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

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-gthreads "" }
   3
   4 // Copyright (C) 2010-2020 Free Software Foundation, Inc.
   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
   9 // Free Software Foundation; either version 3, or (at your option)
  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
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21
  22 #include <future>
  23 #include <testsuite_hooks.h>
  24
  25 std::future<int> get() { return std::promise<int>().get_future(); }
  26
  27 void test01()
  28 {
  29   // assign
  30   std::shared_future<int> p1;
  31   std::shared_future<int> p2 = get();
  32   p1 = std::move(p2);
  33   VERIFY( p1.valid() );
  34   VERIFY( !p2.valid() );
  35 }
  36
  37 int main()
  38 {
  39   test01();
  40   return 0;
  41 }