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来自「xml大全 可读写调用率很高 xml大全 可读写调用率很高」· CC 代码 · 共 60 行

// 1999-08-16 bkoz

// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation
//
// 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.

// 27.6.2.5.4 basic_ostream character inserters

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

void test08()
{
  bool test __attribute__((unused)) = true;
  char* pt = NULL;

  // 2
  std::wostringstream woss;
  woss << pt;
  VERIFY( woss.bad() );
  VERIFY( woss.str().size() == 0 );

  woss.clear();
  woss << "";
  VERIFY( woss.good() );

  // 3
  wchar_t* wt = NULL;
  woss.clear();
  woss << wt;
  VERIFY( woss.bad() );
  VERIFY( woss.str().size() == 0 );

  woss.clear();
  woss << L"";
  VERIFY( woss.good() );
}

int main()
{
  test08();
  return 0;
}