libstdc++-v3/testsuite/30_threads/shared_future/cons/assign.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-require-cstdint "" }
   3 // { dg-require-gthreads "" }
   4 // { dg-require-atomic-builtins "" }
   5
   6 // Copyright (C) 2010 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23
  24 #include <future>
  25 #include <testsuite_hooks.h>
  26
  27 std::future<int> get() { return std::promise<int>().get_future(); }
  28
  29 void test01()
  30 {
  31   // assign
  32   std::shared_future<int> p1;
  33   std::shared_future<int> p2 = get();
  34   p1 = p2;
  35   VERIFY( p1.valid() );
  36   VERIFY( p2.valid() );
  37 }
  38
  39 int main()
  40 {
  41   test01();
  42   return 0;
  43 }
  44