test/libcxx/depr/depr.util.smartptr.shared.atomic/atomic_compare_exchange_strong.depr_in_cxx20..verify.cpp

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX26_REMOVED_SHARED_PTR_ATOMICS
// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11, c++14, c++17

// <memory>

// shared_ptr

// template <class T>
// bool
// atomic_compare_exchange_strong(shared_ptr<T>* p, shared_ptr<T>* v,
//                                shared_ptr<T> w);                     // Deprecated in C++20, removed in C++26

#include <atomic>
#include <memory>
#include <tuple>

void test() {
  std::shared_ptr<int> p(new int(4));
  std::shared_ptr<int> v(new int(3));
  std::shared_ptr<int> w(new int(2));
  // expected-warning@+1 {{'atomic_compare_exchange_strong<int>' is deprecated}}
  std::ignore = std::atomic_compare_exchange_strong(&p, &v, w);
}