37 lines
1014 B
C++
37 lines
1014 B
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <new>
|
|
|
|
// template <class T> constexpr T* launder(T* p) noexcept;
|
|
|
|
// UNSUPPORTED: c++03, c++11, c++14
|
|
|
|
#include <new>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
constexpr int gi = 5;
|
|
constexpr float gf = 8.f;
|
|
|
|
int main(int, char**) {
|
|
static_assert(std::launder(&gi) == &gi, "" );
|
|
static_assert(std::launder(&gf) == &gf, "" );
|
|
|
|
const int *i = &gi;
|
|
const float *f = &gf;
|
|
static_assert(std::is_same<decltype(i), decltype(std::launder(i))>::value, "");
|
|
static_assert(std::is_same<decltype(f), decltype(std::launder(f))>::value, "");
|
|
|
|
assert(std::launder(i) == i);
|
|
assert(std::launder(f) == f);
|
|
|
|
return 0;
|
|
}
|