal::SkipCrcNode(rep);
   if (rep->IsFlat()) {
     *fragment = absl::string_view(rep->flat()->Data(), rep->length);
     return true;
@@ -1807,6 +1849,9 @@
 /* static */ void Cord::ForEachChunkAux(
     absl::cord_internal::CordRep* rep,
     absl::FunctionRef<void(absl::string_view)> callback) {
+  assert(rep != nullptr);
+  rep = cord_internal::SkipCrcNode(rep);
+
   if (rep->IsBtree()) {
     ChunkIterator it(rep), end;
     while (it != end) {
@@ -1816,12 +1861,11 @@
     return;
   }
 
-  assert(rep != nullptr);
   int stack_pos = 0;
   constexpr int stack_max = 128;
   // Stack of right branches for tree traversal
   absl::cord_internal::CordRep* stack[stack_max];
-  absl::cord_internal::CordRep* current_node = rep;
+  absl::cord_internal::CordRep* current_node = cord_internal::SkipCrcNode(rep);
   while (true) {
     if (current_node->IsConcat()) {
       if (stack_pos == stack_max) {
@@ -1870,7 +1914,11 @@
     *os << "]";
     *os << " " << (IsRootBalanced(rep) ? 'b' : 'u');
     *os << " " << std::setw(indent) << "";
-    if (rep->IsConcat()) {
+    if (rep->IsCrc()) {
+      *os << "CRC crc=" << rep->crc()->crc << "\n";
+      indent += kIndentStep;
+      rep = rep->crc()->child;
+    } else if (rep->IsConcat()) {
       *os << "CONCAT depth=" << Depth(rep) << "\n";
       indent += kIndentStep;
       indents.push_back(indent);
@@ -1922,6 +1970,7 @@
     ABSL_INTERNAL_CHECK(node != nullptr, ReportError(root, node));
     if (node != root) {
       ABSL_INTERNAL_CHECK(node->length != 0, ReportError(root, node));
+      ABSL_INTERNAL_CHECK(!node->IsCrc(), ReportError(root, node));
     }
 
     if (node->IsConcat()) {
@@ -1949,6 +1998,12 @@
       ABSL_INTERNAL_CHECK(node->substring()->start + node->length <=
                               node->substring()->child->length,
                           ReportError(root, node));
+    } else if (node->IsCrc()) {
+      ABSL_INTERNAL_CHECK(node->crc()->child != nullptr,
+                          ReportError(root, node));
+      ABSL_INTERNAL_CHECK(node->crc()->length == node->crc()->child->length,
+                          ReportError(root, node));
+      worklist.push_back(node->crc()->child);
     }
   } while (!worklist.empty());
   return true;
@@ -1958,6 +2013,11 @@
 /* static */ size_t Cord::MemoryUsageAux(const CordRep* rep) {
   size_t total_mem_usage = 0;
 
+  if (rep->IsCrc()) {
+    total_mem_usage += sizeof(CordRepCrc);
+    rep = rep->crc()->child;
+  }
+
   // Allow a quick exit for the common case that the root is a leaf.
   if (RepMemoryUsageLeaf(rep, &total_mem_usage)) {
     return total_mem_usage;
diff --git a/absl/strings/cord.h b/absl/strings/cord.h
index f0a1991..3f0633b 100644
--- a/absl/strings/cord.h
+++ b/absl/strings/cord.h
@@ -81,6 +81,7 @@
 #include "absl/strings/internal/cord_internal.h"
 #include "absl/strings/internal/cord_rep_btree.h"
 #include "absl/strings/internal/cord_rep_btree_reader.h"
+#include "absl/strings/internal/cord_rep_crc.h"
 #include "absl/strings/internal/cord_rep_ring.h"
 #include "absl/strings/internal/cordz_functions.h"
 #include "absl/strings/internal/cordz_info.h"
@@ -671,6 +672,29 @@
     cord->Append(part);
   }
 
+  // Cord::SetExpectedChecksum()
+  //
+  // Stores a checksum value with this non-empty cord instance, for later
+  // retrieval.
+  //
+  // The expected checksum is a number stored out-of-band, alongside the data.
+  // It is preserved across copies and assignments, but any mutations to a cord
+  // will cause it to lose its expected checksum.
+  //
+  // The expected checksum is not part of a Cord's value, and does not affect
+  // operations such as equality or hashing.
+  //
+  // This field is intended to store a CRC32C checksum for later validation, to
+  // help support end-to-end checksum workflows.  However, the Cord API itself
+  // does no CRC validation, and assigns no meaning to this number.
+  //
+  // This call has no effect if this cord is empty.
+  void SetExpectedChecksum(uint32_t crc);
+
+  // Returns this cord's expected checksum, if it has one.  Otherwise, returns
+  // nullopt.
+  absl::optional<uint32_t> ExpectedChecksum() const;
+
   template <typename H>
   friend H AbslHashValue(H hash_state, const absl::Cord& c) {
     absl::optional<absl::string_view> maybe_flat = c.TryFlat();
@@ -1274,6 +1298,7 @@
 }
 
 inline void Cord::ChunkIterator::InitTree(cord_internal::CordRep* tree) {
+  tree = cord_internal::SkipCrcNode(tree);
   if (tree->tag == cord_internal::BTREE) {
     current_chunk_ = btree_reader_.Init(tree->btree());
     return;
diff --git a/absl/strings/cord_test.cc b/absl/strings/cord_test.cc
index cced9bb..188fbc2 100644
--- a/absl/strings/cord_test.cc
+++ b/absl/strings/cord_test.cc
@@ -34,9 +34,11 @@
 #include "absl/base/internal/raw_logging.h"
 #include "absl/base/macros.h"
 #include "absl/container/fixed_array.h"
+#include "absl/hash/hash.h"
 #include "absl/random/random.h"
 #include "absl/strings/cord_test_helpers.h"
 #include "absl/strings/cordz_test_helpers.h"
+#include "absl/strings/match.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/str_format.h"
 #include "absl/strings/string_view.h"
@@ -192,10 +194,13 @@
 
   static Cord MakeSubstring(Cord src, size_t offset, size_t length) {
     ABSL_RAW_CHECK(src.contents_.is_tree(), "Can not be inlined");
+    ABSL_RAW_CHECK(src.ExpectedChecksum() == absl::nullopt,
+                   "Can not be hardened");
     Cord cord;
     auto* rep = new cord_internal::CordRepSubstring;
     rep->tag = cord_internal::SUBSTRING;
-    rep->child = cord_internal::CordRep::Ref(src.contents_.tree());
+    rep->child = cord_internal::CordRep::Ref(
+        cord_internal::SkipCrcNode(src.contents_.tree()));
     rep->start = offset;
     rep->length = length;
     cord.contents_.EmplaceTree(rep,
@@ -207,8 +212,9 @@
 ABSL_NAMESPACE_END
 }  // namespace absl
 
-// The CordTest fixture runs all tests with and without Cord Btree enabled.
-class CordTest : public testing::TestWithParam<bool> {
+// The CordTest fixture runs all tests with and without Cord Btree enabled,
+// and with our without expected CRCs being set on the subject Cords.
+class CordTest : public testing::TestWithParam<int> {
  public:
   CordTest() : was_btree_(absl::cord_internal::cord_btree_enabled.load()) {
     absl::cord_internal::cord_btree_enabled.store(UseBtree());
@@ -218,18 +224,40 @@
   }
 
   // Returns true if test is running with btree enabled.
-  bool UseBtree() const { return GetParam(); }
+  bool UseBtree() const { return GetParam() == 1 || GetParam() == 3; }
+  bool UseCrc() const { return GetParam() == 2 || GetParam() == 3; }
+  void MaybeHarden(absl::Cord& c) {
+    if (UseCrc()) {
+      c.SetExpectedChecksum(1);
+    }
+  }
+  absl::Cord MaybeHardened(absl::Cord c) {
+    MaybeHarden(c);
+    return c;
+  }
 
   // Returns human readable string representation of the test parameter.
-  static std::string ToString(testing::TestParamInfo<bool> param) {
-    return param.param ? "Btree" : "Concat";
+  static std::string ToString(testing::TestParamInfo<int> param) {
+    switch (param.param) {
+      case 0:
+        return "Concat";
+      case 1:
+        return "Btree";
+      case 2:
+        return "ConcatHardened";
+      case 3:
+        return "BtreeHardened";
+      default:
+        assert(false);
+        return "???";
+    }
   }
 
  private:
   const bool was_btree_;
 };
 
-INSTANTIATE_TEST_SUITE_P(WithParam, CordTest, testing::Bool(),
+INSTANTIATE_TEST_SUITE_P(WithParam, CordTest, testing::Values(0, 1, 2, 3),
                          CordTest::ToString);
 
 TEST_P(CordTest, AllFlatSizes) {
@@ -243,6 +271,7 @@
     }
 
     absl::Cord dst(src);
+    MaybeHarden(dst);
     EXPECT_EQ(std::string(dst), src) << s;
   }
 }
@@ -274,6 +303,7 @@
     c.Append(from);
     c.Append(from);
     c.Append(from);
+    MaybeHarden(c);
   }
 
   for (int i = 0; i < 1024; ++i) {
@@ -302,6 +332,8 @@
 TEST_P(CordTest, Assignment) {
   absl::Cord x(absl::string_view("hi there"));
   absl::Cord y(x);
+  MaybeHarden(y);
+  ASSERT_EQ(x.ExpectedChecksum(), absl::nullopt);
   ASSERT_EQ(std::string(x), "hi there");
   ASSERT_EQ(std::string(y), "hi there");
   ASSERT_TRUE(x == y);
@@ -355,6 +387,7 @@
 
 TEST_P(CordTest, StartsEndsWith) {
   absl::Cord x(absl::string_view("abcde"));
+  MaybeHarden(x);
   absl::Cord empty("");
 
   ASSERT_TRUE(x.StartsWith(absl::Cord("abcde")));
@@ -392,6 +425,7 @@
 
   absl::Cord a;
   AppendWithFragments(s, &rng, &a);
+  MaybeHarden(a);
   ASSERT_EQ(s, std::string(a));
 
   // Check subcords of a, from a variety of interesting points.
@@ -413,6 +447,9 @@
       ASSERT_EQ(absl::string_view(s).substr(pos, end_pos - pos),
                 std::string(sa))
           << a;
+      if (pos != 0 || end_pos != a.size()) {
+        ASSERT_EQ(sa.ExpectedChecksum(), absl::nullopt);
+      }
     }
   }
 
@@ -452,10 +489,19 @@
   absl::string_view b("Mandark");
   absl::Cord x(a);
   absl::Cord y(b);
+  MaybeHarden(x);
   swap(x, y);
+  if (UseCrc()) {
+    ASSERT_EQ(x.ExpectedChecksum(), absl::nullopt);
+    ASSERT_EQ(y.ExpectedChecksum(), 1);
+  }
   ASSERT_EQ(x, absl::Cord(b));
   ASSERT_EQ(y, absl::Cord(a));
   x.swap(y);
+  if (UseCrc()) {
+    ASSERT_EQ(x.ExpectedChecksum(), 1);
+    ASSERT_EQ(y.ExpectedChecksum(), absl::nullopt);
+  }
   ASSERT_EQ(x, absl::Cord(a));
   ASSERT_EQ(y, absl::Cord(b));
 }
@@ -480,11 +526,11 @@
 }
 
 TEST_P(CordTest, CopyToString) {
-  VerifyCopyToString(absl::Cord());
-  VerifyCopyToString(absl::Cord("small cord"));
-  VerifyCopyToString(
+  VerifyCopyToString(absl::Cord());  // empty cords cannot carry CRCs
+  VerifyCopyToString(MaybeHardened(absl::Cord("small cord")));
+  VerifyCopyToString(MaybeHardened(
       absl::MakeFragmentedCord({"fragmented ", "cord ", "to ", "test ",
-                                "copying ", "to ", "a ", "string."}));
+                                "copying ", "to ", "a ", "string."})));
 }
 
 TEST_P(CordTest, TryFlatEmpty) {
@@ -494,40 +540,47 @@
 
 TEST_P(CordTest, TryFlatFlat) {
   absl::Cord c("hello");
+  MaybeHarden(c);
   EXPECT_EQ(c.TryFlat(), "hello");
 }
 
 TEST_P(CordTest, TryFlatSubstrInlined) {
   absl::Cord c("hello");
   c.RemovePrefix(1);
+  MaybeHarden(c);
   EXPECT_EQ(c.TryFlat(), "ello");
 }
 
 TEST_P(CordTest, TryFlatSubstrFlat) {
   absl::Cord c("longer than 15 bytes");
   absl::Cord sub = absl::CordTestPeer::MakeSubstring(c, 1, c.size() - 1);
+  MaybeHarden(sub);
   EXPECT_EQ(sub.TryFlat(), "onger than 15 bytes");
 }
 
 TEST_P(CordTest, TryFlatConcat) {
   absl::Cord c = absl::MakeFragmentedCord({"hel", "lo"});
+  MaybeHarden(c);
   EXPECT_EQ(c.TryFlat(), absl::nullopt);
 }
 
 TEST_P(CordTest, TryFlatExternal) {
   absl::Cord c = absl::MakeCordFromExternal("hell", [](absl::string_view) {});
+  MaybeHarden(c);
   EXPECT_EQ(c.TryFlat(), "hell");
 }
 
 TEST_P(CordTest, TryFlatSubstrExternal) {
   absl::Cord c = absl::MakeCordFromExternal("hell", [](absl::string_view) {});
   absl::Cord sub = absl::CordTestPeer::MakeSubstring(c, 1, c.size() - 1);
+  MaybeHarden(sub);
   EXPECT_EQ(sub.TryFlat(), "ell");
 }
 
 TEST_P(CordTest, TryFlatSubstrConcat) {
   absl::Cord c = absl::MakeFragmentedCord({"hello", " world"});
   absl::Cord sub = absl::CordTestPeer::MakeSubstring(c, 1, c.size() - 1);
+  MaybeHarden(sub);
   EXPECT_EQ(sub.TryFlat(), absl::nullopt);
   c.RemovePrefix(1);
   EXPECT_EQ(c.TryFlat(), absl::nullopt);
@@ -547,6 +600,7 @@
                                    "returned by the ",
                                    "iterator"};
   absl::Cord c = absl::MakeFragmentedCord(fragments);
+  MaybeHarden(c);
   int fragment = 0;
   int offset = 0;
   absl::Cord::CharIterator itc = c.char_begin();
@@ -591,13 +645,15 @@
 
 TEST_P(CordTest, Flatten) {
   VerifyFlatten(absl::Cord());
-  VerifyFlatten(absl::Cord("small cord"));
-  VerifyFlatten(absl::Cord("larger than small buffer optimization"));
-  VerifyFlatten(absl::MakeFragmentedCord({"small ", "fragmented ", "cord"}));
+  VerifyFlatten(MaybeHardened(absl::Cord("small cord")));
+  VerifyFlatten(
+      MaybeHardened(absl::Cord("larger than small buffer optimization")));
+  VerifyFlatten(MaybeHardened(
+      absl::MakeFragmentedCord({"small ", "fragmented ", "cord"})));
 
   // Test with a cord that is longer than the largest flat buffer
   RandomEngine rng(GTEST_FLAG_GET(random_seed));
-  VerifyFlatten(absl::Cord(RandomLowercaseString(&rng, 8192)));
+  VerifyFlatten(MaybeHardened(absl::Cord(RandomLowercaseString(&rng, 8192))));
 }
 
 // Test data
@@ -651,22 +707,26 @@
     {  // Construct from Cord
       absl::Cord tmp(a);
       absl::Cord x(tmp);
+      MaybeHarden(x);
       EXPECT_EQ(a, std::string(x)) << "'" << a << "'";
     }
 
     {  // Construct from absl::string_view
       absl::Cord x(a);
+      MaybeHarden(x);
       EXPECT_EQ(a, std::string(x)) << "'" << a << "'";
     }
 
     {  // Append cord to self
       absl::Cord self(a);
+      MaybeHarden(self);
       self.Append(self);
       EXPECT_EQ(a + a, std::string(self)) << "'" << a << "' + '" << a << "'";
     }
 
     {  // Prepend cord to self
       absl::Cord self(a);
+      MaybeHarden(self);
       self.Prepend(self);
       EXPECT_EQ(a + a, std::string(self)) << "'" << a << "' + '" << a << "'";
     }
@@ -678,12 +738,14 @@
       {  // CopyFrom Cord
         absl::Cord x(a);
         absl::Cord y(b);
+        MaybeHarden(x);
         x = y;
         EXPECT_EQ(b, std::string(x)) << "'" << a << "' + '" << b << "'";
       }
 
       {  // CopyFrom absl::string_view
         absl::Cord x(a);
+        MaybeHarden(x);
         x = b;
         EXPECT_EQ(b, std::string(x)) << "'" << a << "' + '" << b << "'";
       }
@@ -691,12 +753,14 @@
       {  // Cord::Append(Cord)
         absl::Cord x(a);
         absl::Cord y(b);
+        MaybeHarden(x);
         x.Append(y);
         EXPECT_EQ(a + b, std::string(x)) << "'" << a << "' + '" << b << "'";
       }
 
       {  // Cord::Append(absl::string_view)
         absl::Cord x(a);
+        MaybeHarden(x);
         x.Append(b);
         EXPECT_EQ(a + b, std::string(x)) << "'" << a << "' + '" << b << "'";
       }
@@ -704,12 +768,14 @@
       {  // Cord::Prepend(Cord)
         absl::Cord x(a);
         absl::Cord y(b);
+        MaybeHarden(x);
         x.Prepend(y);
         EXPECT_EQ(b + a, std::string(x)) << "'" << b << "' + '" << a << "'";
       }
 
       {  // Cord::Prepend(absl::string_view)
         absl::Cord x(a);
+        MaybeHarden(x);
         x.Prepend(b);
         EXPECT_EQ(b + a, std::string(x)) << "'" << b << "' + '" << a << "'";
       }
@@ -722,13 +788,16 @@
 TEST_P(CordTest, RemoveSuffixWithExternalOrSubstring) {
   absl::Cord cord = absl::MakeCordFromExternal(
       "foo bar baz", [](absl::string_view s) { DoNothing(s, nullptr); });
-
   EXPECT_EQ("foo bar baz", std::string(cord));
 
+  MaybeHarden(cord);
+
   // This RemoveSuffix() will wrap the EXTERNAL node in a SUBSTRING node.
   cord.RemoveSuffix(4);
   EXPECT_EQ("foo bar", std::string(cord));
 
+  MaybeHarden(cord);
+
   // This RemoveSuffix() will adjust the SUBSTRING node in-place.
   cord.RemoveSuffix(4);
   EXPECT_EQ("foo", std::string(cord));
@@ -738,6 +807,7 @@
   absl::Cord c;
   c.Append(absl::Cord(std::string(100, 'x')));
   absl::Cord other_ref = c;  // Prevent inplace appends
+  MaybeHarden(c);
   c.Append(absl::Cord(std::string(200, 'y')));
   c.RemoveSuffix(200);
   EXPECT_EQ(std::string(100, 'x'), std::string(c));
@@ -763,6 +833,7 @@
 // Establish that ZedBlock does what we think it does.
 TEST_P(CordTest, CordSpliceTestZedBlock) {
   absl::Cord blob = CordWithZedBlock(10);
+  MaybeHarden(blob);
   EXPECT_EQ(10, blob.size());
   std::string s;
   absl::CopyCordToString(blob, &s);
@@ -771,6 +842,7 @@
 
 TEST_P(CordTest, CordSpliceTestZedBlock0) {
   absl::Cord blob = CordWithZedBlock(0);
+  MaybeHarden(blob);
   EXPECT_EQ(0, blob.size());
   std::string s;
   absl::CopyCordToString(blob, &s);
@@ -779,6 +851,7 @@
 
 TEST_P(CordTest, CordSpliceTestZedBlockSuffix1) {
   absl::Cord blob = CordWithZedBlock(10);
+  MaybeHarden(blob);
   EXPECT_EQ(10, blob.size());
   absl::Cord suffix(blob);
   suffix.RemovePrefix(9);
@@ -791,6 +864,7 @@
 // Remove all of a prefix block
 TEST_P(CordTest, CordSpliceTestZedBlockSuffix0) {
   absl::Cord blob = CordWithZedBlock(10);
+  MaybeHarden(blob);
   EXPECT_EQ(10, blob.size());
   absl::Cord suffix(blob);
   suffix.RemovePrefix(10);
@@ -823,6 +897,7 @@
 // Taking an empty suffix of a block breaks appending.
 TEST_P(CordTest, CordSpliceTestRemoveEntireBlock1) {
   absl::Cord zero = CordWithZedBlock(10);
+  MaybeHarden(zero);
   absl::Cord suffix(zero);
   suffix.RemovePrefix(10);
   absl::Cord result;
@@ -831,6 +906,7 @@
 
 TEST_P(CordTest, CordSpliceTestRemoveEntireBlock2) {
   absl::Cord zero = CordWithZedBlock(10);
+  MaybeHarden(zero);
   absl::Cord prefix(zero);
   prefix.RemoveSuffix(10);
   absl::Cord suffix(zero);
@@ -842,13 +918,19 @@
 TEST_P(CordTest, CordSpliceTestRemoveEntireBlock3) {
   absl::Cord blob = CordWithZedBlock(10);
   absl::Cord block = BigCord(10, 'b');
+  MaybeHarden(blob);
+  MaybeHarden(block);
   blob = SpliceCord(blob, 0, block);
 }
 
 struct CordCompareTestCase {
   template <typename LHS, typename RHS>
-  CordCompareTestCase(const LHS& lhs, const RHS& rhs)
-      : lhs_cord(lhs), rhs_cord(rhs) {}
+  CordCompareTestCase(const LHS& lhs, const RHS& rhs, bool use_crc)
+      : lhs_cord(lhs), rhs_cord(rhs) {
+    if (use_crc) {
+      lhs_cord.SetExpectedChecksum(1);
+    }
+  }
 
   absl::Cord lhs_cord;
   absl::Cord rhs_cord;
@@ -885,47 +967,54 @@
   concat2.Append("cccccccccccDDDDDDDDDDDDDD");
   concat2.Append("DD");
 
+  const bool use_crc = UseCrc();
+
   std::vector<CordCompareTestCase> test_cases = {{
       // Inline cords
-      {"abcdef", "abcdef"},
-      {"abcdef", "abcdee"},
-      {"abcdef", "abcdeg"},
-      {"bbcdef", "abcdef"},
-      {"bbcdef", "abcdeg"},
-      {"abcdefa", "abcdef"},
-      {"abcdef", "abcdefa"},
+      {"abcdef", "abcdef", use_crc},
+      {"abcdef", "abcdee", use_crc},
+      {"abcdef", "abcdeg", use_crc},
+      {"bbcdef", "abcdef", use_crc},
+      {"bbcdef", "abcdeg", use_crc},
+      {"abcdefa", "abcdef", use_crc},
+      {"abcdef", "abcdefa", use_crc},
 
       // Small flat cords
-      {"aaaaaBBBBBcccccDDDDD", "aaaaaBBBBBcccccDDDDD"},
-      {"aaaaaBBBBBcccccDDDDD", "aaaaaBBBBBxccccDDDDD"},
-      {"aaaaaBBBBBcxcccDDDDD", "aaaaaBBBBBcccccDDDDD"},
-      {"aaaaaBBBBBxccccDDDDD", "aaaaaBBBBBcccccDDDDX"},
-      {"aaaaaBBBBBcccccDDDDDa", "aaaaaBBBBBcccccDDDDD"},
-      {"aaaaaBBBBBcccccDDDDD", "aaaaaBBBBBcccccDDDDDa"},
+      {"aaaaaBBBBBcccccDDDDD", "aaaaaBBBBBcccccDDDDD", use_crc},
+      {"aaaaaBBBBBcccccDDDDD", "aaaaaBBBBBxccccDDDDD", use_crc},
+      {"aaaaaBBBBBcxcccDDDDD", "aaaaaBBBBBcccccDDDDD", use_crc},
+      {"aaaaaBBBBBxccccDDDDD", "aaaaaBBBBBcccccDDDDX", use_crc},
+      {"aaaaaBBBBBcccccDDDDDa", "aaaaaBBBBBcccccDDDDD", use_crc},
+      {"aaaaaBBBBBcccccDDDDD", "aaaaaBBBBBcccccDDDDDa", use_crc},
 
       // Subcords
-      {subcord, subcord},
-      {subcord, "aaBBBBBccc"},
-      {subcord, "aaBBBBBccd"},
-      {subcord, "aaBBBBBccb"},
-      {subcord, "aaBBBBBxcb"},
-      {subcord, "aaBBBBBccca"},
-      {subcord, "aaBBBBBcc"},
+      {subcord, subcord, use_crc},
+      {subcord, "aaBBBBBccc", use_crc},
+      {subcord, "aaBBBBBccd", use_crc},
+      {subcord, "aaBBBBBccb", use_crc},
+      {subcord, "aaBBBBBxcb", use_crc},
+      {subcord, "aaBBBBBccca", use_crc},
+      {subcord, "aaBBBBBcc", use_crc},
 
       // Concats
-      {concat, concat},
+      {concat, concat, use_crc},
       {concat,
-       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBccccccccccccccccDDDDDDDDDDDDDDDD"},
+       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBccccccccccccccccDDDDDDDDDDDDDDDD",
+       use_crc},
       {concat,
-       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBcccccccccccccccxDDDDDDDDDDDDDDDD"},
+       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBcccccccccccccccxDDDDDDDDDDDDDDDD",
+       use_crc},
       {concat,
-       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBacccccccccccccccDDDDDDDDDDDDDDDD"},
+       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBacccccccccccccccDDDDDDDDDDDDDDDD",
+       use_crc},
       {concat,
-       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBccccccccccccccccDDDDDDDDDDDDDDD"},
+       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBccccccccccccccccDDDDDDDDDDDDDDD",
+       use_crc},
       {concat,
-       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBccccccccccccccccDDDDDDDDDDDDDDDDe"},
+       "aaaaaaaaaaaaaaaaBBBBBBBBBBBBBBBBccccccccccccccccDDDDDDDDDDDDDDDDe",
+       use_crc},
 
-      {concat, concat2},
+      {concat, concat2, use_crc},
   }};
 
   for (const auto& tc : test_cases) {
@@ -936,6 +1025,7 @@
 TEST_P(CordTest, CompareAfterAssign) {
   absl::Cord a("aaaaaa1111111");
   absl::Cord b("aaaaaa2222222");
+  MaybeHarden(a);
   a = "cccccc";
   b = "cccccc";
   EXPECT_EQ(a, b);
@@ -994,6 +1084,8 @@
       d.Append(a[GetUniformRandomUpTo(&rng, ABSL_ARRAYSIZE(a))]);
     }
     std::bernoulli_distribution coin_flip(0.5);
+    MaybeHarden(c);
+    MaybeHarden(d);
     TestCompare(coin_flip(rng) ? c : absl::Cord(std::string(c)),
                 coin_flip(rng) ? d : absl::Cord(std::string(d)), &rng);
   }
@@ -1119,6 +1211,7 @@
           EXPECT_EQ(external->size(), sv.size());
           delete external;
         });
+    MaybeHarden(cord);
     EXPECT_EQ(data, cord);
   }
 }
@@ -1134,7 +1227,7 @@
     EXPECT_EQ(data, absl::string_view(data_array.data(), data_array.size()));
     invoked = true;
   };
-  (void)absl::MakeCordFromExternal(data, releaser);
+  (void)MaybeHardened(absl::MakeCordFromExternal(data, releaser));
   EXPECT_TRUE(invoked);
 }
 
@@ -1147,11 +1240,11 @@
         invoked = true;
       });
   invoked = false;
-  (void)absl::MakeCordFromExternal(data, releaser);
+  (void)MaybeHardened(absl::MakeCordFromExternal(data, releaser));
   EXPECT_TRUE(invoked);
 
   invoked = false;
-  (void)absl::MakeCordFromExternal(data, *releaser);
+  (void)MaybeHardened(absl::MakeCordFromExternal(data, *releaser));
   EXPECT_TRUE(invoked);
 }
 
@@ -1165,20 +1258,21 @@
   };
 
   bool invoked = false;
-  (void)absl::MakeCordFromExternal("dummy", Releaser(&invoked));
+  (void)MaybeHardened(absl::MakeCordFromExternal("dummy", Releaser(&invoked)));
   EXPECT_TRUE(invoked);
 }
 
 TEST_P(CordTest, ConstructFromExternalNoArgLambda) {
   bool invoked = false;
-  (void)absl::MakeCordFromExternal("dummy", [&invoked]() { invoked = true; });
+  (void)MaybeHardened(
+      absl::MakeCordFromExternal("dummy", [&invoked]() { invoked = true; }));
   EXPECT_TRUE(invoked);
 }
 
 TEST_P(CordTest, ConstructFromExternalStringViewArgLambda) {
   bool invoked = false;
-  (void)absl::MakeCordFromExternal(
-      "dummy", [&invoked](absl::string_view) { invoked = true; });
+  (void)MaybeHardened(absl::MakeCordFromExternal(
+      "dummy", [&invoked](absl::string_view) { invoked = true; }));
   EXPECT_TRUE(invoked);
 }
 
@@ -1193,7 +1287,7 @@
 
   bool destroyed = false;
   Releaser releaser(&destroyed);
-  (void)absl::MakeCordFromExternal("dummy", releaser);
+  (void)MaybeHardened(absl::MakeCordFromExternal("dummy", releaser));
   EXPECT_TRUE(destroyed);
 }
 
@@ -1209,18 +1303,18 @@
   bool lvalue_invoked = false;
   bool rvalue_invoked = false;
   Releaser releaser = {&lvalue_invoked, &rvalue_invoked};
-  (void)absl::MakeCordFromExternal("", releaser);
+  (void)MaybeHardened(absl::MakeCordFromExternal("", releaser));
   EXPECT_FALSE(lvalue_invoked);
   EXPECT_TRUE(rvalue_invoked);
   rvalue_invoked = false;
 
-  (void)absl::MakeCordFromExternal("dummy", releaser);
+  (void)MaybeHardened(absl::MakeCordFromExternal("dummy", releaser));
   EXPECT_FALSE(lvalue_invoked);
   EXPECT_TRUE(rvalue_invoked);
   rvalue_invoked = false;
 
   // NOLINTNEXTLINE: suppress clang-tidy std::move on trivially copyable type.
-  (void)absl::MakeCordFromExternal("dummy", std::move(releaser));
+  (void)MaybeHardened(absl::MakeCordFromExternal("dummy", std::move(releaser)));
   EXPECT_FALSE(lvalue_invoked);
   EXPECT_TRUE(rvalue_invoked);
 }
@@ -1229,7 +1323,9 @@
   static const char* strings[] = {"", "hello", "there"};
   for (const char* str : strings) {
     absl::Cord dst("(prefix)");
+    MaybeHarden(dst);
     AddExternalMemory(str, &dst);
+    MaybeHarden(dst);
     dst.Append("(suffix)");
     EXPECT_EQ((std::string("(prefix)") + str + std::string("(suffix)")),
               std::string(dst));
@@ -1243,7 +1339,9 @@
   for (int offset = 0; offset <= s.size(); offset++) {
     for (int length = 0; length <= s.size() - offset; length++) {
       absl::Cord result(cord);
+      MaybeHarden(result);
       result.RemovePrefix(offset);
+      MaybeHarden(result);
       result.RemoveSuffix(result.size() - length);
       EXPECT_EQ(s.substr(offset, length), std::string(result))
           << offset << " " << length;
@@ -1254,8 +1352,10 @@
 TEST_P(CordTest, ExternalMemoryGet) {
   absl::Cord cord("hello");
   AddExternalMemory(" world!", &cord);
+  MaybeHarden(cord);
   AddExternalMemory(" how are ", &cord);
   cord.Append(" you?");
+  MaybeHarden(cord);
   std::string s = std::string(cord);
   for (int i = 0; i < s.size(); i++) {
     EXPECT_EQ(s[i], cord[i]);
@@ -1354,11 +1454,13 @@
 TEST_P(CordTest, Concat_Append) {
   // Create a rep of type CONCAT
   absl::Cord s1("foobarbarbarbarbar");
+  MaybeHarden(s1);
   s1.Append("abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg");
   size_t size = s1.size();
 
