1 /* xmalloc.c -- safe versions of malloc and realloc */
3 /* Copyright (C) 1991-2009 Free Software Foundation, Inc.
5 This file is part of GNU Bash, the GNU Bourne Again SHell.
7 Bash is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 Bash is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Bash. If not, see <http://www.gnu.org/licenses/>.
21 #if defined (HAVE_CONFIG_H)
25 #include "bashtypes.h"
28 #if defined (HAVE_UNISTD_H)
32 #if defined (HAVE_STDLIB_H)
35 # include "ansi_stdlib.h"
36 #endif /* HAVE_STDLIB_H */
43 # if defined (__STDC__)
47 # endif /* !__STDC__ */
50 #if defined (HAVE_SBRK) && !HAVE_DECL_SBRK
56 static size_t allocated;
58 /* **************************************************************** */
60 /* Memory Allocation and Deallocation. */
62 /* **************************************************************** */
64 #if defined (HAVE_SBRK)
69 lbreak = (PTR_T)sbrk (0); \
78 return (char *)sbrk (0) - (char *)lbreak;
85 allocerr (func, bytes)
89 #if defined (HAVE_SBRK)
90 allocated = findbrk ();
91 fatal_error (_("%s: cannot allocate %lu bytes (%lu bytes allocated)"), func, (unsigned long)bytes, (unsigned long)allocated);
93 fatal_error (_("%s: cannot allocate %lu bytes"), func, (unsigned long)bytes);
94 #endif /* !HAVE_SBRK */
97 /* Return a pointer to free()able block of memory large enough
98 to hold BYTES number of bytes. If the memory cannot be allocated,
99 print an error message and abort. */
108 internal_warning("xmalloc: size argument is 0");
112 temp = malloc (bytes);
115 allocerr ("xmalloc", bytes);
121 xrealloc (pointer, bytes)
129 internal_warning("xrealloc: size argument is 0");
133 temp = pointer ? realloc (pointer, bytes) : malloc (bytes);
136 allocerr ("xrealloc", bytes);
141 /* Use this as the function to call when adding unwind protects so we
142 don't need to know what free() returns. */
151 #ifdef USING_BASH_MALLOC
152 #include <malloc/shmalloc.h>
155 sh_allocerr (func, bytes, file, line)
161 #if defined (HAVE_SBRK)
162 allocated = findbrk ();
163 fatal_error (_("%s: %s:%d: cannot allocate %lu bytes (%lu bytes allocated)"), func, file, line, (unsigned long)bytes, (unsigned long)allocated);
165 fatal_error (_("%s: %s:%d: cannot allocate %lu bytes"), func, file, line, (unsigned long)bytes);
166 #endif /* !HAVE_SBRK */
170 sh_xmalloc (bytes, file, line)
179 internal_warning("xmalloc: %s:%d: size argument is 0", file, line);
183 temp = sh_malloc (bytes, file, line);
186 sh_allocerr ("xmalloc", bytes, file, line);
192 sh_xrealloc (pointer, bytes, file, line)
202 internal_warning("xrealloc: %s:%d: size argument is 0", file, line);
206 temp = pointer ? sh_realloc (pointer, bytes, file, line) : sh_malloc (bytes, file, line);
209 sh_allocerr ("xrealloc", bytes, file, line);
215 sh_xfree (string, file, line)
221 sh_free (string, file, line);