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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/29_atomics/atomic/62259.cc
1 // Copyright (C) 2015-2023 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 compile { target c++11 } }
19 // { dg-require-atomic-builtins "" }
20 // { dg-require-cstdint "" }
35 static_assert( alignof(std::atomic
<twoints
>) >= alignof(int64_t),
36 "std::atomic not suitably aligned" );
40 struct power_of_two_obj
{
44 std::atomic
<power_of_two_obj
> obj1
;
46 static_assert( __alignof__(obj1
) >= alignof(int64_t),
47 "std::atomic not suitably aligned" );
49 struct container_struct
{
51 std::atomic
<power_of_two_obj
> ao
;
54 container_struct obj2
;
56 static_assert( __alignof__(obj2
.ao
) >= alignof(int64_t),
57 "std::atomic not suitably aligned" );