[PATCH] Partial fix for PR backtrace/1718

[Mark Kettenis]

   Date: Fri, 30 Jul 2004 21:32:52 +0300
   From: "Eli Zaretskii" <eliz@gnu.org>

   > Date: Sat, 24 Jul 2004 14:59:56 +0200 (CEST)
   > From: Mark Kettenis <kettenis@chello.nl>
   > 
   > This fixes the backtrace problem with Emacs that Eli reported.

   Mark, I reported a few days ago that the patch didn't fix the problem
   for me when I applied it to GDB 6.1.  I asked whether the patch is
   supposed to work with GDB 6.1, but didn't see your reply.  Did I miss
   it?

Oops sorry, no that slipped through.  AFAICT the patch should work
with the GDB 6.1 release.  So there must be something else wrong.
Unforunately I can't really help you here.  Can you try to debug this
yourself.  The question here is why i386_analyze_prologue() which is
called from i386_frame_cache() isn't properly detecting the frame.

Mark