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d1236680 RO |
1 | // { dg-do run } |
2 | // { dg-options "-pthread" } | |
71c54f8e | 3 | // { dg-require-effective-target c++11 } |
d1236680 | 4 | // { dg-require-effective-target pthread } |
be8de894 JW |
5 | // { dg-require-cstdint "" } |
6 | // { dg-require-gthreads "" } | |
7 | ||
85ec4feb | 8 | // Copyright (C) 2014-2018 Free Software Foundation, Inc. |
be8de894 JW |
9 | // |
10 | // This file is part of the GNU ISO C++ Library. This library is free | |
11 | // software; you can redistribute it and/or modify it under the | |
12 | // terms of the GNU General Public License as published by the | |
13 | // Free Software Foundation; either version 3, or (at your option) | |
14 | // any later version. | |
15 | ||
16 | // This library is distributed in the hope that it will be useful, | |
17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | // GNU General Public License for more details. | |
20 | ||
21 | // You should have received a copy of the GNU General Public License along | |
22 | // with this library; see the file COPYING3. If not see | |
23 | // <http://www.gnu.org/licenses/>. | |
24 | ||
25 | #include <thread> | |
26 | #include <memory> | |
27 | #include <testsuite_hooks.h> | |
28 | ||
29 | struct leaddock | |
30 | { | |
31 | ~leaddock(); | |
32 | }; | |
33 | ||
34 | std::shared_ptr<leaddock> global; | |
35 | ||
36 | leaddock::~leaddock() | |
37 | { | |
38 | // If this destructor is called "inside" an atomic operation on global it | |
39 | // will deadlock, so this checks that the atomic_store is done atomically. | |
40 | auto copy = std::atomic_load(&global); | |
41 | VERIFY( !copy ); | |
42 | } | |
43 | ||
44 | void f() | |
45 | { | |
46 | std::atomic_store(&global, std::make_shared<leaddock>()); | |
47 | std::atomic_store(&global, {}); | |
48 | } | |
49 | ||
50 | int main() | |
51 | { | |
52 | std::thread{ f }.join(); | |
53 | } |