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git.ipfire.org Git - thirdparty/bash.git/blob - xmalloc.c
1 /* xmalloc.c -- safe versions of malloc and realloc */
3 /* Copyright (C) 1991 Free Software Foundation, Inc.
5 This file is part of GNU Readline, a library for reading lines
6 of text with interactive input and history editing.
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 1, or (at your option) any
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.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
22 #if defined (HAVE_CONFIG_H)
26 #include "bashtypes.h"
29 #if defined (HAVE_UNISTD_H)
33 #if defined (HAVE_STDLIB_H)
36 # include "ansi_stdlib.h"
37 #endif /* HAVE_STDLIB_H */
42 # if defined (__STDC__)
46 # endif /* !__STDC__ */
49 #if !defined (SBRK_DECLARED)
55 static size_t allocated
;
57 /* **************************************************************** */
59 /* Memory Allocation and Deallocation. */
61 /* **************************************************************** */
63 /* Return a pointer to free()able block of memory large enough
64 to hold BYTES number of bytes. If the memory cannot be allocated,
65 print an error message and abort. */
72 temp
= (char *)malloc (bytes
);
78 lbreak
= (PTR_T
)sbrk (0);
81 allocated
= (char *)sbrk (0) - (char *)lbreak
;
82 fatal_error ("xmalloc: cannot allocate %lu bytes (%lu bytes allocated)", (unsigned long)bytes
, (unsigned long)allocated
);
89 xrealloc (pointer
, bytes
)
95 temp
= pointer
? (char *)realloc (pointer
, bytes
) : (char *)malloc (bytes
);
101 lbreak
= (PTR_T
)sbrk (0);
104 allocated
= (char *)sbrk (0) - (char *)lbreak
;
105 fatal_error ("xrealloc: cannot reallocate %lu bytes (%lu bytes allocated)", (unsigned long)bytes
, (unsigned long)allocated
);
111 /* Use this as the function to call when adding unwind protects so we
112 don't need to know what free() returns. */