| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| // { dg-require-thread-fence "" } |
| |
| // Copyright (C) 2008-2021 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() |
| { |
| using namespace std; |
| |
| atomic_flag af0 = ATOMIC_FLAG_INIT; |
| VERIFY( ! af0.test(memory_order_acquire) ); |
| |
| atomic_flag af{true}; |
| const atomic_flag& caf = af; |
| |
| VERIFY( af.test() ); |
| VERIFY( caf.test() ); |
| af.clear(); |
| VERIFY( ! af.test() ); |
| VERIFY( ! caf.test() ); |
| } |
