From: "Jan Djärv" <jan.h.d@swipnet.se>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Jules Colding <colding@venalicium.dk>, 16049-done@debbugs.gnu.org
Subject: bug#16049: 24.3.50; xdisp.c infloop on Mac OS X 10.9
Date: Sat, 7 Dec 2013 15:26:46 +0100 [thread overview]
Message-ID: <D2DAF8CF-CD2A-4B3B-9A63-C1A7133F674C@swipnet.se> (raw)
In-Reply-To: <83zjodyqa9.fsf@gnu.org>
Hello.
7 dec 2013 kl. 10:16 skrev Eli Zaretskii <eliz@gnu.org>:
>> From: Jan Djärv <jan.h.d@swipnet.se>
>> Date: Sat, 7 Dec 2013 09:25:29 +0100
>> Cc: Eli Zaretskii <eliz@gnu.org>,
>> Jules Colding <colding@venalicium.dk>,
>> 16049@debbugs.gnu.org
>>
>> Next problem, infloop in move_it_vertically_backward, xdisp.c
>>
>> It just keeps going back to move_further_back: but no values are actually changed in the code inbetween. I don't know whats bad here, values looks fine to me. window_box_height is called
>> and returns 490, which is the pixel size.
>>
>> Backtrace:
>
> Here's one sign of the trouble:
>
>> nchars_per_row = 0
>
> This is the number of canonical-width characters that fit in a full
> screen line, which obviously cannot be zero. It is computed at the
> beginning of move_it_vertically_backward like this:
>
> int nchars_per_row
> = (it->last_visible_x - it->first_visible_x) / FRAME_COLUMN_WIDTH (it->f);
>
> So now we look for the values of it->last_visible_x and
> it->first_visible_x. The contents of it are not available in "bt
> full", but there are locals it2 and it3, which use copies of the same
> metrics. And here we find this:
>
> first_visible_x = 2147483643,
> last_visible_x = 2147483642,
>
> which is obviously bogus, since those are supposed to be the pixel
> coordinates of the first screen-line pixel shown at the left edge of
> the window (usually zero, but can be positive when lines are truncated
> and the window is hscrolled), and of the last screen-line pixel shown
> at the right edge.
There was a mixup with pixels and columns. I think I fixed this now, but I will have to adjust for GNUStep. But I'm closing this bug.
Thanks Eli and Martin for all the help.
Jan D.
next prev parent reply other threads:[~2013-12-07 14:26 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-04 14:06 bug#16049: 24.3.50; Crash on startup on Mac OS X 10.9 Jules Colding
2013-12-04 14:39 ` martin rudalics
2013-12-04 16:44 ` Jan Djärv
2013-12-04 18:06 ` martin rudalics
2013-12-04 19:39 ` Jules Colding
2013-12-05 7:00 ` martin rudalics
2013-12-05 6:01 ` Jan Djärv
2013-12-05 7:00 ` martin rudalics
2013-12-05 17:35 ` Jan Djärv
2013-12-05 17:43 ` Jan Djärv
2013-12-05 18:13 ` martin rudalics
2013-12-05 19:55 ` Jan Djärv
2013-12-05 18:19 ` Eli Zaretskii
2013-12-05 19:59 ` Jan Djärv
2013-12-05 20:20 ` Eli Zaretskii
2013-12-06 18:32 ` Jan Djärv
2013-12-06 18:56 ` martin rudalics
2013-12-07 8:25 ` bug#16049: 24.3.50; xdisp.c infloop " Jan Djärv
2013-12-07 9:16 ` Eli Zaretskii
2013-12-07 14:26 ` Jan Djärv [this message]
2013-12-07 14:42 ` martin rudalics
2013-12-07 14:57 ` Jules Colding
2013-12-07 15:57 ` Jules Colding
2013-12-05 17:59 ` bug#16049: 24.3.50; Crash on startup " martin rudalics
2013-12-05 18:20 ` Eli Zaretskii
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