3.cc

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

// 1999-06-04 bkoz

// Copyright (C) 1999, 2000, 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.

// 21.3.1 basic_string constructors.

#include <new>
#include <string>
#include <stdexcept>
#include <testsuite_hooks.h>

void test03()
{
  bool test __attribute__((unused)) = true;
  const wchar_t* with_nulls = L"This contains \0 a zero byte.";

  // These are tests to see how basic_string handles data with NUL
  // bytes.  Obviously basic_string(char*) will halt at the first one, but
  // nothing else should.
  std::wstring s1 (with_nulls, 28);
  VERIFY( s1.size() == 28 );
  std::wstring s2 (s1);
  VERIFY( s2.size() == 28 );

  // Not defined, but libstdc++ throws an exception.
  const wchar_t* bogus = 0;
  try 
    {
      std::wstring str1(bogus);
      VERIFY( false );
    }		 
  catch(std::exception& fail) 
    {
      VERIFY( true );
    }

  // Not defined, but libstdc++ throws an exception.
  try 
    {
      std::wstring str2(bogus, 5);
      VERIFY( false );
    }		 
  catch(std::exception& fail) 
    {
      VERIFY( true );
    }
}

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