2 2006-08-22 Will Drewry <wad@google.com>
3 Tavis Ormandy <taviso@google.com>
5 * dwarf2read.c (decode_locdesc): Enforce location description stack
7 * dwarfread.c (locval): Likewise.
9 2007-10-15 Jan Kratochvil <jan.kratochvil@redhat.com>
13 Index: gdb-7.1.90.20100711/gdb/dwarf2read.c
14 ===================================================================
15 --- gdb-7.1.90.20100711.orig/gdb/dwarf2read.c 2010-07-12 10:43:53.000000000 +0200
16 +++ gdb-7.1.90.20100711/gdb/dwarf2read.c 2010-07-12 10:49:32.000000000 +0200
17 @@ -11382,8 +11382,7 @@ read_signatured_type (struct objfile *ob
18 callers will only want a very basic result and this can become a
21 - Note that stack[0] is unused except as a default error return.
22 - Note that stack overflow is not yet handled. */
23 + Note that stack[0] is unused except as a default error return. */
26 decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu)
27 @@ -11399,7 +11398,7 @@ decode_locdesc (struct dwarf_block *blk,
32 + stack[++stacki] = 0;
36 @@ -11581,6 +11580,16 @@ decode_locdesc (struct dwarf_block *blk,
37 dwarf_stack_op_name (op, 1));
38 return (stack[stacki]);
40 + /* Enforce maximum stack depth of size-1 to avoid ++stacki writing
41 + outside of the allocated space. Also enforce minimum > 0.
42 + -- wad@google.com 14 Aug 2006 */
43 + if (stacki >= sizeof (stack) / sizeof (*stack) - 1)
44 + internal_error (__FILE__, __LINE__,
45 + _("location description stack too deep: %d"),
48 + internal_error (__FILE__, __LINE__,
49 + _("location description stack too shallow"));
51 return (stack[stacki]);