   // Create a copy of s1 and append to it.
   absl::Cord s2 = s1;
+  MaybeHarden(s2);
   s2.Append("x");
 
   // 7465150 modifies s1 when it shouldn't.
@@ -1378,6 +1480,7 @@
   for (char c : expected) {
     absl::Cord shared(cord);
     cord.Append(absl::string_view(&c, 1));
+    MaybeHarden(cord);
   }
   std::string value;
   absl::CopyCordToString(cord, &value);
@@ -1422,8 +1525,12 @@
 
 TEST_P(CordTest, HugeCord) {
   absl::Cord cord = MakeHuge("huge cord");
+  MaybeHarden(cord);
+
+  const size_t acceptable_delta =
+      100 + (UseCrc() ? sizeof(absl::cord_internal::CordRepCrc) : 0);
   EXPECT_LE(cord.size(), cord.EstimatedMemoryUsage());
-  EXPECT_GE(cord.size() + 100, cord.EstimatedMemoryUsage());
+  EXPECT_GE(cord.size() + acceptable_delta, cord.EstimatedMemoryUsage());
 }
 
 // Tests that Append() works ok when handed a self reference
@@ -1433,6 +1540,7 @@
   std::string control_data = "Abc";
   absl::Cord data(control_data);
   while (control_data.length() < 0x4000) {
+    MaybeHarden(data);
     data.Append(data);
     control_data.append(control_data);
     ASSERT_EQ(control_data, data);
@@ -1443,6 +1551,8 @@
   absl::Cord fragmented =
       absl::MakeFragmentedCord({"A ", "fragmented ", "Cord"});
 
+  MaybeHarden(fragmented);
+
   EXPECT_EQ("A fragmented Cord", fragmented);
 
   auto chunk_it = fragmented.chunk_begin();
@@ -1463,6 +1573,8 @@
   std::vector<absl::string_view> chunks = {"A ", "fragmented ", "Cord"};
   absl::Cord fragmented = absl::MakeFragmentedCord(chunks);
 
+  MaybeHarden(fragmented);
+
   EXPECT_EQ("A fragmented Cord", fragmented);
 
   auto chunk_it = fragmented.chunk_begin();
@@ -1565,22 +1677,26 @@
   VerifyChunkIterator(empty_cord, 0);
 
   absl::Cord small_buffer_cord("small cord");
+  MaybeHarden(small_buffer_cord);
   VerifyChunkIterator(small_buffer_cord, 1);
 
   absl::Cord flat_node_cord("larger than small buffer optimization");
+  MaybeHarden(flat_node_cord);
   VerifyChunkIterator(flat_node_cord, 1);
 
-  VerifyChunkIterator(
-      absl::MakeFragmentedCord({"a ", "small ", "fragmented ", "cord ", "for ",
-                                "testing ", "chunk ", "iterations."}),
-      8);
+  VerifyChunkIterator(MaybeHardened(absl::MakeFragmentedCord(
+                          {"a ", "small ", "fragmented ", "cord ", "for ",
+                           "testing ", "chunk ", "iterations."})),
+                      8);
 
   absl::Cord reused_nodes_cord(std::string(40, 'c'));
   reused_nodes_cord.Prepend(absl::Cord(std::string(40, 'b')));
+  MaybeHarden(reused_nodes_cord);
   reused_nodes_cord.Prepend(absl::Cord(std::string(40, 'a')));
   size_t expected_chunks = 3;
   for (int i = 0; i < 8; ++i) {
     reused_nodes_cord.Prepend(reused_nodes_cord);
+    MaybeHarden(reused_nodes_cord);
     expected_chunks *= 2;
     VerifyChunkIterator(reused_nodes_cord, expected_chunks);
   }
@@ -1706,27 +1822,33 @@
   VerifyCharIterator(empty_cord);
 
   absl::Cord small_buffer_cord("small cord");
+  MaybeHarden(small_buffer_cord);
   VerifyCharIterator(small_buffer_cord);
 
   absl::Cord flat_node_cord("larger than small buffer optimization");
+  MaybeHarden(flat_node_cord);
   VerifyCharIterator(flat_node_cord);
 
-  VerifyCharIterator(
+  VerifyCharIterator(MaybeHardened(
       absl::MakeFragmentedCord({"a ", "small ", "fragmented ", "cord ", "for ",
-                                "testing ", "character ", "iteration."}));
+                                "testing ", "character ", "iteration."})));
 
   absl::Cord reused_nodes_cord("ghi");
   reused_nodes_cord.Prepend(absl::Cord("def"));
   reused_nodes_cord.Prepend(absl::Cord("abc"));
   for (int i = 0; i < 4; ++i) {
     reused_nodes_cord.Prepend(reused_nodes_cord);
+    MaybeHarden(reused_nodes_cord);
     VerifyCharIterator(reused_nodes_cord);
   }
 
   RandomEngine rng(GTEST_FLAG_GET(random_seed));
   absl::Cord flat_cord(RandomLowercaseString(&rng, 256));
   absl::Cord subcords;
-  for (int i = 0; i < 4; ++i) subcords.Prepend(flat_cord.Subcord(16 * i, 128));
+  for (int i = 0; i < 4; ++i) {
+    subcords.Prepend(flat_cord.Subcord(16 * i, 128));
+    MaybeHarden(subcords);
+  }
   VerifyCharIterator(subcords);
 }
 
@@ -1751,6 +1873,8 @@
     cord.Append(absl::Cord(block));
   }
 
+  MaybeHarden(cord);
+
   for (size_t chunk_size :
        {kChunkSize1, kChunkSize2, kChunkSize3, kChunkSize4}) {
     absl::Cord::CharIterator it = cord.char_begin();
@@ -1768,6 +1892,7 @@
 TEST_P(CordTest, StreamingOutput) {
   absl::Cord c =
       absl::MakeFragmentedCord({"A ", "small ", "fragmented ", "Cord", "."});
+  MaybeHarden(c);
   std::stringstream output;
   output << c;
   EXPECT_EQ("A small fragmented Cord.", output.str());
@@ -1781,6 +1906,7 @@
       cord_chunks.push_back(absl::StrCat("[", i, "]"));
     }
     absl::Cord c = absl::MakeFragmentedCord(cord_chunks);
+    MaybeHarden(c);
 
     std::vector<std::string> iterated_chunks;
     absl::CordTestPeer::ForEachChunk(c,
@@ -1798,6 +1924,7 @@
   for (size_t pos = 0; pos < contents.size(); ++pos) {
     for (size_t count = contents.size() - pos; count > 0; --count) {
       absl::Cord c(contents);
+      MaybeHarden(c);
       absl::string_view flat = c.Flatten();
       c = flat.substr(pos, count);
       EXPECT_EQ(c, contents.substr(pos, count))
@@ -1810,12 +1937,16 @@
   absl::Cord c;
   absl::Format(&c, "There were %04d little %s.", 3, "pigs");
   EXPECT_EQ(c, "There were 0003 little pigs.");
+  MaybeHarden(c);
   absl::Format(&c, "And %-3llx bad wolf!", 1);
+  MaybeHarden(c);
   EXPECT_EQ(c, "There were 0003 little pigs.And 1   bad wolf!");
 }
 
 TEST_P(CordTest, Hardening) {
   absl::Cord cord("hello");
+  MaybeHarden(cord);
+
   // These statement should abort the program in all builds modes.
   EXPECT_DEATH_IF_SUPPORTED(cord.RemovePrefix(6), "");
   EXPECT_DEATH_IF_SUPPORTED(cord.RemoveSuffix(6), "");
@@ -1855,6 +1986,7 @@
   }
 
   for (int j = 0; j < 1000; ++j) {
+    MaybeHarden(cord);
     size_t offset = absl::Uniform(bitgen, 0u, cord.size());
     size_t length = absl::Uniform(bitgen, 100u, data.size());
     if (cord.size() == offset) {
@@ -1955,3 +2087,272 @@
   TestConstinitConstructor(
       absl::strings_internal::MakeStringConstant(LongView{}));
 }
+
+namespace {
+
+// Test helper that generates a populated cord for future manipulation.
+//
+// By test convention, all generated cords begin with the characters "abcde" at
+// the start of the first chunk.
+class PopulatedCordFactory {
+ public:
+  constexpr PopulatedCordFactory(absl::string_view name,
+                                 absl::Cord (*generator)())
+      : name_(name), generator_(generator) {}
+
+  absl::string_view Name() const { return name_; }
+  absl::Cord Generate() const { return generator_(); }
+
+ private:
+  absl::string_view name_;
+  absl::Cord (*generator_)();
+};
+
+// clang-format off
+// This array is constant-initialized in conformant compilers.
+PopulatedCordFactory cord_factories[] = {
+  {"sso", [] { return absl::Cord("abcde"); }},
+  {"flat", [] {
+    // Too large to live in SSO space, but small enough to be a simple FLAT.
+    absl::Cord flat(absl::StrCat("abcde", std::string(1000, 'x')));
+    flat.Flatten();
+    return flat;
+  }},
+  {"external", [] {
+    // A cheat: we are using a string literal as the external storage, so a
+    // no-op releaser is correct here.
+    return absl::MakeCordFromExternal("abcde External!", []{});
+  }},
+  {"external substring", [] {
+    // A cheat: we are using a string literal as the external storage, so a
+    // no-op releaser is correct here.
+    absl::Cord ext = absl::MakeCordFromExternal("-abcde External!", []{});
+    return absl::CordTestPeer::MakeSubstring(ext, 1, ext.size() - 1);
+  }},
+  {"substring", [] {
+    absl::Cord flat(absl::StrCat("-abcde", std::string(1000, 'x')));
+    flat.Flatten();
+    return flat.Subcord(1, 998);
+  }},
+  {"fragmented", [] {
+    std::string fragment = absl::StrCat("abcde", std::string(195, 'x'));
+    std::vector<std::string> fragments(200, fragment);
+    absl::Cord cord = absl::MakeFragmentedCord(fragments);
+    assert(cord.size() == 40000);
+    return cord;
+  }},
+};
+// clang-format on
+
+// Test helper that can mutate a cord, and possibly undo the mutation, for
+// testing.
+class CordMutator {
+ public:
+  constexpr CordMutator(absl::string_view name, void (*mutate)(absl::Cord&),
+                        void (*undo)(absl::Cord&) = nullptr)
+      : name_(name), mutate_(mutate), undo_(undo) {}
+
+  absl::string_view Name() const { return name_; }
+  void Mutate(absl::Cord& cord) const { mutate_(cord); }
+  bool CanUndo() const { return undo_ != nullptr; }
+  void Undo(absl::Cord& cord) const { undo_(cord); }
+
+ private:
+  absl::string_view name_;
+  void (*mutate_)(absl::Cord&);
+  void (*undo_)(absl::Cord&);
+};
+
+// clang-format off
+// This array is constant-initialized in conformant compilers.
+CordMutator cord_mutators[] ={
+  {"clear", [](absl::Cord& c) { c.Clear(); }},
+  {"overwrite", [](absl::Cord& c) { c = "overwritten"; }},
+  {
+    "append string",
+    [](absl::Cord& c) { c.Append("0123456789"); },
+    [](absl::Cord& c) { c.RemoveSuffix(10); }
+  },
+  {
+    "append cord",
+    [](absl::Cord& c) {
+      c.Append(absl::MakeFragmentedCord({"12345", "67890"}));
+    },
+    [](absl::Cord& c) { c.RemoveSuffix(10); }
+  },
+  {
+    "append checksummed cord",
+    [](absl::Cord& c) {
+      absl::Cord to_append = absl::MakeFragmentedCord({"12345", "67890"});
+      to_append.SetExpectedChecksum(999);
+      c.Append(to_append);
+    },
+    [](absl::Cord& c) { c.RemoveSuffix(10); }
+  },
+  {
+    "append self",
+    [](absl::Cord& c) { c.Append(c); },
+    [](absl::Cord& c) { c.RemoveSuffix(c.size() / 2); }
+  },
+  {
+    "prepend string",
+    [](absl::Cord& c) { c.Prepend("9876543210"); },
+    [](absl::Cord& c) { c.RemovePrefix(10); }
+  },
+  {
+    "prepend cord",
+    [](absl::Cord& c) {
+      c.Prepend(absl::MakeFragmentedCord({"98765", "43210"}));
+    },
+    [](absl::Cord& c) { c.RemovePrefix(10); }
+  },
+  {
+    "prepend checksummed cord",
+    [](absl::Cord& c) {
+      absl::Cord to_prepend = absl::MakeFragmentedCord({"98765", "43210"});
+      to_prepend.SetExpectedChecksum(999);
+      c.Prepend(to_prepend);
+    },
+    [](absl::Cord& c) { c.RemovePrefix(10); }
+  },
+  {
+    "prepend self",
+    [](absl::Cord& c) { c.Prepend(c); },
+    [](absl::Cord& c) { c.RemovePrefix(c.size() / 2); }
+  },
+  {"remove prefix", [](absl::Cord& c) { c.RemovePrefix(2); }},
+  {"remove suffix", [](absl::Cord& c) { c.RemoveSuffix(2); }},
+  {"subcord", [](absl::Cord& c) { c = c.Subcord(1, c.size() - 2); }},
+  {
+    "swap inline",
+    [](absl::Cord& c) {
+      absl::Cord other("swap");
+      c.swap(other);
+    }
+  },
+  {
+    "swap tree",
+    [](absl::Cord& c) {
+      absl::Cord other(std::string(10000, 'x'));
+      c.swap(other);
+    }
+  },
+};
+// clang-format on
+}  // namespace
+
+TEST_P(CordTest, ExpectedChecksum) {
+  for (const PopulatedCordFactory& factory : cord_factories) {
+    SCOPED_TRACE(factory.Name());
+    for (bool shared : {false, true}) {
+      SCOPED_TRACE(shared);
+
+      absl::Cord shared_cord_source = factory.Generate();
+      auto make_instance = [=] {
+        return shared ? shared_cord_source : factory.Generate();
+      };
+
+      const absl::Cord base_value = factory.Generate();
+      const std::string base_value_as_string(factory.Generate().Flatten());
+
+      absl::Cord c1 = make_instance();
+      EXPECT_FALSE(c1.ExpectedChecksum().has_value());
+
+      // Setting an expected checksum works, and retains the cord's bytes
+      c1.SetExpectedChecksum(12345);
+      EXPECT_EQ(c1.ExpectedChecksum().value_or(0), 12345);
+      EXPECT_EQ(c1, base_value);
+
+      // CRC persists through copies, assignments, and moves:
+      absl::Cord c1_copy_construct = c1;
+      EXPECT_EQ(c1_copy_construct.ExpectedChecksum().value_or(0), 12345);
+
+      absl::Cord c1_copy_assign;
+      c1_copy_assign = c1;
+      EXPECT_EQ(c1_copy_assign.ExpectedChecksum().value_or(0), 12345);
+
+      absl::Cord c1_move(std::move(c1_copy_assign));
+      EXPECT_EQ(c1_move.ExpectedChecksum().value_or(0), 12345);
+
+      EXPECT_EQ(c1.ExpectedChecksum().value_or(0), 12345);
+
+      // A CRC Cord compares equal to its non-CRC value.
+      EXPECT_EQ(c1, make_instance());
+
+      for (const CordMutator& mutator : cord_mutators) {
+        SCOPED_TRACE(mutator.Name());
+
+        // Test that mutating a cord removes its stored checksum
+        absl::Cord c2 = make_instance();
+        c2.SetExpectedChecksum(24680);
+
+        mutator.Mutate(c2);
+        EXPECT_EQ(c2.ExpectedChecksum(), absl::nullopt);
+
+        if (mutator.CanUndo()) {
+          // Undoing an operation should not restore the checksum
+          mutator.Undo(c2);
+          EXPECT_EQ(c2, base_value);
+          EXPECT_EQ(c2.ExpectedChecksum(), absl::nullopt);
+        }
+      }
+
+      absl::Cord c3 = make_instance();
+      c3.SetExpectedChecksum(999);
+      const absl::Cord& cc3 = c3;
+
+      // Test that all cord reading operations function in the face of an
+      // expected checksum.
+
+      // Test data precondition
+      ASSERT_TRUE(cc3.StartsWith("abcde"));
+
+      EXPECT_EQ(cc3.size(), base_value_as_string.size());
+      EXPECT_FALSE(cc3.empty());
+      EXPECT_EQ(cc3.Compare(base_value), 0);
+      EXPECT_EQ(cc3.Compare(base_value_as_string), 0);
+      EXPECT_EQ(cc3.Compare("wxyz"), -1);
+      EXPECT_EQ(cc3.Compare(absl::Cord("wxyz")), -1);
+      EXPECT_EQ(cc3.Compare("aaaa"), 1);
+      EXPECT_EQ(cc3.Compare(absl::Cord("aaaa")), 1);
+      EXPECT_EQ(absl::Cord("wxyz").Compare(cc3), 1);
+      EXPECT_EQ(absl::Cord("aaaa").Compare(cc3), -1);
+      EXPECT_TRUE(cc3.StartsWith("abcd"));
+      EXPECT_EQ(std::string(cc3), base_value_as_string);
+
+      std::string dest;
+      absl::CopyCordToString(cc3, &dest);
+      EXPECT_EQ(dest, base_value_as_string);
+
+      bool first_pass = true;
+      for (absl::string_view chunk : cc3.Chunks()) {
+        if (first_pass) {
+          EXPECT_TRUE(absl::StartsWith(chunk, "abcde"));
+        }
+        first_pass = false;
+      }
+      first_pass = true;
+      for (char ch : cc3.Chars()) {
+        if (first_pass) {
+          EXPECT_EQ(ch, 'a');
+        }
+        first_pass = false;
+      }
+      EXPECT_TRUE(absl::StartsWith(*cc3.chunk_begin(), "abcde"));
+      EXPECT_EQ(*cc3.char_begin(), 'a');
+
+      auto char_it = cc3.char_begin();
+      absl::Cord::Advance(&char_it, 2);
+      EXPECT_EQ(absl::Cord::AdvanceAndRead(&char_it, 2), "cd");
+      EXPECT_EQ(*char_it, 'e');
+      char_it = cc3.char_begin();
+      absl::Cord::Advance(&char_it, 2);
+      EXPECT_TRUE(absl::StartsWith(absl::Cord::ChunkRemaining(char_it), "cde"));
+
+      EXPECT_EQ(cc3[0], 'a');
+      EXPECT_EQ(cc3[4], 'e');
+      EXPECT_EQ(absl::HashOf(cc3), absl::HashOf(base_value));
+      EXPECT_EQ(absl::HashOf(cc3), absl::HashOf(base_value_as_string));
+    }
+  }
+}
diff --git a/absl/strings/internal/cord_internal.cc b/absl/strings/internal/cord_internal.cc
index 1767e6f..c9ceac9 100644
--- a/absl/strings/internal/cord_internal.cc
+++ b/absl/strings/internal/cord_internal.cc
@@ -19,6 +19,7 @@
 
 #include "absl/container/inlined_vector.h"
 #include "absl/strings/internal/cord_rep_btree.h"
+#include "absl/strings/internal/cord_rep_crc.h"
 #include "absl/strings/internal/cord_rep_flat.h"
 #include "absl/strings/internal/cord_rep_ring.h"
 
@@ -70,6 +71,9 @@
         rep = child;
         continue;
       }
+    } else if (rep->tag == CRC) {
+      CordRepCrc::Destroy(rep->crc());
+      rep = nullptr;
     } else {
       CordRepFlat::Delete(rep);
       rep = nullptr;
diff --git a/absl/strings/internal/cord_internal.h b/absl/strings/internal/cord_internal.h
index bfe5564..672bf17 100644
--- a/absl/strings/internal/cord_internal.h
+++ b/absl/strings/internal/cord_internal.h
@@ -87,9 +87,6 @@
   constexpr RefcountAndFlags() : count_{kRefIncrement} {}
   struct Immortal {};
   explicit constexpr RefcountAndFlags(Immortal) : count_(kImmortalFlag) {}
-  struct WithCrc {};
-  explicit constexpr RefcountAndFlags(WithCrc)
-      : count_(kCrcFlag | kRefIncrement) {}
 
   // Increments the reference count. Imposes no memory ordering.
   inline void Increment() {
@@ -125,32 +122,14 @@
     return count_.load(std::memory_order_acquire) >> kNumFlags;
   }
 
-  // Returns true if the referenced object carries a CRC value.
-  bool HasCrc() const {
-    return (count_.load(std::memory_order_relaxed) & kCrcFlag) != 0;
-  }
-
-  // Returns true iff the atomic integer is 1 and this node does not store
-  // a CRC.  When both these conditions are met, the current thread owns
-  // the reference and no other thread shares it, so its contents may be
-  // safely mutated.
-  //
-  // If the referenced item is shared, carries a CRC, or is immortal,
-  // it should not be modified in-place, and this function returns false.
-  //
-  // This call performs the memory barrier needed for the owning thread
-  // to act on the object, so that if it returns true, it may safely
-  // assume exclusive access to the object.
-  inline bool IsMutable() {
-    return (count_.load(std::memory_order_acquire)) == kRefIncrement;
-  }
-
-  // Returns whether the atomic integer is 1.  Similar to IsMutable(),
-  // but does not check for a stored CRC.  (An unshared node with a CRC is not
-  // mutable, because changing its data would invalidate the CRC.)
-  //
-  // When this returns true, there are no other references, and data sinks
-  // may safely adopt the children of the CordRep.
+  // Returns whether the atomic integer is 1.
+  // If the reference count is used in the conventional way, a
+  // reference count of 1 implies that the current thread owns the
+  // reference and no other thread shares it.
+  // This call performs the test for a reference count of one, and
+  // performs the memory barrier needed for the owning thread
+  // to act on the object, knowing that it has exclusive access to the
+  // object.  Always returns false when the immortal bit is set.
   inline bool IsOne() {
     return (count_.load(std::memory_order_acquire) & kRefcountMask) ==
            kRefIncrement;
@@ -170,14 +149,14 @@
     kNumFlags = 2,
 
     kImmortalFlag = 0x1,
-    kCrcFlag = 0x2,
+    kReservedFlag = 0x2,
     kRefIncrement = (1 << kNumFlags),
 
     // Bitmask to use when checking refcount by equality.  This masks out
     // all flags except kImmortalFlag, which is part of the refcount for
     // purposes of equality.  (A refcount of 0 or 1 does not count as 0 or 1
     // if the immortal bit is set.)
-    kRefcountMask = ~kCrcFlag,
+    kRefcountMask = ~kReservedFlag,
   };
 
   std::atomic<int32_t> count_;
@@ -192,6 +171,7 @@
 struct CordRepExternal;
 struct CordRepFlat;
 struct CordRepSubstring;
+struct CordRepCrc;
 class CordRepRing;
 class CordRepBtree;
 
@@ -199,18 +179,19 @@
 enum CordRepKind {
   CONCAT = 0,
   SUBSTRING = 1,
-  BTREE = 2,
-  RING = 3,
-  EXTERNAL = 4,
+  CRC = 2,
+  BTREE = 3,
+  RING = 4,
+  EXTERNAL = 5,
 
   // We have different tags for different sized flat arrays,
-  // starting with FLAT, and limited to MAX_FLAT_TAG. The 225 value is based on
+  // starting with FLAT, and limited to MAX_FLAT_TAG. The 226 value is based on
   // the current 'size to tag' encoding of 8 / 32 bytes. If a new tag is needed
   // in the future, then 'FLAT' and 'MAX_FLAT_TAG' should be adjusted as well
   // as the Tag <---> Size logic so that FLAT stil represents the minimum flat
   // allocation size. (32 bytes as of now).
-  FLAT = 5,
-  MAX_FLAT_TAG = 225
+  FLAT = 6,
+  MAX_FLAT_TAG = 226
 };
 
 // There are various locations where we want to check if some rep is a 'plain'
@@ -225,6 +206,18 @@
 static_assert(FLAT == EXTERNAL + 1, "EXTERNAL and FLAT not consecutive");
 
 struct CordRep {
+  // Result from an `extract edge` operation. Contains the (possibly changed)
+  // tree node as well as the extracted edge, or {tree, nullptr} if no edge
+  // could be extracted.
+  // On success, the returned `tree` value is null if `extracted` was the only
+  // data edge inside the tree, a data edge if there were only two data edges in
+  // the tree, or the (possibly new / smaller) remaining tree with the extracted
+  // data edge removed.
+  struct ExtractResult {
+    CordRep* tree;
+    CordRep* extracted;
+  };
+
   CordRep() = default;
   constexpr CordRep(RefcountAndFlags::Immortal immortal, size_t l)
       : length(l), refcount(immortal), tag(EXTERNAL), storage{} {}
@@ -251,6 +244,7 @@
   constexpr bool IsRing() const { return tag == RING; }
   constexpr bool IsConcat() const { return tag == CONCAT; }
   constexpr bool IsSubstring() const { return tag == SUBSTRING; }
+  constexpr bool IsCrc() const { return tag == CRC; }
   constexpr bool IsExternal() const { return tag == EXTERNAL; }
   constexpr bool IsFlat() const { return tag >= FLAT; }
   constexpr bool IsBtree() const { return tag == BTREE; }
@@ -261,6 +255,8 @@
   inline const CordRepConcat* concat() const;
   inline CordRepSubstring* substring();
   inline const CordRepSubstring* substring() const;
+  inline CordRepCrc* crc();
+  inline const CordRepCrc* crc() const;
   inline CordRepExternal* external();
   inline const CordRepExternal* external() const;
   inline CordRepFlat* flat();
@@ -289,6 +285,13 @@
 
   uint8_t depth() const { return storage[0]; }
   void set_depth(uint8_t depth) { storage[0] = depth; }
+
+  // Extracts the right-most flat in the provided concat tree if the entire path
+  // to that flat is not shared, and the flat has the requested extra capacity.
+  // Returns the (potentially new) top level tree node and the extracted flat,
+  // or {tree, nullptr} if no flat was extracted.
+  static ExtractResult ExtractAppendBuffer(CordRepConcat* tree,
+                                           size_t extra_capacity);
 };
 
 struct CordRepSubstring : public CordRep {
diff --git a/absl/strings/internal/cord_internal_test.cc b/absl/strings/internal/cord_internal_test.cc
deleted file mode 100644
index 0758dfe..0000000
--- a/absl/strings/internal/cord_internal_test.cc
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright 2021 The Abseil Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "absl/strings/internal/cord_internal.h"
-
-#include "gmock/gmock.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace cord_internal {
-
-TEST(RefcountAndFlags, NormalRefcount) {
-  for (bool expect_high_refcount : {false, true}) {
-    SCOPED_TRACE(expect_high_refcount);
-    RefcountAndFlags refcount;
-    // count = 1
-
-    EXPECT_FALSE(refcount.HasCrc());
-    EXPECT_TRUE(refcount.IsMutable());
-    EXPECT_TRUE(refcount.IsOne());
-
-    refcount.Increment();
-    // count = 2
-
-    EXPECT_FALSE(refcount.HasCrc());
-    EXPECT_FALSE(refcount.IsMutable());
-    EXPECT_FALSE(refcount.IsOne());
-
-    // Decrementing should return true, since a reference is outstanding.
-    if (expect_high_refcount) {
-      EXPECT_TRUE(refcount.DecrementExpectHighRefcount());
-    } else {
-      EXPECT_TRUE(refcount.Decrement());
-    }
-    // count = 1
-
-    EXPECT_FALSE(refcount.HasCrc());
-    EXPECT_TRUE(refcount.IsMutable());
-    EXPECT_TRUE(refcount.IsOne());
-
-    // One more decremnt will return false, as no references remain.
-    if (expect_high_refcount) {
-      EXPECT_FALSE(refcount.DecrementExpectHighRefcount());
-    } else {
-      EXPECT_FALSE(refcount.Decrement());
-    }
-  }
-}
-
-TEST(RefcountAndFlags, CrcRefcount) {
-  for (bool expect_high_refcount : {false, true}) {
-    SCOPED_TRACE(expect_high_refcount);
-    RefcountAndFlags refcount(RefcountAndFlags::WithCrc{});
-    // count = 1
-
-    // A CRC-carrying node is never mutable, but can be unshared
-    EXPECT_TRUE(refcount.HasCrc());
-    EXPECT_FALSE(refcount.IsMutable());
-    EXPECT_TRUE(refcount.IsOne());
-
-    refcount.Increment();
-    // count = 2
-
-    EXPECT_TRUE(refcount.HasCrc());
-    EXPECT_FALSE(refcount.IsMutable());
-    EXPECT_FALSE(refcount.IsOne());
-
-    // Decrementing should return true, since a reference is outstanding.
-    if (expect_high_refcount) {
-      EXPECT_TRUE(refcount.DecrementExpectHighRefcount());
-    } else {
-      EXPECT_TRUE(refcount.Decrement());
-    }
-    // count = 1
-
-    EXPECT_TRUE(refcount.HasCrc());
-    EXPECT_FALSE(refcount.IsMutable());
-    EXPECT_TRUE(refcount.IsOne());
-
-    // One more decremnt will return false, as no references remain.
-    if (expect_high_refcount) {
-      EXPECT_FALSE(refcount.DecrementExpectHighRefcount());
-    } else {
-      EXPECT_FALSE(refcount.Decrement());
-    }
-  }
-}
-
-TEST(RefcountAndFlags, ImmortalRefcount) {
-  RefcountAndFlags immortal_refcount(RefcountAndFlags::Immortal{});
-
-  for (int i = 0; i < 100; ++i) {
-    // An immortal refcount is never unshared, and decrementing never causes
-    // a collection.
-    EXPECT_FALSE(immortal_refcount.HasCrc());
-    EXPECT_FALSE(immortal_refcount.IsMutable());
-    EXPECT_FALSE(immortal_refcount.IsOne());
-    EXPECT_TRUE(immortal_refcount.Decrement());
-    EXPECT_TRUE(immortal_refcount.DecrementExpectHighRefcount());
-  }
-}
-
-}  // namespace cord_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
diff --git a/absl/strings/internal/cord_rep_btree.cc b/absl/strings/internal/cord_rep_btree.cc
index 4404f33..7cefcc5 100644
--- a/absl/strings/internal/cord_rep_btree.cc
+++ b/absl/strings/internal/cord_rep_btree.cc
@@ -216,8 +216,8 @@
 // propagate node changes up the stack.
 template <EdgeType edge_type>
 struct StackOperations {
-  // Returns true if the node at 'depth' is mutable, i.e. has a refcount
-  // of one, carries no CRC, and all of its parent nodes have a refcount of one.
+  // Returns true if the node at 'depth' is not shared, i.e. has a refcount
+  // of one and all of its parent nodes have a refcount of one.
   inline bool owned(int depth) const { return depth < share_depth; }
 
