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bug#6621: Emacs crash when trying to report emacs crash


From: Yair F
Subject: bug#6621: Emacs crash when trying to report emacs crash
Date: Wed, 14 Jul 2010 20:54:33 +0300

On Wed, Jul 14, 2010 at 11:32 AM, Eli Zaretskii <address@hidden> wrote:

> My Emacs is not compiled with -DENABLE_CHECKING, so the assert
> triggered here is a no-op for me, and Emacs works for me just fine
> with this recipe.
I have a slight suspicion that this relates to OTF/XFT font handling.
You build on Windows right?

>
> I will build with -DENABLE_CHECKING and try again, but until I
> do, could you please show the output of the`pit' command in frame #1?
>
> Also, in the same frame #1, what do these commands show:
>
>  (gdb) pgrowx it->glyph_row
>  (gdb) prowlims it->glyph_row
>  (gdb) pmtxrows it->w->desired_matrix
>
> Finally, does the problem persist if you turn off
> auto-composition-mode before pasting the text?
As expected, turning off auto-composition-mode prevents the crash.
See my lisp/language/hebrew.el attached.

>
(gdb) up
#1  0x0809cd6b in set_iterator_to_next (it=0xbfffdee4, reseat_p=1) at
xdisp.c:6254
6254              xassert (IT_BYTEPOS (*it) == CHAR_TO_BYTE (IT_CHARPOS (*it)));
(gdb) pit
cur=151[277] pos=150[276] start=128[235] end=151 stop=151 face=16 MB ch='@'
vpos=6 hpos=17 y=102 lvy=510 x=114 vx=0-640 w=8 a+d=13+4=17 max=13+4=17
(gdb) pgrowx it->glyph_row
TEXT: 17 glyphs
  0    0: COMP[47 (0..1)] pos=128 w=9 a+d=13+4 face=16 MB
  1    9: CHAR[0x5e7] pos=130 blev=0,btyp=UNDEF w=9 a+d=13+4 face=16 MB
  2   18: CHAR[ ] pos=131 blev=0,btyp=UNDEF w=8 a+d=13+4 MB
  3   26: COMP[49 (0..1)] pos=132 w=9 a+d=13+4 face=16 MB
  4   35: CHAR[0x5e5] pos=134 blev=0,btyp=UNDEF w=7 a+d=13+4 face=16 MB
  5   42: CHAR[ ] pos=135 blev=0,btyp=UNDEF w=8 a+d=13+4 MB
  6   50: COMP[51 (0..1)] pos=136 w=3 a+d=13+4 face=16 MB
  7   53: COMP[53 (0..1)] pos=138 w=8 a+d=13+4 face=16 MB
  8   61: CHAR[0x5d9] pos=140 blev=0,btyp=UNDEF w=3 a+d=13+4 face=16 MB
  9   64: CHAR[ ] pos=141 blev=0,btyp=UNDEF w=8 a+d=13+4 MB
 10   72: COMP[55 (0..1)] pos=142 w=6 a+d=13+4 face=16 MB
 11   78: COMP[57 (0..1)] pos=144 w=9 a+d=13+4 face=16 MB
 12   87: CHAR[0x5e2] pos=146 blev=0,btyp=UNDEF w=8 a+d=13+4 face=16 MB
 13   95: COMP[35 (0..0)] pos=147 w=3 a+d=13+4 face=16 MB
 14   98: COMP[35 (1..1)] pos=149 w=0 a+d=13+4 face=16 MB
 15   98: CHAR[^] pos=150 blev=0,btyp=UNDEF w=8 a+d=13+4 face=17 MB
 16  106: address@hidden pos=150 blev=0,btyp=UNDEF w=8 a+d=13+4 face=17 MB
(gdb) prowlims it->glyph_row
edges=(0,0),r2l=0,cont=0,trunc=(0,0),at_zv=0
(gdb) pmtxrows it->w->desired_matrix
0: edges=(1,9),r2l=0,cont=0,trunc=(0,0),at_zv=0
1: edges=(9,31),r2l=0,cont=0,trunc=(0,0),at_zv=0
2: edges=(31,59),r2l=0,cont=0,trunc=(0,0),at_zv=0
3: edges=(59,85),r2l=0,cont=0,trunc=(0,0),at_zv=0
4: edges=(85,108),r2l=0,cont=0,trunc=(0,0),at_zv=0
5: edges=(108,128),r2l=0,cont=0,trunc=(0,0),at_zv=0
6: edges=(0,0),r2l=0,cont=0,trunc=(0,0),at_zv=0
7: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
8: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
9: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
10: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
11: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
12: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
13: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
14: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
15: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
16: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
17: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
18: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
19: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
20: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
21: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
22: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
23: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
24: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
25: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
26: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
27: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
28: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
29: edges=(149,149),r2l=0,cont=0,trunc=(0,0),at_zv=1
30: edges=(192,192),r2l=0,cont=0,trunc=(0,0),at_zv=1
31: edges=(192,192),r2l=0,cont=0,trunc=(0,0),at_zv=1
32: edges=(192,192),r2l=0,cont=0,trunc=(0,0),at_zv=1

Attachment: hebrew.el
Description: Text Data


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