gnu/dist/texinfo/lib/xmalloc.c

   1 /*      $NetBSD$        */
   2
   3 /* xmalloc.c -- safe versions of malloc and realloc.
   4
   5    Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 2004 Free Software
   6    Foundation, Inc.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21
  22    Written by Brian Fox (bfox@ai.mit.edu). */
  23
  24 #if !defined (ALREADY_HAVE_XMALLOC)
  25 #include "system.h"
  26
  27 static void
  28 memory_error_and_abort (const char *fname)
  29 {
  30   fprintf (stderr, "%s: Out of virtual memory!\n", fname);
  31   abort ();
  32 }
  33
  34 /* Return a pointer to free()able block of memory large enough
  35    to hold BYTES number of bytes.  If the memory cannot be allocated,
  36    print an error message and abort. */
  37 void *
  38 xmalloc (size_t bytes)
  39 {
  40   void *temp = malloc (bytes);
  41
  42   if (!temp)
  43     memory_error_and_abort ("xmalloc");
  44   return (temp);
  45 }
  46
  47 void *
  48 xrealloc (void *pointer, size_t bytes)
  49 {
  50   void *temp;
  51
  52   if (!pointer)
  53     temp = malloc (bytes);
  54   else
  55     temp = realloc (pointer, bytes);
  56
  57   if (!temp)
  58     memory_error_and_abort ("xrealloc");
  59
  60   return (temp);
  61 }
  62
  63 #endif /* !ALREADY_HAVE_XMALLOC */