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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;
- }
-