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// { dg-require-namedlocale "" }

// Copyright (C) 2003, 2005 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 2, 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 COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// 27.8.1.4 Overridden virtual functions

#include <fstream>

#include <locale>

#include <testsuite_hooks.h>

class Cvt : public std::codecvt<char, char, std::mbstate_t>

{

protected:

  int do_encoding() const throw()

  { return -1; }

  bool do_always_noconv() const throw()

  { return false; }

};

// libstdc++/13171

void test01()

{

  bool test __attribute__((unused)) = true;

  using namespace std;

  filebuf fb;

  fb.pubimbue(locale(locale("en_US"), new Cvt));

  fb.open("tmp_13171-4", ios_base::out);

  fb.pubimbue(locale("fr_FR"));

  fb.sputc('N');

  fb.pubsync();

  fb.close();

}

int main()

{

  test01();

  return 0;

}