1 /* xmalloc.c -- safe versions of malloc and realloc */
2
3 /* Copyright (C) 1991 Free Software Foundation, Inc.
4
5 This file is part of GNU Readline, a library for reading lines
6 of text with interactive input and history editing.
7
8 Readline is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
11 later version.
12
13 Readline is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with Readline; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
21 #define READLINE_LIBRARY
22
23 #if defined (HAVE_CONFIG_H)
24 #include <config.h>
25 #endif
26
27 #include <stdio.h>
28
29 #if defined (HAVE_STDLIB_H)
30 # include <stdlib.h>
31 #else
32 # include "ansi_stdlib.h"
33 #endif /* HAVE_STDLIB_H */
34
35 #include "xmalloc.h"
36
37 /* **************************************************************** */
38 /* */
39 /* Memory Allocation and Deallocation. */
40 /* */
41 /* **************************************************************** */
42
43 /* Return a pointer to free()able block of memory large enough
44 to hold BYTES number of bytes. If the memory cannot be allocated,
45 print an error message and abort. */
46 PTR_T
xmalloc(bytes)47 xmalloc (bytes)
48 size_t bytes;
49 {
50 PTR_T temp;
51
52 temp = malloc (bytes);
53 if (temp == 0)
54 memory_error_and_abort ("xmalloc");
55 return (temp);
56 }
57
58 PTR_T
xrealloc(pointer,bytes)59 xrealloc (pointer, bytes)
60 PTR_T pointer;
61 size_t bytes;
62 {
63 PTR_T temp;
64
65 temp = pointer ? realloc (pointer, bytes) : malloc (bytes);
66
67 if (temp == 0)
68 memory_error_and_abort ("xrealloc");
69 return (temp);
70 }
71
72 /* Use this as the function to call when adding unwind protects so we
73 don't need to know what free() returns. */
74 void
xfree(string)75 xfree (string)
76 PTR_T string;
77 {
78 if (string)
79 free (string);
80 }
81