blob: 962afff7adcd1551a941f763d31abf5fe75745da (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// { dg-do run }
// { dg-options "-pthread" }
// { dg-require-effective-target c++11 }
// { dg-require-effective-target pthread }
// { dg-require-gthreads "" }
// Copyright (C) 2014-2019 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 <thread>
#include <memory>
#include <testsuite_hooks.h>
struct leaddock
{
~leaddock();
};
std::shared_ptr<leaddock> global;
leaddock::~leaddock()
{
// If this destructor is called "inside" an atomic operation on global it
// will deadlock, so this checks that the atomic_store is done atomically.
auto copy = std::atomic_load(&global);
VERIFY( !copy );
}
void f()
{
std::atomic_store(&global, std::make_shared<leaddock>());
std::atomic_store(&global, {});
}
int main()
{
std::thread{ f }.join();
}
|
