| //===----------------------------------------------------------------------===// |
| // |
| // 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++03, c++11, c++14 |
| // REQUIRES: c++experimental |
| |
| // <experimental/memory> |
| |
| // observer_ptr |
| // |
| // template <class T> struct hash<std::experimental::observer_ptr<T>>; |
| |
| #include <experimental/memory> |
| #include <cassert> |
| |
| #include "poisoned_hash_helper.h" |
| |
| template <class T, class Object = T> |
| void test_hash() { |
| { |
| using Ptr = std::experimental::observer_ptr<T>; |
| Object obj; |
| Ptr ptr(&obj); |
| |
| std::hash<std::experimental::observer_ptr<T>> f; |
| std::size_t h = f(ptr); |
| |
| assert(h == std::hash<T*>()(&obj)); |
| } |
| |
| test_hash_enabled_for_type<std::experimental::observer_ptr<T>>(); |
| } |
| |
| struct Bar {}; |
| |
| void test() { |
| test_hash<void, int>(); |
| test_hash<int>(); |
| test_hash<Bar>(); |
| } |
| |
| int main(int, char**) { |
| // Note: This isn't constexpr friendly in the spec! |
| test(); |
| |
| return 0; |
| } |