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Annotation of GNUtools/bison/allocate.c, revision 1.1

1.1     ! root        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: 
        !            23: extern char *calloc ();
        !            24: extern char *realloc ();
        !            25: extern void done ();
        !            26: 
        !            27: extern char *program_name;
        !            28: 
        !            29: char *
        !            30: xmalloc (n)
        !            31:      register unsigned n;
        !            32: {
        !            33:   register char *block;
        !            34: 
        !            35:   /* Avoid uncertainty about what an arg of 0 will do.  */
        !            36:   if (n == 0)
        !            37:     n = 1;
        !            38:   block = calloc (n, 1);
        !            39:   if (block == NULL)
        !            40:     {
        !            41:       fprintf (stderr, "%s: memory exhausted\n", program_name);
        !            42:       done (1);
        !            43:     }
        !            44: 
        !            45:   return (block);
        !            46: }
        !            47: 
        !            48: char *
        !            49: xrealloc (block, n)
        !            50:      register char *block;
        !            51:      register unsigned n;
        !            52: {
        !            53:   /* Avoid uncertainty about what an arg of 0 will do.  */
        !            54:   if (n == 0)
        !            55:     n = 1;
        !            56:   block = realloc (block, n);
        !            57:   if (block == NULL)
        !            58:     {
        !            59:       fprintf (stderr, "%s: memory exhausted\n", program_name);
        !            60:       done (1);
        !            61:     }
        !            62: 
        !            63:   return (block);
        !            64: }

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