| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++98, c++03, c++11 |
| |
| // <experimental/coroutine> |
| |
| // template <class Promise = void> |
| // struct coroutine_handle; |
| |
| // namespace std { |
| // template <class P> struct hash<experimental::coroutine_handle<P>>; |
| // } |
| |
| #include <experimental/coroutine> |
| #include <type_traits> |
| #include <memory> |
| #include <utility> |
| #include <cstdint> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| namespace coro = std::experimental; |
| |
| template <class C> |
| void do_test(uintptr_t LHSVal, uintptr_t RHSVal) { |
| const size_t ExpectLHS = std::hash<void*>{}(reinterpret_cast<void*>(LHSVal)); |
| const size_t ExpectRHS = std::hash<void*>{}(reinterpret_cast<void*>(RHSVal)); |
| const C LHS = C::from_address(reinterpret_cast<void*>(LHSVal)); |
| const C RHS = C::from_address(reinterpret_cast<void*>(RHSVal)); |
| const std::hash<C> h; |
| // FIXME: libc++'s implementation hash's the result of LHS.address(), so we |
| // expect that value. However this is not required. |
| assert(h(LHS) == ExpectLHS); |
| assert(h(RHS) == ExpectRHS); |
| assert((h(LHS) == h(RHS)) == (LHSVal == RHSVal)); |
| { |
| ASSERT_SAME_TYPE(decltype(h(LHS)), size_t); |
| ASSERT_NOEXCEPT(std::hash<C>{}(LHS)); |
| } |
| } |
| |
| int main(int, char**) |
| { |
| std::pair<uintptr_t, uintptr_t> const TestCases[] = { |
| {0, 0}, |
| {0, 8}, |
| {8, 8}, |
| {8, 16} |
| }; |
| for (auto& TC : TestCases) { |
| do_test<coro::coroutine_handle<>>(TC.first, TC.second); |
| do_test<coro::coroutine_handle<int>>(TC.first, TC.second); |
| } |
| |
| return 0; |
| } |