// Copyright (C) 2015-2019 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/>.

// { dg-do run { target c++11 } }
// { dg-require-time "" }

#include <thread>
#include <chrono>

void
test01()
{
  auto now = std::chrono::system_clock::now();
  std::this_thread::sleep_until(now  - 1ul * std::chrono::seconds(1));
}

void
test02()
{
  auto now = std::chrono::steady_clock::now();
  std::this_thread::sleep_until(now  - 1ul * std::chrono::seconds(1));
}

int
main()
{
  test01();
  test02();
}