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// 1999-10-11 bkoz

// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004

// 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.

// 27.5.2 template class basic_streambuf

#include <streambuf>

#include <string>

#include <testsuite_hooks.h>

class setpbuf : public std::wstreambuf

{

  wchar_t       buffer[4];

  std::wstring  result;

public:

  std::wstring&

  get_result()

  { return result; }

  setpbuf()

  {

    wchar_t foo[32];

    setp(foo, foo + 32);

    setp(buffer, buffer + 4);

  }

  ~setpbuf()

  { sync(); }

  virtual int_type

  overflow(int_type n)

  {

    if (sync() != 0)

      return traits_type::eof();

    result += traits_type::to_char_type(n);

    return n;

  }

  virtual int

  sync()

  {

    result.append(pbase(), pptr());

    setp(buffer, buffer + 4);

    return 0;

  }

};

// libstdc++/1057

void test04()

{

  bool test __attribute__((unused)) = true;

  std::wstring text = L"abcdefghijklmn";

  // 01

  setpbuf sp1;

  // Here xsputn writes over sp1.result

  sp1.sputn(text.c_str(), text.length());

  // This crashes when result is accessed

  sp1.pubsync();

  VERIFY( sp1.get_result() == text );

  // 02

  setpbuf sp2;

  for (std::wstring::size_type i = 0; i < text.length(); ++i)

    {

      // sputc also writes over result

      sp2.sputc(text[i]);

    }

  // Crash here

  sp2.pubsync();

  VERIFY( sp2.get_result() == text );

}

int main()

{

  test04();

  return 0;

}