   // Returns the node at 'depth'.
@@ -228,11 +228,11 @@
   inline CordRepBtree* BuildStack(CordRepBtree* tree, int depth) {
     assert(depth <= tree->height());
     int current_depth = 0;
-    while (current_depth < depth && tree->refcount.IsMutable()) {
+    while (current_depth < depth && tree->refcount.IsOne()) {
       stack[current_depth++] = tree;
       tree = tree->Edge(edge_type)->btree();
     }
-    share_depth = current_depth + (tree->refcount.IsMutable() ? 1 : 0);
+    share_depth = current_depth + (tree->refcount.IsOne() ? 1 : 0);
     while (current_depth < depth) {
       stack[current_depth++] = tree;
       tree = tree->Edge(edge_type)->btree();
@@ -241,17 +241,17 @@
   }
 
   // Builds a stack with the invariant that all nodes are private owned / not
-  // shared and carry no CRC data. This is used in iterative updates where a
-  // previous propagation guaranteed all nodes have this property.
+  // shared. This is used in iterative updates where a previous propagation
+  // guaranteed all nodes are owned / private.
   inline void BuildOwnedStack(CordRepBtree* tree, int height) {
     assert(height <= CordRepBtree::kMaxHeight);
     int depth = 0;
     while (depth < height) {
-      assert(tree->refcount.IsMutable());
+      assert(tree->refcount.IsOne());
       stack[depth++] = tree;
       tree = tree->Edge(edge_type)->btree();
     }
-    assert(tree->refcount.IsMutable());
+    assert(tree->refcount.IsOne());
     share_depth = depth + 1;
   }
 
@@ -336,12 +336,12 @@
     return Unwind</*propagate=*/true>(tree, depth, length, result);
   }
 
-  // `share_depth` contains the depth at which the nodes in the stack cannot
-  // be mutated. I.e., if the top most level is shared (i.e.:
-  // `!refcount.IsMutable()`), then `share_depth` is 0. If the 2nd node
-  // is shared (and implicitly all nodes below that) then `share_depth` is 1,
-  // etc. A `share_depth` greater than the depth of the stack indicates that
-  // none of the nodes in the stack are shared.
+  // `share_depth` contains the depth at which the nodes in the stack become
+  // shared. I.e., if the top most level is shared (i.e.: `!refcount.IsOne()`),
+  // then `share_depth` is 0. If the 2nd node is shared (and implicitly all
+  // nodes below that) then `share_depth` is 1, etc. A `share_depth` greater
+  // than the depth of the stack indicates that none of the nodes in the stack
+  // are shared.
   int share_depth;
 
   NodeStack stack;
@@ -773,7 +773,7 @@
 
 CordRep* CordRepBtree::ExtractFront(CordRepBtree* tree) {
   CordRep* front = tree->Edge(tree->begin());
-  if (tree->refcount.IsMutable()) {
+  if (tree->refcount.IsOne()) {
     Unref(tree->Edges(tree->begin() + 1, tree->end()));
     CordRepBtree::Delete(tree);
   } else {
@@ -786,7 +786,7 @@
 CordRepBtree* CordRepBtree::ConsumeBeginTo(CordRepBtree* tree, size_t end,
                                            size_t new_length) {
   assert(end <= tree->end());
-  if (tree->refcount.IsMutable()) {
+  if (tree->refcount.IsOne()) {
     Unref(tree->Edges(end, tree->end()));
     tree->set_end(end);
     tree->length = new_length;
@@ -813,13 +813,13 @@
 
   size_t length = len - n;
   int height = tree->height();
-  bool is_mutable = tree->refcount.IsMutable();
+  bool is_mutable = tree->refcount.IsOne();
 
   // Extract all top nodes which are reduced to size = 1
   Position pos = tree->IndexOfLength(length);
   while (pos.index == tree->begin()) {
     CordRep* edge = ExtractFront(tree);
-    is_mutable &= edge->refcount.IsMutable();
+    is_mutable &= edge->refcount.IsOne();
     if (height-- == 0) return ResizeEdge(edge, length, is_mutable);
     tree = edge->btree();
     pos = tree->IndexOfLength(length);
@@ -835,8 +835,8 @@
   length = pos.n;
   while (length != edge->length) {
     // ConsumeBeginTo guarantees `tree` is a clean, privately owned copy.
-    assert(tree->refcount.IsMutable());
-    const bool edge_is_mutable = edge->refcount.IsMutable();
+    assert(tree->refcount.IsOne());
+    const bool edge_is_mutable = edge->refcount.IsOne();
 
     if (height-- == 0) {
       tree->edges_[pos.index] = ResizeEdge(edge, length, edge_is_mutable);
@@ -973,7 +973,7 @@
 Span<char> CordRepBtree::GetAppendBufferSlow(size_t size) {
   // The inlined version in `GetAppendBuffer()` deals with all heights <= 3.
   assert(height() >= 4);
-  assert(refcount.IsMutable());
+  assert(refcount.IsOne());
 
   // Build a stack of nodes we may potentially need to update if we find a
   // non-shared FLAT with capacity at the leaf level.
@@ -982,13 +982,13 @@
   CordRepBtree* stack[kMaxDepth];
   for (int i = 0; i < depth; ++i) {
     node = node->Edge(kBack)->btree();
-    if (!node->refcount.IsMutable()) return {};
+    if (!node->refcount.IsOne()) return {};
     stack[i] = node;
   }
 
   // Must be a privately owned, mutable flat.
   CordRep* const edge = node->Edge(kBack);
-  if (!edge->refcount.IsMutable() || edge->tag < FLAT) return {};
+  if (!edge->refcount.IsOne() || edge->tag < FLAT) return {};
 
   // Must have capacity.
   const size_t avail = edge->flat()->Capacity() - edge->length;
@@ -1123,6 +1123,79 @@
   return nullptr;
 }
 
+CordRepBtree::ExtractResult CordRepBtree::ExtractAppendBuffer(
+    CordRepBtree* tree, size_t extra_capacity) {
+  int depth = 0;
+  NodeStack stack;
+
+  // Set up default 'no success' result which is {tree, nullptr}.
+  ExtractResult result;
+  result.tree = tree;
+  result.extracted = nullptr;
+
+  // Dive down the right side of the tree, making sure no edges are shared.
+  while (tree->height() > 0) {
+    if (!tree->refcount.IsOne()) return result;
+    stack[depth++] = tree;
+    tree = tree->Edge(kBack)->btree();
+  }
+  if (!tree->refcount.IsOne()) return result;
+
+  // Validate we ended on a non shared flat.
+  CordRep* rep = tree->Edge(kBack);
+  if (!(rep->IsFlat() && rep->refcount.IsOne())) return result;
+
+  // Verify it has at least the requested extra capacity.
+  CordRepFlat* flat = rep->flat();
+  const size_t length = flat->length;
+  const size_t avail = flat->Capacity() - flat->length;
+  if (extra_capacity > avail) return result;
+
+  // Set the extracted flat in the result.
+  result.extracted = flat;
+
+  // Cascading delete all nodes that become empty.
+  while (tree->size() == 1) {
+    CordRepBtree::Delete(tree);
+    if (--depth < 0) {
+      // We consumed the entire tree: return nullptr for new tree.
+      result.tree = nullptr;
+      return result;
+    }
+    rep = tree;
+    tree = stack[depth];
+  }
+
+  // Remove the edge or cascaded up parent node.
+  tree->set_end(tree->end() - 1);
+  tree->length -= length;
+
+  // Adjust lengths up the tree.
+  while (depth > 0) {
+    tree = stack[--depth];
+    tree->length -= length;
+  }
+
+  // Remove unnecessary top nodes with size = 1. This may iterate all the way
+  // down to the leaf node in which case we simply return the remaining last
+  // edge in that node and the extracted flat.
+  while (tree->size() == 1) {
+    int height = tree->height();
+    rep = tree->Edge(kBack);
+    Delete(tree);
+    if (height == 0) {
+      // We consumed the leaf: return the sole data edge as the new tree.
+      result.tree = rep;
+      return result;
+    }
+    tree = rep->btree();
+  }
+
+  // Done: return the (new) top level node and extracted flat.
+  result.tree = tree;
+  return result;
+}
+
 }  // namespace cord_internal
 ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/strings/internal/cord_rep_btree.h b/absl/strings/internal/cord_rep_btree.h
index bb38f0c..0b44509 100644
--- a/absl/strings/internal/cord_rep_btree.h
+++ b/absl/strings/internal/cord_rep_btree.h
@@ -240,11 +240,41 @@
   // length of the flat node and involved tree nodes have been increased by
   // `span.length()`. The caller is responsible for immediately assigning values
   // to all uninitialized data reference by the returned span.
-  // Requires `this->refcount.IsMutable()`: this function forces the
-  // caller to do this fast path check on the top level node, as this is the
-  // most commonly shared node of a cord tree.
+  // Requires `this->refcount.IsOne()`: this function forces the caller to do
+  // this fast path check on the top level node, as this is the most commonly
+  // shared node of a cord tree.
   Span<char> GetAppendBuffer(size_t size);
 
+  // Extracts the right-most data edge from this tree iff:
+  // - the tree and all internal edges to the right-most node are not shared.
+  // - the right-most node is a FLAT node and not shared.
+  // - the right-most node has at least the desired extra capacity.
+  //
+  // Returns {tree, nullptr} if any of the above conditions are not met.
+  // This method effectively removes data from the tree. The intent of this
+  // method is to allow applications appending small string data to use
+  // pre-existing capacity, and add the modified rep back to the tree.
+  //
+  // Simplified such code would look similar to this:
+  //   void MyTreeBuilder::Append(string_view data) {
+  //     ExtractResult result = CordRepBtree::ExtractAppendBuffer(tree_, 1);
+  //     if (CordRep* rep = result.extracted) {
+  //       size_t available = rep->Capacity() - rep->length;
+  //       size_t n = std::min(data.size(), n);
+  //       memcpy(rep->Data(), data.data(), n);
+  //       rep->length += n;
+  //       data.remove_prefix(n);
+  //       if (!result.tree->IsBtree()) {
+  //         tree_ = CordRepBtree::Create(result.tree);
+  //       }
+  //       tree_ = CordRepBtree::Append(tree_, rep);
+  //     }
+  //     ...
+  //     // Remaining edge in `result.tree`.
+  //   }
+  static ExtractResult ExtractAppendBuffer(CordRepBtree* tree,
+                                           size_t extra_capacity = 1);
+
   // Returns the `height` of the tree. The height of a tree is limited to
   // kMaxHeight. `height` is implemented as an `int` as in some places we
   // use negative (-1) values for 'data edges'.
@@ -849,7 +879,7 @@
 }
 
 inline Span<char> CordRepBtree::GetAppendBuffer(size_t size) {
-  assert(refcount.IsMutable());
+  assert(refcount.IsOne());
   CordRepBtree* tree = this;
   const int height = this->height();
   CordRepBtree* n1 = tree;
@@ -858,21 +888,21 @@
   switch (height) {
     case 3:
       tree = tree->Edge(kBack)->btree();
-      if (!tree->refcount.IsMutable()) return {};
+      if (!tree->refcount.IsOne()) return {};
       n2 = tree;
       ABSL_FALLTHROUGH_INTENDED;
     case 2:
       tree = tree->Edge(kBack)->btree();
-      if (!tree->refcount.IsMutable()) return {};
+      if (!tree->refcount.IsOne()) return {};
       n1 = tree;
       ABSL_FALLTHROUGH_INTENDED;
     case 1:
       tree = tree->Edge(kBack)->btree();
-      if (!tree->refcount.IsMutable()) return {};
+      if (!tree->refcount.IsOne()) return {};
       ABSL_FALLTHROUGH_INTENDED;
     case 0:
       CordRep* edge = tree->Edge(kBack);
-      if (!edge->refcount.IsMutable()) return {};
+      if (!edge->refcount.IsOne()) return {};
       if (edge->tag < FLAT) return {};
       size_t avail = edge->flat()->Capacity() - edge->length;
       if (avail == 0) return {};
diff --git a/absl/strings/internal/cord_rep_btree_test.cc b/absl/strings/internal/cord_rep_btree_test.cc
index be9473d..1d0c68b 100644
--- a/absl/strings/internal/cord_rep_btree_test.cc
+++ b/absl/strings/internal/cord_rep_btree_test.cc
@@ -128,6 +128,16 @@
   return true;
 }
 
+MATCHER_P2(EqExtractResult, tree, rep, "Equals ExtractResult") {
+  if (arg.tree != tree || arg.extracted != rep) {
+    *result_listener << "Expected {" << static_cast<const void*>(tree) << ", "
+                     << static_cast<const void*>(rep) << "}, got {" << arg.tree
+                     << ", " << arg.extracted << "}";
+    return false;
+  }
+  return true;
+}
+
 // DataConsumer is a simple helper class used by tests to 'consume' string
 // fragments from the provided input in forward or backward direction.
 class DataConsumer {
@@ -1483,6 +1493,125 @@
   }
 }
 
+// Convenience helper for CordRepBtree::ExtractAppendBuffer
+CordRepBtree::ExtractResult ExtractLast(CordRepBtree* input, size_t cap = 1) {
+  return CordRepBtree::ExtractAppendBuffer(input, cap);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferLeafSingleFlat) {
+  CordRep* flat = MakeFlat("Abc");
+  CordRepBtree* leaf = CordRepBtree::Create(flat);
+  EXPECT_THAT(ExtractLast(leaf), EqExtractResult(nullptr, flat));
+  CordRep::Unref(flat);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferNodeSingleFlat) {
+  CordRep* flat = MakeFlat("Abc");
+  CordRepBtree* leaf = CordRepBtree::Create(flat);
+  CordRepBtree* node = CordRepBtree::New(leaf);
+  EXPECT_THAT(ExtractLast(node), EqExtractResult(nullptr, flat));
+  CordRep::Unref(flat);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferLeafTwoFlats) {
+  std::vector<CordRep*> flats = CreateFlatsFromString("abcdef", 3);
+  CordRepBtree* leaf = CreateTree(flats);
+  EXPECT_THAT(ExtractLast(leaf), EqExtractResult(flats[0], flats[1]));
+  CordRep::Unref(flats[0]);
+  CordRep::Unref(flats[1]);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferNodeTwoFlats) {
+  std::vector<CordRep*> flats = CreateFlatsFromString("abcdef", 3);
+  CordRepBtree* leaf = CreateTree(flats);
+  CordRepBtree* node = CordRepBtree::New(leaf);
+  EXPECT_THAT(ExtractLast(node), EqExtractResult(flats[0], flats[1]));
+  CordRep::Unref(flats[0]);
+  CordRep::Unref(flats[1]);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferNodeTwoFlatsInTwoLeafs) {
+  std::vector<CordRep*> flats = CreateFlatsFromString("abcdef", 3);
+  CordRepBtree* leaf1 = CordRepBtree::Create(flats[0]);
+  CordRepBtree* leaf2 = CordRepBtree::Create(flats[1]);
+  CordRepBtree* node = CordRepBtree::New(leaf1, leaf2);
+  EXPECT_THAT(ExtractLast(node), EqExtractResult(flats[0], flats[1]));
+  CordRep::Unref(flats[0]);
+  CordRep::Unref(flats[1]);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferLeafThreeFlats) {
+  std::vector<CordRep*> flats = CreateFlatsFromString("abcdefghi", 3);
+  CordRepBtree* leaf = CreateTree(flats);
+  EXPECT_THAT(ExtractLast(leaf), EqExtractResult(leaf, flats[2]));
+  CordRep::Unref(flats[2]);
+  CordRep::Unref(leaf);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferNodeThreeFlatsRightNoFolding) {
+  CordRep* flat = MakeFlat("Abc");
+  std::vector<CordRep*> flats = CreateFlatsFromString("defghi", 3);
+  CordRepBtree* leaf1 = CordRepBtree::Create(flat);
+  CordRepBtree* leaf2 = CreateTree(flats);
+  CordRepBtree* node = CordRepBtree::New(leaf1, leaf2);
+  EXPECT_THAT(ExtractLast(node), EqExtractResult(node, flats[1]));
+  EXPECT_THAT(node->Edges(), ElementsAre(leaf1, leaf2));
+  EXPECT_THAT(leaf1->Edges(), ElementsAre(flat));
+  EXPECT_THAT(leaf2->Edges(), ElementsAre(flats[0]));
+  CordRep::Unref(node);
+  CordRep::Unref(flats[1]);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferNodeThreeFlatsRightLeafFolding) {
+  CordRep* flat = MakeFlat("Abc");
+  std::vector<CordRep*> flats = CreateFlatsFromString("defghi", 3);
+  CordRepBtree* leaf1 = CreateTree(flats);
+  CordRepBtree* leaf2 = CordRepBtree::Create(flat);
+  CordRepBtree* node = CordRepBtree::New(leaf1, leaf2);
+  EXPECT_THAT(ExtractLast(node), EqExtractResult(leaf1, flat));
+  EXPECT_THAT(leaf1->Edges(), ElementsAreArray(flats));
+  CordRep::Unref(leaf1);
+  CordRep::Unref(flat);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferNoCapacity) {
+  std::vector<CordRep*> flats = CreateFlatsFromString("abcdef", 3);
+  CordRepBtree* leaf = CreateTree(flats);
+  size_t avail = flats[1]->flat()->Capacity() - flats[1]->length;
+  EXPECT_THAT(ExtractLast(leaf, avail + 1), EqExtractResult(leaf, nullptr));
+  EXPECT_THAT(ExtractLast(leaf, avail), EqExtractResult(flats[0], flats[1]));
+  CordRep::Unref(flats[0]);
+  CordRep::Unref(flats[1]);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferNotFlat) {
+  std::vector<CordRep*> flats = CreateFlatsFromString("abcdef", 3);
+  auto substr = MakeSubstring(1, 2, flats[1]);
+  CordRepBtree* leaf = CreateTree({flats[0], substr});
+  EXPECT_THAT(ExtractLast(leaf), EqExtractResult(leaf, nullptr));
+  CordRep::Unref(leaf);
+}
+
+TEST(CordRepBtreeTest, ExtractAppendBufferShared) {
+  std::vector<CordRep*> flats = CreateFlatsFromString("abcdef", 3);
+  CordRepBtree* leaf = CreateTree(flats);
+
+  CordRep::Ref(flats[1]);
+  EXPECT_THAT(ExtractLast(leaf), EqExtractResult(leaf, nullptr));
+  CordRep::Unref(flats[1]);
+
+  CordRep::Ref(leaf);
+  EXPECT_THAT(ExtractLast(leaf), EqExtractResult(leaf, nullptr));
+  CordRep::Unref(leaf);
+
+  CordRepBtree* node = CordRepBtree::New(leaf);
+  CordRep::Ref(node);
+  EXPECT_THAT(ExtractLast(node), EqExtractResult(node, nullptr));
+  CordRep::Unref(node);
+
+  CordRep::Unref(node);
+}
+
 }  // namespace
 }  // namespace cord_internal
 ABSL_NAMESPACE_END
diff --git a/absl/strings/internal/cord_rep_concat.cc b/absl/strings/internal/cord_rep_concat.cc
new file mode 100644
index 0000000..3457b55
--- /dev/null
+++ b/absl/strings/internal/cord_rep_concat.cc
@@ -0,0 +1,63 @@
+// Copyright 2021 The Abseil Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <cstdint>
+
+#include "absl/base/config.h"
+#include "absl/container/inlined_vector.h"
+#include "absl/strings/internal/cord_internal.h"
+#include "absl/strings/internal/cord_rep_flat.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+
+CordRepConcat::ExtractResult CordRepConcat::ExtractAppendBuffer(
+    CordRepConcat* tree, size_t extra_capacity) {
+  absl::InlinedVector<CordRepConcat*, kInlinedVectorSize> stack;
+  CordRepConcat* concat = tree;
+  CordRep* rep = concat->right;
+
+  // Dive down the tree, making sure no edges are shared
+  while (concat->refcount.IsOne() && rep->IsConcat()) {
+    stack.push_back(concat);
+    concat = rep->concat();
+    rep = concat->right;
+  }
+  // Validate we ended on a non shared flat.
+  if (concat->refcount.IsOne() && rep->IsFlat() &&
+      rep->refcount.IsOne()) {
+    // Verify it has at least the requested extra capacity
+    CordRepFlat* flat = rep->flat();
+    size_t remaining = flat->Capacity() - flat->length;
+    if (extra_capacity > remaining) return {tree, nullptr};
+
+    // Check if we have a parent to adjust, or if we must return the left node.
+    rep = concat->left;
+    if (!stack.empty()) {
+      stack.back()->right = rep;
+      for (CordRepConcat* parent : stack) {
+        parent->length -= flat->length;
+      }
+      rep = tree;
+    }
+    delete concat;
+    return {rep, flat};
+  }
+  return {tree, nullptr};
+}
+
+}  // namespace cord_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/absl/strings/internal/cord_rep_concat_test.cc b/absl/strings/internal/cord_rep_concat_test.cc
new file mode 100644
index 0000000..32bab97
--- /dev/null
+++ b/absl/strings/internal/cord_rep_concat_test.cc
@@ -0,0 +1,143 @@
+// Copyright 2021 The Abseil Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <cstdint>
+#include <utility>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "absl/base/config.h"
+#include "absl/strings/internal/cord_internal.h"
+#include "absl/strings/internal/cord_rep_test_util.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+namespace {
+
+using ::absl::cordrep_testing::MakeFlat;
+using ::absl::cordrep_testing::MakeSubstring;
+using ::testing::Eq;
+
+MATCHER_P2(EqExtractResult, tree, rep, "Equals ExtractResult") {
+  if (arg.tree != tree || arg.extracted != rep) {
+    *result_listener << "Expected {" << static_cast<const void*>(tree) << ", "
+                     << static_cast<const void*>(rep) << "}, got {" << arg.tree
+                     << ", " << arg.extracted << "}";
+    return false;
+  }
+  return true;
+}
+
+CordRepConcat* MakeConcat(CordRep* left, CordRep* right, int depth) {
+  CordRepConcat* concat = new CordRepConcat;
+  concat->tag = CONCAT;
+  concat->set_depth(depth);
+  concat->length = left->length + right->length;
+  concat->left = left;
+  concat->right = right;
+  return concat;
+}
+
+CordRepConcat::ExtractResult ExtractLast(CordRepConcat* concat,
+                                         size_t extra_capacity = 1) {
+  return CordRepConcat::ExtractAppendBuffer(concat, extra_capacity);
+}
+
+TEST(CordRepConcatTest, ExtractAppendBufferTwoFlats) {
+  CordRepFlat* flat1 = MakeFlat("abc");
+  CordRepFlat* flat2 = MakeFlat("defg");
+  CordRepConcat* concat = MakeConcat(flat1, flat2, 0);
+  EXPECT_THAT(ExtractLast(concat), EqExtractResult(flat1, flat2));
+  CordRep::Unref(flat1);
+  CordRep::Unref(flat2);
+}
+
+TEST(CordRepConcatTest, ExtractAppendBufferThreeFlatsOne) {
+  CordRepFlat* flat1 = MakeFlat("abc");
+  CordRepFlat* flat2 = MakeFlat("defg");
+  CordRepFlat* flat3 = MakeFlat("hijkl");
+  CordRepConcat* lconcat = MakeConcat(flat1, flat2, 0);
+  CordRepConcat* concat = MakeConcat(lconcat, flat3, 1);
+  EXPECT_THAT(ExtractLast(concat), EqExtractResult(lconcat, flat3));
+  ASSERT_THAT(lconcat->length, Eq(7));
+  CordRep::Unref(lconcat);
+  CordRep::Unref(flat3);
+}
+
+TEST(CordRepConcatTest, ExtractAppendBufferThreeFlatsTwo) {
+  CordRepFlat* flat1 = MakeFlat("hijkl");
+  CordRepFlat* flat2 = MakeFlat("abc");
+  CordRepFlat* flat3 = MakeFlat("defg");
+  CordRepConcat* rconcat = MakeConcat(flat2, flat3, 0);
+  CordRepConcat* concat = MakeConcat(flat1, rconcat, 1);
+  EXPECT_THAT(ExtractLast(concat), EqExtractResult(concat, flat3));
+  ASSERT_THAT(concat->length, Eq(8));
+  CordRep::Unref(concat);
+  CordRep::Unref(flat3);
+}
+
+TEST(CordRepConcatTest, ExtractAppendBufferShared) {
+  CordRepFlat* flat1 = MakeFlat("hijkl");
+  CordRepFlat* flat2 = MakeFlat("abc");
+  CordRepFlat* flat3 = MakeFlat("defg");
+  CordRepConcat* rconcat = MakeConcat(flat2, flat3, 0);
+  CordRepConcat* concat = MakeConcat(flat1, rconcat, 1);
+
+  CordRep::Ref(concat);
+  EXPECT_THAT(ExtractLast(concat), EqExtractResult(concat, nullptr));
+  CordRep::Unref(concat);
+
+  CordRep::Ref(rconcat);
+  EXPECT_THAT(ExtractLast(concat), EqExtractResult(concat, nullptr));
+  CordRep::Unref(rconcat);
+
+  CordRep::Ref(flat3);
+  EXPECT_THAT(ExtractLast(concat), EqExtractResult(concat, nullptr));
+  CordRep::Unref(flat3);
+
+  CordRep::Unref(concat);
+}
+
+TEST(CordRepConcatTest, ExtractAppendBufferNotFlat) {
+  CordRepFlat* flat1 = MakeFlat("hijkl");
+  CordRepFlat* flat2 = MakeFlat("abc");
+  CordRepFlat* flat3 = MakeFlat("defg");
+  auto substr = MakeSubstring(1, 2, flat3);
+  CordRepConcat* rconcat = MakeConcat(flat2, substr, 0);
+  CordRepConcat* concat = MakeConcat(flat1, rconcat, 1);
+  EXPECT_THAT(ExtractLast(concat), EqExtractResult(concat, nullptr));
+  CordRep::Unref(concat);
+}
+
+TEST(CordRepConcatTest, ExtractAppendBufferNoCapacity) {
+  CordRepFlat* flat1 = MakeFlat("hijkl");
+  CordRepFlat* flat2 = MakeFlat("abc");
+  CordRepFlat* flat3 = MakeFlat("defg");
+  size_t avail = flat3->Capacity() - flat3->length;
+  CordRepConcat* rconcat = MakeConcat(flat2, flat3, 0);
+  CordRepConcat* concat = MakeConcat(flat1, rconcat, 1);
+
+  // Should fail if 1 byte over, success if exactly matching
+  EXPECT_THAT(ExtractLast(concat, avail + 1), EqExtractResult(concat, nullptr));
+  EXPECT_THAT(ExtractLast(concat, avail), EqExtractResult(concat, flat3));
+
+  CordRep::Unref(concat);
+  CordRep::Unref(flat3);
+}
+
+}  // namespace
+}  // namespace cord_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/absl/strings/internal/cord_rep_crc.cc b/absl/strings/internal/cord_rep_crc.cc
new file mode 100644
index 0000000..ee14035
--- /dev/null
+++ b/absl/strings/internal/cord_rep_crc.cc
@@ -0,0 +1,54 @@
+// Copyright 2021 The Abseil Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/cord_rep_crc.h"
+
+#include <cassert>
+#include <cstdint>
+
+#include "absl/base/config.h"
+#include "absl/strings/internal/cord_internal.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+
+CordRepCrc* CordRepCrc::New(CordRep* child, uint32_t crc) {
+  assert(child != nullptr);
+  if (child->IsCrc()) {
+    if (child->refcount.IsOne()) {
+      child->crc()->crc = crc;
+      return child->crc();
+    }
+    CordRep* old = child;
+    child = old->crc()->child;
+    CordRep::Ref(child);
+    CordRep::Unref(old);
+  }
+  auto* new_cordrep = new CordRepCrc;
+  new_cordrep->length = child->length;
+  new_cordrep->tag = cord_internal::CRC;
+  new_cordrep->child = child;
+  new_cordrep->crc = crc;
+  return new_cordrep;
+}
+
+void CordRepCrc::Destroy(CordRepCrc* node) {
+  CordRep::Unref(node->child);
+  delete node;
+}
+
+}  // namespace cord_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/absl/strings/internal/cord_rep_crc.h b/absl/strings/internal/cord_rep_crc.h
new file mode 100644
index 0000000..5294b0d
--- /dev/null
+++ b/absl/strings/internal/cord_rep_crc.h
@@ -0,0 +1,102 @@
+// Copyright 2021 The Abseil Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_STRINGS_INTERNAL_CORD_REP_CRC_H_
+#define ABSL_STRINGS_INTERNAL_CORD_REP_CRC_H_
+
+#include <cassert>
+#include <cstdint>
+
+#include "absl/base/config.h"
+#include "absl/base/optimization.h"
+#include "absl/strings/internal/cord_internal.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+
+// CordRepCrc is a CordRep node intended only to appear at the top level of a
+// cord tree.  It associates an "expected CRC" with the contained data, to allow
+// for easy passage of checksum data in Cord data flows.
+//
+// From Cord's perspective, the crc value has no semantics; any validation of
+// the contained checksum is the user's responsibility.
+struct CordRepCrc : public CordRep {
+  CordRep* child;
+  uint32_t crc;
+
+  // Consumes `child` and returns a CordRepCrc prefixed tree containing `child`.
+  // If the specified `child` is itself a CordRepCrc node, then this method
+  // either replaces the existing node, or directly updates the crc value in it
+  // depending on the node being shared or not, i.e.: refcount.IsOne().
+  // `child` must not be null. Never returns null.
+  static CordRepCrc* New(CordRep* child, uint32_t crc);
+
+  // Destroys (deletes) the provided node. `node` must not be null.
+  static void Destroy(CordRepCrc* node);
+};
+
+// Consumes `rep` and returns a CordRep* with any outer CordRepCrc wrapper
+// removed.  This is usually a no-op (returning `rep`), but this will remove and
+// unref an outer CordRepCrc node.
+inline CordRep* RemoveCrcNode(CordRep* rep) {
+  assert(rep != nullptr);
+  if (ABSL_PREDICT_FALSE(rep->IsCrc())) {
+    CordRep* child = rep->crc()->child;
+    if (rep->refcount.IsOne()) {
+      delete rep->crc();
+    } else {
+      CordRep::Ref(child);
+      CordRep::Unref(rep);
+    }
+    return child;
+  }
+  return rep;
+}
+
+// Returns `rep` if it is not a CordRepCrc node, or its child if it is.
+// Does not consume or create a reference on `rep` or the returned value.
+inline CordRep* SkipCrcNode(CordRep* rep) {
+  assert(rep != nullptr);
+  if (ABSL_PREDICT_FALSE(rep->IsCrc())) {
+    return rep->crc()->child;
+  } else {
+    return rep;
+  }
+}
+
+inline const CordRep* SkipCrcNode(const CordRep* rep) {
+  assert(rep != nullptr);
+  if (ABSL_PREDICT_FALSE(rep->IsCrc())) {
+    return rep->crc()->child;
+  } else {
+    return rep;
+  }
+}
+
+inline CordRepCrc* CordRep::crc() {
+  assert(IsCrc());
+  return static_cast<CordRepCrc*>(this);
+}
+
+inline const CordRepCrc* CordRep::crc() const {
+  assert(IsCrc());
+  return static_cast<const CordRepCrc*>(this);
+}
+
+}  // namespace cord_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_STRINGS_INTERNAL_CORD_REP_CRC_H_
diff --git a/absl/strings/internal/cord_rep_crc_test.cc b/absl/strings/internal/cord_rep_crc_test.cc
new file mode 100644
index 0000000..80f5348
--- /dev/null
+++ b/absl/strings/internal/cord_rep_crc_test.cc
@@ -0,0 +1,115 @@
+// Copyright 2021 The Abseil Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/internal/cord_rep_crc.h"
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "absl/base/config.h"
+#include "absl/strings/internal/cord_internal.h"
+#include "absl/strings/internal/cord_rep_test_util.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+namespace {
+
+using ::absl::cordrep_testing::MakeFlat;
+using ::testing::Eq;
+using ::testing::Ne;
+
+#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
+
+TEST(CordRepCrc, NewWithNullPtr) {
+  EXPECT_DEATH(CordRepCrc::New(nullptr, 0), "");
+}
+
+TEST(CordRepCrc, RemoveCrcWithNullptr) {
+  EXPECT_DEATH(RemoveCrcNode(nullptr), "");
+}
+
+#endif  // !NDEBUG && GTEST_HAS_DEATH_TEST
+
+TEST(CordRepCrc, NewDestroy) {
+  CordRep* rep = cordrep_testing::MakeFlat("Hello world");
+  CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+  EXPECT_TRUE(crc->refcount.IsOne());
+  EXPECT_THAT(crc->child, Eq(rep));
+  EXPECT_THAT(crc->crc, Eq(12345));
+  EXPECT_TRUE(rep->refcount.IsOne());
+  CordRepCrc::Destroy(crc);
+}
+
+TEST(CordRepCrc, NewExistingCrcNotShared) {
+  CordRep* rep = cordrep_testing::MakeFlat("Hello world");
+  CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+  CordRepCrc* new_crc = CordRepCrc::New(crc, 54321);
+  EXPECT_THAT(new_crc, Eq(crc));
+  EXPECT_TRUE(new_crc->refcount.IsOne());
+  EXPECT_THAT(new_crc->child, Eq(rep));
+  EXPECT_THAT(new_crc->crc, Eq(54321));
+  EXPECT_TRUE(rep->refcount.IsOne());
+  CordRepCrc::Destroy(new_crc);
+}
+
+TEST(CordRepCrc, NewExistingCrcShared) {
+  CordRep* rep = cordrep_testing::MakeFlat("Hello world");
+  CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+  CordRep::Ref(crc);
+  CordRepCrc* new_crc = CordRepCrc::New(crc, 54321);
+
+  EXPECT_THAT(new_crc, Ne(crc));
+  EXPECT_TRUE(new_crc->refcount.IsOne());
+  EXPECT_TRUE(crc->refcount.IsOne());
+  EXPECT_FALSE(rep->refcount.IsOne());
+  EXPECT_THAT(crc->child, Eq(rep));
+  EXPECT_THAT(new_crc->child, Eq(rep));
+  EXPECT_THAT(crc->crc, Eq(12345));
+  EXPECT_THAT(new_crc->crc, Eq(54321));
+
+  CordRep::Unref(crc);
+  CordRep::Unref(new_crc);
+}
+
+TEST(CordRepCrc, RemoveCrcNotCrc) {
+  CordRep* rep = cordrep_testing::MakeFlat("Hello world");
+  CordRep* nocrc = RemoveCrcNode(rep);
+  EXPECT_THAT(nocrc, Eq(rep));
+  CordRep::Unref(nocrc);
+}
+
+TEST(CordRepCrc, RemoveCrcNotShared) {
+  CordRep* rep = cordrep_testing::MakeFlat("Hello world");
+  CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+  CordRep* nocrc = RemoveCrcNode(crc);
+  EXPECT_THAT(nocrc, Eq(rep));
+  EXPECT_TRUE(rep->refcount.IsOne());
+  CordRep::Unref(nocrc);
+}
+
+TEST(CordRepCrc, RemoveCrcShared) {
+  CordRep* rep = cordrep_testing::MakeFlat("Hello world");
+  CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+  CordRep::Ref(crc);
+  CordRep* nocrc = RemoveCrcNode(crc);
+  EXPECT_THAT(nocrc, Eq(rep));
+  EXPECT_FALSE(rep->refcount.IsOne());
+  CordRep::Unref(nocrc);
+  CordRep::Unref(crc);
+}
+
+}  // namespace
+}  // namespace cord_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
diff --git a/absl/strings/internal/cord_rep_flat.h b/absl/strings/internal/cord_rep_flat.h
index 4d0f988..62cf584 100644
--- a/absl/strings/internal/cord_rep_flat.h
+++ b/absl/strings/internal/cord_rep_flat.h
@@ -44,11 +44,11 @@
 static constexpr size_t kMinFlatLength = kMinFlatSize - kFlatOverhead;
 
 constexpr uint8_t AllocatedSizeToTagUnchecked(size_t size) {
-  return static_cast<uint8_t>((size <= 1024) ? size / 8 + 1
-                                             : 129 + size / 32 - 1024 / 32);
+  return static_cast<uint8_t>((size <= 1024) ? size / 8 + 2
+                                             : 130 + size / 32 - 1024 / 32);
 }
 
