3.cc

Mac OS X 10.4.9 for x86 Source Code gcc 实现源代码

// 2001-05-21 Benjamin Kosnik  <[e-mail]>

// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// 27.8.1.4 Overridden virtual functions

#include <fstream>
#include <testsuite_hooks.h>

void test03()
{
  using namespace std;

  bool test __attribute__((unused)) = true;
  char buf[512];
  const char* strlit = "how to tell a story and other essays: mark twain";
  const size_t strlitsize = std::strlen(strlit);
  filebuf fbuf01;
  // NB: +2 otherwise sputn is optimized to a direct write,
  // bypassing the buffer.
  fbuf01.pubsetbuf(buf, strlitsize + 2);
  fbuf01.open("tmp_setbuf3", ios_base::out);

  fbuf01.sputn(strlit, strlitsize);
  VERIFY( std::strncmp(strlit, buf, strlitsize) == 0 );
}

int main() 
{
  test03();
  return 0;
}