| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // type_traits |
| |
| // aligned_storage |
| // |
| // Issue 3034 added: |
| // The member typedef type shall be a trivial standard-layout type. |
| |
| #include <type_traits> |
| #include <cstddef> // for std::max_align_t |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| typedef std::aligned_storage<10, 1 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 1>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 1, ""); |
| static_assert(sizeof(T1) == 10, ""); |
| } |
| { |
| typedef std::aligned_storage<10, 2 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 2>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 2, ""); |
| static_assert(sizeof(T1) == 10, ""); |
| } |
| { |
| typedef std::aligned_storage<10, 4 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 4>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 4, ""); |
| static_assert(sizeof(T1) == 12, ""); |
| } |
| { |
| typedef std::aligned_storage<10, 8 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 8>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 8, ""); |
| static_assert(sizeof(T1) == 16, ""); |
| } |
| { |
| typedef std::aligned_storage<10, 16 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 16>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 16, ""); |
| static_assert(sizeof(T1) == 16, ""); |
| } |
| { |
| typedef std::aligned_storage<10, 32 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 32>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 32, ""); |
| static_assert(sizeof(T1) == 32, ""); |
| } |
| { |
| typedef std::aligned_storage<20, 32 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<20, 32>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 32, ""); |
| static_assert(sizeof(T1) == 32, ""); |
| } |
| { |
| typedef std::aligned_storage<40, 32 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<40, 32>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 32, ""); |
| static_assert(sizeof(T1) == 64, ""); |
| } |
| { |
| typedef std::aligned_storage<12, 16 >::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<12, 16>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 16, ""); |
| static_assert(sizeof(T1) == 16, ""); |
| } |
| { |
| typedef std::aligned_storage<1>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<1>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 1, ""); |
| static_assert(sizeof(T1) == 1, ""); |
| } |
| { |
| typedef std::aligned_storage<2>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<2>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 2, ""); |
| static_assert(sizeof(T1) == 2, ""); |
| } |
| { |
| typedef std::aligned_storage<3>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<3>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 2, ""); |
| static_assert(sizeof(T1) == 4, ""); |
| } |
| { |
| typedef std::aligned_storage<4>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<4>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 4, ""); |
| static_assert(sizeof(T1) == 4, ""); |
| } |
| { |
| typedef std::aligned_storage<5>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<5>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 4, ""); |
| static_assert(sizeof(T1) == 8, ""); |
| } |
| { |
| typedef std::aligned_storage<7>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<7>); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 4, ""); |
| static_assert(sizeof(T1) == 8, ""); |
| } |
| { |
| typedef std::aligned_storage<8>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<8>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 8, ""); |
| static_assert(sizeof(T1) == 8, ""); |
| } |
| { |
| typedef std::aligned_storage<9>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<9>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 8, ""); |
| static_assert(sizeof(T1) == 16, ""); |
| } |
| { |
| typedef std::aligned_storage<15>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<15>); |
| #endif |
| #if TEST_STD_VER <= 17 |
| static_assert(std::is_pod<T1>::value, ""); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 8, ""); |
| static_assert(sizeof(T1) == 16, ""); |
| } |
| // Use alignof(std::max_align_t) below to find the max alignment instead of |
| // hardcoding it, because it's different on different platforms. |
| // (For example 8 on arm and 16 on x86.) |
| { |
| typedef std::aligned_storage<16>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<16>); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == TEST_ALIGNOF(std::max_align_t), |
| ""); |
| static_assert(sizeof(T1) == 16, ""); |
| } |
| { |
| typedef std::aligned_storage<17>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<17>); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == TEST_ALIGNOF(std::max_align_t), |
| ""); |
| static_assert(sizeof(T1) == 16 + TEST_ALIGNOF(std::max_align_t), ""); |
| } |
| { |
| typedef std::aligned_storage<10>::type T1; |
| #if TEST_STD_VER > 11 |
| ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10>); |
| #endif |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == 8, ""); |
| static_assert(sizeof(T1) == 16, ""); |
| } |
| { |
| const int Align = 65536; |
| typedef typename std::aligned_storage<1, Align>::type T1; |
| static_assert(std::is_trivial<T1>::value, ""); |
| static_assert(std::is_standard_layout<T1>::value, ""); |
| static_assert(std::alignment_of<T1>::value == Align, ""); |
| static_assert(sizeof(T1) == Align, ""); |
| } |
| |
| return 0; |
| } |