-static_assert(kMinFlatSize / 8 + 1 >= FLAT, "");
+static_assert(kMinFlatSize / 8 + 2 >= FLAT, "");
 static_assert(AllocatedSizeToTagUnchecked(kMaxFlatSize) <= MAX_FLAT_TAG, "");
 
 // Helper functions for rounded div, and rounding to exact sizes.
@@ -73,7 +73,7 @@
 
 // Converts the provided tag to the corresponding allocated size
 constexpr size_t TagToAllocatedSize(uint8_t tag) {
-  return (tag <= 129) ? ((tag - 1) * 8) : (1024 + (tag - 129) * 32);
+  return (tag <= 130) ? ((tag - 2) * 8) : (1024 + (tag - 130) * 32);
 }
 
 // Converts the provided tag to the corresponding available data length
@@ -82,7 +82,7 @@
 }
 
 // Enforce that kMaxFlatSize maps to a well-known exact tag value.
-static_assert(TagToAllocatedSize(225) == kMaxFlatSize, "Bad tag logic");
+static_assert(TagToAllocatedSize(226) == kMaxFlatSize, "Bad tag logic");
 
 struct CordRepFlat : public CordRep {
   // Creates a new flat node.
diff --git a/absl/strings/internal/cord_rep_ring.cc b/absl/strings/internal/cord_rep_ring.cc
index 07c77eb..db1f63f 100644
--- a/absl/strings/internal/cord_rep_ring.cc
+++ b/absl/strings/internal/cord_rep_ring.cc
@@ -277,7 +277,7 @@
   // Get current number of entries, and check for max capacity.
   size_t entries = rep->entries();
 
-  if (!rep->refcount.IsMutable()) {
+  if (!rep->refcount.IsOne()) {
     return Copy(rep, rep->head(), rep->tail(), extra);
   } else if (entries + extra > rep->capacity()) {
     const size_t min_grow = rep->capacity() + rep->capacity() / 2;
@@ -292,10 +292,10 @@
 }
 
 Span<char> CordRepRing::GetAppendBuffer(size_t size) {
-  assert(refcount.IsMutable());
+  assert(refcount.IsOne());
   index_type back = retreat(tail_);
   CordRep* child = entry_child(back);
-  if (child->tag >= FLAT && child->refcount.IsMutable()) {
+  if (child->tag >= FLAT && child->refcount.IsOne()) {
     size_t capacity = child->flat()->Capacity();
     pos_type end_pos = entry_end_pos(back);
     size_t data_offset = entry_data_offset(back);
@@ -312,10 +312,10 @@
 }
 
 Span<char> CordRepRing::GetPrependBuffer(size_t size) {
-  assert(refcount.IsMutable());
+  assert(refcount.IsOne());
   CordRep* child = entry_child(head_);
   size_t data_offset = entry_data_offset(head_);
-  if (data_offset && child->refcount.IsMutable() && child->tag >= FLAT) {
+  if (data_offset && child->refcount.IsOne() && child->tag >= FLAT) {
     size_t n = (std::min)(data_offset, size);
     this->length += n;
     begin_pos_ -= n;
@@ -504,7 +504,7 @@
 
 CordRepRing* CordRepRing::Append(CordRepRing* rep, absl::string_view data,
                                  size_t extra) {
-  if (rep->refcount.IsMutable()) {
+  if (rep->refcount.IsOne()) {
     Span<char> avail = rep->GetAppendBuffer(data.length());
     if (!avail.empty()) {
       memcpy(avail.data(), data.data(), avail.length());
@@ -538,7 +538,7 @@
 
 CordRepRing* CordRepRing::Prepend(CordRepRing* rep, absl::string_view data,
                                   size_t extra) {
-  if (rep->refcount.IsMutable()) {
+  if (rep->refcount.IsOne()) {
     Span<char> avail = rep->GetPrependBuffer(data.length());
     if (!avail.empty()) {
       const char* tail = data.data() + data.length() - avail.length();
@@ -678,7 +678,7 @@
   Position tail = rep->FindTail(head.index, offset + len);
   const size_t new_entries = rep->entries(head.index, tail.index);
 
-  if (rep->refcount.IsMutable() && extra <= (rep->capacity() - new_entries)) {
+  if (rep->refcount.IsOne() && extra <= (rep->capacity() - new_entries)) {
     // We adopt a privately owned rep and no extra entries needed.
     if (head.index != rep->head_) UnrefEntries(rep, rep->head_, head.index);
     if (tail.index != rep->tail_) UnrefEntries(rep, tail.index, rep->tail_);
@@ -715,7 +715,7 @@
   }
 
   Position head = rep->Find(len);
-  if (rep->refcount.IsMutable()) {
+  if (rep->refcount.IsOne()) {
     if (head.index != rep->head_) UnrefEntries(rep, rep->head_, head.index);
     rep->head_ = head.index;
   } else {
@@ -745,7 +745,7 @@
   }
 
   Position tail = rep->FindTail(rep->length - len);
-  if (rep->refcount.IsMutable()) {
+  if (rep->refcount.IsOne()) {
     // We adopt a privately owned rep, scrub.
     if (tail.index != rep->tail_) UnrefEntries(rep, tail.index, rep->tail_);
     rep->tail_ = tail.index;
diff --git a/absl/strings/internal/cordz_info.cc b/absl/strings/internal/cordz_info.cc
index 5c18bbc..4d52a80 100644
--- a/absl/strings/internal/cordz_info.cc
+++ b/absl/strings/internal/cordz_info.cc
@@ -20,6 +20,7 @@
 #include "absl/debugging/stacktrace.h"
 #include "absl/strings/internal/cord_internal.h"
 #include "absl/strings/internal/cord_rep_btree.h"
+#include "absl/strings/internal/cord_rep_crc.h"
 #include "absl/strings/internal/cord_rep_ring.h"
 #include "absl/strings/internal/cordz_handle.h"
 #include "absl/strings/internal/cordz_statistics.h"
@@ -81,6 +82,14 @@
     size_t refcount = rep->refcount.Get();
     RepRef repref{rep, (refcount > 1) ? refcount - 1 : 1};
 
+    // Process the top level CRC node, if present.
+    if (repref.rep->tag == CRC) {
+      statistics_.node_count++;
+      statistics_.node_counts.crc++;
+      memory_usage_.Add(sizeof(CordRepCrc), repref.refcount);
+      repref = repref.Child(repref.rep->crc()->child);
+    }
+
     // Process all top level linear nodes (substrings and flats).
     repref = CountLinearReps(repref, memory_usage_);
 
diff --git a/absl/strings/internal/cordz_info_statistics_test.cc b/absl/strings/internal/cordz_info_statistics_test.cc
index 7430d28..5277c3c 100644
--- a/absl/strings/internal/cordz_info_statistics_test.cc
+++ b/absl/strings/internal/cordz_info_statistics_test.cc
@@ -22,6 +22,7 @@
 #include "absl/strings/cord.h"
 #include "absl/strings/internal/cord_internal.h"
 #include "absl/strings/internal/cord_rep_btree.h"
+#include "absl/strings/internal/cord_rep_crc.h"
 #include "absl/strings/internal/cord_rep_flat.h"
 #include "absl/strings/internal/cord_rep_ring.h"
 #include "absl/strings/internal/cordz_info.h"
@@ -535,6 +536,27 @@
   EXPECT_THAT(SampleCord(tree), EqStatistics(expected));
 }
 
+TEST(CordzInfoStatisticsTest, Crc) {
+  RefHelper ref;
+  auto* left = Flat(1000);
+  auto* right = Flat(1000);
+  auto* concat = Concat(left, right);
+  auto* crc = ref.NeedsUnref(CordRepCrc::New(concat, 12345));
+
+  CordzStatistics expected;
+  expected.size = concat->length;
+  expected.estimated_memory_usage =
+      SizeOf(crc) + SizeOf(concat) + SizeOf(left) + SizeOf(right);
+  expected.estimated_fair_share_memory_usage = expected.estimated_memory_usage;
+  expected.node_count = 4;
+  expected.node_counts.flat = 2;
+  expected.node_counts.flat_1k = 2;
+  expected.node_counts.concat = 1;
+  expected.node_counts.crc = 1;
+
+  EXPECT_THAT(SampleCord(crc), EqStatistics(expected));
+}
+
 TEST(CordzInfoStatisticsTest, ThreadSafety) {
   Notification stop;
   static constexpr int kNumThreads = 8;
diff --git a/absl/strings/internal/cordz_statistics.h b/absl/strings/internal/cordz_statistics.h
index da4c7db..5707190 100644
--- a/absl/strings/internal/cordz_statistics.h
+++ b/absl/strings/internal/cordz_statistics.h
@@ -41,6 +41,7 @@
     size_t concat = 0;     // #concat reps
     size_t ring = 0;       // #ring buffer reps
     size_t btree = 0;      // #btree reps
+    size_t crc = 0;        // #crc reps
   };
 
   // The size of the cord in bytes. This matches the result of Cord::size().
diff --git a/absl/strings/internal/cordz_update_tracker.h b/absl/strings/internal/cordz_update_tracker.h
index 1f76448..7a41c18 100644
--- a/absl/strings/internal/cordz_update_tracker.h
+++ b/absl/strings/internal/cordz_update_tracker.h
@@ -60,6 +60,7 @@
     kPrependString,
     kRemovePrefix,
     kRemoveSuffix,
+    kSetExpectedChecksum,
     kSubCord,
 
     // kNumMethods defines the number of entries: must be the last entry.
diff --git a/absl/strings/internal/cordz_update_tracker_test.cc b/absl/strings/internal/cordz_update_tracker_test.cc
index 2348a17..8eda529 100644
--- a/absl/strings/internal/cordz_update_tracker_test.cc
+++ b/absl/strings/internal/cordz_update_tracker_test.cc
@@ -58,6 +58,7 @@
                  Method::kPrependString,
                  Method::kRemovePrefix,
                  Method::kRemoveSuffix,
+                 Method::kSetExpectedChecksum,
                  Method::kSubCord};
 }
 
