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// { dg-do run }
// { dg-additional-options "-pthread" { target pthread } }
// { dg-require-effective-target c++11 }
// { dg-require-gthreads "" }
// Copyright (C) 2011-2022 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/>.
// LWG 2067. packaged_task should have deleted copy c'tor with const parameter
#include <future>
#include <thread>
#include <testsuite_hooks.h>
template<typename F>
std::future<typename std::result_of<F()>::type> spawn_task(F f)
{
typedef typename std::result_of<F()>::type result_type;
std::packaged_task<result_type()> task(std::move(f));
std::future<result_type> res(task.get_future());
std::thread(std::move(task)).detach();
return res;
}
int get_res()
{
return 42;
}
void test01()
{
auto f = spawn_task(get_res);
VERIFY( f.get() == get_res() );
}
int main()
{
test01();
}
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