9404-2.cc

linux下编程用 编译软件

// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.

// 27.7.1.3 Overridden virtual functions

#include <sstream>
#include <testsuite_hooks.h>

bool over_called;

class Derived_stringbuf : public std::stringbuf
{
public:
  int_type overflow(int_type c)
  {
    over_called = true;
    return std::stringbuf::overflow(c);
  }
  
  const char_type* pub_epptr() const
  {
    return epptr();
  }
  
  const char_type* pub_pptr() const
  {
    return pptr();
  }
};

// libstdc++/9404
void test04()
{
  bool test __attribute__((unused)) = true;

  bool over_expected;
  Derived_stringbuf dsbuf_01;

  // sputn
  Derived_stringbuf dsbuf_02;
  over_called = false;
  dsbuf_02.sputn("sonne's", 7);
  VERIFY( over_called );
  over_expected = dsbuf_02.pub_epptr() == dsbuf_02.pub_pptr();
  over_called = false;
  dsbuf_02.sputn(" peak", 5);
  VERIFY( (!over_expected && !over_called)
	  || (over_expected && over_called) );
  VERIFY( dsbuf_02.str() == "sonne's peak" ); // Sanity check.
}

int main() 
{
  test04();
  return 0;
}