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gcc.gnu.org Git - gcc.git/blob - libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.cc
1 // { dg-options "-std=gnu++0x" }
3 // Copyright (C) 2009 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
21 #include <testsuite_hooks.h>
25 bool test
__attribute__((unused
)) = true;
26 std::atomic_flag f
= ATOMIC_FLAG_INIT
;
28 f
.clear(); // set to false
29 VERIFY( false == f
.test_and_set() ); // return previous false, set to true
30 VERIFY( true == f
.test_and_set() ); // return true
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