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152
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1 // { dg-do run { target c++2a } }
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2 // { dg-require-thread-fence "" }
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3
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4 // Copyright (C) 2008-2020 Free Software Foundation, Inc.
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5 //
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6 // This file is part of the GNU ISO C++ Library. This library is free
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7 // software; you can redistribute it and/or modify it under the
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8 // terms of the GNU General Public License as published by the
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9 // Free Software Foundation; either version 3, or (at your option)
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10 // any later version.
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11
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12 // This library is distributed in the hope that it will be useful,
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13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 // GNU General Public License for more details.
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16
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17 // You should have received a copy of the GNU General Public License along
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18 // with this library; see the file COPYING3. If not see
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19 // <http://www.gnu.org/licenses/>.
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20
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21 #include <atomic>
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22
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23 int main()
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24 {
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25 using namespace std;
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26 atomic_flag af = ATOMIC_FLAG_INIT;
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27
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28 if (af.test())
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29 af.clear();
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30
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31 return 0;
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32 }
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