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// { dg-do compile { target c++11 } }
// Copyright (C) 2016 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 <type_traits>
#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));
}
int main()
{
base b;
derived&& d(static_cast<derived&&>(std::move(b)));
derived&& d2(std::move(b));
static_assert(std::is_constructible<derived&&, base&&>::value, "");
}
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