src/allocate.c

   1 /* Allocate and clear storage for bison,
   2    Copyright (C) 1984, 1989 Free Software Foundation, Inc.
   3
   4 This file is part of Bison, the GNU Compiler Compiler.
   5
   6 Bison is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 Bison is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with Bison; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 #include <stdio.h>
  22 #include "system.h"
  23
  24 extern char *calloc ();
  25 extern char *realloc ();
  26 extern void done ();
  27
  28 extern char *program_name;
  29
  30 char *
  31 xmalloc (n)
  32      register unsigned n;
  33 {
  34   register char *block;
  35
  36   /* Avoid uncertainty about what an arg of 0 will do.  */
  37   if (n == 0)
  38     n = 1;
  39   block = calloc (n, 1);
  40   if (block == NULL)
  41     {
  42       fprintf (stderr, _("%s: memory exhausted\n"), program_name);
  43       done (1);
  44     }
  45
  46   return (block);
  47 }
  48
  49 char *
  50 xrealloc (block, n)
  51      register char *block;
  52      register unsigned n;
  53 {
  54   /* Avoid uncertainty about what an arg of 0 will do.  */
  55   if (n == 0)
  56     n = 1;
  57   block = realloc (block, n);
  58   if (block == NULL)
  59     {
  60       fprintf (stderr, _("%s: memory exhausted\n"), program_name);
  61       done (1);
  62     }
  63
  64   return (block);
  65 }