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, c++17
14
15 #include <new>
16 #include <cassert>
17
18 #include "test_macros.h"
19
main(int,char **)20 int main(int, char**)
21 {
22 int *p = nullptr;
23 std::launder(p); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
24
25 return 0;
26 }
27