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bug#23522: 25.0.93; SEGFAULT when displaying HELLO
From: |
Michael Welsh Duggan |
Subject: |
bug#23522: 25.0.93; SEGFAULT when displaying HELLO |
Date: |
Thu, 12 May 2016 16:49:15 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.92 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Michael Welsh Duggan <mwd@cert.org>
>> Cc: <rgm@gnu.org>, <23522@debbugs.gnu.org>
>> Date: Thu, 12 May 2016 15:58:43 -0400
>>
>> (gdb) up
>> #4 0x00000000006b47e2 in ftfont_shape_by_flt (lgstring=14496901,
>> font=0x17b3660, ft_face=0x1739f10, otf=0x16df8d0, matrix=0x17b3758)
>> at ../../../git/emacs/src/ftfont.c:2655
>> (gdb) pp lgstring
>> [[#<font-object "-unknown-Lohit
>> Gujarati-normal-normal-normal-*-13-*-*-*-*-0-iso10646-1"> 2744 2765
>> 2724 2759] nil [0 0 2744 98 10 0 9 8 0 nil] [1 1 2765 115 0 -4 3 0 4
>> nil] [2 2 2724 81 9 0 8 8 0 nil] [3 3 2759 110 0 -7 -1 12 -7 nil]
>> nil nil nil nil]
>> (gdb)
>
> In the above stack frame, what is the value of g->g (it's a
> structure)?
(gdb) p g->g
$3 = {
c = 0,
code = 175,
from = 0,
to = 115,
xadv = 448,
yadv = 0,
ascent = 512,
descent = 0,
lbearing = 0,
rbearing = 448,
xoff = 0,
yoff = 0,
encoded = 1,
measured = 1,
adjusted = 0,
internal = 0
}
> The crash seems to happen when Emacs tries to display line #10 of
> HELLO, which begins with " South Asia:". The first word after that is
> the one that causes the crash. Can you look at another system, where
> there's no crash, and tell which font is used for that word?
Looking at previous frames, it looks like the character is char 383:
position: 383 of 3322 (11%), column: 16
character: સ (displayed as સ) (codepoint 2744, #o5270, #xab8)
preferred charset: mule-unicode-0100-24ff (Unicode characters of the range
U+0100..U+24FF.)
code point in charset: 0x3978
script: gujarati
syntax: w which means: word
category: .:Base, L:Left-to-right (strong)
to input: type "C-x 8 RET ab8" or "C-x 8 RET GUJARATI LETTER SA"
buffer code: #xE0 #xAA #xB8
file code: ESC #x24 #x2C #x31 #x39 #x78 (encoded by coding system
iso-2022-7bit-unix)
display: composed to form "સ્તે" (see below)
Composed with the following character(s) "્તે" using this font:
xft:-unknown-FreeSerif-normal-normal-normal-*-15-*-*-*-*-0-iso10646-1
by these glyphs:
[0 3 0 10195 9 0 10 10 0 nil]
[0 3 2724 2103 10 1 10 10 1 nil]
[0 3 2759 2132 0 -8 -2 13 -10 [-1 0 0]]
Character code properties: customize what to show
name: GUJARATI LETTER SA
general-category: Lo (Letter, Other)
decomposition: (2744) ('સ')
There are text properties here:
charset mule-unicode-0100-24ff
--
Michael Welsh Duggan
(md5i@md5i.com)
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Michael Welsh Duggan, 2016/05/12
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Glenn Morris, 2016/05/12
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Michael Welsh Duggan, 2016/05/12
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Eli Zaretskii, 2016/05/12
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Michael Welsh Duggan, 2016/05/12
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Eli Zaretskii, 2016/05/12
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO,
Michael Welsh Duggan <=
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Eli Zaretskii, 2016/05/13
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Michael Welsh Duggan, 2016/05/13
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Eli Zaretskii, 2016/05/13
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Michael Welsh Duggan, 2016/05/13
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Eli Zaretskii, 2016/05/13
- bug#23522: 25.0.93; SEGFAULT when displaying HELLO, Michael Welsh Duggan, 2016/05/13