Original patch from gentoo: gentoo/src/patchsets/gdb/6.7/80_all_gdb-6.5-dwarf-stack-overflow.patch

 -= BEGIN original header =-

 http://bugs.gentoo.org/144833

 for gdb/ChangeLog:

 2006-08-22  Will Drewry <wad@google.com>

 	    Tavis Ormandy <taviso@google.com>

 	* dwarf2read.c (decode_locdesc): Enforce location description stack

 	boundaries.

 	* dwarfread.c (locval): Likewise.

 -= END original header =-

 diff -durN gdb-6.7.orig/gdb/dwarf2read.c gdb-6.7/gdb/dwarf2read.c

 --- gdb-6.7.orig/gdb/dwarf2read.c	2007-09-05 02:51:48.000000000 +0200

 +++ gdb-6.7/gdb/dwarf2read.c	2008-06-17 23:25:38.000000000 +0200

 @@ -9061,8 +9061,7 @@

     callers will only want a very basic result and this can become a

     complaint.

 -   Note that stack[0] is unused except as a default error return.

 -   Note that stack overflow is not yet handled.  */

 +   Note that stack[0] is unused except as a default error return. */

  static CORE_ADDR

  decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu)

 @@ -9079,7 +9078,7 @@

    i = 0;

    stacki = 0;

 -  stack[stacki] = 0;

 +  stack[++stacki] = 0;

    while (i < size)

      {

 @@ -9261,6 +9260,16 @@

  		     dwarf_stack_op_name (op));

  	  return (stack[stacki]);

  	}

 +      /* Enforce maximum stack depth of size-1 to avoid ++stacki writing

 +         outside of the allocated space. Also enforce minimum > 0.

 +         -- wad@google.com 14 Aug 2006 */

 +      if (stacki >= sizeof (stack) / sizeof (*stack) - 1)

 +	internal_error (__FILE__, __LINE__,

 +	                _("location description stack too deep: %d"),

 +	                stacki);

 +      if (stacki <= 0)

 +	internal_error (__FILE__, __LINE__,

 +	                _("location description stack too shallow"));

      }

    return (stack[stacki]);

  }