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// { dg-do compile }

// { dg-options "-std=gnu++0x" }

// Copyright (C) 2010 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 <utility>

template <class T>

  struct C

  {

    T t_;

    C() { }

    template <class U,

              class = typename std::enable_if

                    <

                        !std::is_lvalue_reference<U>::value

                    >::type>

      C(U&& u) : t_(std::forward<T>(std::move(u).get())) { }

    C(C&& c) : t_(std::forward<T>(c.t_)) { }

  };

template <class T>

  struct Derived

  : C<T>

  {

    Derived() { }

    Derived(Derived&& d) : C<T>(std::forward<C<T>>(d)) { }

  };

// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2951.html

// Test E.

int main()

{

  Derived<int> d;

  Derived<int> d2(std::move(d));

}