libstdc++-v3/testsuite/30_threads/call_once/49668.cc

   1 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* powerpc-ibm-aix* } }
   3 // { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
   4 // { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
   5 // { dg-require-cstdint "" }
   6 // { dg-require-gthreads "" }
   7
   8 // Copyright (C) 2011-2013 Free Software Foundation, Inc.
   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 <mutex>
  26 #include <functional>
  27 #include <testsuite_hooks.h>
  28
  29 struct moveable
  30 {
  31   moveable() = default;
  32   moveable(moveable&&) = default;
  33   moveable(const moveable&) = delete;
  34 };
  35
  36 typedef decltype(std::placeholders::_1) placeholder_type;
  37
  38 void f(moveable, placeholder_type, bool& b) { b = true; }
  39
  40 void test01()
  41 {
  42   bool test = false;
  43   std::once_flag once;
  44   std::call_once(once, f, moveable(), std::placeholders::_1, std::ref(test));
  45   VERIFY( test );
  46 }
  47
  48 int main()
  49 {
  50   test01();
  51 }