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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;
  typedef size_t 			size_type;
 
  bool test __attribute__((unused)) = true;
  streamsize 			strmsz_1;
 
  // streamsize sputn(const char_typs* s, streamsize n)
  // write up to n chars to out_cur from s, returning number assigned
  // NB *sputn will happily put '\0' into your stream if you give it a chance*
 
  // in 
  {
    constraint_filebuf fb_01; 
    fb_01.pubsetbuf(0, 0);
    fb_01.open(name_01, ios_base::in);
    VERIFY( fb_01.unbuffered() );
    strmsz_1 = fb_01.sputn("racadabra", 10);
    VERIFY( strmsz_1 == 0 );  
    VERIFY( fb_01.unbuffered() );
  }
}
 
int main() 
{
  test05();
  return 0;
}