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From: Martin Buchholz <mrb@Eng.Sun.COM>
To: Colin Rafferty <craffert@ml.com>
Cc: XEmacs Beta List <xemacs-beta@xemacs.org>
Subject: Re: 20.3-b23 crash on Solaris and sparcworks
In-Reply-To: <ocrraad5v74.fsf@ml.com>
References: <14437.875111890@rtp.ericsson.se>
	<m2n2l2hzxy.fsf@altair.xemacs.org>
	<ocrraad5v74.fsf@ml.com>
X-Mailer: VM 6.33 under 20.3 "Vienna" XEmacs  Lucid (beta14)
Reply-To: Martin Buchholz <mrb@Eng.Sun.COM>

>>>>> "Colin" == Colin Rafferty <craffert@ml.com> writes:

Colin> SL Baur writes:
>> Raymond Toy <toy@rtp.ericsson.se> writes:

>>> One person here at causes XEmacs 19.14, 19.15, 20.2, and 20.3-b23 to
>>> crash when dragging the scrollbar when using sparcworks debugger.
>>> The crash is repeatable, but it happens at random times when dragging
>>> the scrollbar.

>>> #3  0x16b86c in add_margin_runes (dl=0x7f41f8, db=0x77f7d0, start=4, count=1, glyph_type=1, side=2, window=274385920)
>>> at /home/unix/toy/apps/xemacs-20.3-b23/src/redisplay.c:2755

>> There have been dozens (if not hundreds -- I didn't have access to the
>> bug reports in the summer after 19.14 release) of reports of crashes
>> at this line, all on Suns.  Maybe someday someone with a Sun will
>> figure out what the problem is.

I have never been able to reproduce this.  I fixed a scrollbar crash
that was typically reproduced using the file dialog box, but this must
be a different one...  To be fair, I think it's an XEmacs bug proper,
not a Sparcworks integration bug.  Any app that stretches XEmacs'
capabilities is more likely to cause crashes - W3 is XEmacs' best
testcase.

Colin> Of course it's only on SUNs -- sparcworks only runs on a SUN.

Colin> My solution to this problem is similar to Rick Cambell's solution.

Colin> Maybe someone that actually cares about sparcworks working properly can
Colin> fix this bug.  After that, maybe he can also fix sparcworks to allow the 
Colin> dbx window and process i/o window to be XEmacs buffers, and then people
Colin> will want to use sparcworks.

I agree with you, and would like to work on fixing it, but it's
unfortunately not likely to happen....

Martin

