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)
70 lbreak = (PTR_T)sbrk (0);
73 return (char *)sbrk (0) - (char *)lbreak;
77 /* Return a pointer to free()able block of memory large enough
78 to hold BYTES number of bytes. If the memory cannot be allocated,
79 print an error message and abort. */
86 temp = malloc (bytes);
90 #if defined (HAVE_SBRK)
91 allocated = findbrk ();
92 fatal_error (_("xmalloc: cannot allocate %lu bytes (%lu bytes allocated)"), (unsigned long)bytes, (unsigned long)allocated);
94 fatal_error (_("xmalloc: cannot allocate %lu bytes"), (unsigned long)bytes);
95 #endif /* !HAVE_SBRK */
102 xrealloc (pointer, bytes)
108 temp = pointer ? realloc (pointer, bytes) : malloc (bytes);
112 #if defined (HAVE_SBRK)
113 allocated = findbrk ();
114 fatal_error (_("xrealloc: cannot reallocate %lu bytes (%lu bytes allocated)"), (unsigned long)bytes, (unsigned long)allocated);
116 fatal_error (_("xrealloc: cannot allocate %lu bytes"), (unsigned long)bytes);
117 #endif /* !HAVE_SBRK */
123 /* Use this as the function to call when adding unwind protects so we
124 don't need to know what free() returns. */
133 #ifdef USING_BASH_MALLOC
134 #include <malloc/shmalloc.h>
137 sh_xmalloc (bytes, file, line)
144 temp = sh_malloc (bytes, file, line);
148 #if defined (HAVE_SBRK)
149 allocated = findbrk ();
150 fatal_error (_("xmalloc: %s:%d: cannot allocate %lu bytes (%lu bytes allocated)"), file, line, (unsigned long)bytes, (unsigned long)allocated);
152 fatal_error (_("xmalloc: %s:%d: cannot allocate %lu bytes"), file, line, (unsigned long)bytes);
153 #endif /* !HAVE_SBRK */
160 sh_xrealloc (pointer, bytes, file, line)
168 temp = pointer ? sh_realloc (pointer, bytes, file, line) : sh_malloc (bytes, file, line);
172 #if defined (HAVE_SBRK)
173 allocated = findbrk ();
174 fatal_error (_("xrealloc: %s:%d: cannot reallocate %lu bytes (%lu bytes allocated)"), file, line, (unsigned long)bytes, (unsigned long)allocated);
176 fatal_error (_("xrealloc: %s:%d: cannot allocate %lu bytes"), file, line, (unsigned long)bytes);
177 #endif /* !HAVE_SBRK */
184 sh_xfree (string, file, line)
190 sh_free (string, file, line);