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- /* xmalloc.c -- malloc with out of memory checking
- Copyright (C) 1990, 1991 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 STDC_HEADERS
- #include <stdlib.h>
- #else
- char *malloc ();
- char *realloc ();
- void free ();
- #endif
-
- void error ();
-
- /* Allocate N bytes of memory dynamically, with error checking. */
-
- char *
- xmalloc (n)
- unsigned n;
- {
- char *p;
-
- p = malloc (n);
- if (p == 0)
- /* Must exit with 2 for `cmp'. */
- error (2, 0, "virtual memory exhausted");
- return p;
- }
-
- /* Change the size of an allocated block of memory P to N bytes,
- with error checking.
- If P is NULL, run xmalloc.
- If N is 0, run free and return NULL. */
-
- char *
- xrealloc (p, n)
- char *p;
- unsigned n;
- {
- if (p == 0)
- return xmalloc (n);
- if (n == 0)
- {
- free (p);
- return 0;
- }
- p = realloc (p, n);
- if (p == 0)
- /* Must exit with 2 for `cmp'. */
- error (2, 0, "virtual memory exhausted");
- return p;
- }
-