1 // Copyright (C) 2020-2024 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // { dg-do run { target c++20 } }
19 // { dg-require-thread-fence "" }
20 // { dg-add-options libatomic }
23 #include <testsuite_hooks.h>
25 constexpr std::atomic
<float> a
;
30 VERIFY(a
.load() == 0);
31 static_assert(std::is_nothrow_default_constructible_v
<std::atomic
<float>>);