1: /* xmalloc.c -- safe versions of malloc and realloc */
2:
3: /* Copyright (C) 1991-2017 Free Software Foundation, Inc.
4:
5: This file is part of the GNU Readline Library (Readline), a library
6: for reading lines of text with interactive input and history editing.
7:
8: Readline 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 3 of the License, or
11: (at your option) any later version.
12:
13: Readline 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 Readline. If not, see <http://www.gnu.org/licenses/>.
20: */
21:
22: #define READLINE_LIBRARY
23:
24: #if defined (HAVE_CONFIG_H)
25: #include <config.h>
26: #endif
27:
28: #include <stdio.h>
29:
30: #if defined (HAVE_STDLIB_H)
31: # include <stdlib.h>
32: #else
33: # include "ansi_stdlib.h"
34: #endif /* HAVE_STDLIB_H */
35:
36: #include "xmalloc.h"
37:
38: /* **************************************************************** */
39: /* */
40: /* Memory Allocation and Deallocation. */
41: /* */
42: /* **************************************************************** */
43:
44: static void
45: memory_error_and_abort (char *fname)
46: {
47: fprintf (stderr, "%s: out of virtual memory\n", fname);
48: exit (2);
49: }
50:
51: /* Return a pointer to free()able block of memory large enough
52: to hold BYTES number of bytes. If the memory cannot be allocated,
53: print an error message and abort. */
54: PTR_T
55: xmalloc (size_t bytes)
56: {
57: PTR_T temp;
58:
59: temp = malloc (bytes);
60: if (temp == 0)
61: memory_error_and_abort ("xmalloc");
62: return (temp);
63: }
64:
65: PTR_T
66: xrealloc (PTR_T pointer, size_t bytes)
67: {
68: PTR_T temp;
69:
70: temp = pointer ? realloc (pointer, bytes) : malloc (bytes);
71:
72: if (temp == 0)
73: memory_error_and_abort ("xrealloc");
74: return (temp);
75: }
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