blob: e3b45beacd71d5b727942dd7f4b439035d527a8d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
// { dg-do run { target c++11 } }
// { dg-require-thread-fence "" }
// Copyright (C) 2009-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <atomic>
#include <testsuite_hooks.h>
int main()
{
std::atomic_flag f = ATOMIC_FLAG_INIT;
f.clear(); // set to false
VERIFY( false == f.test_and_set() ); // return previous false, set to true
VERIFY( true == f.test_and_set() ); // return true
return 0;
}
|
