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gdb: add target_ops::supports_displaced_step
[deliverable/binutils-gdb.git]
/
libiberty
/
objalloc.c
diff --git
a/libiberty/objalloc.c
b/libiberty/objalloc.c
index 57754a8610524a59bdb56d35805cb1e4be222ce9..131598f37f4e2755ee6ad25768368c445eab5557 100644
(file)
--- a/
libiberty/objalloc.c
+++ b/
libiberty/objalloc.c
@@
-1,5
+1,5
@@
/* objalloc.c -- routines to allocate memory for objects
/* objalloc.c -- routines to allocate memory for objects
- Copyright
1997
Free Software Foundation, Inc.
+ Copyright
(C) 1997-2020
Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Solutions.
This program is free software; you can redistribute it and/or modify it
Written by Ian Lance Taylor, Cygnus Solutions.
This program is free software; you can redistribute it and/or modify it
@@
-14,10
+14,12
@@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, 5
9 Temple Place - Suite 330
,
-Boston, MA 0211
1-1307
, USA. */
+Foundation, 5
1 Franklin Street - Fifth Floor
,
+Boston, MA 0211
0-1301
, USA. */
+#include "config.h"
#include "ansidecl.h"
#include "ansidecl.h"
+
#include "objalloc.h"
/* Get a definition for NULL. */
#include "objalloc.h"
/* Get a definition for NULL. */
@@
-28,14
+30,17
@@
Boston, MA 02111-1307, USA. */
#include <unixlib.h>
#else
#include <unixlib.h>
#else
-#ifdef ANSI_PROTOTYPES
/* Get a definition for size_t. */
#include <stddef.h>
/* Get a definition for size_t. */
#include <stddef.h>
-#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#else
/* For systems with larger pointers than ints, this must be declared. */
/* For systems with larger pointers than ints, this must be declared. */
-extern PTR malloc PARAMS ((size_t));
-extern void free PARAMS ((PTR));
+extern PTR malloc (size_t);
+extern void free (PTR);
+#endif
+
#endif
/* These routines allocate space for an object. Freeing allocated
#endif
/* These routines allocate space for an object. Freeing allocated
@@
-78,7
+83,7
@@
struct objalloc_chunk
/* Create an objalloc structure. */
struct objalloc *
/* Create an objalloc structure. */
struct objalloc *
-objalloc_create ()
+objalloc_create (
void
)
{
struct objalloc *ret;
struct objalloc_chunk *chunk;
{
struct objalloc *ret;
struct objalloc_chunk *chunk;
@@
-107,10
+112,10
@@
objalloc_create ()
/* Allocate space from an objalloc structure. */
PTR
/* Allocate space from an objalloc structure. */
PTR
-_objalloc_alloc (o, len)
- struct objalloc *o;
- unsigned long len;
+_objalloc_alloc (struct objalloc *o, unsigned long original_len)
{
{
+ unsigned long len = original_len;
+
/* We avoid confusion from zero sized objects by always allocating
at least 1 byte. */
if (len == 0)
/* We avoid confusion from zero sized objects by always allocating
at least 1 byte. */
if (len == 0)
@@
-118,6
+123,11
@@
_objalloc_alloc (o, len)
len = (len + OBJALLOC_ALIGN - 1) &~ (OBJALLOC_ALIGN - 1);
len = (len + OBJALLOC_ALIGN - 1) &~ (OBJALLOC_ALIGN - 1);
+ /* Check for overflow in the alignment operation above and the
+ malloc argument below. */
+ if (len + CHUNK_HEADER_SIZE < original_len)
+ return NULL;
+
if (len <= o->current_space)
{
o->current_ptr += len;
if (len <= o->current_space)
{
o->current_ptr += len;
@@
-164,8
+174,7
@@
_objalloc_alloc (o, len)
/* Free an entire objalloc structure. */
void
/* Free an entire objalloc structure. */
void
-objalloc_free (o)
- struct objalloc *o;
+objalloc_free (struct objalloc *o)
{
struct objalloc_chunk *l;
{
struct objalloc_chunk *l;
@@
-186,9
+195,7
@@
objalloc_free (o)
recently allocated blocks. */
void
recently allocated blocks. */
void
-objalloc_free_block (o, block)
- struct objalloc *o;
- PTR block;
+objalloc_free_block (struct objalloc *o, PTR block)
{
struct objalloc_chunk *p, *small;
char *b = (char *) block;
{
struct objalloc_chunk *p, *small;
char *b = (char *) block;
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