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// { dg-options "-std=gnu++0x" }
// { dg-do compile }
 
// Copyright (C) 2011 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>
 
struct A { };
struct B : A { };
 
// libstdc++/51185
void f()
{
  static_assert(!std::is_constructible<B &&, A>(), "");
  static_assert(!std::is_constructible<B const &&, A>(), "");
  static_assert(!std::is_constructible<B const &&, A const>(), "");
  static_assert(!std::is_constructible<B volatile &&, A>(), "");
  static_assert(!std::is_constructible<B volatile &&, A volatile>(), "");
  static_assert(!std::is_constructible<B const volatile &&, A>(), "");
  static_assert(!std::is_constructible<B const volatile &&, A const>(), "");
  static_assert(!std::is_constructible<B const volatile &&, A volatile>(), "");
  static_assert(!std::is_constructible<B const volatile &&,
		A const volatile>(), "");
}