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// Copyright (C) 2017-2018 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/>.
// { dg-do compile { target c++11 } }
#include <chrono>
#include <type_traits>
using namespace std;
using namespace std::chrono;
template <class Duration>
using sys_time = time_point<system_clock, Duration>;
static_assert(is_constructible<sys_time<milliseconds>, sys_time<seconds>>{},
"Can construct time_point from one with lower precision duration");
// PR libstdc++/81468 - DR 1177
static_assert(!is_constructible<sys_time<seconds>, sys_time<milliseconds>>{},
"Cannot construct time_point from one with higher precision duration");
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