gcc-papermario/cp/new1.cc
2020-09-20 21:06:00 -04:00

55 lines
1.7 KiB
C++

// Support routine for the -*- C++ -*- dynamic memory management.
// Copyright (C) 1997 Free Software Foundation
// This file is part of GNU CC.
// GNU CC 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.
// GNU CC 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 GNU CC; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
// As a special exception, if you link this library with other files,
// some of which are compiled with GCC, to produce an executable,
// this library 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.
#include "new"
extern "C" void *malloc (size_t);
typedef void (*vfp)(void);
extern vfp __new_handler;
extern void __default_new_handler (void);
void *operator new (size_t sz, const nothrow_t&) throw()
{
void *p;
vfp handler = __new_handler;
/* malloc (0) is unpredictable; avoid it. */
if (sz == 0)
sz = 1;
p = (void *) malloc (sz);
while (p == 0)
{
if (! handler)
return 0;
(*handler) ();
p = (void *) malloc (sz);
}
return p;
}