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// Support routines for the -*- C++ -*- dynamic memory management.

// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2004, 2009

// Free Software Foundation

//

// This file is part of GCC.

//

// GCC 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 3, or (at your option)

// any later version.

//

// GCC 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.

//

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

#include <bits/c++config.h>

#include <exception_defines.h>

#include "new"

using std::new_handler;

using std::bad_alloc;

extern "C" void *malloc (std::size_t);

extern new_handler __new_handler;

_GLIBCXX_WEAK_DEFINITION void *

operator new (std::size_t sz, const std::nothrow_t&) throw()

{

  void *p;

  /* malloc (0) is unpredictable; avoid it.  */

  if (sz == 0)

    sz = 1;

  p = (void *) malloc (sz);

  while (p == 0)

    {

      new_handler handler = __new_handler;

      if (! handler)

        return 0;

      __try

        {

          handler ();

        }

      __catch(const bad_alloc&)

        {

          return 0;

        }

      p = (void *) malloc (sz);

    }

  return p;

}