libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/address.cxx2a.pass.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
//
//===----------------------------------------------------------------------===//

// <memory>

// allocator:
// pointer address(reference x) const;
// const_pointer address(const_reference x) const;

//  In C++20, parts of std::allocator<T> have been removed.
//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
//  is defined before including <memory>, then removed members will be restored.

// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS

#include <memory>
#include <cassert>

#include "test_macros.h"

template <class T>
void test_address()
{
    T* tp = new T();
    const T* ctp = tp;
    const std::allocator<T> a;
    assert(a.address(*tp) == tp);
    assert(a.address(*ctp) == tp);
    delete tp;
}

struct A
{
    void operator&() const {}
};

int main(int, char**)
{
    test_address<int>();
    test_address<A>();

  return 0;
}