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93e79ed3 | 1 | // { dg-do run { target c++11 } } |
1e42d2f4 | 2 | // { dg-additional-options "-pthread" { target pthread } } |
7b800287 | 3 | |
83ffe9cd | 4 | // Copyright (C) 2008-2023 Free Software Foundation, Inc. |
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5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
748086b7 | 9 | // Free Software Foundation; either version 3, or (at your option) |
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10 | // any later version. |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
748086b7 JJ |
18 | // with this library; see the file COPYING3. If not see |
19 | // <http://www.gnu.org/licenses/>. | |
7b800287 | 20 | |
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21 | |
22 | #include <mutex> | |
23 | #include <system_error> | |
24 | #include <testsuite_hooks.h> | |
25 | ||
26 | std::once_flag value_flag; | |
27 | int value = 1; | |
28 | ||
29 | void add_to_value(int i) | |
30 | { | |
31 | value += i; | |
32 | } | |
33 | ||
34 | int main() | |
35 | { | |
93e79ed3 | 36 | try |
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37 | { |
38 | std::call_once(value_flag, add_to_value, 2); | |
39 | std::call_once(value_flag, add_to_value, 2); | |
40 | } | |
41 | catch (const std::system_error& e) | |
42 | { | |
43 | VERIFY( false ); | |
44 | } | |
45 | catch (...) | |
46 | { | |
47 | VERIFY( false ); | |
48 | } | |
49 | ||
50 | VERIFY( value == 3 ); | |
51 | ||
52 | return 0; | |
53 | } |