xref: /llvm-project/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp (revision a7f9895cc18995549c7facb96e72718da282a864)
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 // UNSUPPORTED: no-threads
10 
11 // <mutex>
12 
13 // struct once_flag;
14 
15 // constexpr once_flag() noexcept;
16 
17 #include <mutex>
18 #include "test_macros.h"
19 
main(int,char **)20 int main(int, char**)
21 {
22     {
23     std::once_flag f;
24     (void)f;
25     }
26 #if TEST_STD_VER >= 11
27     {
28     constexpr std::once_flag f;
29     (void)f;
30     }
31 #endif
32 
33   return 0;
34 }
35