GNU bug report logs - #1076
Looping in redisplay due to font problem

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Package: emacs;

Reported by: Chong Yidong <cyd <at> stupidchicken.com>

Date: Fri, 3 Oct 2008 16:25:04 UTC

Severity: normal

Merged with 1070, 1071, 1097, 1101, 1105

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

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Report forwarded to bug-submit-list <at> lists.donarmstrong.com, Emacs Bugs <bug-gnu-emacs <at> gnu.org>:
bug#1076; Package emacs. Full text and rfc822 format available.
Acknowledgement sent to Chong Yidong <cyd <at> stupidchicken.com>:
New bug report received and forwarded. Copy sent to Emacs Bugs <bug-gnu-emacs <at> gnu.org>. Full text and rfc822 format available.

Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Kenichi Handa <handa <at> m17n.org>
Cc: emacs-pretest-bug <at> gnu.org
Subject: Re: Looping in redisplay due to font problem
Date: Fri, 03 Oct 2008 12:18:18 -0400

Kenichi Handa <handa <at> m17n.org> writes:

> That's a very strange phenomenon.  But, I can't reproduce
> it.  When I hit PageDown four times, the top line is "Luxi
> Sans:style=Regular", and "Corsivo" appears on the 9th line
> (logically 8th line because of continuation).
>
> In my case, this font is selected for the default case:
>
> -bitstream-Bitstream Vera Sans
> Mono-normal-normal-normal-*-16-*-*-*-m-0-iso10646-1
>
> Which font is selected in your case?

C-u C-x = gives

-unknown-DejaVu Sans Mono-normal-normal-normal-*-16-*-*-*-m-0-iso10646-1

> And, what does "Emacs begins looping while in redisplay" exactly mean?

Emacs is unresponsive to any further input, and the character "o" in
"Corsivo" flickers.  Interrupting the loop in gdb gives the following
backtrace.  It seems to be stuck in an Xft function.

#0  0x00007f54662e1433 in select () from /lib/libc.so.6
#1  0x00007f546403b2b6 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f546403b8eb in ?? () from /usr/lib/libxcb.so.1
#3  0x00007f546403c050 in xcb_send_request () from /usr/lib/libxcb.so.1
#4  0x00007f5466e71f1a in _XPutXCBBuffer () from /usr/lib/libX11.so.6
#5  0x00007f5466e72267 in ?? () from /usr/lib/libX11.so.6
#6  0x00007f54650be5a3 in XRenderFillRectangle () from /usr/lib/libXrender.so.1
#7  0x00007f5466c1f5b1 in XftDrawRect () from /usr/lib/libXft.so.2
#8  0x0000000000656080 in xftfont_draw (s=0x7fff725843b0, from=0, to=1, x=100, 
    y=175, with_background=1) at xftfont.c:549
#9  0x00000000004e0268 in x_draw_glyph_string_foreground (s=0x7fff725843b0)
    at xterm.c:1316
#10 0x00000000004e374c in x_draw_glyph_string (s=0x7fff725843b0)
    at xterm.c:2708
#11 0x00000000004616f1 in draw_glyphs (w=0x17ec430, x=110, row=0x1f49b20, 
    area=TEXT_AREA, start=7, end=8, hl=DRAW_NORMAL_TEXT, overlaps=0)
    at xdisp.c:20504
#12 0x0000000000466ec1 in x_write_glyphs (start=0x145f748, len=1)
    at xdisp.c:21913
#13 0x0000000000418fa4 in update_text_area (w=0x17ec430, vpos=8)
    at dispnew.c:4584
...
Merged 1070 1071 1076. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> emacsbugs.donarmstrong.com. (Fri, 03 Oct 2008 17:05:05 GMT) Full text and rfc822 format available.
Merged 1070 1071 1076 1097. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> emacsbugs.donarmstrong.com. (Mon, 06 Oct 2008 06:15:04 GMT) Full text and rfc822 format available.
Merged 1070 1071 1076 1097 1101. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> emacsbugs.donarmstrong.com. (Mon, 06 Oct 2008 16:55:07 GMT) Full text and rfc822 format available.
Merged 1070 1071 1076 1097 1101 1105. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> emacsbugs.donarmstrong.com. (Tue, 07 Oct 2008 17:35:04 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <don <at> donarmstrong.com> to internal_control <at> emacsbugs.donarmstrong.com. (Fri, 07 Nov 2008 15:24:03 GMT) Full text and rfc822 format available.
This bug report was last modified 16 years and 286 days ago.

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