/* xmalloc.c -- malloc with out of memory checking   Copyright (C) 1990, 1991, 1993 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>#elseVOID *malloc ();VOID *realloc ();void free ();#endif #if __STDC__ && defined (HAVE_VPRINTF)void error (int, int, char const *, ...);#elsevoid error ();#endif /* Allocate N bytes of memory dynamically, with error checking.  */ VOID *xmalloc (n)     size_t n;{  VOID *p;   p = malloc (n);  if (p == 0)    /* Must exit with 2 for `cmp'.  */    error (2, 0, "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.  */ VOID *xrealloc (p, n)     VOID *p;     size_t 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, "memory exhausted");  return p;}