backtrace/2224: backtrace doesn't work with bochs stub anymore

[Daniel Jacobowitz]

The following reply was made to PR backtrace/2224; it has been noted by GNATS.

From: Daniel Jacobowitz <drow@false.org>
To: godmar@gmail.com
Cc: gdb-gnats@sources.redhat.com
Subject: Re: backtrace/2224: backtrace doesn't work with bochs stub anymore
Date: Tue, 6 Feb 2007 22:10:51 -0500

 On Wed, Feb 07, 2007 at 03:07:09AM -0000, godmar@gmail.com wrote:
 > gdb used to show backtraces when used with bochs 2.2.6. It did so in
 > version 6.3.0.0 shipped with FC4. It fails to do so with 6.5-15,
 > shipped with FC6.
 > 
 > The reason, I speculate, is that bochs sends the following reply to
 > the $qOffsets query:
 > 
 > $Text=0;Data=0;Bss=0#
 
 That should be fine.
 
 > qemu, on the other hand, simply ignores the qOffsets query, but on
 > qemu, backtrace works.
 > 
 > With bochs, gdb 6.5 never sends the necessary $m's to examine the backtrace.
 > See:
 
 Missing URL?  Sorry, there isn't enough information here to reproduce
 the problem.  Run _what_ in bochs?
 
 Please post a small test case and the complete text of your session.
 
 -- 
 Daniel Jacobowitz
 CodeSourcery