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// 2004-02-14  Petur Runolfsson  <peturr02@ru.is>

// Copyright (C) 2004, 2009 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/>.

// 27.8.1.4 Overridden virtual functions

#include <fstream>

#include <locale>

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

{

protected:

  virtual std::codecvt_base::result

  do_out(std::mbstate_t&, const char* from, const char*,

         const char*& from_next, char* to, char*, char*& to_next) const

  {

    from_next = from;

    to_next = to;

    return std::codecvt_base::error;

  }

  virtual bool

  do_always_noconv() const throw()

  { return false; }

};

// libstdc++/13858

void test01()

{

  using namespace std;

  filebuf fb;

  fb.pubimbue(locale(locale::classic(), new Cvt));

  fb.open("tmp_13858_char", ios_base::out);

  try

    {

      fb.sputc('a');

      fb.sputc('b');

      fb.pubimbue(locale::classic());

      fb.sputc('c');

      fb.pubsync();

      fb.close();

    }

  catch (std::exception&)

    {

    }

}

int main()

{

  test01();

  return 0;

}