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// <atomic>
10
11// struct atomic_flag
12
13// void atomic_flag_clear(volatile atomic_flag*);
14// void atomic_flag_clear(atomic_flag*);
15
16#include <atomic>
17#include <cassert>
18
19#include "test_macros.h"
20
21int main(int, char**)
22{
23 {
24 std::atomic_flag f;
25 f.clear();
26 f.test_and_set();
27 std::atomic_flag_clear(a: &f);
28 assert(f.test_and_set() == 0);
29 }
30 {
31 volatile std::atomic_flag f;
32 f.clear();
33 f.test_and_set();
34 std::atomic_flag_clear(a: &f);
35 assert(f.test_and_set() == 0);
36 }
37
38 return 0;
39}
40

source code of libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp