// { dg-do run { target c++14 } }
// Copyright (C) 2013-2017 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
// .
#include
#include
#include
#include
namespace ns
{
struct value_type
{
int i;
std::string s;
};
bool
operator==(value_type const& lhs, value_type const& rhs)
{ return std::tie(lhs.i, lhs.s) == std::tie(rhs.i, rhs.s); }
bool
operator<(value_type const& lhs, value_type const& rhs)
{ return std::tie(lhs.i, lhs.s) < std::tie(rhs.i, rhs.s); }
} // namespace ns
int main()
{
using ns::value_type;
using O = std::experimental::optional;
value_type const reference { 42, "forty-two" };
{
O o;
VERIFY( o < reference );
VERIFY( !(reference < o) );
VERIFY( !(o > reference) );
VERIFY( reference > o );
VERIFY( o <= reference );
VERIFY( !(reference <= o) );
VERIFY( !(o >= reference) );
VERIFY( reference >= o );
}
{
O o { value_type { 11, "eleventy" } };
VERIFY( o < reference );
VERIFY( !(reference < o) );
VERIFY( !(o > reference) );
VERIFY( reference > o );
VERIFY( o <= reference );
VERIFY( !(reference <= o) );
VERIFY( !(o >= reference) );
VERIFY( reference >= o );
}
{
O o { value_type { 42, "forty-two" } };
VERIFY( !(o < reference) );
VERIFY( !(reference < o) );
VERIFY( !(o > reference) );
VERIFY( !(reference > o) );
VERIFY( o <= reference );
VERIFY( reference <= o );
VERIFY( o >= reference );
VERIFY( reference >= o );
}
}