1.cc

linux下编程用 编译软件

// 1999-09-20 bkoz

// Copyright (C) 1999, 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.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

// 27.4.4.2 basic_ios member functions

// NB: Don't include any other headers in this file.
#include <ios>
#include <testsuite_hooks.h>

// 27.4.4.3 basic_ios iostate flags function
void test01()
{
  bool test __attribute__((unused)) = true;

  typedef std::ios_base::fmtflags fmtflags;
  typedef std::ios_base::iostate iostate;
  using std::ios_base;

  iostate iostate02, iostate03;
  const iostate iostate01 = std::ios_base::badbit | std::ios_base::eofbit;
  std::ios ios_01(NULL);

  // bool fail() const
  VERIFY( ios_01.fail() );

  // bool operator!() const
  VERIFY( !ios_01 );
  
  // iostate rdstate() const
  iostate03 = ios_01.rdstate();
  VERIFY( static_cast<bool>(iostate03 & std::ios_base::badbit) );

  // void clear(iostate state = goodbit)
  try {
    ios_01.clear(std::ios_base::eofbit);
    iostate02 = ios_01.rdstate();
    VERIFY( static_cast<bool>(iostate02 & iostate01) );
  }		 
  catch(std::ios_base::failure& fail) {
    VERIFY( false );
  }
  catch(...) {
    VERIFY( false );
  }
}

int main() 
{
  test01();
  return 0;
}