diff --git a/symbols_arm64_dbg.def b/symbols_arm64_dbg.def
index 1e4760f..9b9d78f 100644
--- a/symbols_arm64_dbg.def
+++ b/symbols_arm64_dbg.def
@@ -5,6 +5,7 @@
     ??$?0$$CBVFormatArgImpl@str_format_internal@absl@@$$CBV012@@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QEAA@V?$initializer_list@VFormatArgImpl@str_format_internal@absl@@@std@@@Z
     ??$?0$$T@?$Storage@PEAH$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAPEAUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
+    ??$?0$$T@?$Storage@PEAPEAUCordRepConcat@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAPEBUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAUPayload@status_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAUSubRange@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
@@ -49,6 +50,8 @@
     ??$?0$00X@?$unique_ptr@VTimeZoneInfo@cctz@time_internal@absl@@U?$default_delete@VTimeZoneInfo@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@PEAVTimeZoneInfo@cctz@time_internal@absl@@@Z
     ??$?0$00X@?$unique_ptr@VZoneInfoSource@cctz@time_internal@absl@@U?$default_delete@VZoneInfoSource@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@$$T@Z
     ??$?0$00X@?$unique_ptr@VZoneInfoSource@cctz@time_internal@absl@@U?$default_delete@VZoneInfoSource@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@PEAVZoneInfoSource@cctz@time_internal@absl@@@Z
+    ??$?0AEAI$0A@@?$optional@I@absl@@QEAA@AEAI@Z
+    ??$?0AEAI@?$optional_data_dtor_base@I$00@optional_internal@absl@@IEAA@Uin_place_t@2@AEAI@Z
     ??$?0AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@V?$__allocator_destructor@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@@?$__compressed_pair@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@V?$__allocator_destructor@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@@__1@std@@QEAA@AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@$$QEAV?$__allocator_destructor@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@12@@Z
     ??$?0AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@X@?$__compressed_pair_elem@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@$0A@$0A@@__1@std@@QEAA@AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@Z
     ??$?0AEAPEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@12@@?$__compressed_pair@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@@__1@std@@QEAA@AEAPEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@12@$$QEAV?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@12@@Z
@@ -73,6 +76,9 @@
     ??$?0AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
     ??$?0AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@X@?$__compressed_pair_elem@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$00$0A@@__1@std@@QEAA@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@12@@Z
+    ??$?0AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$T$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QEAA@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
+    ??$?0AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
+    ??$?0AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??$?0AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@X@?$__compressed_pair_elem@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@$00$0A@@__1@std@@QEAA@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@12@@Z
     ??$?0AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$T$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@QEAA@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
     ??$?0AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
@@ -173,6 +179,9 @@
     ??$?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEAA@$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
     ??$?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
+    ??$?0V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
+    ??$?0V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEAA@$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEAH@Z
+    ??$?0V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEAH@Z
     ??$?0V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEAA@$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
     ??$?0V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
@@ -269,16 +278,12 @@
     ??$ConstructElements@V?$allocator@H@__1@std@@V?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@H@__1@std@@PEAHAEAV?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@1@AEAV?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@01@_K@Z
     ??$ConstructElements@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@01@_K@Z
+    ??$ConstructElements@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@01@_K@Z
     ??$ConstructElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@USubRange@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@USubRange@absl@@@__1@std@@V?$move_iterator@PEAUSubRange@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@1@AEAV?$IteratorValueAdapter@V?$allocator@USubRange@absl@@@__1@std@@V?$move_iterator@PEAUSubRange@absl@@@23@@01@_K@Z
     ??$Convert@VFormatArgImpl@str_format_internal@absl@@@FormatArgImplFriend@str_format_internal@absl@@SA_NVFormatArgImpl@12@VFormatConversionSpecImpl@12@PEAVFormatSinkImpl@12@@Z
-    ??$DestroyElements@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@H@__1@std@@PEAH_K@Z
-    ??$DestroyElements@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@1@_K@Z
-    ??$DestroyElements@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@1@_K@Z
-    ??$DestroyElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@1@_K@Z
-    ??$DestroyElements@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@1@_K@Z
     ??$Dispatch@C@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PEAX@Z
     ??$Dispatch@D@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PEAX@Z
     ??$Dispatch@E@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PEAX@Z
@@ -305,6 +310,7 @@
     ??$EmplaceBack@AEBH@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAHAEBH@Z
     ??$EmplaceBack@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBack@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBack@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBack@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBack@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBack@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
@@ -312,6 +318,7 @@
     ??$EmplaceBackSlow@AEBH@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AEAAAEAHAEBH@Z
     ??$EmplaceBackSlow@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBackSlow@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBackSlow@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBackSlow@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBackSlow@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBackSlow@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
@@ -574,6 +581,10 @@
     ??$construct@PEAUCordRep@cord_internal@absl@@AEBQEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@12@PEAPEAUCordRep@cord_internal@absl@@AEBQEAU456@@Z
     ??$construct@PEAUCordRep@cord_internal@absl@@PEAU123@@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRep@cord_internal@absl@@$$QEAPEAU345@@Z
     ??$construct@PEAUCordRep@cord_internal@absl@@PEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@12@PEAPEAUCordRep@cord_internal@absl@@$$QEAPEAU456@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@AEBQEAU123@@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRepConcat@cord_internal@absl@@AEBQEAU345@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@AEBQEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@12@PEAPEAUCordRepConcat@cord_internal@absl@@AEBQEAU456@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@PEAU123@@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRepConcat@cord_internal@absl@@$$QEAPEAU345@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@PEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@12@PEAPEAUCordRepConcat@cord_internal@absl@@$$QEAPEAU456@@Z
     ??$construct@PEAVCordzHandle@cord_internal@absl@@AEBQEAV123@@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAAXPEAPEAVCordzHandle@cord_internal@absl@@AEBQEAV345@@Z
     ??$construct@PEAVCordzHandle@cord_internal@absl@@AEBQEAV123@X@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@12@PEAPEAVCordzHandle@cord_internal@absl@@AEBQEAV456@@Z
     ??$construct@PEBUCordRep@cord_internal@absl@@AEBQEBU123@@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEBUCordRep@cord_internal@absl@@AEBQEBU345@@Z
@@ -637,6 +648,7 @@
     ??$emplace_back@AEBH@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAAEAHAEBH@Z
     ??$emplace_back@AEBQEAUCordRep@cord_internal@absl@@@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@1@AEBQEAU231@@Z
     ??$emplace_back@AEBQEAUCordRep@cord_internal@absl@@@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@1@AEBQEAU231@@Z
+    ??$emplace_back@AEBQEAUCordRepConcat@cord_internal@absl@@@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@1@AEBQEAU231@@Z
     ??$emplace_back@AEBQEBUCordRep@cord_internal@absl@@@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEBUCordRep@cord_internal@1@AEBQEBU231@@Z
     ??$emplace_back@PEAUCordRep@cord_internal@absl@@@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@1@$$QEAPEAU231@@Z
     ??$emplace_back@UPayload@status_internal@absl@@@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAAEAUPayload@status_internal@1@$$QEAU231@@Z
@@ -658,6 +670,7 @@
     ??$forward@AEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@01@AEAV201@@Z
     ??$forward@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@01@AEAV201@@Z
     ??$forward@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@YAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
+    ??$forward@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@YAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@01@AEAV201@@Z
     ??$forward@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@YAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@AEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@01@AEAV201@@Z
@@ -671,6 +684,7 @@
     ??$forward@AEA_K@absl@@YAAEA_KAEA_K@Z
     ??$forward@AEBQEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@YAAEBQEAPEBVImpl@time_zone@cctz@time_internal@absl@@AEBQEAPEBV23456@@Z
     ??$forward@AEBQEAUCordRep@cord_internal@absl@@@__1@std@@YAAEBQEAUCordRep@cord_internal@absl@@AEBQEAU234@@Z
+    ??$forward@AEBQEAUCordRepConcat@cord_internal@absl@@@__1@std@@YAAEBQEAUCordRepConcat@cord_internal@absl@@AEBQEAU234@@Z
     ??$forward@AEBQEAVCordzHandle@cord_internal@absl@@@__1@std@@YAAEBQEAVCordzHandle@cord_internal@absl@@AEBQEAV234@@Z
     ??$forward@AEBQEBUCordRep@cord_internal@absl@@@__1@std@@YAAEBQEBUCordRep@cord_internal@absl@@AEBQEBU234@@Z
     ??$forward@AEBQEBVCordzHandle@cord_internal@absl@@@__1@std@@YAAEBQEBVCordzHandle@cord_internal@absl@@AEBQEBV234@@Z
@@ -687,6 +701,7 @@
     ??$forward@PEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@YA$$QEAPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@01@AEAPEAPEAU201@@Z
     ??$forward@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@YA$$QEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@AEAPEAPEBV23456@@Z
     ??$forward@PEAUCordRep@cord_internal@absl@@@__1@std@@YA$$QEAPEAUCordRep@cord_internal@absl@@AEAPEAU234@@Z
+    ??$forward@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@YA$$QEAPEAUCordRepConcat@cord_internal@absl@@AEAPEAU234@@Z
     ??$forward@PEAV?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@@__1@std@@YA$$QEAPEAV?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@AEAPEAV23@@Z
     ??$forward@PEAVCondVar@absl@@@__1@std@@YA$$QEAPEAVCondVar@absl@@AEAPEAV23@@Z
     ??$forward@PEAVMutex@absl@@@__1@std@@YA$$QEAPEAVMutex@absl@@AEAPEAV23@@Z
@@ -705,6 +720,7 @@
     ??$forward@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@YA$$QEAV?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@01@AEAV201@@Z
     ??$forward@V?$allocator@H@__1@std@@@absl@@YA$$QEAV?$allocator@H@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
+    ??$forward@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@USubRange@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@USubRange@absl@@@__1@std@@AEAV123@@Z
@@ -717,6 +733,9 @@
     ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAPEAPEAUCordRep@cord_internal@2@XZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEA_KXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGBAAEB_KXZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QEGAAAEAPEAPEAUCordRepConcat@cord_internal@2@XZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEA_KXZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGBAAEB_KXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAPEAPEBUCordRep@cord_internal@2@XZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEA_KXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGBAAEB_KXZ
@@ -732,6 +751,8 @@
     ??$get@$0A@@?$CompressedTuple@V?$allocator@H@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@H@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
+    ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -750,6 +771,7 @@
     ??$max_size@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@12@@Z
     ??$max_size@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAUCordRep@cord_internal@absl@@@12@@Z
+    ??$max_size@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAVCordzHandle@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEBUCordRep@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEBVCordzHandle@cord_internal@absl@@@12@@Z
@@ -783,6 +805,7 @@
     ??$move@AEAUViableSubstitution@strings_internal@absl@@@__1@std@@YA$$QEAUViableSubstitution@strings_internal@absl@@AEAU234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
+    ??$move@AEAV?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
@@ -815,6 +838,7 @@
     ??$upper_bound@PEBUTransition@cctz@time_internal@absl@@U1234@UByUnixTime@1234@@__1@std@@YAPEBUTransition@cctz@time_internal@absl@@PEBU2345@0AEBU2345@UByUnixTime@2345@@Z
     ??0?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@H@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@USubRange@absl@@@__1@std@@@Z
@@ -831,6 +855,7 @@
     ??0?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@_KAEBQEAUCordRep@cord_internal@1@AEBV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAA@AEBV01@@Z
     ??0?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAA@AEBV01@AEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
@@ -838,6 +863,7 @@
     ??0?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAH@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@QEAA@AEBQEBUPayload@status_internal@2@@Z
     ??0?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@@Z
@@ -861,6 +887,7 @@
     ??0?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??0?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEBV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
+    ??0?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??0?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??0?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
     ??0?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
@@ -934,6 +961,7 @@
     ??0?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAA@XZ
+    ??0?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEAA@XZ
@@ -980,17 +1008,22 @@
     ??0?$deque@PEBVImpl@time_zone@cctz@time_internal@absl@@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@XZ
     ??0?$move_iterator@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAA@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@Z
     ??0?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@QEAA@PEAPEAUCordRep@cord_internal@absl@@@Z
+    ??0?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAA@PEAPEAUCordRepConcat@cord_internal@absl@@@Z
     ??0?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@QEAA@PEAPEBUCordRep@cord_internal@absl@@@Z
     ??0?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@QEAA@PEAUPayload@status_internal@absl@@@Z
     ??0?$move_iterator@PEAUSubRange@absl@@@__1@std@@QEAA@PEAUSubRange@absl@@@Z
     ??0?$move_iterator@PEAUTransition@cctz@time_internal@absl@@@__1@std@@QEAA@PEAUTransition@cctz@time_internal@absl@@@Z
     ??0?$move_iterator@PEAUTransitionType@cctz@time_internal@absl@@@__1@std@@QEAA@PEAUTransitionType@cctz@time_internal@absl@@@Z
+    ??0?$optional@I@absl@@QEAA@Unullopt_t@1@@Z
     ??0?$optional@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@absl@@QEAA@XZ
     ??0?$optional@VCord@absl@@@absl@@QEAA@Unullopt_t@1@@Z
+    ??0?$optional_data@I$00@optional_internal@absl@@QEAA@XZ
     ??0?$optional_data@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@$0A@@optional_internal@absl@@IEAA@XZ
     ??0?$optional_data@VCord@absl@@$0A@@optional_internal@absl@@IEAA@XZ
+    ??0?$optional_data_base@I@optional_internal@absl@@QEAA@XZ
     ??0?$optional_data_base@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@optional_internal@absl@@QEAA@XZ
     ??0?$optional_data_base@VCord@absl@@@optional_internal@absl@@QEAA@XZ
+    ??0?$optional_data_dtor_base@I$00@optional_internal@absl@@IEAA@XZ
     ??0?$optional_data_dtor_base@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@$0A@@optional_internal@absl@@IEAA@XZ
     ??0?$optional_data_dtor_base@VCord@absl@@$0A@@optional_internal@absl@@IEAA@XZ
     ??0?$probe_seq@$07@container_internal@absl@@QEAA@_K0@Z
@@ -1043,6 +1076,7 @@
     ??0CordRepBtreeNavigator@cord_internal@absl@@QEAA@XZ
     ??0CordRepBtreeReader@cord_internal@absl@@QEAA@XZ
     ??0CordRepConcat@cord_internal@absl@@QEAA@XZ
+    ??0CordRepCrc@cord_internal@absl@@QEAA@XZ
     ??0CordRepExternal@cord_internal@absl@@QEAA@XZ
     ??0CordRepFlat@cord_internal@absl@@QEAA@XZ
     ??0CordRepRing@cord_internal@absl@@AEAA@I@Z
@@ -1154,6 +1188,7 @@
     ??0uint128@absl@@QEAA@_K@Z
     ??1?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
+    ??1?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
@@ -1161,6 +1196,7 @@
     ??1?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
+    ??1?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAA@XZ
@@ -1168,6 +1204,7 @@
     ??1?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
+    ??1?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
@@ -1366,6 +1403,7 @@
     ??D?$__wrap_iter@PEBUConversionItem@ParsedFormatBase@str_format_internal@absl@@@__1@std@@QEBAAEBUConversionItem@ParsedFormatBase@str_format_internal@absl@@XZ
     ??D?$move_iterator@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEBA$$QEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@XZ
     ??D?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@QEBA$$QEAPEAUCordRep@cord_internal@absl@@XZ
+    ??D?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEBA$$QEAPEAUCordRepConcat@cord_internal@absl@@XZ
     ??D?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@QEBA$$QEAPEBUCordRep@cord_internal@absl@@XZ
     ??D?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@QEBA$$QEAUPayload@status_internal@absl@@XZ
     ??D?$move_iterator@PEAUSubRange@absl@@@__1@std@@QEBA$$QEAUSubRange@absl@@XZ
@@ -1383,6 +1421,7 @@
     ??E?$__wrap_iter@PEBUConversionItem@ParsedFormatBase@str_format_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@QEAAAEAV012@XZ
+    ??E?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAUSubRange@absl@@@__1@std@@QEAAAEAV012@XZ
@@ -1431,6 +1470,7 @@
     ??R<lambda_1>@?0???$AddRing@$0A@@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@0_K1@Z@QEBA?A?<auto>@@I@Z
     ??R<lambda_1>@?0???$Fill@$00@CordRepRing@cord_internal@absl@@AEAAXPEBV123@II@Z@QEBA?A?<auto>@@I@Z
     ??R<lambda_1>@?0???$Fill@$0A@@CordRepRing@cord_internal@absl@@AEAAXPEBV123@II@Z@QEBA?A?<auto>@@I@Z
+    ??R<lambda_1>@?0???$Initialize@V?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXV?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$FixedArray@PEAUCordRep@cord_internal@absl@@$0?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAAEAUPayload@status_internal@2@_K@Z@QEBA?A?<auto>@@XZ
@@ -1446,9 +1486,17 @@
     ??R<lambda_1>@?0??CheckLengthInternal@string_view@absl@@CA_K_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??CompareSlowPath@Cord@absl@@AEBAHAEBV23@_K1@Z@QEBA?A?<auto>@@PEAVChunkIterator@23@PEAVstring_view@3@@Z
     ??R<lambda_1>@?0??CompareSlowPath@Cord@absl@@AEBAHVstring_view@3@_K1@Z@QEBA?A?<auto>@@PEAVChunkIterator@23@PEAV43@@Z
+    ??R<lambda_1>@?0??InitFrom@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXAEBV234@@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAAEAHXZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??back@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEBUCordRep@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAAAEAUSubRange@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??erase@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@3@PEBU453@@Z@QEBA?A?<auto>@@XZ
@@ -1463,6 +1511,7 @@
     ??R<lambda_1>@?0??set_inline_size@InlineData@cord_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_2>@?0???$AddRing@$00@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@0_K1@Z@QEBA?A?<auto>@@I@Z
     ??R<lambda_2>@?0???$AddRing@$0A@@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@0_K1@Z@QEBA?A?<auto>@@I@Z
+    ??R<lambda_2>@?0???$Initialize@V?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXV?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_2>@?0??erase@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@3@PEBU453@@Z@QEBA?A?<auto>@@XZ
     ??R?$FunctionRef@$$A6AXPEAUCordRep@cord_internal@absl@@_K1@Z@absl@@QEBAXPEAUCordRep@cord_internal@1@_K1@Z
     ??R?$FunctionRef@$$A6AXV?$Span@I@absl@@@Z@absl@@QEBAXV?$Span@I@1@@Z
@@ -1525,6 +1574,7 @@
     ?AddSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
+    ?AddSize@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
@@ -1548,11 +1598,13 @@
     ?AllocWithArena@LowLevelAlloc@base_internal@absl@@SAPEAX_KPEAUArena@123@@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAPEAH_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@_K@Z
+    ?Allocate@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@3@_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEBUCordRep@cord_internal@3@_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUSubRange@3@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@H@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@H@__1@std@@@23@AEAV?$allocator@H@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@Z
+    ?Allocate@?$MallocAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@AEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@AEAV?$allocator@USubRange@absl@@@__1@std@@_K@Z
@@ -1654,6 +1706,7 @@
     ?ConstructNext@?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@H@__1@std@@PEAH@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@@Z
+    ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@@Z
@@ -1699,12 +1752,14 @@
     ?DeadlineExceededError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@H@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@H@__1@std@@PEAH_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@_K@Z
+    ?Deallocate@?$MallocAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@3@_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@3@_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@3@_K@Z
     ?DeallocateIfAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
+    ?DeallocateIfAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
@@ -1727,10 +1782,17 @@
     ?Description@TimeZoneLibC@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Destroy@CordRep@cord_internal@absl@@SAXPEAU123@@Z
     ?Destroy@CordRepBtree@cord_internal@absl@@SAXPEAV123@@Z
+    ?Destroy@CordRepCrc@cord_internal@absl@@SAXPEAU123@@Z
     ?Destroy@CordRepRing@cord_internal@absl@@CAXPEAV123@@Z
     ?Destroy@PerThreadSem@synchronization_internal@absl@@CAXPEAUThreadIdentity@base_internal@3@@Z
     ?DestroyContents@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?DestroyCordSlow@Cord@absl@@AEAAXXZ
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@H@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@H@__1@std@@PEAH_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@USubRange@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@3@_K@Z
     ?DestroyLeaf@CordRepBtree@cord_internal@absl@@CAXPEAV123@_K1@Z
     ?DestroyNonLeaf@CordRepBtree@cord_internal@absl@@CAXPEAV123@_K1@Z
     ?DestroyTree@CordRepBtree@cord_internal@absl@@CAXPEAV123@_K1@Z
@@ -1739,6 +1801,7 @@
     ?DiagnosticsHandleIsSafeToInspect@CordzHandle@cord_internal@absl@@QEBA_NPEBV123@@Z
     ?DidAllocate@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
+    ?DidAllocate@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
@@ -1806,7 +1869,10 @@
     ?ErasePayload@Status@absl@@QEAA_NVstring_view@2@@Z
     ?Eval@Condition@absl@@QEBA_NXZ
     ?Excess@str_format_internal@absl@@YA_K_K0@Z
+    ?ExpectedChecksum@Cord@absl@@QEBA?AV?$optional@I@2@XZ
     ?ExtendTransitions@TimeZoneInfo@cctz@time_internal@absl@@AEAA_NXZ
+    ?ExtractAppendBuffer@CordRepBtree@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAV123@_K@Z
+    ?ExtractAppendBuffer@CordRepConcat@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAU123@_K@Z
     ?ExtractFront@CordRepBtree@cord_internal@absl@@CAPEAUCordRep@23@PEAV123@@Z
     ?FDivDuration@absl@@YANVDuration@1@0@Z
     ?FailedPreconditionError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
@@ -1903,24 +1969,28 @@
     ?GetAllocatedCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
+    ?GetAllocatedCapacity@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedData@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAPEAHXZ
     ?GetAllocatedData@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
+    ?GetAllocatedData@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEBUCordRep@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@XZ
     ?GetAllocatedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAPEBUPayload@status_internal@3@XZ
     ?GetAllocatedData@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUSubRange@3@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@H@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?GetAllocator@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@USubRange@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@H@__1@std@@XZ
     ?GetAllocator@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?GetAllocator@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -1931,6 +2001,7 @@
     ?GetCachedTID@base_internal@absl@@YAIXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
+    ?GetCapacity@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
@@ -1941,6 +2012,7 @@
     ?GetCurrentTimeNanos@absl@@YA_JXZ
     ?GetData@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAHXZ
     ?GetData@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAPEAUCordRep@cord_internal@3@XZ
+    ?GetData@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAPEAUCordRepConcat@cord_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAPEBUCordRep@cord_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUPayload@status_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUSubRange@3@XZ
@@ -1951,12 +2023,14 @@
     ?GetInlinedCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
+    ?GetInlinedCapacity@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedData@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAPEAHXZ
     ?GetInlinedData@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
+    ?GetInlinedData@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEBUCordRep@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@XZ
     ?GetInlinedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAPEBUPayload@status_internal@3@XZ
@@ -1964,6 +2038,7 @@
     ?GetIsAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
+    ?GetIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
@@ -1983,6 +2058,7 @@
     ?GetSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
+    ?GetSize@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
@@ -1992,6 +2068,8 @@
     ?GetSizeAndIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
+    ?GetSizeAndIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
+    ?GetSizeAndIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
     ?GetSizeAndIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
@@ -2070,6 +2148,7 @@
     ?IsCancelled@absl@@YA_NAEBVStatus@1@@Z
     ?IsConcat@CordRep@cord_internal@absl@@QEBA_NXZ
     ?IsCooperative@SpinLock@base_internal@absl@@CA_NW4SchedulingMode@23@@Z
+    ?IsCrc@CordRep@cord_internal@absl@@QEBA_NXZ
     ?IsDataEdge@CordRepBtree@cord_internal@absl@@SA_NPEBUCordRep@23@@Z
     ?IsDataLoss@absl@@YA_NAEBVStatus@1@@Z
     ?IsDeadlineExceeded@absl@@YA_NAEBVStatus@1@@Z
@@ -2085,7 +2164,6 @@
     ?IsInternal@absl@@YA_NAEBVStatus@1@@Z
     ?IsInvalidArgument@absl@@YA_NAEBVStatus@1@@Z
     ?IsMovedFrom@Status@absl@@CA_N_K@Z
-    ?IsMutable@RefcountAndFlags@cord_internal@absl@@QEAA_NXZ
     ?IsNotFound@absl@@YA_NAEBVStatus@1@@Z
     ?IsOne@RefcountAndFlags@cord_internal@absl@@QEAA_NXZ
     ?IsOutOfRange@absl@@YA_NAEBVStatus@1@@Z
@@ -2142,6 +2220,7 @@
     ?MakeStorageView@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@H@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
+    ?MakeStorageView@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@USubRange@absl@@@__1@std@@@23@XZ
@@ -2179,6 +2258,7 @@
     ?New@CordRepBtree@cord_internal@absl@@SAPEAV123@H@Z
     ?New@CordRepBtree@cord_internal@absl@@SAPEAV123@PEAUCordRep@23@@Z
     ?New@CordRepBtree@cord_internal@absl@@SAPEAV123@PEAV123@0@Z
+    ?New@CordRepCrc@cord_internal@absl@@SAPEAU123@PEAUCordRep@23@I@Z
     ?New@CordRepFlat@cord_internal@absl@@SAPEAU123@_K@Z
     ?New@CordRepRing@cord_internal@absl@@CAPEAV123@_K0@Z
     ?NewArena@LowLevelAlloc@base_internal@absl@@SAPEAUArena@123@H@Z
@@ -2188,6 +2268,7 @@
     ?NextCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
+    ?NextCapacity@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
@@ -2301,12 +2382,14 @@
     ?RegisterSymbolizer@absl@@YAXP6A_NPEBXPEADH@Z@Z
     ?Release@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@H@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
+    ?Release@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@XZ
     ?Release@ReleasableMutexLock@absl@@QEAAXXZ
     ?Remove@CondVar@absl@@AEAAXPEAUPerThreadSynch@base_internal@2@@Z
     ?RemoveChunkPrefix@ChunkIterator@Cord@absl@@AEAAX_K@Z
+    ?RemoveCrcNode@cord_internal@absl@@YAPEAUCordRep@12@PEAU312@@Z
     ?RemoveEdge@GraphCycles@synchronization_internal@absl@@QEAAXUGraphId@23@0@Z
     ?RemoveExtraAsciiWhitespace@absl@@YAXPEAV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@Z
     ?RemoveNode@GraphCycles@synchronization_internal@absl@@QEAAXPEAX@Z
@@ -2318,6 +2401,7 @@
     ?RepToPointer@Status@absl@@CAPEAUStatusRep@status_internal@2@_K@Z
     ?Reset@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
+    ?Reset@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
@@ -2337,6 +2421,7 @@
     ?SetAllocation@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@H@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
+    ?SetAllocation@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@@Z
@@ -2345,6 +2430,7 @@
     ?SetCordRep@CordzInfo@cord_internal@absl@@QEAAXPEAUCordRep@23@@Z
     ?SetCordRep@CordzUpdateScope@cord_internal@absl@@QEBAXPEAUCordRep@23@@Z
     ?SetCurrentThreadIdentity@base_internal@absl@@YAXPEAUThreadIdentity@12@P6AXPEAX@Z@Z
+    ?SetExpectedChecksum@Cord@absl@@QEAAXI@Z
     ?SetFlags@FormatConversionSpecImplFriend@str_format_internal@absl@@SAXW4Flags@23@PEAVFormatConversionSpecImpl@23@@Z
     ?SetHashtablezEnabled@container_internal@absl@@YAX_N@Z
     ?SetHashtablezMaxSamples@container_internal@absl@@YAXH@Z
@@ -2352,6 +2438,7 @@
     ?SetIsAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
+    ?SetIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
@@ -2383,6 +2470,8 @@
     ?SizeofCordRepExternal@CordTestAccess@strings_internal@absl@@SA_KXZ
     ?SizeofCordRepSubstring@CordTestAccess@strings_internal@absl@@SA_KXZ
     ?Skip@CordRepBtreeNavigator@cord_internal@absl@@QEAA?AUPosition@123@_K@Z
+    ?SkipCrcNode@cord_internal@absl@@YAPEAUCordRep@12@PEAU312@@Z
+    ?SkipCrcNode@cord_internal@absl@@YAPEBUCordRep@12@PEBU312@@Z
     ?SleepFor@absl@@YAXVDuration@1@@Z
     ?SlowLock@SpinLock@base_internal@absl@@AEAAXXZ
     ?SlowUnlock@SpinLock@base_internal@absl@@AEAAXI@Z
@@ -2877,6 +2966,7 @@
     ?allocate@?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAAPEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@_K@Z
     ?allocate@?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEAAPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@_K@Z
     ?allocate@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAAPEAPEAUCordRep@cord_internal@absl@@_K@Z
+    ?allocate@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAPEAPEAUCordRepConcat@cord_internal@absl@@_K@Z
     ?allocate@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAAPEAPEAVCordzHandle@cord_internal@absl@@_K@Z
     ?allocate@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAAPEAPEBUCordRep@cord_internal@absl@@_K@Z
     ?allocate@?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEAAPEAPEBVCordzHandle@cord_internal@absl@@_K@Z
@@ -2892,6 +2982,7 @@
     ?allocate@?$allocator_traits@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@AEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SAPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@AEAV?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAUCordRep@cord_internal@absl@@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@23@_K@Z
+    ?allocate@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAUCordRepConcat@cord_internal@absl@@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAVCordzHandle@cord_internal@absl@@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEBUCordRep@cord_internal@absl@@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEBVCordzHandle@cord_internal@absl@@AEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@23@_K@Z
@@ -2921,6 +3012,7 @@
     ?back@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAAEAHXZ
     ?back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@XZ
     ?back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@XZ
+    ?back@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@2@XZ
     ?back@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEBUCordRep@cord_internal@2@XZ
     ?back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAAAEAUSubRange@2@XZ
     ?back@?$vector@PEAUCordRep@cord_internal@absl@@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@QEAAAEAPEAUCordRep@cord_internal@absl@@XZ
@@ -2939,6 +3031,7 @@
     ?base@?$move_iterator@PEAUTransition@cctz@time_internal@absl@@@__1@std@@QEBAPEAUTransition@cctz@time_internal@absl@@XZ
     ?base@?$move_iterator@PEAUTransitionType@cctz@time_internal@absl@@@__1@std@@QEBAPEAUTransitionType@cctz@time_internal@absl@@XZ
     ?begin@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
+    ?begin@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@2@XZ
     ?begin@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@2@XZ
     ?begin@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBAPEBUPayload@status_internal@2@XZ
     ?begin@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QEBAPEBVFormatArgImpl@str_format_internal@2@XZ
@@ -3024,10 +3117,13 @@
     ?cordz_info@InlineRep@Cord@absl@@QEBAPEAVCordzInfo@cord_internal@3@XZ
     ?cordz_should_profile@cord_internal@absl@@YA_NXZ
     ?count@FILERawSink@str_format_internal@absl@@QEBA_KXZ
+    ?crc@CordRep@cord_internal@absl@@QEAAPEAUCordRepCrc@23@XZ
+    ?crc@CordRep@cord_internal@absl@@QEBAPEBUCordRepCrc@23@XZ
     ?data@?$FixedArray@PEAUCordRep@cord_internal@absl@@$0?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAPEAHXZ
     ?data@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
+    ?data@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@2@XZ
     ?data@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEBUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@2@XZ
     ?data@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBAPEBUPayload@status_internal@2@XZ
@@ -3060,6 +3156,7 @@
     ?deallocate@?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAAXPEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEAAXPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@_K@Z
     ?deallocate@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRep@cord_internal@absl@@_K@Z
+    ?deallocate@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRepConcat@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAAXPEAPEAVCordzHandle@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEBUCordRep@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEAAXPEAPEBVCordzHandle@cord_internal@absl@@_K@Z
@@ -3075,6 +3172,7 @@
     ?deallocate@?$allocator_traits@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@23@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@PEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@23@PEAPEAUCordRep@cord_internal@absl@@_K@Z
+    ?deallocate@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@23@PEAPEAUCordRepConcat@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@23@PEAPEAVCordzHandle@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@23@PEAPEBUCordRep@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@23@PEAPEBVCordzHandle@cord_internal@absl@@_K@Z
@@ -3110,6 +3208,7 @@
     ?empty@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
+    ?empty@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEBA_NXZ
@@ -3123,6 +3222,7 @@
     ?empty@InlineRep@Cord@absl@@QEBA_NXZ
     ?empty@string_view@absl@@QEBA_NXZ
     ?end@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
+    ?end@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@2@XZ
     ?end@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@2@XZ
     ?end@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBAPEBUPayload@status_internal@2@XZ
     ?end@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QEBAPEBVFormatArgImpl@str_format_internal@2@XZ
@@ -3242,12 +3342,14 @@
     ?gbswap_64@absl@@YA_K_K@Z
     ?get@?$Storage@PEAH$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAHXZ
     ?get@?$Storage@PEAPEAUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAPEAUCordRep@cord_internal@4@XZ
+    ?get@?$Storage@PEAPEAUCordRepConcat@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAPEAUCordRepConcat@cord_internal@4@XZ
     ?get@?$Storage@PEAPEBUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAPEBUCordRep@cord_internal@4@XZ
     ?get@?$Storage@PEAUPayload@status_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAUPayload@status_internal@4@XZ
     ?get@?$Storage@PEAUSubRange@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAUSubRange@4@XZ
     ?get@?$Storage@V?$allocator@H@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@H@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$00$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?get@?$Storage@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGBAAEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -3324,6 +3426,7 @@
     ?max_size@?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEBA_KXZ
+    ?max_size@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEBA_KXZ
@@ -3398,6 +3501,7 @@
     ?push_back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEAUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAX$$QEAPEAUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEAUCordRep@cord_internal@2@@Z
+    ?push_back@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEAUCordRepConcat@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEBUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAX$$QEAUPayload@status_internal@2@@Z
     ?push_back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAAX$$QEAUSubRange@2@@Z
@@ -3514,6 +3618,7 @@
     ?size@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
+    ?size@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEBA_KXZ
diff --git a/symbols_arm64_rel.def b/symbols_arm64_rel.def
index 05fe073..9862ed8 100644
--- a/symbols_arm64_rel.def
+++ b/symbols_arm64_rel.def
@@ -42,11 +42,13 @@
     ??$DivMod@$09@?$BigUnsigned@$03@strings_internal@absl@@AEAAIXZ
