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//===----------------------------------------------------------------------===//
//
// 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, c++17, c++20
// <memory>
// [out.ptr.t], class template out_ptr_t
// template<class Smart, class Pointer, class... Args>
// class out_ptr_t; // since c++23
// operator Pointer*() const noexcept;
// operator void**() const noexcept;
#include <cassert>
#include <concepts>
#include <memory>
int main(int, char**) {
// operator Pointer*()
{
std::unique_ptr<int> uPtr;
const std::out_ptr_t<std::unique_ptr<int>, int*> oPtr{uPtr};
static_assert(noexcept(oPtr.operator int**()));
std::same_as<int**> decltype(auto) pPtr = oPtr.operator int**();
assert(*pPtr == nullptr);
}
{
std::unique_ptr<int, std::default_delete<int>> uPtr;
const std::out_ptr_t<decltype(uPtr), int*, std::default_delete<int>> oPtr{uPtr, std::default_delete<int>{}};
static_assert(noexcept(oPtr.operator int**()));
std::same_as<int**> decltype(auto) pPtr = oPtr.operator int**();
assert(*pPtr == nullptr);
}
// operator void**()
{
std::unique_ptr<int> uPtr;
const std::out_ptr_t<std::unique_ptr<int>, void*> oPtr{uPtr};
static_assert(noexcept(oPtr.operator void**()));
std::same_as<void**> decltype(auto) pPtr = oPtr.operator void**();
assert(*pPtr == nullptr);
}
return 0;
}
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