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// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>

// Copyright (C) 2001, 2002, 2003, 2004 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 <streambuf>

#include <locale>

#include <cwchar>

#include <testsuite_hooks.h>

class MyTraits : public std::char_traits<wchar_t>

{

public:

  static bool eq(wchar_t c1, wchar_t c2)

  {

    bool test __attribute__((unused)) = true;

    VERIFY( c1 != L'X' );

    VERIFY( c2 != L'X' );

    return std::char_traits<wchar_t>::eq(c1, c2);

  }

};

class MyBuf : public std::basic_streambuf<wchar_t, MyTraits>

{

  wchar_t buffer[8];

public:

  MyBuf()

  {

    std::wmemset(buffer, L'X', sizeof(buffer) / sizeof(buffer[0]));

    std::wmemset(buffer + 2, L'f', 4);

    setg(buffer + 2, buffer + 2, buffer + 6);

  }

};

// libstdc++/9538

void test08()

{

  bool test __attribute__((unused)) = true;

  MyBuf mb;

  mb.sputbackc(L'a');

}

int main()

{

  test08();

  return 0;

}