     ??$DivMod@$09@?$BigUnsigned@$0FE@@strings_internal@absl@@AEAAIXZ
     ??$EmplaceBack@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBack@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBack@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBack@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBack@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
     ??$EmplaceBack@USubRange@absl@@@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUSubRange@2@$$QEAU32@@Z
     ??$EmplaceBackSlow@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBackSlow@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBackSlow@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBackSlow@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBackSlow@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
@@ -217,6 +219,7 @@
     ?Alloc@LowLevelAlloc@base_internal@absl@@SAPEAX_K@Z
     ?AllocWithArena@LowLevelAlloc@base_internal@absl@@SAPEAX_KPEAUArena@123@@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@Z
+    ?Allocate@?$MallocAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@AEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@AEAV?$allocator@USubRange@absl@@@__1@std@@_K@Z
@@ -327,6 +330,7 @@
     ?Description@TimeZoneInfo@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Description@TimeZoneLibC@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Destroy@CordRep@cord_internal@absl@@SAXPEAU123@@Z
+    ?Destroy@CordRepCrc@cord_internal@absl@@SAXPEAU123@@Z
     ?Destroy@CordRepRing@cord_internal@absl@@CAXPEAV123@@Z
     ?Destroy@PerThreadSem@synchronization_internal@absl@@CAXPEAUThreadIdentity@base_internal@3@@Z
     ?DestroyContents@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
@@ -369,7 +373,10 @@
     ?Erase@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@PEBU453@0@Z
     ?ErasePayload@Status@absl@@QEAA_NVstring_view@2@@Z
     ?Eval@Condition@absl@@QEBA_NXZ
+    ?ExpectedChecksum@Cord@absl@@QEBA?AV?$optional@I@2@XZ
     ?ExtendTransitions@TimeZoneInfo@cctz@time_internal@absl@@AEAA_NXZ
+    ?ExtractAppendBuffer@CordRepBtree@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAV123@_K@Z
+    ?ExtractAppendBuffer@CordRepConcat@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAU123@_K@Z
     ?ExtractFront@CordRepBtree@cord_internal@absl@@CAPEAUCordRep@23@PEAV123@@Z
     ?FDivDuration@absl@@YANVDuration@1@0@Z
     ?FailedPreconditionError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
@@ -558,6 +565,7 @@
     ?MultiplyStep@?$BigUnsigned@$0FE@@strings_internal@absl@@AEAAXHPEBIHH@Z
     ?Mutable@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@_K@Z
     ?MutexDelay@synchronization_internal@absl@@YAHHH@Z
+    ?New@CordRepCrc@cord_internal@absl@@SAPEAU123@PEAUCordRep@23@I@Z
     ?New@CordRepFlat@cord_internal@absl@@SAPEAU123@_K@Z
     ?New@CordRepRing@cord_internal@absl@@CAPEAV123@_K0@Z
     ?NewArena@LowLevelAlloc@base_internal@absl@@SAPEAUArena@123@H@Z
@@ -663,6 +671,7 @@
     ?Seek@CordRepBtreeReader@cord_internal@absl@@QEAA?AVstring_view@3@_K@Z
     ?SetCapacityForTesting@CordRepRing@cord_internal@absl@@QEAAX_K@Z
     ?SetCurrentThreadIdentity@base_internal@absl@@YAXPEAUThreadIdentity@12@P6AXPEAX@Z@Z
+    ?SetExpectedChecksum@Cord@absl@@QEAAXI@Z
     ?SetHashtablezEnabled@container_internal@absl@@YAX_N@Z
     ?SetHashtablezMaxSamples@container_internal@absl@@YAXH@Z
     ?SetHashtablezSampleParameter@container_internal@absl@@YAXH@Z
diff --git a/symbols_x64_dbg.def b/symbols_x64_dbg.def
index 1b2ccf3..1182188 100644
--- a/symbols_x64_dbg.def
+++ b/symbols_x64_dbg.def
@@ -5,6 +5,7 @@
     ??$?0$$CBVFormatArgImpl@str_format_internal@absl@@$$CBV012@@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QEAA@V?$initializer_list@VFormatArgImpl@str_format_internal@absl@@@std@@@Z
     ??$?0$$T@?$Storage@PEAH$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAPEAUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
+    ??$?0$$T@?$Storage@PEAPEAUCordRepConcat@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAPEBUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAUPayload@status_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
     ??$?0$$T@?$Storage@PEAUSubRange@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEA$$T@Z
@@ -49,6 +50,8 @@
     ??$?0$00X@?$unique_ptr@VTimeZoneInfo@cctz@time_internal@absl@@U?$default_delete@VTimeZoneInfo@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@PEAVTimeZoneInfo@cctz@time_internal@absl@@@Z
     ??$?0$00X@?$unique_ptr@VZoneInfoSource@cctz@time_internal@absl@@U?$default_delete@VZoneInfoSource@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@$$T@Z
     ??$?0$00X@?$unique_ptr@VZoneInfoSource@cctz@time_internal@absl@@U?$default_delete@VZoneInfoSource@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@PEAVZoneInfoSource@cctz@time_internal@absl@@@Z
+    ??$?0AEAI$0A@@?$optional@I@absl@@QEAA@AEAI@Z
+    ??$?0AEAI@?$optional_data_dtor_base@I$00@optional_internal@absl@@IEAA@Uin_place_t@2@AEAI@Z
     ??$?0AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@V?$__allocator_destructor@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@@?$__compressed_pair@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@V?$__allocator_destructor@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@@__1@std@@QEAA@AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@$$QEAV?$__allocator_destructor@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@12@@Z
     ??$?0AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@X@?$__compressed_pair_elem@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@$0A@$0A@@__1@std@@QEAA@AEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@Z
     ??$?0AEAPEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@12@@?$__compressed_pair@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@@__1@std@@QEAA@AEAPEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@12@$$QEAV?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@12@@Z
@@ -73,6 +76,9 @@
     ??$?0AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
     ??$?0AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@X@?$__compressed_pair_elem@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$00$0A@@__1@std@@QEAA@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@12@@Z
+    ??$?0AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$T$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QEAA@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
+    ??$?0AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
+    ??$?0AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??$?0AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@X@?$__compressed_pair_elem@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@$00$0A@@__1@std@@QEAA@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@12@@Z
     ??$?0AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$T$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@QEAA@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
     ??$?0AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEA$$T@Z
@@ -173,6 +179,9 @@
     ??$?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEAA@$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
     ??$?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
+    ??$?0V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
+    ??$?0V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEAA@$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEAH@Z
+    ??$?0V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QEAH@Z
     ??$?0V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEAA@$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
     ??$?0V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@U?$integer_sequence@_K$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QEAA@Uin_place_t@3@$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$$QEAH@Z
@@ -269,16 +278,12 @@
     ??$ConstructElements@V?$allocator@H@__1@std@@V?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@H@__1@std@@PEAHAEAV?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@1@AEAV?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@01@_K@Z
     ??$ConstructElements@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@01@_K@Z
+    ??$ConstructElements@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@01@_K@Z
     ??$ConstructElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@1@AEAV?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@01@_K@Z
     ??$ConstructElements@V?$allocator@USubRange@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@USubRange@absl@@@__1@std@@V?$move_iterator@PEAUSubRange@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@1@AEAV?$IteratorValueAdapter@V?$allocator@USubRange@absl@@@__1@std@@V?$move_iterator@PEAUSubRange@absl@@@23@@01@_K@Z
     ??$Convert@VFormatArgImpl@str_format_internal@absl@@@FormatArgImplFriend@str_format_internal@absl@@SA_NVFormatArgImpl@12@VFormatConversionSpecImpl@12@PEAVFormatSinkImpl@12@@Z
-    ??$DestroyElements@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@H@__1@std@@PEAH_K@Z
-    ??$DestroyElements@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@1@_K@Z
-    ??$DestroyElements@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@1@_K@Z
-    ??$DestroyElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@1@_K@Z
-    ??$DestroyElements@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@1@_K@Z
     ??$Dispatch@C@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PEAX@Z
     ??$Dispatch@D@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PEAX@Z
     ??$Dispatch@E@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PEAX@Z
@@ -305,6 +310,7 @@
     ??$EmplaceBack@AEBH@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAHAEBH@Z
     ??$EmplaceBack@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBack@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBack@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBack@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBack@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBack@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
@@ -312,6 +318,7 @@
     ??$EmplaceBackSlow@AEBH@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AEAAAEAHAEBH@Z
     ??$EmplaceBackSlow@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBackSlow@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBackSlow@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBackSlow@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBackSlow@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBackSlow@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
@@ -577,6 +584,10 @@
     ??$construct@PEAUCordRep@cord_internal@absl@@AEBQEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@12@PEAPEAUCordRep@cord_internal@absl@@AEBQEAU456@@Z
     ??$construct@PEAUCordRep@cord_internal@absl@@PEAU123@@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRep@cord_internal@absl@@$$QEAPEAU345@@Z
     ??$construct@PEAUCordRep@cord_internal@absl@@PEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@12@PEAPEAUCordRep@cord_internal@absl@@$$QEAPEAU456@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@AEBQEAU123@@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRepConcat@cord_internal@absl@@AEBQEAU345@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@AEBQEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@12@PEAPEAUCordRepConcat@cord_internal@absl@@AEBQEAU456@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@PEAU123@@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRepConcat@cord_internal@absl@@$$QEAPEAU345@@Z
+    ??$construct@PEAUCordRepConcat@cord_internal@absl@@PEAU123@X@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@12@PEAPEAUCordRepConcat@cord_internal@absl@@$$QEAPEAU456@@Z
     ??$construct@PEAVCordzHandle@cord_internal@absl@@AEBQEAV123@@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAAXPEAPEAVCordzHandle@cord_internal@absl@@AEBQEAV345@@Z
     ??$construct@PEAVCordzHandle@cord_internal@absl@@AEBQEAV123@X@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@12@PEAPEAVCordzHandle@cord_internal@absl@@AEBQEAV456@@Z
     ??$construct@PEBUCordRep@cord_internal@absl@@AEBQEBU123@@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEBUCordRep@cord_internal@absl@@AEBQEBU345@@Z
@@ -641,6 +652,7 @@
     ??$emplace_back@AEBH@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAAEAHAEBH@Z
     ??$emplace_back@AEBQEAUCordRep@cord_internal@absl@@@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@1@AEBQEAU231@@Z
     ??$emplace_back@AEBQEAUCordRep@cord_internal@absl@@@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@1@AEBQEAU231@@Z
+    ??$emplace_back@AEBQEAUCordRepConcat@cord_internal@absl@@@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@1@AEBQEAU231@@Z
     ??$emplace_back@AEBQEBUCordRep@cord_internal@absl@@@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEBUCordRep@cord_internal@1@AEBQEBU231@@Z
     ??$emplace_back@PEAUCordRep@cord_internal@absl@@@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@1@$$QEAPEAU231@@Z
     ??$emplace_back@UPayload@status_internal@absl@@@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAAEAUPayload@status_internal@1@$$QEAU231@@Z
@@ -662,6 +674,7 @@
     ??$forward@AEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@01@AEAV201@@Z
     ??$forward@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@01@AEAV201@@Z
     ??$forward@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@YAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
+    ??$forward@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@YAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@01@AEAV201@@Z
     ??$forward@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@YAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@AEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@YAAEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@01@AEAV201@@Z
@@ -675,6 +688,7 @@
     ??$forward@AEA_K@absl@@YAAEA_KAEA_K@Z
     ??$forward@AEBQEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@YAAEBQEAPEBVImpl@time_zone@cctz@time_internal@absl@@AEBQEAPEBV23456@@Z
     ??$forward@AEBQEAUCordRep@cord_internal@absl@@@__1@std@@YAAEBQEAUCordRep@cord_internal@absl@@AEBQEAU234@@Z
+    ??$forward@AEBQEAUCordRepConcat@cord_internal@absl@@@__1@std@@YAAEBQEAUCordRepConcat@cord_internal@absl@@AEBQEAU234@@Z
     ??$forward@AEBQEAVCordzHandle@cord_internal@absl@@@__1@std@@YAAEBQEAVCordzHandle@cord_internal@absl@@AEBQEAV234@@Z
     ??$forward@AEBQEBUCordRep@cord_internal@absl@@@__1@std@@YAAEBQEBUCordRep@cord_internal@absl@@AEBQEBU234@@Z
     ??$forward@AEBQEBVCordzHandle@cord_internal@absl@@@__1@std@@YAAEBQEBVCordzHandle@cord_internal@absl@@AEBQEBV234@@Z
@@ -691,6 +705,7 @@
     ??$forward@PEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@YA$$QEAPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@01@AEAPEAPEAU201@@Z
     ??$forward@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@YA$$QEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@AEAPEAPEBV23456@@Z
     ??$forward@PEAUCordRep@cord_internal@absl@@@__1@std@@YA$$QEAPEAUCordRep@cord_internal@absl@@AEAPEAU234@@Z
+    ??$forward@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@YA$$QEAPEAUCordRepConcat@cord_internal@absl@@AEAPEAU234@@Z
     ??$forward@PEAV?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@@__1@std@@YA$$QEAPEAV?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@AEAPEAV23@@Z
     ??$forward@PEAVCondVar@absl@@@__1@std@@YA$$QEAPEAVCondVar@absl@@AEAPEAV23@@Z
     ??$forward@PEAVMutex@absl@@@__1@std@@YA$$QEAPEAVMutex@absl@@AEAPEAV23@@Z
@@ -709,6 +724,7 @@
     ??$forward@V?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@YA$$QEAV?$__hash_node_destructor@V?$allocator@U?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@01@AEAV201@@Z
     ??$forward@V?$allocator@H@__1@std@@@absl@@YA$$QEAV?$allocator@H@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
+    ??$forward@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@AEAV123@@Z
     ??$forward@V?$allocator@USubRange@absl@@@__1@std@@@absl@@YA$$QEAV?$allocator@USubRange@absl@@@__1@std@@AEAV123@@Z
@@ -721,6 +737,9 @@
     ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAPEAPEAUCordRep@cord_internal@2@XZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEA_KXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGBAAEB_KXZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QEGAAAEAPEAPEAUCordRepConcat@cord_internal@2@XZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEA_KXZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGBAAEB_KXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAPEAPEBUCordRep@cord_internal@2@XZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEA_KXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGBAAEB_KXZ
@@ -736,6 +755,8 @@
     ??$get@$0A@@?$CompressedTuple@V?$allocator@H@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@H@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
+    ??$get@$0A@@?$CompressedTuple@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@container_internal@absl@@QEGAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@absl@@@container_internal@absl@@QEGAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -754,6 +775,7 @@
     ??$max_size@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@12@@Z
     ??$max_size@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAUCordRep@cord_internal@absl@@@12@@Z
+    ??$max_size@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEAVCordzHandle@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEBUCordRep@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SA_KAEBV?$allocator@PEBVCordzHandle@cord_internal@absl@@@12@@Z
@@ -787,6 +809,7 @@
     ??$move@AEAUViableSubstitution@strings_internal@absl@@@__1@std@@YA$$QEAUViableSubstitution@strings_internal@absl@@AEAU234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
+    ??$move@AEAV?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
     ??$move@AEAV?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QEAV?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAV234@@Z
@@ -818,6 +841,7 @@
     ??$upper_bound@PEBUTransition@cctz@time_internal@absl@@U1234@UByUnixTime@1234@@__1@std@@YAPEBUTransition@cctz@time_internal@absl@@PEBU2345@0AEBU2345@UByUnixTime@2345@@Z
     ??0?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@H@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEAV?$allocator@USubRange@absl@@@__1@std@@@Z
@@ -834,6 +858,7 @@
     ??0?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@_KAEBQEAUCordRep@cord_internal@1@AEBV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAA@AEBV01@@Z
     ??0?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAA@AEBV01@AEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
@@ -841,6 +866,7 @@
     ??0?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAA@XZ
     ??0?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAH@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@QEAA@AEBQEBUPayload@status_internal@2@@Z
     ??0?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@QEAA@AEBV?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@@Z
@@ -864,6 +890,7 @@
     ??0?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??0?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEBV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
+    ??0?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??0?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??0?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@AEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
     ??0?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
@@ -937,6 +964,7 @@
     ??0?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAA@XZ
+    ??0?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAA@XZ
     ??0?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEAA@XZ
@@ -983,17 +1011,22 @@
     ??0?$deque@PEBVImpl@time_zone@cctz@time_internal@absl@@V?$allocator@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@QEAA@XZ
     ??0?$move_iterator@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAA@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@Z
     ??0?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@QEAA@PEAPEAUCordRep@cord_internal@absl@@@Z
+    ??0?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAA@PEAPEAUCordRepConcat@cord_internal@absl@@@Z
     ??0?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@QEAA@PEAPEBUCordRep@cord_internal@absl@@@Z
     ??0?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@QEAA@PEAUPayload@status_internal@absl@@@Z
     ??0?$move_iterator@PEAUSubRange@absl@@@__1@std@@QEAA@PEAUSubRange@absl@@@Z
     ??0?$move_iterator@PEAUTransition@cctz@time_internal@absl@@@__1@std@@QEAA@PEAUTransition@cctz@time_internal@absl@@@Z
     ??0?$move_iterator@PEAUTransitionType@cctz@time_internal@absl@@@__1@std@@QEAA@PEAUTransitionType@cctz@time_internal@absl@@@Z
+    ??0?$optional@I@absl@@QEAA@Unullopt_t@1@@Z
     ??0?$optional@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@absl@@QEAA@XZ
     ??0?$optional@VCord@absl@@@absl@@QEAA@Unullopt_t@1@@Z
+    ??0?$optional_data@I$00@optional_internal@absl@@QEAA@XZ
     ??0?$optional_data@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@$0A@@optional_internal@absl@@IEAA@XZ
     ??0?$optional_data@VCord@absl@@$0A@@optional_internal@absl@@IEAA@XZ
+    ??0?$optional_data_base@I@optional_internal@absl@@QEAA@XZ
     ??0?$optional_data_base@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@optional_internal@absl@@QEAA@XZ
     ??0?$optional_data_base@VCord@absl@@@optional_internal@absl@@QEAA@XZ
+    ??0?$optional_data_dtor_base@I$00@optional_internal@absl@@IEAA@XZ
     ??0?$optional_data_dtor_base@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@$0A@@optional_internal@absl@@IEAA@XZ
     ??0?$optional_data_dtor_base@VCord@absl@@$0A@@optional_internal@absl@@IEAA@XZ
     ??0?$probe_seq@$0BA@@container_internal@absl@@QEAA@_K0@Z
@@ -1046,6 +1079,7 @@
     ??0CordRepBtreeNavigator@cord_internal@absl@@QEAA@XZ
     ??0CordRepBtreeReader@cord_internal@absl@@QEAA@XZ
     ??0CordRepConcat@cord_internal@absl@@QEAA@XZ
+    ??0CordRepCrc@cord_internal@absl@@QEAA@XZ
     ??0CordRepExternal@cord_internal@absl@@QEAA@XZ
     ??0CordRepFlat@cord_internal@absl@@QEAA@XZ
     ??0CordRepRing@cord_internal@absl@@AEAA@I@Z
@@ -1157,6 +1191,7 @@
     ??0uint128@absl@@QEAA@_K@Z
     ??1?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
+    ??1?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
@@ -1164,6 +1199,7 @@
     ??1?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
+    ??1?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAA@XZ
     ??1?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAA@XZ
@@ -1171,6 +1207,7 @@
     ??1?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
+    ??1?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
     ??1?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA@XZ
@@ -1369,6 +1406,7 @@
     ??D?$__wrap_iter@PEBUConversionItem@ParsedFormatBase@str_format_internal@absl@@@__1@std@@QEBAAEBUConversionItem@ParsedFormatBase@str_format_internal@absl@@XZ
     ??D?$move_iterator@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEBA$$QEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@XZ
     ??D?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@QEBA$$QEAPEAUCordRep@cord_internal@absl@@XZ
+    ??D?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEBA$$QEAPEAUCordRepConcat@cord_internal@absl@@XZ
     ??D?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@QEBA$$QEAPEBUCordRep@cord_internal@absl@@XZ
     ??D?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@QEBA$$QEAUPayload@status_internal@absl@@XZ
     ??D?$move_iterator@PEAUSubRange@absl@@@__1@std@@QEBA$$QEAUSubRange@absl@@XZ
@@ -1386,6 +1424,7 @@
     ??E?$__wrap_iter@PEBUConversionItem@ParsedFormatBase@str_format_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@__1@std@@QEAAAEAV012@XZ
+    ??E?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAUPayload@status_internal@absl@@@__1@std@@QEAAAEAV012@XZ
     ??E?$move_iterator@PEAUSubRange@absl@@@__1@std@@QEAAAEAV012@XZ
@@ -1434,6 +1473,7 @@
     ??R<lambda_1>@?0???$AddRing@$0A@@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@0_K1@Z@QEBA?A?<auto>@@I@Z
     ??R<lambda_1>@?0???$Fill@$00@CordRepRing@cord_internal@absl@@AEAAXPEBV123@II@Z@QEBA?A?<auto>@@I@Z
     ??R<lambda_1>@?0???$Fill@$0A@@CordRepRing@cord_internal@absl@@AEAAXPEBV123@II@Z@QEBA?A?<auto>@@I@Z
+    ??R<lambda_1>@?0???$Initialize@V?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXV?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$FixedArray@PEAUCordRep@cord_internal@absl@@$0?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAAEAUPayload@status_internal@2@_K@Z@QEBA?A?<auto>@@XZ
@@ -1449,9 +1489,17 @@
     ??R<lambda_1>@?0??CheckLengthInternal@string_view@absl@@CA_K_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??CompareSlowPath@Cord@absl@@AEBAHAEBV23@_K1@Z@QEBA?A?<auto>@@PEAVChunkIterator@23@PEAVstring_view@3@@Z
     ??R<lambda_1>@?0??CompareSlowPath@Cord@absl@@AEBAHVstring_view@3@_K1@Z@QEBA?A?<auto>@@PEAVChunkIterator@23@PEAV43@@Z
+    ??R<lambda_1>@?0??InitFrom@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXAEBV234@@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAAEAHXZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
+    ??R<lambda_1>@?0??back@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEBUCordRep@cord_internal@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAAAEAUSubRange@3@XZ@QEBA?A?<auto>@@XZ
     ??R<lambda_1>@?0??erase@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@3@PEBU453@@Z@QEBA?A?<auto>@@XZ
@@ -1466,6 +1514,7 @@
     ??R<lambda_1>@?0??set_inline_size@InlineData@cord_internal@absl@@QEAAX_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_2>@?0???$AddRing@$00@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@0_K1@Z@QEBA?A?<auto>@@I@Z
     ??R<lambda_2>@?0???$AddRing@$0A@@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@0_K1@Z@QEBA?A?<auto>@@I@Z
+    ??R<lambda_2>@?0???$Initialize@V?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXV?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@_K@Z@QEBA?A?<auto>@@XZ
     ??R<lambda_2>@?0??erase@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@3@PEBU453@@Z@QEBA?A?<auto>@@XZ
     ??R?$FunctionRef@$$A6AXPEAUCordRep@cord_internal@absl@@_K1@Z@absl@@QEBAXPEAUCordRep@cord_internal@1@_K1@Z
     ??R?$FunctionRef@$$A6AXV?$Span@I@absl@@@Z@absl@@QEBAXV?$Span@I@1@@Z
@@ -1529,6 +1578,7 @@
     ?AddSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
+    ?AddSize@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
     ?AddSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAX_K@Z
@@ -1552,11 +1602,13 @@
     ?AllocWithArena@LowLevelAlloc@base_internal@absl@@SAPEAX_KPEAUArena@123@@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAPEAH_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@_K@Z
+    ?Allocate@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@3@_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEBUCordRep@cord_internal@3@_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@_K@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUSubRange@3@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@H@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@H@__1@std@@@23@AEAV?$allocator@H@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@_K@Z
+    ?Allocate@?$MallocAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@AEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@_K@Z
     ?Allocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@AEAV?$allocator@USubRange@absl@@@__1@std@@_K@Z
@@ -1658,6 +1710,7 @@
     ?ConstructNext@?$CopyValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PEAH@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@H@__1@std@@PEAH@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@@Z
+    ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PEAPEBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PEBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PEAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@QEAAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@@Z
@@ -1703,12 +1756,14 @@
     ?DeadlineExceededError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@H@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@H@__1@std@@PEAH_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@_K@Z
+    ?Deallocate@?$MallocAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@3@_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@3@_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@_K@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@3@_K@Z
     ?DeallocateIfAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
+    ?DeallocateIfAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?DeallocateIfAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
@@ -1731,10 +1786,17 @@
     ?Description@TimeZoneLibC@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Destroy@CordRep@cord_internal@absl@@SAXPEAU123@@Z
     ?Destroy@CordRepBtree@cord_internal@absl@@SAXPEAV123@@Z
+    ?Destroy@CordRepCrc@cord_internal@absl@@SAXPEAU123@@Z
     ?Destroy@CordRepRing@cord_internal@absl@@CAXPEAV123@@Z
     ?Destroy@PerThreadSem@synchronization_internal@absl@@CAXPEAUThreadIdentity@base_internal@3@@Z
     ?DestroyContents@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?DestroyCordSlow@Cord@absl@@AEAAXXZ
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@H@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@H@__1@std@@PEAH_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@PEAPEAUCordRep@cord_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@PEAPEAUCordRepConcat@cord_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@PEAPEBUCordRep@cord_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PEAUPayload@status_internal@3@_K@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@USubRange@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAEAV?$allocator@USubRange@absl@@@__1@std@@PEAUSubRange@3@_K@Z
     ?DestroyLeaf@CordRepBtree@cord_internal@absl@@CAXPEAV123@_K1@Z
     ?DestroyNonLeaf@CordRepBtree@cord_internal@absl@@CAXPEAV123@_K1@Z
     ?DestroyTree@CordRepBtree@cord_internal@absl@@CAXPEAV123@_K1@Z
@@ -1743,6 +1805,7 @@
     ?DiagnosticsHandleIsSafeToInspect@CordzHandle@cord_internal@absl@@QEBA_NPEBV123@@Z
     ?DidAllocate@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
+    ?DidAllocate@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA_NXZ
@@ -1810,7 +1873,10 @@
     ?ErasePayload@Status@absl@@QEAA_NVstring_view@2@@Z
     ?Eval@Condition@absl@@QEBA_NXZ
     ?Excess@str_format_internal@absl@@YA_K_K0@Z
+    ?ExpectedChecksum@Cord@absl@@QEBA?AV?$optional@I@2@XZ
     ?ExtendTransitions@TimeZoneInfo@cctz@time_internal@absl@@AEAA_NXZ
+    ?ExtractAppendBuffer@CordRepBtree@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAV123@_K@Z
+    ?ExtractAppendBuffer@CordRepConcat@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAU123@_K@Z
     ?ExtractFront@CordRepBtree@cord_internal@absl@@CAPEAUCordRep@23@PEAV123@@Z
     ?FDivDuration@absl@@YANVDuration@1@0@Z
     ?FailedPreconditionError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
@@ -1906,24 +1972,28 @@
     ?GetAllocatedCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
+    ?GetAllocatedCapacity@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetAllocatedData@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAPEAHXZ
     ?GetAllocatedData@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
+    ?GetAllocatedData@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEBUCordRep@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@XZ
     ?GetAllocatedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAPEBUPayload@status_internal@3@XZ
     ?GetAllocatedData@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUSubRange@3@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@H@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?GetAllocator@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@USubRange@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@H@__1@std@@XZ
     ?GetAllocator@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?GetAllocator@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -1934,6 +2004,7 @@
     ?GetCachedTID@base_internal@absl@@YAIXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
+    ?GetCapacity@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
@@ -1944,6 +2015,7 @@
     ?GetCurrentTimeNanos@absl@@YA_JXZ
     ?GetData@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAHXZ
     ?GetData@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAPEAUCordRep@cord_internal@3@XZ
+    ?GetData@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAPEAUCordRepConcat@cord_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAPEBUCordRep@cord_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUPayload@status_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUSubRange@3@XZ
@@ -1954,12 +2026,14 @@
     ?GetInlinedCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
+    ?GetInlinedCapacity@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetInlinedData@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAPEAHXZ
     ?GetInlinedData@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRep@cord_internal@3@XZ
+    ?GetInlinedData@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAPEBUCordRep@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@XZ
     ?GetInlinedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAPEBUPayload@status_internal@3@XZ
@@ -1967,6 +2041,7 @@
     ?GetIsAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
+    ?GetIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
     ?GetIsAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_NXZ
@@ -1986,6 +2061,7 @@
     ?GetSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
+    ?GetSize@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
     ?GetSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBA_KXZ
@@ -1995,6 +2071,8 @@
     ?GetSizeAndIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
+    ?GetSizeAndIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
+    ?GetSizeAndIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
     ?GetSizeAndIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEBAAEB_KXZ
     ?GetSizeAndIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEA_KXZ
@@ -2073,6 +2151,7 @@
     ?IsCancelled@absl@@YA_NAEBVStatus@1@@Z
     ?IsConcat@CordRep@cord_internal@absl@@QEBA_NXZ
     ?IsCooperative@SpinLock@base_internal@absl@@CA_NW4SchedulingMode@23@@Z
+    ?IsCrc@CordRep@cord_internal@absl@@QEBA_NXZ
     ?IsDataEdge@CordRepBtree@cord_internal@absl@@SA_NPEBUCordRep@23@@Z
     ?IsDataLoss@absl@@YA_NAEBVStatus@1@@Z
     ?IsDeadlineExceeded@absl@@YA_NAEBVStatus@1@@Z
@@ -2088,7 +2167,6 @@
     ?IsInternal@absl@@YA_NAEBVStatus@1@@Z
     ?IsInvalidArgument@absl@@YA_NAEBVStatus@1@@Z
     ?IsMovedFrom@Status@absl@@CA_N_K@Z
-    ?IsMutable@RefcountAndFlags@cord_internal@absl@@QEAA_NXZ
     ?IsNotFound@absl@@YA_NAEBVStatus@1@@Z
     ?IsOne@RefcountAndFlags@cord_internal@absl@@QEAA_NXZ
     ?IsOutOfRange@absl@@YA_NAEBVStatus@1@@Z
@@ -2144,6 +2222,7 @@
     ?MakeStorageView@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@H@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
+    ?MakeStorageView@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAA?AU?$StorageView@V?$allocator@USubRange@absl@@@__1@std@@@23@XZ
@@ -2181,6 +2260,7 @@
     ?New@CordRepBtree@cord_internal@absl@@SAPEAV123@H@Z
     ?New@CordRepBtree@cord_internal@absl@@SAPEAV123@PEAUCordRep@23@@Z
     ?New@CordRepBtree@cord_internal@absl@@SAPEAV123@PEAV123@0@Z
+    ?New@CordRepCrc@cord_internal@absl@@SAPEAU123@PEAUCordRep@23@I@Z
     ?New@CordRepFlat@cord_internal@absl@@SAPEAU123@_K@Z
     ?New@CordRepRing@cord_internal@absl@@CAPEAV123@_K0@Z
     ?NewArena@LowLevelAlloc@base_internal@absl@@SAPEAUArena@123@H@Z
@@ -2190,6 +2270,7 @@
     ?NextCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
+    ?NextCapacity@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
     ?NextCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@SA_K_K@Z
@@ -2303,12 +2384,14 @@
     ?RegisterSymbolizer@absl@@YAXP6A_NPEBXPEADH@Z@Z
     ?Release@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@H@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
+    ?Release@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEHAA?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@XZ
     ?Release@ReleasableMutexLock@absl@@QEAAXXZ
     ?Remove@CondVar@absl@@AEAAXPEAUPerThreadSynch@base_internal@2@@Z
     ?RemoveChunkPrefix@ChunkIterator@Cord@absl@@AEAAX_K@Z
+    ?RemoveCrcNode@cord_internal@absl@@YAPEAUCordRep@12@PEAU312@@Z
     ?RemoveEdge@GraphCycles@synchronization_internal@absl@@QEAAXUGraphId@23@0@Z
     ?RemoveExtraAsciiWhitespace@absl@@YAXPEAV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@Z
     ?RemoveNode@GraphCycles@synchronization_internal@absl@@QEAAXPEAX@Z
@@ -2320,6 +2403,7 @@
     ?RepToPointer@Status@absl@@CAPEAUStatusRep@status_internal@2@_K@Z
     ?Reset@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
+    ?Reset@?$AllocationTransaction@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
@@ -2339,6 +2423,7 @@
     ?SetAllocation@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@H@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
+    ?SetAllocation@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@@Z
@@ -2347,6 +2432,7 @@
     ?SetCordRep@CordzInfo@cord_internal@absl@@QEAAXPEAUCordRep@23@@Z
     ?SetCordRep@CordzUpdateScope@cord_internal@absl@@QEBAXPEAUCordRep@23@@Z
     ?SetCurrentThreadIdentity@base_internal@absl@@YAXPEAUThreadIdentity@12@P6AXPEAX@Z@Z
+    ?SetExpectedChecksum@Cord@absl@@QEAAXI@Z
     ?SetFlags@FormatConversionSpecImplFriend@str_format_internal@absl@@SAXW4Flags@23@PEAVFormatConversionSpecImpl@23@@Z
     ?SetHashtablezEnabled@container_internal@absl@@YAX_N@Z
     ?SetHashtablezMaxSamples@container_internal@absl@@YAXH@Z
@@ -2354,6 +2440,7 @@
     ?SetIsAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
+    ?SetIsAllocated@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
     ?SetIsAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAXXZ
@@ -2385,6 +2472,8 @@
     ?SizeofCordRepExternal@CordTestAccess@strings_internal@absl@@SA_KXZ
     ?SizeofCordRepSubstring@CordTestAccess@strings_internal@absl@@SA_KXZ
     ?Skip@CordRepBtreeNavigator@cord_internal@absl@@QEAA?AUPosition@123@_K@Z
+    ?SkipCrcNode@cord_internal@absl@@YAPEAUCordRep@12@PEAU312@@Z
+    ?SkipCrcNode@cord_internal@absl@@YAPEBUCordRep@12@PEBU312@@Z
     ?SleepFor@absl@@YAXVDuration@1@@Z
     ?SlowLock@SpinLock@base_internal@absl@@AEAAXXZ
     ?SlowUnlock@SpinLock@base_internal@absl@@AEAAXI@Z
@@ -2877,6 +2966,7 @@
     ?allocate@?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAAPEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@_K@Z
     ?allocate@?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEAAPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@_K@Z
     ?allocate@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAAPEAPEAUCordRep@cord_internal@absl@@_K@Z
+    ?allocate@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAPEAPEAUCordRepConcat@cord_internal@absl@@_K@Z
     ?allocate@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAAPEAPEAVCordzHandle@cord_internal@absl@@_K@Z
     ?allocate@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAAPEAPEBUCordRep@cord_internal@absl@@_K@Z
     ?allocate@?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEAAPEAPEBVCordzHandle@cord_internal@absl@@_K@Z
@@ -2892,6 +2982,7 @@
     ?allocate@?$allocator_traits@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@AEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SAPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@AEAV?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAUCordRep@cord_internal@absl@@AEAV?$allocator@PEAUCordRep@cord_internal@absl@@@23@_K@Z
+    ?allocate@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAUCordRepConcat@cord_internal@absl@@AEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEAVCordzHandle@cord_internal@absl@@AEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEBUCordRep@cord_internal@absl@@AEAV?$allocator@PEBUCordRep@cord_internal@absl@@@23@_K@Z
