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46 lines
1.0 KiB
C++
46 lines
1.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <memory>
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// template <class T>
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// struct pointer_traits<T*>
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// {
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// static pointer pointer_to(<details>); // constexpr in C++20
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// ...
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// };
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#include <memory>
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#include <cassert>
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#include "test_macros.h"
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#if TEST_STD_VER > 17
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constexpr
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#endif
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bool check() {
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{
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int i = 0;
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static_assert((std::is_same<int *, decltype(std::pointer_traits<int*>::pointer_to(i))>::value), "");
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int* a = std::pointer_traits<int*>::pointer_to(i);
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assert(a == &i);
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}
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{
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(std::pointer_traits<void*>::element_type)0;
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}
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return true;
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}
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int main(int, char**) {
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check();
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#if TEST_STD_VER > 17
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static_assert(check(), "");
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#endif
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return 0;
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}
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