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// { dg-do compile }

// -*- C++ -*-

// Copyright (C) 2006, 2007, 2009, 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 <ext/type_traits.h>

#include <tr1/type_traits>

template<typename T>

  void

  check_remove_unsigned()

  {

    typedef typename __gnu_cxx::__remove_unsigned<T>::__type signed_type;

  }

int main()

{

  check_remove_unsigned<float>();  // { dg-error "required from" }

  return 0;

}

// { dg-error "required from" "" { target *-*-* } 28 }

// { dg-error "no type" "" { target *-*-* } 112 }