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// 2003-05-01  Petur Runolfsson  <peturr02@ru.is>

// 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.

#include <iostream>

#include <cstdio>

#include <testsuite_hooks.h>

void test10()

{

  using namespace std;

  bool test __attribute__((unused)) = true;

  const char* name = "filebuf_virtuals-1.txt";

  FILE* ret = freopen(name, "r", stdin);

  VERIFY( ret != NULL );

  streampos p1 = cin.tellg();

  VERIFY( p1 != streampos(-1) );

  VERIFY( streamoff(p1) == 0 );

  cin.seekg(0, ios::end);

  VERIFY( cin.good() );

  streampos p2 = cin.tellg();

  VERIFY( p2 != streampos(-1) );

  VERIFY( p2 != p1 );

  VERIFY( streamoff(p2) == ftell(stdin) );

  cin.seekg(p1);

  VERIFY( cin.good() );

  streamoff n = p2 - p1;

  VERIFY( n > 0 );

  for (int i = 0; i < n; ++i)

    {

      streampos p3 = cin.tellg();

      VERIFY( streamoff(p3) == i );

      VERIFY( ftell(stdin) == i );

      cin.get();

      VERIFY( cin.good() );

    }

  streampos p4 = cin.tellg();

  VERIFY( streamoff(p4) == n );

  VERIFY( ftell(stdin) == n );

  cin.get();

  VERIFY( cin.eof() );

}

int main()

{

  test10();

  return 0;

}