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// Copyright (C) 2003 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.

// 27.5.2.2.3 Get area

#include <fstream>

#include <testsuite_hooks.h>

class Derived_fbuf : public std::filebuf

{

public:

  const char_type* pub_egptr() const

  { return egptr(); }

  const char_type* pub_gptr() const

  { return gptr(); }

};

// libstdc++/9701 (in_avail)

void test01()

{

  using namespace std;

  bool test __attribute__((unused)) = true;

  const char* name = "tmp_file1";

  Derived_fbuf df2;

  df2.open(name, ios_base::in | ios_base::out | ios_base::trunc);

  df2.sputn("Comomoc", 7);

  df2.pubseekoff(0, ios_base::beg);

  df2.sbumpc();

  df2.sputbackc('t');

  VERIFY( df2.pub_gptr() < df2.pub_egptr() );

  VERIFY( df2.in_avail() == df2.pub_egptr() - df2.pub_gptr() );

}

int

main()

{

  test01();

  return 0;

}