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// 2004-10-01  Paolo Carlini  <pcarlini@suse.de>

// 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/>.

// 27.7.1.3  Overridden virtual functions  [lib.stringbuf.virtuals]

#include <sstream>

#include <testsuite_hooks.h>

class my_stringbuf : public std::stringbuf

{

public:

  my_stringbuf(const std::string& str, std::ios_base::openmode mode)

  : std::stringbuf(str, mode) { }

  int_type

  pub_pbackfail(int_type c)

  { return this->pbackfail(c); }

};

void test01()

{

  bool test __attribute__((unused)) = true;

  using namespace std;

  typedef my_stringbuf::int_type    int_type;

  typedef my_stringbuf::traits_type traits_type;

  my_stringbuf sbuf("any", ios_base::in | ios_base::out);

  int_type c = sbuf.sgetc();

  VERIFY( c == 'a' );

  c = sbuf.pub_pbackfail('z');

  VERIFY( c == traits_type::eof() );

  c = sbuf.sbumpc();

  VERIFY( c == 'a' );

  c = sbuf.pub_pbackfail('a');

  VERIFY( c == 'a' );

  c = sbuf.sbumpc();

  VERIFY( c == 'a' );

  c = sbuf.pub_pbackfail('x');

  VERIFY( c == 'x' );

  c = sbuf.sbumpc();

  VERIFY( c == 'x' );

  const int_type eof = traits_type::eof();

  c = sbuf.pub_pbackfail(eof);

  VERIFY( c == traits_type::not_eof(eof) );

  c = sbuf.sgetc();

  VERIFY( c == 'x' );

}

int main()

{

  test01();

  return 0;

}