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From: Michael Welsh Duggan <md5i@md5i.com>
To: 5060@emacsbugs.donarmstrong.com
Subject: bug#5060: More debugging information
Date: Fri, 27 Nov 2009 23:07:57 -0500	[thread overview]
Message-ID: <874oofl2aq.fsf@maru.md5i.com> (raw)

Shortly before the failure occurs, gdb-frame-handler is called.  In the
context of the failure, the frame variable is set to:

  ((line . "29") (file . "longjmp.c") (func . "__libc_siglongjmp") 
   (addr . "0xb79ef6c1") (level . "0"))

gdb-selected-file is nil, since there is no 'fullname.
gdb-selected-line gets 29.  So, gud-last-frame is '(nil . 29).
gud-display-frame is then called, which calls gud-display-line with the
args from gud-last frame.  I.e., (gud-display-frame nil 29).  This nil
is what is later causing problems when gud-find-file is called.

My guess is that gud-display-frame should not be called if
gdb-selected-file is nil.  But I do not understand the code well enough
to know that this is the case.

-- 
Michael Welsh Duggan
(md5i@md5i.com)





             reply	other threads:[~2009-11-28  4:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-28  4:07 Michael Welsh Duggan [this message]
2009-11-29  0:36 ` bug#5060: More debugging information Nick Roberts
2009-11-30  3:59   ` Michael Welsh Duggan

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