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

// { dg-do run }
// { dg-options "-pthread"  }
// { dg-require-effective-target c++11 }
// { dg-require-effective-target pthread }
// { dg-require-cstdint "" }
// { dg-require-gthreads "" }

// Copyright (C) 2009-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.


#include <future>
#include <system_error>
#include <testsuite_hooks.h>

int zero() { return 0; }

void test01()
{
  bool test = false;
  using namespace std;

  packaged_task<int()> p1(zero);
  future<int> f1 = p1.get_future();

  p1.reset();
  VERIFY( p1.valid() );

  future<int> f2 = p1.get_future();

  try
  {
    f1.get();
  }
  catch (future_error& e)
  {
    VERIFY( e.code() == make_error_code(future_errc::broken_promise) );
    test = true;
  }

  VERIFY( test );
}

int main()
{
  test01();
  return 0;
}