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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/29_atomics/atomic/69301.cc
1 // Copyright (C) 2017-2024 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++11 } }
19 // { dg-require-atomic-builtins "" }
22 #include <testsuite_hooks.h>
24 struct NonDefaultConstructible
26 NonDefaultConstructible(int i
) : val(i
) { }
30 template class std::atomic
<NonDefaultConstructible
>;
35 std::atomic
<NonDefaultConstructible
> a(1);
36 const auto n1
= a
.exchange(2);
37 VERIFY( n1
.val
== 1 );
38 const auto n2
= a
.load();
39 VERIFY( n2
.val
== 2 );
45 volatile std::atomic
<NonDefaultConstructible
> a(1);
46 const auto n1
= a
.exchange(2);
47 VERIFY( n1
.val
== 1 );
48 const auto n2
= a
.load();
49 VERIFY( n2
.val
== 2 );