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

// Copyright (C) 2001, 2002, 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.

// 27.8.1.4 Overridden virtual functions

#include <fstream>

#include <testsuite_hooks.h>

#include <testsuite_io.h>

// @require@ %-*.tst %-*.txt

// @diff@ %-*.tst %*.txt

const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it

void test05()

{

  using namespace std;

  using namespace __gnu_test;

  typedef filebuf::int_type     int_type;

  typedef filebuf::traits_type  traits_type;

  bool test __attribute__((unused)) = true;

  int_type                      c3;

  // int_type sputc(char_type c)

  // if out_cur not avail, return overflow(traits_type::to_int_type(c)) 

  // else, stores c at out_cur,

  // increments out_cur, and returns c as int_type

  // in 

  {

    constraint_filebuf fb_01;

    fb_01.pubsetbuf(0, 0);

    fb_01.open(name_01, ios_base::in);

    VERIFY( fb_01.unbuffered() );

    c3 = fb_01.sputc('a');

    VERIFY( c3 == traits_type::eof() );

    VERIFY( fb_01.unbuffered() );

   }

}

int main()

{

  test05();

  return 0;

}