libstdc++-v3/testsuite/30_threads/packaged_task/members/swap.cc

   1 // { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-rtems* *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options "-pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* powerpc-ibm-aix* } }
   3 // { dg-require-effective-target c++11 }
   4 // { dg-require-cstdint "" }
   5 // { dg-require-gthreads "" }
   6 // { dg-require-atomic-builtins "" }
   7
   8 // Copyright (C) 2009-2017 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
  26 #include <future>
  27 #include <testsuite_hooks.h>
  28
  29 int zero() { return 0; }
  30
  31 void test01()
  32 {
  33   std::packaged_task<int()> p1(zero);
  34   std::packaged_task<int()> p2;
  35   VERIFY( p1.valid() );
  36   VERIFY( !p2.valid() );
  37   p1.swap(p2);
  38   VERIFY( !p1.valid() );
  39   VERIFY( p2.valid() );
  40 }
  41
  42 int main()
  43 {
  44   test01();
  45   return 0;
  46 }