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
44static void
45memory_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. */
54PTR_T
55xmalloc (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
65PTR_T
66xrealloc (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}
76