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/* xmalloc.c -- malloc with out of memory checking
Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc.
This program 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 program 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 program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#if __STDC__
#define VOID void
#else
#define VOID char
#endif
#include <sys/types.h>
#if STDC_HEADERS
#include <stdlib.h>
#else
VOID *malloc ();
VOID *realloc ();
void free ();
#endif
/* This is for other GNU distributions with internationalized messages.
The GNU C Library itself does not yet support such messages. */
#if HAVE_LIBINTL_H
# include <libintl.h>
#else
# define gettext(msgid) (msgid)
#endif
#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif
/* Exit value when the requested amount of memory is not available.
The caller may set it to some other value. */
int xmalloc_exit_failure = EXIT_FAILURE;
#if __STDC__ && (HAVE_VPRINTF || HAVE_DOPRNT)
void error (int, int, const char *, ...);
#else
void error ();
#endif
static VOID *
fixup_null_alloc (n)
size_t n;
{
VOID *p;
p = 0;
if (n == 0)
p = malloc ((size_t) 1);
if (p == 0)
error (xmalloc_exit_failure, 0, gettext ("Memory exhausted"));
return p;
}
/* Allocate N bytes of memory dynamically, with error checking. */
VOID *
xmalloc (n)
size_t n;
{
VOID *p;
p = malloc (n);
if (p == 0)
p = fixup_null_alloc (n);
return p;
}
/* Change the size of an allocated block of memory P to N bytes,
with error checking.
If P is NULL, run xmalloc. */
VOID *
xrealloc (p, n)
VOID *p;
size_t n;
{
if (p == 0)
return xmalloc (n);
p = realloc (p, n);
if (p == 0)
p = fixup_null_alloc (n);
return p;
}
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