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// { dg-do compile { target c++11 } }
// Copyright (C) 2016-2019 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/>.
#include <tuple>
#include <utility>
struct derived;
struct base
{
operator derived & () &;
operator derived const & () const &;
operator derived && () &&;
};
struct derived : base {};
base::operator derived & () & { return *static_cast<derived *>(this); }
base::operator derived const & () const & { return *static_cast<derived const *>(this); }
base::operator derived && () && { return std::move(*static_cast<derived *>(this)); }
std::tuple<derived &&> test(base && b)
{
return std::tuple<derived &&>(std::move(b));
}
int main(int,char**)
{
auto d = std::get<0>(test(derived{}));
return 0;
}
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