// { dg-options "-std=gnu++14" }
// { dg-do compile }
// Copyright (C) 2013-2014 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 moved_to of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// .
#include
struct value_type
{
int i;
};
int main()
{
constexpr std::experimental::optional o { value_type { 51 } };
constexpr value_type fallback { 3 };
static_assert( o.value_or(fallback).i == 51, "" );
static_assert( o.value_or(fallback).i == (*o).i, "" );
}