| 1 | //===----------------------------------------------------------------------===// |
|---|
| 2 | // |
|---|
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
|---|
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
|---|
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
|---|
| 6 | // |
|---|
| 7 | //===----------------------------------------------------------------------===// |
|---|
| 8 | |
|---|
| 9 | // <new> |
|---|
| 10 | |
|---|
| 11 | // template <class T> constexpr T* launder(T* p) noexcept; |
|---|
| 12 | |
|---|
| 13 | // UNSUPPORTED: c++03, c++11, c++14 |
|---|
| 14 | |
|---|
| 15 | #include <new> |
|---|
| 16 | #include <cassert> |
|---|
| 17 | |
|---|
| 18 | #include "test_macros.h" |
|---|
| 19 | |
|---|
| 20 | constexpr int gi = 5; |
|---|
| 21 | constexpr float gf = 8.f; |
|---|
| 22 | |
|---|
| 23 | int main(int, char**) { |
|---|
| 24 | static_assert(std::launder(p: &gi) == &gi, "" ); |
|---|
| 25 | static_assert(std::launder(p: &gf) == &gf, "" ); |
|---|
| 26 | |
|---|
| 27 | const int *i = &gi; |
|---|
| 28 | const float *f = &gf; |
|---|
| 29 | static_assert(std::is_same<decltype(i), decltype(std::launder(i))>::value, "" ); |
|---|
| 30 | static_assert(std::is_same<decltype(f), decltype(std::launder(f))>::value, "" ); |
|---|
| 31 | |
|---|
| 32 | assert(std::launder(i) == i); |
|---|
| 33 | assert(std::launder(f) == f); |
|---|
| 34 | |
|---|
| 35 | return 0; |
|---|
| 36 | } |
|---|
| 37 | |
|---|
