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501e6d5a C |
1 | /* xrealloc.c -new memory or bust- |
2 | Copyright (C) 1987 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS 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 1, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS 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 GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | /* | |
22 | ||
23 | NAME | |
24 | xrealloc () - get more memory or bust | |
25 | INDEX | |
26 | xrealloc () uses realloc () | |
27 | SYNOPSIS | |
28 | char *my_memory; | |
29 | ||
30 | my_memory = xrealloc (my_memory, 42); | |
31 | / * my_memory gets (perhaps new) address of 42 chars * / | |
32 | ||
33 | DESCRIPTION | |
34 | ||
35 | Use xrealloc () as an "error-free" realloc ().It does almost the same | |
36 | job. When it cannot honour your request for memory it BOMBS your | |
37 | program with a "virtual memory exceeded" message. Realloc() returns | |
38 | NULL and does not bomb your program. | |
39 | ||
40 | SEE ALSO | |
41 | realloc () | |
42 | */ | |
43 | ||
44 | #ifdef USG | |
45 | #include <malloc.h> | |
46 | #endif | |
47 | ||
48 | char * | |
49 | xrealloc (ptr, n) | |
50 | register char *ptr; | |
51 | long n; | |
52 | { | |
53 | char *realloc (); | |
54 | void error(); | |
55 | ||
56 | if ((ptr = realloc (ptr, (unsigned)n)) == 0) | |
57 | error ("virtual memory exceeded"); | |
58 | return (ptr); | |
59 | } | |
60 | ||
61 | /* end: xrealloc.c */ |