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1 | // Copyright (C) 2020-2024 Free Software Foundation, Inc. | |
2 | // | |
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) | |
7 | // any later version. | |
8 | ||
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. | |
13 | ||
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/>. | |
17 | ||
18 | // { dg-do run { target c++20 } } | |
19 | // { dg-require-thread-fence "" } | |
20 | // { dg-add-options libatomic } | |
21 | ||
22 | #include <atomic> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | constexpr std::atomic<float> a; | |
26 | ||
27 | void | |
28 | test01() | |
29 | { | |
30 | VERIFY(a.load() == 0); | |
31 | static_assert(std::is_nothrow_default_constructible_v<std::atomic<float>>); | |
32 | } | |
33 | ||
34 | int | |
35 | main() | |
36 | { | |
37 | test01(); | |
38 | } |