// Support routines for the -*- C++ -*- dynamic memory management.
// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2009, 2011
// 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 <cstdlib>
#include <bits/exception_defines.h>
#include "new"
using std::new_handler;
using std::bad_alloc;
#if _GLIBCXX_HOSTED
using std::malloc;
#else
// A freestanding C runtime may not provide "malloc" -- but there is no
// other reasonable way to implement "operator new".
extern "C" void *malloc (std::size_t);
#endif
extern new_handler __new_handler;
_GLIBCXX_WEAK_DEFINITION void *
operator new (std::size_t sz) _GLIBCXX_THROW (std::bad_alloc)
{
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)
#ifdef __EXCEPTIONS
throw bad_alloc();
#else
std::abort();
#endif
handler ();
p = (void *) malloc (sz);
}
return p;
}