// Copyright (C) 2015-2023 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 compile { target c++11 } }

#include <functional>

namespace n
{
  template<typename T> struct identity { using type = T; };

  template<typename T>
    T&&
    forward(typename identity<T>::type& t)
    { return static_cast<T&&>(t); }

  struct X { };
}

struct server
{
  void action(n::X) { }

  void act() {
    auto f = std::mem_fn(&server::action);
    n::X x;
    f(this, x);
  }
};