     ?allocate@?$allocator_traits@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAPEAPEBVCordzHandle@cord_internal@absl@@AEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@23@_K@Z
@@ -2921,6 +3012,7 @@
     ?back@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAAEAHXZ
     ?back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@XZ
     ?back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRep@cord_internal@2@XZ
+    ?back@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@2@XZ
     ?back@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAAEAPEBUCordRep@cord_internal@2@XZ
     ?back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAAAEAUSubRange@2@XZ
     ?back@?$vector@PEAUCordRep@cord_internal@absl@@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@QEAAAEAPEAUCordRep@cord_internal@absl@@XZ
@@ -2939,6 +3031,7 @@
     ?base@?$move_iterator@PEAUTransition@cctz@time_internal@absl@@@__1@std@@QEBAPEAUTransition@cctz@time_internal@absl@@XZ
     ?base@?$move_iterator@PEAUTransitionType@cctz@time_internal@absl@@@__1@std@@QEBAPEAUTransitionType@cctz@time_internal@absl@@XZ
     ?begin@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
+    ?begin@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@2@XZ
     ?begin@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@2@XZ
     ?begin@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBAPEBUPayload@status_internal@2@XZ
     ?begin@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QEBAPEBVFormatArgImpl@str_format_internal@2@XZ
@@ -3024,10 +3117,13 @@
     ?cordz_info@InlineRep@Cord@absl@@QEBAPEAVCordzInfo@cord_internal@3@XZ
     ?cordz_should_profile@cord_internal@absl@@YA_NXZ
     ?count@FILERawSink@str_format_internal@absl@@QEBA_KXZ
+    ?crc@CordRep@cord_internal@absl@@QEAAPEAUCordRepCrc@23@XZ
+    ?crc@CordRep@cord_internal@absl@@QEBAPEBUCordRepCrc@23@XZ
     ?data@?$FixedArray@PEAUCordRep@cord_internal@absl@@$0?0V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEAAPEAHXZ
     ?data@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
+    ?data@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@2@XZ
     ?data@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEBUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@2@XZ
     ?data@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBAPEBUPayload@status_internal@2@XZ
@@ -3060,6 +3156,7 @@
     ?deallocate@?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEAAXPEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEAAXPEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@_K@Z
     ?deallocate@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRep@cord_internal@absl@@_K@Z
+    ?deallocate@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEAAXPEAPEAUCordRepConcat@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEAAXPEAPEAVCordzHandle@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEAAXPEAPEBUCordRep@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEAAXPEAPEBVCordzHandle@cord_internal@absl@@_K@Z
@@ -3075,6 +3172,7 @@
     ?deallocate@?$allocator_traits@V?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@23@PEAPEAPEBVImpl@time_zone@cctz@time_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@23@PEAPEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@23@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@23@PEAPEAUCordRep@cord_internal@absl@@_K@Z
+    ?deallocate@?$allocator_traits@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@23@PEAPEAUCordRepConcat@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEAVCordzHandle@cord_internal@absl@@@23@PEAPEAVCordzHandle@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@23@PEAPEBUCordRep@cord_internal@absl@@_K@Z
     ?deallocate@?$allocator_traits@V?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAEAV?$allocator@PEBVCordzHandle@cord_internal@absl@@@23@PEAPEBVCordzHandle@cord_internal@absl@@_K@Z
@@ -3110,6 +3208,7 @@
     ?empty@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
+    ?empty@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBA_NXZ
     ?empty@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEBA_NXZ
@@ -3123,6 +3222,7 @@
     ?empty@InlineRep@Cord@absl@@QEBA_NXZ
     ?empty@string_view@absl@@QEBA_NXZ
     ?end@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRep@cord_internal@2@XZ
+    ?end@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAPEAPEAUCordRepConcat@cord_internal@2@XZ
     ?end@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAPEAUPayload@status_internal@2@XZ
     ?end@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBAPEBUPayload@status_internal@2@XZ
     ?end@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QEBAPEBVFormatArgImpl@str_format_internal@2@XZ
@@ -3242,12 +3342,14 @@
     ?gbswap_64@absl@@YA_K_K@Z
     ?get@?$Storage@PEAH$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAHXZ
     ?get@?$Storage@PEAPEAUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAPEAUCordRep@cord_internal@4@XZ
+    ?get@?$Storage@PEAPEAUCordRepConcat@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAPEAUCordRepConcat@cord_internal@4@XZ
     ?get@?$Storage@PEAPEBUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAPEBUCordRep@cord_internal@4@XZ
     ?get@?$Storage@PEAUPayload@status_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAUPayload@status_internal@4@XZ
     ?get@?$Storage@PEAUSubRange@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QEGAAAEAPEAUSubRange@4@XZ
     ?get@?$Storage@V?$allocator@H@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@H@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$00$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?get@?$Storage@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGAAAEAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QEGBAAEBV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -3324,6 +3426,7 @@
     ?max_size@?$allocator@PEAPEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEAU?$__hash_node_base@PEAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PEBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PEAX@__1@std@@@__1@std@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@QEBA_KXZ
+    ?max_size@?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEAVCordzHandle@cord_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@QEBA_KXZ
     ?max_size@?$allocator@PEBVCordzHandle@cord_internal@absl@@@__1@std@@QEBA_KXZ
@@ -3398,6 +3501,7 @@
     ?push_back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEAUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAX$$QEAPEAUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEAUCordRep@cord_internal@2@@Z
+    ?push_back@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEAUCordRepConcat@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEAAXAEBQEBUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEAAX$$QEAUPayload@status_internal@2@@Z
     ?push_back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEAAX$$QEAUSubRange@2@@Z
@@ -3514,6 +3618,7 @@
     ?size@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$01V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
+    ?size@?$InlinedVector@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QEBA_KXZ
     ?size@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QEBA_KXZ
diff --git a/symbols_x64_rel.def b/symbols_x64_rel.def
index bbcd7bc..95f773c 100644
--- a/symbols_x64_rel.def
+++ b/symbols_x64_rel.def
@@ -42,11 +42,13 @@
     ??$DivMod@$09@?$BigUnsigned@$03@strings_internal@absl@@AEAAIXZ
     ??$DivMod@$09@?$BigUnsigned@$0FE@@strings_internal@absl@@AEAAIXZ
     ??$EmplaceBack@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBack@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBack@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBack@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBack@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
     ??$EmplaceBack@USubRange@absl@@@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUSubRange@2@$$QEAU32@@Z
     ??$EmplaceBackSlow@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBackSlow@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBackSlow@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBackSlow@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBackSlow@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
@@ -328,6 +330,7 @@
     ?Description@TimeZoneInfo@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Description@TimeZoneLibC@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Destroy@CordRep@cord_internal@absl@@SAXPEAU123@@Z
+    ?Destroy@CordRepCrc@cord_internal@absl@@SAXPEAU123@@Z
     ?Destroy@CordRepRing@cord_internal@absl@@CAXPEAV123@@Z
     ?Destroy@PerThreadSem@synchronization_internal@absl@@CAXPEAUThreadIdentity@base_internal@3@@Z
     ?DestroyContents@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
@@ -370,7 +373,10 @@
     ?Erase@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@PEBU453@0@Z
     ?ErasePayload@Status@absl@@QEAA_NVstring_view@2@@Z
     ?Eval@Condition@absl@@QEBA_NXZ
+    ?ExpectedChecksum@Cord@absl@@QEBA?AV?$optional@I@2@XZ
     ?ExtendTransitions@TimeZoneInfo@cctz@time_internal@absl@@AEAA_NXZ
+    ?ExtractAppendBuffer@CordRepBtree@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAV123@_K@Z
+    ?ExtractAppendBuffer@CordRepConcat@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAU123@_K@Z
     ?ExtractFront@CordRepBtree@cord_internal@absl@@CAPEAUCordRep@23@PEAV123@@Z
     ?FDivDuration@absl@@YANVDuration@1@0@Z
     ?FailedPreconditionError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
@@ -385,6 +391,7 @@
     ?Find@ByChar@absl@@QEBA?AVstring_view@2@V32@_K@Z
     ?Find@ByLength@absl@@QEBA?AVstring_view@2@V32@_K@Z
     ?Find@ByString@absl@@QEBA?AVstring_view@2@V32@_K@Z
+    ?FindFlatStartPiece@InlineRep@Cord@absl@@QEBA?AVstring_view@3@XZ
     ?FindPath@GraphCycles@synchronization_internal@absl@@QEBAHUGraphId@23@0HQEAU423@@Z
     ?FindSlow@CordRepRing@cord_internal@absl@@AEBA?AUPosition@123@I_K@Z
     ?FindTailSlow@CordRepRing@cord_internal@absl@@AEBA?AUPosition@123@I_K@Z
@@ -559,6 +566,7 @@
     ?MultiplyStep@?$BigUnsigned@$0FE@@strings_internal@absl@@AEAAXHPEBIHH@Z
     ?Mutable@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@_K@Z
     ?MutexDelay@synchronization_internal@absl@@YAHHH@Z
+    ?New@CordRepCrc@cord_internal@absl@@SAPEAU123@PEAUCordRep@23@I@Z
     ?New@CordRepFlat@cord_internal@absl@@SAPEAU123@_K@Z
     ?New@CordRepRing@cord_internal@absl@@CAPEAV123@_K0@Z
     ?NewArena@LowLevelAlloc@base_internal@absl@@SAPEAUArena@123@H@Z
@@ -664,6 +672,7 @@
     ?Seek@CordRepBtreeReader@cord_internal@absl@@QEAA?AVstring_view@3@_K@Z
     ?SetCapacityForTesting@CordRepRing@cord_internal@absl@@QEAAX_K@Z
     ?SetCurrentThreadIdentity@base_internal@absl@@YAXPEAUThreadIdentity@12@P6AXPEAX@Z@Z
+    ?SetExpectedChecksum@Cord@absl@@QEAAXI@Z
     ?SetHashtablezEnabled@container_internal@absl@@YAX_N@Z
     ?SetHashtablezMaxSamples@container_internal@absl@@YAXH@Z
     ?SetHashtablezSampleParameter@container_internal@absl@@YAXH@Z
diff --git a/symbols_x64_rel_asan.def b/symbols_x64_rel_asan.def
index 63cccc0..fce67a4 100644
--- a/symbols_x64_rel_asan.def
+++ b/symbols_x64_rel_asan.def
@@ -41,11 +41,13 @@
     ??$DivMod@$09@?$BigUnsigned@$03@strings_internal@absl@@AEAAIXZ
     ??$DivMod@$09@?$BigUnsigned@$0FE@@strings_internal@absl@@AEAAIXZ
     ??$EmplaceBack@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBack@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBack@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBack@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBack@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
     ??$EmplaceBack@USubRange@absl@@@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAAEAUSubRange@2@$$QEAU32@@Z
     ??$EmplaceBackSlow@AEBQEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@AEBQEAU342@@Z
+    ??$EmplaceBackSlow@AEBQEAUCordRepConcat@cord_internal@absl@@@?$Storage@PEAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRepConcat@cord_internal@2@AEBQEAU342@@Z
     ??$EmplaceBackSlow@AEBQEBUCordRep@cord_internal@absl@@@?$Storage@PEBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEBUCordRep@cord_internal@2@AEBQEBU342@@Z
     ??$EmplaceBackSlow@PEAUCordRep@cord_internal@absl@@@?$Storage@PEAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PEAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAPEAUCordRep@cord_internal@2@$$QEAPEAU342@@Z
     ??$EmplaceBackSlow@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAAEAUPayload@status_internal@2@$$QEAU342@@Z
@@ -339,6 +341,7 @@
     ?Description@TimeZoneInfo@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Description@TimeZoneLibC@cctz@time_internal@absl@@UEBA?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Destroy@CordRep@cord_internal@absl@@SAXPEAU123@@Z
+    ?Destroy@CordRepCrc@cord_internal@absl@@SAXPEAU123@@Z
     ?Destroy@CordRepRing@cord_internal@absl@@CAXPEAV123@@Z
     ?Destroy@PerThreadSem@synchronization_internal@absl@@CAXPEAUThreadIdentity@base_internal@3@@Z
     ?DestroyContents@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AEAAXXZ
@@ -381,7 +384,10 @@
     ?Erase@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QEAAPEAUPayload@status_internal@3@PEBU453@0@Z
     ?ErasePayload@Status@absl@@QEAA_NVstring_view@2@@Z
     ?Eval@Condition@absl@@QEBA_NXZ
+    ?ExpectedChecksum@Cord@absl@@QEBA?AV?$optional@I@2@XZ
     ?ExtendTransitions@TimeZoneInfo@cctz@time_internal@absl@@AEAA_NXZ
+    ?ExtractAppendBuffer@CordRepBtree@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAV123@_K@Z
+    ?ExtractAppendBuffer@CordRepConcat@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PEAU123@_K@Z
     ?ExtractFront@CordRepBtree@cord_internal@absl@@CAPEAUCordRep@23@PEAV123@@Z
     ?FDivDuration@absl@@YANVDuration@1@0@Z
     ?FailedPreconditionError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
@@ -572,6 +578,7 @@
     ?MultiplyStep@?$BigUnsigned@$0FE@@strings_internal@absl@@AEAAXHPEBIHH@Z
     ?Mutable@CordRepRing@cord_internal@absl@@CAPEAV123@PEAV123@_K@Z
     ?MutexDelay@synchronization_internal@absl@@YAHHH@Z
+    ?New@CordRepCrc@cord_internal@absl@@SAPEAU123@PEAUCordRep@23@I@Z
     ?New@CordRepFlat@cord_internal@absl@@SAPEAU123@_K@Z
     ?New@CordRepRing@cord_internal@absl@@CAPEAV123@_K0@Z
     ?NewArena@LowLevelAlloc@base_internal@absl@@SAPEAUArena@123@H@Z
@@ -677,6 +684,7 @@
     ?Seek@CordRepBtreeReader@cord_internal@absl@@QEAA?AVstring_view@3@_K@Z
     ?SetCapacityForTesting@CordRepRing@cord_internal@absl@@QEAAX_K@Z
     ?SetCurrentThreadIdentity@base_internal@absl@@YAXPEAUThreadIdentity@12@P6AXPEAX@Z@Z
+    ?SetExpectedChecksum@Cord@absl@@QEAAXI@Z
     ?SetHashtablezEnabled@container_internal@absl@@YAX_N@Z
     ?SetHashtablezMaxSamples@container_internal@absl@@YAXH@Z
     ?SetHashtablezSampleParameter@container_internal@absl@@YAXH@Z
diff --git a/symbols_x86_dbg.def b/symbols_x86_dbg.def
index f715699..229598f 100644
--- a/symbols_x86_dbg.def
+++ b/symbols_x86_dbg.def
@@ -5,6 +5,7 @@
     ??$?0$$CBVFormatArgImpl@str_format_internal@absl@@$$CBV012@@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QAE@V?$initializer_list@VFormatArgImpl@str_format_internal@absl@@@std@@@Z
     ??$?0$$T@?$Storage@PAH$00$0A@@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QA$$T@Z
     ??$?0$$T@?$Storage@PAPAUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QA$$T@Z
+    ??$?0$$T@?$Storage@PAPAUCordRepConcat@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QA$$T@Z
     ??$?0$$T@?$Storage@PAPBUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QA$$T@Z
     ??$?0$$T@?$Storage@PAUPayload@status_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QA$$T@Z
     ??$?0$$T@?$Storage@PAUSubRange@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QA$$T@Z
@@ -49,7 +50,9 @@
     ??$?0$00X@?$unique_ptr@VTimeZoneInfo@cctz@time_internal@absl@@U?$default_delete@VTimeZoneInfo@cctz@time_internal@absl@@@__1@std@@@__1@std@@QAE@PAVTimeZoneInfo@cctz@time_internal@absl@@@Z
     ??$?0$00X@?$unique_ptr@VZoneInfoSource@cctz@time_internal@absl@@U?$default_delete@VZoneInfoSource@cctz@time_internal@absl@@@__1@std@@@__1@std@@QAE@$$T@Z
     ??$?0$00X@?$unique_ptr@VZoneInfoSource@cctz@time_internal@absl@@U?$default_delete@VZoneInfoSource@cctz@time_internal@absl@@@__1@std@@@__1@std@@QAE@PAVZoneInfoSource@cctz@time_internal@absl@@@Z
+    ??$?0AAI$0A@@?$optional@I@absl@@QAE@AAI@Z
     ??$?0AAI@?$Storage@I$0A@$0A@@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@AAI@Z
+    ??$?0AAI@?$optional_data_dtor_base@I$00@optional_internal@absl@@IAE@Uin_place_t@2@AAI@Z
     ??$?0AAIABV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$00@?$CompressedTuple@IV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@container_internal@absl@@QAE@AAIABV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0AAIABV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@?$CompressedTupleImpl@V?$CompressedTuple@IV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@container_internal@absl@@U?$integer_sequence@I$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@AAIABV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0AAPAPBVImpl@time_zone@cctz@time_internal@absl@@V?$__allocator_destructor@V?$allocator@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@@?$__compressed_pair@PAPBVImpl@time_zone@cctz@time_internal@absl@@V?$__allocator_destructor@V?$allocator@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@@__1@std@@QAE@AAPAPBVImpl@time_zone@cctz@time_internal@absl@@$$QAV?$__allocator_destructor@V?$allocator@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@12@@Z
@@ -76,6 +79,9 @@
     ??$?0AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@I$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$$QA$$T@Z
     ??$?0AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@X@?$__compressed_pair_elem@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$00$0A@@__1@std@@QAE@AAV?$allocator@PAUCordRep@cord_internal@absl@@@12@@Z
+    ??$?0AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$$T$00@?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QAE@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QA$$T@Z
+    ??$?0AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@I$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QA$$T@Z
+    ??$?0AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??$?0AAV?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@X@?$__compressed_pair_elem@AAV?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@$00$0A@@__1@std@@QAE@AAV?$allocator@PAVCordzHandle@cord_internal@absl@@@12@@Z
     ??$?0AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$$T$00@?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@absl@@@container_internal@absl@@QAE@AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$$QA$$T@Z
     ??$?0AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$$T@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@absl@@@container_internal@absl@@U?$integer_sequence@I$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$$QA$$T@Z
@@ -173,6 +179,9 @@
     ??$?0V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QAE@$$QAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$$QAH@Z
     ??$?0V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@U?$integer_sequence@I$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$$QAH@Z
+    ??$?0V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
+    ??$?0V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QAE@$$QAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QAH@Z
+    ??$?0V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@I@container_internal@absl@@U?$integer_sequence@I$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$$QAH@Z
     ??$?0V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@?$Storage@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??$?0V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@H$00@?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QAE@$$QAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$$QAH@Z
     ??$?0V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@H@?$CompressedTupleImpl@V?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@U?$integer_sequence@I$0A@$00@3@$00@internal_compressed_tuple@container_internal@absl@@QAE@Uin_place_t@3@$$QAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$$QAH@Z
@@ -269,16 +278,12 @@
     ??$ConstructElements@V?$allocator@H@__1@std@@V?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PAH@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@H@__1@std@@PAHAAV?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PAH@23@@01@I@Z
     ??$ConstructElements@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@V?$CopyValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@1@AAV?$CopyValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@01@I@Z
     ??$ConstructElements@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@1@AAV?$IteratorValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRep@cord_internal@absl@@@23@@01@I@Z
+    ??$ConstructElements@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@1@AAV?$IteratorValueAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@23@@01@I@Z
     ??$ConstructElements@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@1@AAV?$IteratorValueAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPBUCordRep@cord_internal@absl@@@23@@01@I@Z
     ??$ConstructElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PAUPayload@status_internal@1@AAV?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PBUPayload@status_internal@absl@@@01@I@Z
     ??$ConstructElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PAUPayload@status_internal@1@AAV?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PAUPayload@status_internal@absl@@@23@@01@I@Z
     ??$ConstructElements@V?$allocator@USubRange@absl@@@__1@std@@V?$IteratorValueAdapter@V?$allocator@USubRange@absl@@@__1@std@@V?$move_iterator@PAUSubRange@absl@@@23@@inlined_vector_internal@absl@@@inlined_vector_internal@absl@@YAXAAV?$allocator@USubRange@absl@@@__1@std@@PAUSubRange@1@AAV?$IteratorValueAdapter@V?$allocator@USubRange@absl@@@__1@std@@V?$move_iterator@PAUSubRange@absl@@@23@@01@I@Z
     ??$Convert@VFormatArgImpl@str_format_internal@absl@@@FormatArgImplFriend@str_format_internal@absl@@SA_NVFormatArgImpl@12@VFormatConversionSpecImpl@12@PAVFormatSinkImpl@12@@Z
-    ??$DestroyElements@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@YAXAAV?$allocator@H@__1@std@@PAHI@Z
-    ??$DestroyElements@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@1@I@Z
-    ??$DestroyElements@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@1@I@Z
-    ??$DestroyElements@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PAUPayload@status_internal@1@I@Z
-    ??$DestroyElements@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@YAXAAV?$allocator@USubRange@absl@@@__1@std@@PAUSubRange@1@I@Z
     ??$Dispatch@C@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PAX@Z
     ??$Dispatch@D@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PAX@Z
     ??$Dispatch@E@FormatArgImpl@str_format_internal@absl@@CA_NTData@012@VFormatConversionSpecImpl@12@PAX@Z
@@ -305,6 +310,7 @@
     ??$EmplaceBack@ABH@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEAAHABH@Z
     ??$EmplaceBack@ABQAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUCordRep@cord_internal@2@ABQAU342@@Z
     ??$EmplaceBack@ABQAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUCordRep@cord_internal@2@ABQAU342@@Z
+    ??$EmplaceBack@ABQAUCordRepConcat@cord_internal@absl@@@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUCordRepConcat@cord_internal@2@ABQAU342@@Z
     ??$EmplaceBack@ABQBUCordRep@cord_internal@absl@@@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPBUCordRep@cord_internal@2@ABQBU342@@Z
     ??$EmplaceBack@PAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUCordRep@cord_internal@2@$$QAPAU342@@Z
     ??$EmplaceBack@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAUPayload@status_internal@2@$$QAU342@@Z
@@ -312,6 +318,7 @@
     ??$EmplaceBackSlow@ABH@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AAEAAHABH@Z
     ??$EmplaceBackSlow@ABQAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPAUCordRep@cord_internal@2@ABQAU342@@Z
     ??$EmplaceBackSlow@ABQAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPAUCordRep@cord_internal@2@ABQAU342@@Z
+    ??$EmplaceBackSlow@ABQAUCordRepConcat@cord_internal@absl@@@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPAUCordRepConcat@cord_internal@2@ABQAU342@@Z
     ??$EmplaceBackSlow@ABQBUCordRep@cord_internal@absl@@@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPBUCordRep@cord_internal@2@ABQBU342@@Z
     ??$EmplaceBackSlow@PAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPAUCordRep@cord_internal@2@$$QAPAU342@@Z
     ??$EmplaceBackSlow@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAUPayload@status_internal@2@$$QAU342@@Z
@@ -573,6 +580,10 @@
     ??$construct@PAUCordRep@cord_internal@absl@@ABQAU123@X@?$allocator_traits@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@12@PAPAUCordRep@cord_internal@absl@@ABQAU456@@Z
     ??$construct@PAUCordRep@cord_internal@absl@@PAU123@@?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@QAEXPAPAUCordRep@cord_internal@absl@@$$QAPAU345@@Z
     ??$construct@PAUCordRep@cord_internal@absl@@PAU123@X@?$allocator_traits@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@12@PAPAUCordRep@cord_internal@absl@@$$QAPAU456@@Z
+    ??$construct@PAUCordRepConcat@cord_internal@absl@@ABQAU123@@?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@QAEXPAPAUCordRepConcat@cord_internal@absl@@ABQAU345@@Z
+    ??$construct@PAUCordRepConcat@cord_internal@absl@@ABQAU123@X@?$allocator_traits@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@12@PAPAUCordRepConcat@cord_internal@absl@@ABQAU456@@Z
+    ??$construct@PAUCordRepConcat@cord_internal@absl@@PAU123@@?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@QAEXPAPAUCordRepConcat@cord_internal@absl@@$$QAPAU345@@Z
+    ??$construct@PAUCordRepConcat@cord_internal@absl@@PAU123@X@?$allocator_traits@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@12@PAPAUCordRepConcat@cord_internal@absl@@$$QAPAU456@@Z
     ??$construct@PAVCordzHandle@cord_internal@absl@@ABQAV123@@?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@QAEXPAPAVCordzHandle@cord_internal@absl@@ABQAV345@@Z
     ??$construct@PAVCordzHandle@cord_internal@absl@@ABQAV123@X@?$allocator_traits@V?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAVCordzHandle@cord_internal@absl@@@12@PAPAVCordzHandle@cord_internal@absl@@ABQAV456@@Z
     ??$construct@PBUCordRep@cord_internal@absl@@ABQBU123@@?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@QAEXPAPBUCordRep@cord_internal@absl@@ABQBU345@@Z
@@ -637,6 +648,7 @@
     ??$emplace_back@ABH@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QAEAAHABH@Z
     ??$emplace_back@ABQAUCordRep@cord_internal@absl@@@?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@1@ABQAU231@@Z
     ??$emplace_back@ABQAUCordRep@cord_internal@absl@@@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@1@ABQAU231@@Z
+    ??$emplace_back@ABQAUCordRepConcat@cord_internal@absl@@@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRepConcat@cord_internal@1@ABQAU231@@Z
     ??$emplace_back@ABQBUCordRep@cord_internal@absl@@@?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPBUCordRep@cord_internal@1@ABQBU231@@Z
     ??$emplace_back@PAUCordRep@cord_internal@absl@@@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@1@$$QAPAU231@@Z
     ??$emplace_back@UPayload@status_internal@absl@@@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEAAUPayload@status_internal@1@$$QAU231@@Z
@@ -658,6 +670,7 @@
     ??$forward@AAV?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@YAAAV?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@01@AAV201@@Z
     ??$forward@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@YAAAV?$allocator@PAUCordRep@cord_internal@absl@@@01@AAV201@@Z
     ??$forward@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@YAAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@AAV123@@Z
+    ??$forward@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@YAAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@AAV123@@Z
     ??$forward@AAV?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@YAAAV?$allocator@PAVCordzHandle@cord_internal@absl@@@01@AAV201@@Z
     ??$forward@AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@YAAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@AAV123@@Z
     ??$forward@AAV?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@YAAAV?$allocator@PBVCordzHandle@cord_internal@absl@@@01@AAV201@@Z
@@ -670,6 +683,7 @@
     ??$forward@AAVstring_view@absl@@@__1@std@@YAAAVstring_view@absl@@AAV23@@Z
     ??$forward@ABQAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@YAABQAPBVImpl@time_zone@cctz@time_internal@absl@@ABQAPBV23456@@Z
     ??$forward@ABQAUCordRep@cord_internal@absl@@@__1@std@@YAABQAUCordRep@cord_internal@absl@@ABQAU234@@Z
+    ??$forward@ABQAUCordRepConcat@cord_internal@absl@@@__1@std@@YAABQAUCordRepConcat@cord_internal@absl@@ABQAU234@@Z
     ??$forward@ABQAVCordzHandle@cord_internal@absl@@@__1@std@@YAABQAVCordzHandle@cord_internal@absl@@ABQAV234@@Z
     ??$forward@ABQBUCordRep@cord_internal@absl@@@__1@std@@YAABQBUCordRep@cord_internal@absl@@ABQBU234@@Z
     ??$forward@ABQBVCordzHandle@cord_internal@absl@@@__1@std@@YAABQBVCordzHandle@cord_internal@absl@@ABQBV234@@Z
@@ -686,6 +700,7 @@
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     ??$forward@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@YA$$QAPAPBVImpl@time_zone@cctz@time_internal@absl@@AAPAPBV23456@@Z
     ??$forward@PAUCordRep@cord_internal@absl@@@__1@std@@YA$$QAPAUCordRep@cord_internal@absl@@AAPAU234@@Z
+    ??$forward@PAUCordRepConcat@cord_internal@absl@@@__1@std@@YA$$QAPAUCordRepConcat@cord_internal@absl@@AAPAU234@@Z
     ??$forward@PAV?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@@__1@std@@YA$$QAPAV?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@AAPAV23@@Z
     ??$forward@PAVCondVar@absl@@@__1@std@@YA$$QAPAVCondVar@absl@@AAPAV23@@Z
     ??$forward@PAVMutex@absl@@@__1@std@@YA$$QAPAVMutex@absl@@AAPAV23@@Z
@@ -704,6 +719,7 @@
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     ??$forward@V?$allocator@H@__1@std@@@absl@@YA$$QAV?$allocator@H@__1@std@@AAV123@@Z
     ??$forward@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@YA$$QAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@AAV123@@Z
+    ??$forward@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@YA$$QAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@AAV123@@Z
     ??$forward@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@YA$$QAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@AAV123@@Z
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@@ -717,6 +733,9 @@
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     ??$get@$00@?$CompressedTuple@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGBEABIXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@absl@@@container_internal@absl@@QGAEAAPAPAUCordRep@cord_internal@2@XZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGAEAAIXZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGBEABIXZ
+    ??$get@$00@?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QGAEAAPAPAUCordRepConcat@cord_internal@2@XZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGAEAAIXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGBEABIXZ
     ??$get@$00@?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@absl@@@container_internal@absl@@QGAEAAPAPBUCordRep@cord_internal@2@XZ
@@ -732,6 +751,8 @@
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     ??$get@$0A@@?$CompressedTuple@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGAEAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@absl@@@container_internal@absl@@QGAEAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ??$get@$0A@@?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGAEAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
+    ??$get@$0A@@?$CompressedTuple@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@absl@@@container_internal@absl@@QGAEAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@I@container_internal@absl@@QGAEAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@absl@@@container_internal@absl@@QGAEAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ??$get@$0A@@?$CompressedTuple@V?$allocator@UPayload@status_internal@absl@@@__1@std@@I@container_internal@absl@@QGAEAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -749,6 +770,7 @@
     ??$max_size@V?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SAIABV?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@X@?$allocator_traits@V?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SAIABV?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@12@@Z
     ??$max_size@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAIABV?$allocator@PAUCordRep@cord_internal@absl@@@12@@Z
+    ??$max_size@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAIABV?$allocator@PAUCordRepConcat@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAIABV?$allocator@PAVCordzHandle@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAIABV?$allocator@PBUCordRep@cord_internal@absl@@@12@@Z
     ??$max_size@V?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@X@?$allocator_traits@V?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAIABV?$allocator@PBVCordzHandle@cord_internal@absl@@@12@@Z
@@ -782,6 +804,7 @@
     ??$move@AAUViableSubstitution@strings_internal@absl@@@__1@std@@YA$$QAUViableSubstitution@strings_internal@absl@@AAU234@@Z
     ??$move@AAV?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QAV?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AAV234@@Z
     ??$move@AAV?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QAV?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAV234@@Z
+    ??$move@AAV?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QAV?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAV234@@Z
     ??$move@AAV?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QAV?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAV234@@Z
     ??$move@AAV?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QAV?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAV234@@Z
     ??$move@AAV?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@@__1@std@@YA$$QAV?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@AAV234@@Z
@@ -813,6 +836,7 @@
     ??$upper_bound@PBUTransition@cctz@time_internal@absl@@U1234@UByUnixTime@1234@@__1@std@@YAPBUTransition@cctz@time_internal@absl@@PBU2345@0ABU2345@UByUnixTime@2345@@Z
     ??0?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAE@AAV?$allocator@H@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@AAV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
     ??0?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@AAV?$allocator@USubRange@absl@@@__1@std@@@Z
@@ -829,6 +853,7 @@
     ??0?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
     ??0?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAE@IABQAUCordRep@cord_internal@1@ABV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
+    ??0?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
     ??0?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
     ??0?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAE@ABV01@@Z
     ??0?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAE@ABV01@ABV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
@@ -836,6 +861,7 @@
     ??0?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QAE@XZ
     ??0?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PAH@23@@inlined_vector_internal@absl@@QAE@ABV?$move_iterator@PAH@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QAE@ABV?$move_iterator@PAPAUCordRep@cord_internal@absl@@@__1@std@@@Z
+    ??0?$IteratorValueAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QAE@ABV?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QAE@ABV?$move_iterator@PAPBUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@QAE@ABQBUPayload@status_internal@2@@Z
     ??0?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@QAE@ABV?$move_iterator@PAUPayload@status_internal@absl@@@__1@std@@@Z
@@ -859,6 +885,7 @@
     ??0?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??0?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@ABV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@Z
     ??0?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
+    ??0?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??0?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??0?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@ABV?$allocator@UPayload@status_internal@absl@@@__1@std@@@Z
     ??0?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
@@ -932,6 +959,7 @@
     ??0?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QAE@XZ
     ??0?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@QAE@XZ
     ??0?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@QAE@XZ
+    ??0?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@QAE@XZ
     ??0?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@QAE@XZ
     ??0?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@QAE@XZ
     ??0?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@QAE@XZ
@@ -978,17 +1006,22 @@
     ??0?$deque@PBVImpl@time_zone@cctz@time_internal@absl@@V?$allocator@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@QAE@XZ
     ??0?$move_iterator@PAPAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QAE@PAPAPBVImpl@time_zone@cctz@time_internal@absl@@@Z
     ??0?$move_iterator@PAPAUCordRep@cord_internal@absl@@@__1@std@@QAE@PAPAUCordRep@cord_internal@absl@@@Z
+    ??0?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@__1@std@@QAE@PAPAUCordRepConcat@cord_internal@absl@@@Z
     ??0?$move_iterator@PAPBUCordRep@cord_internal@absl@@@__1@std@@QAE@PAPBUCordRep@cord_internal@absl@@@Z
     ??0?$move_iterator@PAUPayload@status_internal@absl@@@__1@std@@QAE@PAUPayload@status_internal@absl@@@Z
     ??0?$move_iterator@PAUSubRange@absl@@@__1@std@@QAE@PAUSubRange@absl@@@Z
     ??0?$move_iterator@PAUTransition@cctz@time_internal@absl@@@__1@std@@QAE@PAUTransition@cctz@time_internal@absl@@@Z
     ??0?$move_iterator@PAUTransitionType@cctz@time_internal@absl@@@__1@std@@QAE@PAUTransitionType@cctz@time_internal@absl@@@Z
+    ??0?$optional@I@absl@@QAE@Unullopt_t@1@@Z
     ??0?$optional@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@absl@@QAE@XZ
     ??0?$optional@VCord@absl@@@absl@@QAE@Unullopt_t@1@@Z
+    ??0?$optional_data@I$00@optional_internal@absl@@QAE@XZ
     ??0?$optional_data@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@$0A@@optional_internal@absl@@IAE@XZ
     ??0?$optional_data@VCord@absl@@$0A@@optional_internal@absl@@IAE@XZ
+    ??0?$optional_data_base@I@optional_internal@absl@@QAE@XZ
     ??0?$optional_data_base@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@optional_internal@absl@@QAE@XZ
     ??0?$optional_data_base@VCord@absl@@@optional_internal@absl@@QAE@XZ
+    ??0?$optional_data_dtor_base@I$00@optional_internal@absl@@IAE@XZ
     ??0?$optional_data_dtor_base@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@$0A@@optional_internal@absl@@IAE@XZ
     ??0?$optional_data_dtor_base@VCord@absl@@$0A@@optional_internal@absl@@IAE@XZ
     ??0?$probe_seq@$0BA@@container_internal@absl@@QAE@II@Z
@@ -1041,6 +1074,7 @@
     ??0CordRepBtreeNavigator@cord_internal@absl@@QAE@XZ
     ??0CordRepBtreeReader@cord_internal@absl@@QAE@XZ
     ??0CordRepConcat@cord_internal@absl@@QAE@XZ
+    ??0CordRepCrc@cord_internal@absl@@QAE@XZ
     ??0CordRepExternal@cord_internal@absl@@QAE@XZ
     ??0CordRepFlat@cord_internal@absl@@QAE@XZ
     ??0CordRepRing@cord_internal@absl@@AAE@I@Z
@@ -1152,6 +1186,7 @@
     ??0uint128@absl@@QAE@_K@Z
     ??1?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
+    ??1?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
@@ -1159,6 +1194,7 @@
     ??1?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QAE@XZ
     ??1?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
     ??1?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
+    ??1?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
