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// Copyright (C) 2018-2019 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 } }
#include <memory>
#include <testsuite_hooks.h>
struct Should_not_happen { };
struct X { };
namespace std {
template<> struct less<X*> {
bool operator()(X*, X*) const { throw Should_not_happen(); }
};
}
bool custom_op_called = false;
bool
operator<(const std::shared_ptr<X>&, const std::shared_ptr<X>&)
{
custom_op_called = true;
return false;
}
void
test01()
{
const std::shared_ptr<X> sp;
bool b = sp < sp;
VERIFY( !b );
VERIFY( custom_op_called );
std::less<std::shared_ptr<X>> lt;
custom_op_called = false;
b = lt(sp, sp);
VERIFY( !b );
VERIFY( custom_op_called ); // PR libstdc++/86537 and LWG DR 1262
#if __cplusplus >= 201402L
std::less<> ltv;
custom_op_called = false;
b = ltv(sp, sp);
VERIFY( !b );
VERIFY( custom_op_called );
#endif
}
int
main()
{
test01();
}
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