     ??1?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAE@XZ
     ??1?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAE@XZ
     ??1?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QAE@XZ
@@ -1166,6 +1202,7 @@
     ??1?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
+    ??1?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
     ??1?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE@XZ
@@ -1364,6 +1401,7 @@
     ??D?$__wrap_iter@PBUConversionItem@ParsedFormatBase@str_format_internal@absl@@@__1@std@@QBEABUConversionItem@ParsedFormatBase@str_format_internal@absl@@XZ
     ??D?$move_iterator@PAPAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QBE$$QAPAPBVImpl@time_zone@cctz@time_internal@absl@@XZ
     ??D?$move_iterator@PAPAUCordRep@cord_internal@absl@@@__1@std@@QBE$$QAPAUCordRep@cord_internal@absl@@XZ
+    ??D?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@__1@std@@QBE$$QAPAUCordRepConcat@cord_internal@absl@@XZ
     ??D?$move_iterator@PAPBUCordRep@cord_internal@absl@@@__1@std@@QBE$$QAPBUCordRep@cord_internal@absl@@XZ
     ??D?$move_iterator@PAUPayload@status_internal@absl@@@__1@std@@QBE$$QAUPayload@status_internal@absl@@XZ
     ??D?$move_iterator@PAUSubRange@absl@@@__1@std@@QBE$$QAUSubRange@absl@@XZ
@@ -1381,6 +1419,7 @@
     ??E?$__wrap_iter@PBUConversionItem@ParsedFormatBase@str_format_internal@absl@@@__1@std@@QAEAAV012@XZ
     ??E?$move_iterator@PAPAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QAEAAV012@XZ
     ??E?$move_iterator@PAPAUCordRep@cord_internal@absl@@@__1@std@@QAEAAV012@XZ
+    ??E?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@__1@std@@QAEAAV012@XZ
     ??E?$move_iterator@PAPBUCordRep@cord_internal@absl@@@__1@std@@QAEAAV012@XZ
     ??E?$move_iterator@PAUPayload@status_internal@absl@@@__1@std@@QAEAAV012@XZ
     ??E?$move_iterator@PAUSubRange@absl@@@__1@std@@QAEAAV012@XZ
@@ -1429,6 +1468,7 @@
     ??R<lambda_1>@?0???$AddRing@$0A@@CordRepRing@cord_internal@absl@@CAPAV123@PAV123@0II@Z@QBE?A?<auto>@@I@Z
     ??R<lambda_1>@?0???$Fill@$00@CordRepRing@cord_internal@absl@@AAEXPBV123@II@Z@QBE?A?<auto>@@I@Z
     ??R<lambda_1>@?0???$Fill@$0A@@CordRepRing@cord_internal@absl@@AAEXPBV123@II@Z@QBE?A?<auto>@@I@Z
+    ??R<lambda_1>@?0???$Initialize@V?$CopyValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXV?$CopyValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@I@Z@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$FixedArray@PAUCordRep@cord_internal@absl@@$0PPPPPPPP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@2@I@Z@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@2@I@Z@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0???A?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEAAUPayload@status_internal@2@I@Z@QBE?A?<auto>@@XZ
@@ -1444,9 +1484,17 @@
     ??R<lambda_1>@?0??CheckLengthInternal@string_view@absl@@CAII@Z@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0??CompareSlowPath@Cord@absl@@ABEHABV23@II@Z@QBE?A?<auto>@@PAVChunkIterator@23@PAVstring_view@3@@Z
     ??R<lambda_1>@?0??CompareSlowPath@Cord@absl@@ABEHVstring_view@3@II@Z@QBE?A?<auto>@@PAVChunkIterator@23@PAV43@@Z
+    ??R<lambda_1>@?0??InitFrom@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXABV234@@Z@QBE?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z@QBE?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z@QBE?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z@QBE?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z@QBE?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z@QBE?A?<auto>@@XZ
+    ??R<lambda_1>@?0??SubtractSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QAEAAHXZ@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@3@XZ@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@3@XZ@QBE?A?<auto>@@XZ
+    ??R<lambda_1>@?0??back@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRepConcat@cord_internal@3@XZ@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPBUCordRep@cord_internal@3@XZ@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0??back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QAEAAUSubRange@3@XZ@QBE?A?<auto>@@XZ
     ??R<lambda_1>@?0??erase@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEPAUPayload@status_internal@3@PBU453@@Z@QBE?A?<auto>@@XZ
@@ -1461,6 +1509,7 @@
     ??R<lambda_1>@?0??set_inline_size@InlineData@cord_internal@absl@@QAEXI@Z@QBE?A?<auto>@@XZ
     ??R<lambda_2>@?0???$AddRing@$00@CordRepRing@cord_internal@absl@@CAPAV123@PAV123@0II@Z@QBE?A?<auto>@@I@Z
     ??R<lambda_2>@?0???$AddRing@$0A@@CordRepRing@cord_internal@absl@@CAPAV123@PAV123@0II@Z@QBE?A?<auto>@@I@Z
+    ??R<lambda_2>@?0???$Initialize@V?$CopyValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXV?$CopyValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@I@Z@QBE?A?<auto>@@XZ
     ??R<lambda_2>@?0??erase@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEPAUPayload@status_internal@3@PBU453@@Z@QBE?A?<auto>@@XZ
     ??R?$FunctionRef@$$A6AXPAUCordRep@cord_internal@absl@@II@Z@absl@@QBEXPAUCordRep@cord_internal@1@II@Z
     ??R?$FunctionRef@$$A6AXV?$Span@I@absl@@@Z@absl@@QBEXV?$Span@I@1@@Z
@@ -1523,6 +1572,7 @@
     ?AddSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z
     ?AddSize@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z
     ?AddSize@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z
+    ?AddSize@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z
     ?AddSize@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z
     ?AddSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z
     ?AddSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXI@Z
@@ -1546,11 +1596,13 @@
     ?AllocWithArena@LowLevelAlloc@base_internal@absl@@SAPAXIPAUArena@123@@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEPAHI@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRep@cord_internal@3@I@Z
+    ?Allocate@?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRepConcat@cord_internal@3@I@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPBUCordRep@cord_internal@3@I@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAUPayload@status_internal@3@I@Z
     ?Allocate@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAUSubRange@3@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@H@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@H@__1@std@@@23@AAV?$allocator@H@__1@std@@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@I@Z
+    ?Allocate@?$MallocAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@23@AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@AAV?$allocator@UPayload@status_internal@absl@@@__1@std@@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@AAV?$allocator@USubRange@absl@@@__1@std@@I@Z
@@ -1652,6 +1704,7 @@
     ?ConstructNext@?$CopyValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@H@__1@std@@V?$move_iterator@PAH@23@@inlined_vector_internal@absl@@QAEXAAV?$allocator@H@__1@std@@PAH@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QAEXAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@3@@Z
+    ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPAUCordRepConcat@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QAEXAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@V?$move_iterator@PAPBUCordRep@cord_internal@absl@@@23@@inlined_vector_internal@absl@@QAEXAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@PBUPayload@status_internal@absl@@@inlined_vector_internal@absl@@QAEXAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PAUPayload@status_internal@3@@Z
     ?ConstructNext@?$IteratorValueAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@V?$move_iterator@PAUPayload@status_internal@absl@@@23@@inlined_vector_internal@absl@@QAEXAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PAUPayload@status_internal@3@@Z
@@ -1697,12 +1750,14 @@
     ?DeadlineExceededError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@H@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAAV?$allocator@H@__1@std@@PAHI@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@3@I@Z
+    ?Deallocate@?$MallocAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@3@I@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@3@I@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PAUPayload@status_internal@3@I@Z
     ?Deallocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAAV?$allocator@USubRange@absl@@@__1@std@@PAUSubRange@3@I@Z
     ?DeallocateIfAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?DeallocateIfAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?DeallocateIfAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
+    ?DeallocateIfAllocated@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?DeallocateIfAllocated@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?DeallocateIfAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?DeallocateIfAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
@@ -1725,10 +1780,17 @@
     ?Description@TimeZoneLibC@cctz@time_internal@absl@@UBE?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Destroy@CordRep@cord_internal@absl@@SAXPAU123@@Z
     ?Destroy@CordRepBtree@cord_internal@absl@@SAXPAV123@@Z
+    ?Destroy@CordRepCrc@cord_internal@absl@@SAXPAU123@@Z
     ?Destroy@CordRepRing@cord_internal@absl@@CAXPAV123@@Z
     ?Destroy@PerThreadSem@synchronization_internal@absl@@CAXPAUThreadIdentity@base_internal@3@@Z
     ?DestroyContents@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
     ?DestroyCordSlow@Cord@absl@@AAEXXZ
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@H@__1@std@@$00@inlined_vector_internal@absl@@SAXAAV?$allocator@H@__1@std@@PAHI@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@PAPAUCordRep@cord_internal@3@I@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@PAPAUCordRepConcat@cord_internal@3@I@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@PAPBUCordRep@cord_internal@3@I@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SAXAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@PAUPayload@status_internal@3@I@Z
+    ?DestroyElements@?$DestroyAdapter@V?$allocator@USubRange@absl@@@__1@std@@$00@inlined_vector_internal@absl@@SAXAAV?$allocator@USubRange@absl@@@__1@std@@PAUSubRange@3@I@Z
     ?DestroyLeaf@CordRepBtree@cord_internal@absl@@CAXPAV123@II@Z
     ?DestroyNonLeaf@CordRepBtree@cord_internal@absl@@CAXPAV123@II@Z
     ?DestroyTree@CordRepBtree@cord_internal@absl@@CAXPAV123@II@Z
@@ -1737,6 +1799,7 @@
     ?DiagnosticsHandleIsSafeToInspect@CordzHandle@cord_internal@absl@@QBE_NPBV123@@Z
     ?DidAllocate@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAE_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE_NXZ
+    ?DidAllocate@?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE_NXZ
     ?DidAllocate@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE_NXZ
@@ -1804,7 +1867,10 @@
     ?ErasePayload@Status@absl@@QAE_NVstring_view@2@@Z
     ?Eval@Condition@absl@@QBE_NXZ
     ?Excess@str_format_internal@absl@@YAIII@Z
+    ?ExpectedChecksum@Cord@absl@@QBE?AV?$optional@I@2@XZ
     ?ExtendTransitions@TimeZoneInfo@cctz@time_internal@absl@@AAE_NXZ
+    ?ExtractAppendBuffer@CordRepBtree@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PAV123@I@Z
+    ?ExtractAppendBuffer@CordRepConcat@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PAU123@I@Z
     ?ExtractFront@CordRepBtree@cord_internal@absl@@CAPAUCordRep@23@PAV123@@Z
     ?FDivDuration@absl@@YANVDuration@1@0@Z
     ?FailedPreconditionError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
@@ -1900,24 +1966,28 @@
     ?GetAllocatedCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetAllocatedCapacity@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetAllocatedCapacity@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
+    ?GetAllocatedCapacity@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetAllocatedCapacity@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetAllocatedCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetAllocatedCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetAllocatedData@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEPAHXZ
     ?GetAllocatedData@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRep@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRep@cord_internal@3@XZ
+    ?GetAllocatedData@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRepConcat@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPBUCordRep@cord_internal@3@XZ
     ?GetAllocatedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAUPayload@status_internal@3@XZ
     ?GetAllocatedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEPBUPayload@status_internal@3@XZ
     ?GetAllocatedData@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAUSubRange@3@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@H@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?GetAllocator@?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@USubRange@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@H@__1@std@@XZ
     ?GetAllocator@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?GetAllocator@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?GetAllocator@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEABV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -1928,6 +1998,7 @@
     ?GetCachedTID@base_internal@absl@@YAIXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
+    ?GetCapacity@?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
     ?GetCapacity@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
@@ -1938,6 +2009,7 @@
     ?GetCurrentTimeNanos@absl@@YA_JXZ
     ?GetData@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEAAPAHXZ
     ?GetData@?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAPAUCordRep@cord_internal@3@XZ
+    ?GetData@?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAPAUCordRepConcat@cord_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAPBUCordRep@cord_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUPayload@status_internal@3@XZ
     ?GetData@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUSubRange@3@XZ
@@ -1948,12 +2020,14 @@
     ?GetInlinedCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetInlinedCapacity@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetInlinedCapacity@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
+    ?GetInlinedCapacity@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetInlinedCapacity@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetInlinedCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetInlinedCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetInlinedData@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEPAHXZ
     ?GetInlinedData@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRep@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRep@cord_internal@3@XZ
+    ?GetInlinedData@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPAUCordRepConcat@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAPBUCordRep@cord_internal@3@XZ
     ?GetInlinedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAUPayload@status_internal@3@XZ
     ?GetInlinedData@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEPBUPayload@status_internal@3@XZ
@@ -1961,6 +2035,7 @@
     ?GetIsAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QBE_NXZ
     ?GetIsAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBE_NXZ
     ?GetIsAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBE_NXZ
+    ?GetIsAllocated@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBE_NXZ
     ?GetIsAllocated@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBE_NXZ
     ?GetIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBE_NXZ
     ?GetIsAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QBE_NXZ
@@ -1980,6 +2055,7 @@
     ?GetSize@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetSize@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetSize@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
+    ?GetSize@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetSize@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetSize@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
     ?GetSize@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEIXZ
@@ -1989,6 +2065,8 @@
     ?GetSizeAndIsAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEABIXZ
     ?GetSizeAndIsAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
     ?GetSizeAndIsAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEABIXZ
+    ?GetSizeAndIsAllocated@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
+    ?GetSizeAndIsAllocated@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEABIXZ
     ?GetSizeAndIsAllocated@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
     ?GetSizeAndIsAllocated@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QBEABIXZ
     ?GetSizeAndIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAIXZ
@@ -2067,6 +2145,7 @@
     ?IsCancelled@absl@@YA_NABVStatus@1@@Z
     ?IsConcat@CordRep@cord_internal@absl@@QBE_NXZ
     ?IsCooperative@SpinLock@base_internal@absl@@CA_NW4SchedulingMode@23@@Z
+    ?IsCrc@CordRep@cord_internal@absl@@QBE_NXZ
     ?IsDataEdge@CordRepBtree@cord_internal@absl@@SA_NPBUCordRep@23@@Z
     ?IsDataLoss@absl@@YA_NABVStatus@1@@Z
     ?IsDeadlineExceeded@absl@@YA_NABVStatus@1@@Z
@@ -2082,7 +2161,6 @@
     ?IsInternal@absl@@YA_NABVStatus@1@@Z
     ?IsInvalidArgument@absl@@YA_NABVStatus@1@@Z
     ?IsMovedFrom@Status@absl@@CA_NI@Z
-    ?IsMutable@RefcountAndFlags@cord_internal@absl@@QAE_NXZ
     ?IsNotFound@absl@@YA_NABVStatus@1@@Z
     ?IsOne@RefcountAndFlags@cord_internal@absl@@QAE_NXZ
     ?IsOutOfRange@absl@@YA_NABVStatus@1@@Z
@@ -2138,6 +2216,7 @@
     ?MakeStorageView@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAE?AU?$StorageView@V?$allocator@H@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE?AU?$StorageView@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE?AU?$StorageView@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
+    ?MakeStorageView@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE?AU?$StorageView@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE?AU?$StorageView@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE?AU?$StorageView@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@XZ
     ?MakeStorageView@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAE?AU?$StorageView@V?$allocator@USubRange@absl@@@__1@std@@@23@XZ
@@ -2175,6 +2254,7 @@
     ?New@CordRepBtree@cord_internal@absl@@SAPAV123@H@Z
     ?New@CordRepBtree@cord_internal@absl@@SAPAV123@PAUCordRep@23@@Z
     ?New@CordRepBtree@cord_internal@absl@@SAPAV123@PAV123@0@Z
+    ?New@CordRepCrc@cord_internal@absl@@SAPAU123@PAUCordRep@23@I@Z
     ?New@CordRepFlat@cord_internal@absl@@SAPAU123@I@Z
     ?New@CordRepRing@cord_internal@absl@@CAPAV123@II@Z
     ?NewArena@LowLevelAlloc@base_internal@absl@@SAPAUArena@123@H@Z
@@ -2184,6 +2264,7 @@
     ?NextCapacity@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@SAII@Z
     ?NextCapacity@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SAII@Z
     ?NextCapacity@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SAII@Z
+    ?NextCapacity@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SAII@Z
     ?NextCapacity@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SAII@Z
     ?NextCapacity@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@SAII@Z
     ?NextCapacity@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@SAII@Z
@@ -2297,12 +2378,14 @@
     ?RegisterSymbolizer@absl@@YAXP6A_NPBXPADH@Z@Z
     ?Release@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QHAE?AU?$Allocation@V?$allocator@H@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QHAE?AU?$Allocation@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
+    ?Release@?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QHAE?AU?$Allocation@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QHAE?AU?$Allocation@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QHAE?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@XZ
     ?Release@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QHAE?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@XZ
     ?Release@ReleasableMutexLock@absl@@QAEXXZ
     ?Remove@CondVar@absl@@AAEXPAUPerThreadSynch@base_internal@2@@Z
     ?RemoveChunkPrefix@ChunkIterator@Cord@absl@@AAEXI@Z
+    ?RemoveCrcNode@cord_internal@absl@@YAPAUCordRep@12@PAU312@@Z
     ?RemoveEdge@GraphCycles@synchronization_internal@absl@@QAEXUGraphId@23@0@Z
     ?RemoveExtraAsciiWhitespace@absl@@YAXPAV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@@Z
     ?RemoveNode@GraphCycles@synchronization_internal@absl@@QAEXPAX@Z
@@ -2314,6 +2397,7 @@
     ?RepToPointer@Status@absl@@CAPAUStatusRep@status_internal@2@I@Z
     ?Reset@?$AllocationTransaction@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
+    ?Reset@?$AllocationTransaction@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
     ?Reset@?$AllocationTransaction@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
@@ -2333,6 +2417,7 @@
     ?SetAllocation@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEXU?$Allocation@V?$allocator@H@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXU?$Allocation@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXU?$Allocation@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
+    ?SetAllocation@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXU?$Allocation@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXU?$Allocation@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@@Z
     ?SetAllocation@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@@Z
@@ -2341,6 +2426,7 @@
     ?SetCordRep@CordzInfo@cord_internal@absl@@QAEXPAUCordRep@23@@Z
     ?SetCordRep@CordzUpdateScope@cord_internal@absl@@QBEXPAUCordRep@23@@Z
     ?SetCurrentThreadIdentity@base_internal@absl@@YAXPAUThreadIdentity@12@P6AXPAX@Z@Z
+    ?SetExpectedChecksum@Cord@absl@@QAEXI@Z
     ?SetFlags@FormatConversionSpecImplFriend@str_format_internal@absl@@SAXW4Flags@23@PAVFormatConversionSpecImpl@23@@Z
     ?SetHashtablezEnabled@container_internal@absl@@YAX_N@Z
     ?SetHashtablezMaxSamples@container_internal@absl@@YAXH@Z
@@ -2348,6 +2434,7 @@
     ?SetIsAllocated@?$Storage@H$0CP@V?$allocator@H@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?SetIsAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?SetIsAllocated@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
+    ?SetIsAllocated@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?SetIsAllocated@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?SetIsAllocated@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
     ?SetIsAllocated@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEXXZ
@@ -2379,6 +2466,8 @@
     ?SizeofCordRepExternal@CordTestAccess@strings_internal@absl@@SAIXZ
     ?SizeofCordRepSubstring@CordTestAccess@strings_internal@absl@@SAIXZ
     ?Skip@CordRepBtreeNavigator@cord_internal@absl@@QAE?AUPosition@123@I@Z
+    ?SkipCrcNode@cord_internal@absl@@YAPAUCordRep@12@PAU312@@Z
+    ?SkipCrcNode@cord_internal@absl@@YAPBUCordRep@12@PBU312@@Z
     ?SleepFor@absl@@YAXVDuration@1@@Z
     ?SlowLock@SpinLock@base_internal@absl@@AAEXXZ
     ?SlowUnlock@SpinLock@base_internal@absl@@AAEXI@Z
@@ -2871,6 +2960,7 @@
     ?allocate@?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QAEPAPAPBVImpl@time_zone@cctz@time_internal@absl@@I@Z
     ?allocate@?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@QAEPAPAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@23@I@Z
     ?allocate@?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@QAEPAPAUCordRep@cord_internal@absl@@I@Z
+    ?allocate@?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@QAEPAPAUCordRepConcat@cord_internal@absl@@I@Z
     ?allocate@?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@QAEPAPAVCordzHandle@cord_internal@absl@@I@Z
     ?allocate@?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@QAEPAPBUCordRep@cord_internal@absl@@I@Z
     ?allocate@?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@QAEPAPBVCordzHandle@cord_internal@absl@@I@Z
@@ -2886,6 +2976,7 @@
     ?allocate@?$allocator_traits@V?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SAPAPAPBVImpl@time_zone@cctz@time_internal@absl@@AAV?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@23@I@Z
     ?allocate@?$allocator_traits@V?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SAPAPAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@23@AAV?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@23@I@Z
     ?allocate@?$allocator_traits@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAPAPAUCordRep@cord_internal@absl@@AAV?$allocator@PAUCordRep@cord_internal@absl@@@23@I@Z
+    ?allocate@?$allocator_traits@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAPAPAUCordRepConcat@cord_internal@absl@@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@23@I@Z
     ?allocate@?$allocator_traits@V?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAPAPAVCordzHandle@cord_internal@absl@@AAV?$allocator@PAVCordzHandle@cord_internal@absl@@@23@I@Z
     ?allocate@?$allocator_traits@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAPAPBUCordRep@cord_internal@absl@@AAV?$allocator@PBUCordRep@cord_internal@absl@@@23@I@Z
     ?allocate@?$allocator_traits@V?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAPAPBVCordzHandle@cord_internal@absl@@AAV?$allocator@PBVCordzHandle@cord_internal@absl@@@23@I@Z
@@ -2915,6 +3006,7 @@
     ?back@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QAEAAHXZ
     ?back@?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@2@XZ
     ?back@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRep@cord_internal@2@XZ
+    ?back@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAEAAPAUCordRepConcat@cord_internal@2@XZ
     ?back@?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEAAPBUCordRep@cord_internal@2@XZ
     ?back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QAEAAUSubRange@2@XZ
     ?back@?$vector@PAUCordRep@cord_internal@absl@@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@QAEAAPAUCordRep@cord_internal@absl@@XZ
@@ -2933,6 +3025,7 @@
     ?base@?$move_iterator@PAUTransition@cctz@time_internal@absl@@@__1@std@@QBEPAUTransition@cctz@time_internal@absl@@XZ
     ?base@?$move_iterator@PAUTransitionType@cctz@time_internal@absl@@@__1@std@@QBEPAUTransitionType@cctz@time_internal@absl@@XZ
     ?begin@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRep@cord_internal@2@XZ
+    ?begin@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRepConcat@cord_internal@2@XZ
     ?begin@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEPAUPayload@status_internal@2@XZ
     ?begin@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QBEPBUPayload@status_internal@2@XZ
     ?begin@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QBEPBVFormatArgImpl@str_format_internal@2@XZ
@@ -3018,10 +3111,13 @@
     ?cordz_info@InlineRep@Cord@absl@@QBEPAVCordzInfo@cord_internal@3@XZ
     ?cordz_should_profile@cord_internal@absl@@YA_NXZ
     ?count@FILERawSink@str_format_internal@absl@@QBEIXZ
+    ?crc@CordRep@cord_internal@absl@@QAEPAUCordRepCrc@23@XZ
+    ?crc@CordRep@cord_internal@absl@@QBEPBUCordRepCrc@23@XZ
     ?data@?$FixedArray@PAUCordRep@cord_internal@absl@@$0PPPPPPPP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QAEPAHXZ
     ?data@?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRep@cord_internal@2@XZ
+    ?data@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRepConcat@cord_internal@2@XZ
     ?data@?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEPAPBUCordRep@cord_internal@2@XZ
     ?data@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEPAUPayload@status_internal@2@XZ
     ?data@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QBEPBUPayload@status_internal@2@XZ
@@ -3054,6 +3150,7 @@
     ?deallocate@?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QAEXPAPAPBVImpl@time_zone@cctz@time_internal@absl@@I@Z
     ?deallocate@?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@QAEXPAPAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@23@I@Z
     ?deallocate@?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@QAEXPAPAUCordRep@cord_internal@absl@@I@Z
+    ?deallocate@?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@QAEXPAPAUCordRepConcat@cord_internal@absl@@I@Z
     ?deallocate@?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@QAEXPAPAVCordzHandle@cord_internal@absl@@I@Z
     ?deallocate@?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@QAEXPAPBUCordRep@cord_internal@absl@@I@Z
     ?deallocate@?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@QAEXPAPBVCordzHandle@cord_internal@absl@@I@Z
@@ -3069,6 +3166,7 @@
     ?deallocate@?$allocator_traits@V?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@23@PAPAPBVImpl@time_zone@cctz@time_internal@absl@@I@Z
     ?deallocate@?$allocator_traits@V?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@23@PAPAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@23@I@Z
     ?deallocate@?$allocator_traits@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAUCordRep@cord_internal@absl@@@23@PAPAUCordRep@cord_internal@absl@@I@Z
+    ?deallocate@?$allocator_traits@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@23@PAPAUCordRepConcat@cord_internal@absl@@I@Z
     ?deallocate@?$allocator_traits@V?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PAVCordzHandle@cord_internal@absl@@@23@PAPAVCordzHandle@cord_internal@absl@@I@Z
     ?deallocate@?$allocator_traits@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PBUCordRep@cord_internal@absl@@@23@PAPBUCordRep@cord_internal@absl@@I@Z
     ?deallocate@?$allocator_traits@V?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@@__1@std@@SAXAAV?$allocator@PBVCordzHandle@cord_internal@absl@@@23@PAPBVCordzHandle@cord_internal@absl@@I@Z
@@ -3104,6 +3202,7 @@
     ?empty@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QBE_NXZ
     ?empty@?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QBE_NXZ
     ?empty@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QBE_NXZ
+    ?empty@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QBE_NXZ
     ?empty@?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QBE_NXZ
     ?empty@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QBE_NXZ
     ?empty@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QBE_NXZ
@@ -3117,6 +3216,7 @@
     ?empty@InlineRep@Cord@absl@@QBE_NXZ
     ?empty@string_view@absl@@QBE_NXZ
     ?end@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRep@cord_internal@2@XZ
+    ?end@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAEPAPAUCordRepConcat@cord_internal@2@XZ
     ?end@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEPAUPayload@status_internal@2@XZ
     ?end@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QBEPBUPayload@status_internal@2@XZ
     ?end@?$Span@$$CBVFormatArgImpl@str_format_internal@absl@@@absl@@QBEPBVFormatArgImpl@str_format_internal@2@XZ
@@ -3239,12 +3339,14 @@
     ?get@?$Storage@I$0A@$0A@@internal_compressed_tuple@container_internal@absl@@QGBEABIXZ
     ?get@?$Storage@PAH$00$0A@@internal_compressed_tuple@container_internal@absl@@QGAEAAPAHXZ
     ?get@?$Storage@PAPAUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QGAEAAPAPAUCordRep@cord_internal@4@XZ
+    ?get@?$Storage@PAPAUCordRepConcat@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QGAEAAPAPAUCordRepConcat@cord_internal@4@XZ
     ?get@?$Storage@PAPBUCordRep@cord_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QGAEAAPAPBUCordRep@cord_internal@4@XZ
     ?get@?$Storage@PAUPayload@status_internal@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QGAEAAPAUPayload@status_internal@4@XZ
     ?get@?$Storage@PAUSubRange@absl@@$00$0A@@internal_compressed_tuple@container_internal@absl@@QGAEAAPAUSubRange@4@XZ
     ?get@?$Storage@V?$allocator@H@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QGAEAAV?$allocator@H@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$00$00@internal_compressed_tuple@container_internal@absl@@QGAEAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QGAEAAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@XZ
+    ?get@?$Storage@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QGAEAAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QGAEAAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QGAEAAV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
     ?get@?$Storage@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@$00@internal_compressed_tuple@container_internal@absl@@QGBEABV?$allocator@UPayload@status_internal@absl@@@__1@std@@XZ
@@ -3318,6 +3420,7 @@
     ?max_size@?$allocator@PAPBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@QBEIXZ
     ?max_size@?$allocator@PAU?$__hash_node_base@PAU?$__hash_node@U?$__hash_value_type@V?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@PBVImpl@time_zone@cctz@time_internal@absl@@@__1@std@@PAX@__1@std@@@__1@std@@@__1@std@@QBEIXZ
     ?max_size@?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@QBEIXZ
+    ?max_size@?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@QBEIXZ
     ?max_size@?$allocator@PAVCordzHandle@cord_internal@absl@@@__1@std@@QBEIXZ
     ?max_size@?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@QBEIXZ
     ?max_size@?$allocator@PBVCordzHandle@cord_internal@absl@@@__1@std@@QBEIXZ
@@ -3392,6 +3495,7 @@
     ?push_back@?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEXABQAUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEX$$QAPAUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEXABQAUCordRep@cord_internal@2@@Z
+    ?push_back@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QAEXABQAUCordRepConcat@cord_internal@2@@Z
     ?push_back@?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QAEXABQBUCordRep@cord_internal@2@@Z
     ?push_back@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QAEX$$QAUPayload@status_internal@2@@Z
     ?push_back@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QAEX$$QAUSubRange@2@@Z
@@ -3508,6 +3612,7 @@
     ?size@?$InlinedVector@H$0CP@V?$allocator@H@__1@std@@@absl@@QBEIXZ
     ?size@?$InlinedVector@PAUCordRep@cord_internal@absl@@$01V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QBEIXZ
     ?size@?$InlinedVector@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@absl@@QBEIXZ
+    ?size@?$InlinedVector@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@absl@@QBEIXZ
     ?size@?$InlinedVector@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@absl@@QBEIXZ
     ?size@?$InlinedVector@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@absl@@QBEIXZ
     ?size@?$InlinedVector@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@absl@@QBEIXZ
diff --git a/symbols_x86_rel.def b/symbols_x86_rel.def
index 580672e..6b4f2c8 100644
--- a/symbols_x86_rel.def
+++ b/symbols_x86_rel.def
@@ -42,11 +42,13 @@
     ??$DivMod@$09@?$BigUnsigned@$03@strings_internal@absl@@AAEIXZ
     ??$DivMod@$09@?$BigUnsigned@$0FE@@strings_internal@absl@@AAEIXZ
     ??$EmplaceBack@ABQAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUCordRep@cord_internal@2@ABQAU342@@Z
+    ??$EmplaceBack@ABQAUCordRepConcat@cord_internal@absl@@@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUCordRepConcat@cord_internal@2@ABQAU342@@Z
     ??$EmplaceBack@ABQBUCordRep@cord_internal@absl@@@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPBUCordRep@cord_internal@2@ABQBU342@@Z
     ??$EmplaceBack@PAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAPAUCordRep@cord_internal@2@$$QAPAU342@@Z
     ??$EmplaceBack@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAUPayload@status_internal@2@$$QAU342@@Z
     ??$EmplaceBack@USubRange@absl@@@?$Storage@USubRange@absl@@$0CP@V?$allocator@USubRange@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEAAUSubRange@2@$$QAU32@@Z
     ??$EmplaceBackSlow@ABQAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPAUCordRep@cord_internal@2@ABQAU342@@Z
+    ??$EmplaceBackSlow@ABQAUCordRepConcat@cord_internal@absl@@@?$Storage@PAUCordRepConcat@cord_internal@absl@@$0CP@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPAUCordRepConcat@cord_internal@2@ABQAU342@@Z
     ??$EmplaceBackSlow@ABQBUCordRep@cord_internal@absl@@@?$Storage@PBUCordRep@cord_internal@absl@@$0CP@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPBUCordRep@cord_internal@2@ABQBU342@@Z
     ??$EmplaceBackSlow@PAUCordRep@cord_internal@absl@@@?$Storage@PAUCordRep@cord_internal@absl@@$0CP@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAPAUCordRep@cord_internal@2@$$QAPAU342@@Z
     ??$EmplaceBackSlow@UPayload@status_internal@absl@@@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEAAUPayload@status_internal@2@$$QAU342@@Z
@@ -218,6 +220,7 @@
     ?Alloc@LowLevelAlloc@base_internal@absl@@SAPAXI@Z
     ?AllocWithArena@LowLevelAlloc@base_internal@absl@@SAPAXIPAUArena@123@@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@@23@AAV?$allocator@PAUCordRep@cord_internal@absl@@@__1@std@@I@Z
+    ?Allocate@?$MallocAdapter@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@@23@AAV?$allocator@PAUCordRepConcat@cord_internal@absl@@@__1@std@@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@@23@AAV?$allocator@PBUCordRep@cord_internal@absl@@@__1@std@@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@UPayload@status_internal@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@UPayload@status_internal@absl@@@__1@std@@@23@AAV?$allocator@UPayload@status_internal@absl@@@__1@std@@I@Z
     ?Allocate@?$MallocAdapter@V?$allocator@USubRange@absl@@@__1@std@@$0A@@inlined_vector_internal@absl@@SA?AU?$Allocation@V?$allocator@USubRange@absl@@@__1@std@@@23@AAV?$allocator@USubRange@absl@@@__1@std@@I@Z
@@ -328,6 +331,7 @@
     ?Description@TimeZoneInfo@cctz@time_internal@absl@@UBE?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Description@TimeZoneLibC@cctz@time_internal@absl@@UBE?AV?$basic_string@DU?$char_traits@D@__1@std@@V?$allocator@D@23@@__1@std@@XZ
     ?Destroy@CordRep@cord_internal@absl@@SAXPAU123@@Z
+    ?Destroy@CordRepCrc@cord_internal@absl@@SAXPAU123@@Z
     ?Destroy@CordRepRing@cord_internal@absl@@CAXPAV123@@Z
     ?Destroy@PerThreadSem@synchronization_internal@absl@@CAXPAUThreadIdentity@base_internal@3@@Z
     ?DestroyContents@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@AAEXXZ
@@ -370,7 +374,10 @@
     ?Erase@?$Storage@UPayload@status_internal@absl@@$00V?$allocator@UPayload@status_internal@absl@@@__1@std@@@inlined_vector_internal@absl@@QAEPAUPayload@status_internal@3@PBU453@0@Z
     ?ErasePayload@Status@absl@@QAE_NVstring_view@2@@Z
     ?Eval@Condition@absl@@QBE_NXZ
+    ?ExpectedChecksum@Cord@absl@@QBE?AV?$optional@I@2@XZ
     ?ExtendTransitions@TimeZoneInfo@cctz@time_internal@absl@@AAE_NXZ
+    ?ExtractAppendBuffer@CordRepBtree@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PAV123@I@Z
+    ?ExtractAppendBuffer@CordRepConcat@cord_internal@absl@@SA?AUExtractResult@CordRep@23@PAU123@I@Z
     ?ExtractFront@CordRepBtree@cord_internal@absl@@CAPAUCordRep@23@PAV123@@Z
     ?FDivDuration@absl@@YANVDuration@1@0@Z
     ?FailedPreconditionError@absl@@YA?AVStatus@1@Vstring_view@1@@Z
@@ -385,6 +392,7 @@
     ?Find@ByChar@absl@@QBE?AVstring_view@2@V32@I@Z
     ?Find@ByLength@absl@@QBE?AVstring_view@2@V32@I@Z
     ?Find@ByString@absl@@QBE?AVstring_view@2@V32@I@Z
+    ?FindFlatStartPiece@InlineRep@Cord@absl@@QBE?AVstring_view@3@XZ
     ?FindPath@GraphCycles@synchronization_internal@absl@@QBEHUGraphId@23@0HQAU423@@Z
     ?FindSlow@CordRepRing@cord_internal@absl@@ABE?AUPosition@123@II@Z
     ?FindTailSlow@CordRepRing@cord_internal@absl@@ABE?AUPosition@123@II@Z
@@ -559,6 +567,7 @@
     ?MultiplyStep@?$BigUnsigned@$0FE@@strings_internal@absl@@AAEXHPBIHH@Z
     ?Mutable@CordRepRing@cord_internal@absl@@CAPAV123@PAV123@I@Z
     ?MutexDelay@synchronization_internal@absl@@YAHHH@Z
+    ?New@CordRepCrc@cord_internal@absl@@SAPAU123@PAUCordRep@23@I@Z
     ?New@CordRepFlat@cord_internal@absl@@SAPAU123@I@Z
     ?New@CordRepRing@cord_internal@absl@@CAPAV123@II@Z
     ?NewArena@LowLevelAlloc@base_internal@absl@@SAPAUArena@123@H@Z
@@ -664,6 +673,7 @@
     ?Seek@CordRepBtreeReader@cord_internal@absl@@QAE?AVstring_view@3@I@Z
     ?SetCapacityForTesting@CordRepRing@cord_internal@absl@@QAEXI@Z
     ?SetCurrentThreadIdentity@base_internal@absl@@YAXPAUThreadIdentity@12@P6AXPAX@Z@Z
+    ?SetExpectedChecksum@Cord@absl@@QAEXI@Z
     ?SetHashtablezEnabled@container_internal@absl@@YAX_N@Z
     ?SetHashtablezMaxSamples@container_internal@absl@@YAXH@Z
     ?SetHashtablezSampleParameter@container_internal@absl@@YAXH@Z