Re: A crash in a gnus group with indic script in content and headers

[Manoj Srivastava <srivasta@acm.org>]

Hi,

        Here is the run with all the information. I think this was a
 slightly different trigger, since EDmacs crashed while trying to
 display the *Summary* bugger (previous crashes had been on trying to
 display the *Article* buffers).

        manoj
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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This GDB was configured as "x86_64-linux-gnu"...
SIGINT is used by the debugger.
Are you sure you want to change it? (y or n) [answered Y; input not from terminal]
DISPLAY = :0.0
TERM = xterm
Breakpoint 1 at 0x5c9114: file emacs.c, line 424.
Breakpoint 2 at 0x5eee54: file sysdep.c, line 1133.
(gdb) run
Starting program: /usr/local/git/emacs/src/emacs 
[Thread debugging using libthread_db enabled]
[New Thread 0x7f667d82e770 (LWP 30402)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f667d82e770 (LWP 30402)]
0x00000000006fbf4e in ftfont_otf_features (gsub_gpos=0x8311390) at ftfont.c:1365
1365                  OTF_TAG_SYM (sym, gsub_gpos->FeatureList.Feature[l].FeatureTag);
(gdb) p l
$1 = 0
(gdb) p k
$2 = 21329
(gdb) p gsub_gpos->FeatureList.FeatureCount
$3 = 0
(gdb) p otf_langsys->FeatureCount
$4 = 21330
(gdb) up 2
#2  0x0000000000687aec in font_match_p (spec=24601876, font=26796324) at font.c:2517
2517              val2 = fontp->driver->otf_capability (fontp);
(gdb) p font
$5 = 26796324
(gdb) pr
#<font-object "-unknown-DejaVu Sans Mono-bold-normal-normal-*-14-*-*-*-m-0-iso10646-1">
(gdb) up 2
#4  0x0000000000509cc0 in fontset_find_font (fontset=118617876, c=2350, face=0x68a10f0, id=-1, fallback=0) at fontset.c:535
535             reorder_font_vector (font_group, face->ascii_face->font);
(gdb) p/x c
$6 = 0x92e
(gdb) bt
#0  0x00000000006fbf4e in ftfont_otf_features (gsub_gpos=0x8311390) at ftfont.c:1365
#1  0x00000000006fc211 in ftfont_otf_capability (font=0x198e120) at ftfont.c:1395
#2  0x0000000000687aec in font_match_p (spec=24601876, font=26796324) at font.c:2517
#3  0x0000000000509754 in reorder_font_vector (font_group=89017301, font=0x198e120) at fontset.c:420
#4  0x0000000000509cc0 in fontset_find_font (fontset=118617876, c=2350, face=0x68a10f0, id=-1, fallback=0) at fontset.c:535
#5  0x000000000050a056 in fontset_font (fontset=117736356, c=2350, face=0x68a10f0, id=-1) at fontset.c:678
#6  0x000000000050aa79 in font_for_char (face=0x68a10f0, c=2350, pos=1346, object=12340913) at fontset.c:984
#7  0x000000000068babe in font_range (pos=1347, limit=0x7fff85970fa8, w=0x6869130, face=0x68a10f0, string=12340913) at font.c:3737
#8  0x00000000006f0084 in autocmp_chars (cft_element=31749045, charpos=1346, bytepos=1346, limit=2142, win=0x6869130, face=0x68a10f0, 
    string=12340913) at composite.c:948
#9  0x00000000006f0f0c in composition_reseat_it (cmp_it=0x7fff859720a0, charpos=1346, bytepos=1346, endpos=2142, w=0x6869130, 
    face=0x68a10f0, string=12340913) at composite.c:1112
#10 0x000000000043e499 in next_element_from_buffer (it=0x7fff85971b20) at xdisp.c:6493
#11 0x000000000043bbf0 in get_next_display_element (it=0x7fff85971b20) at xdisp.c:5655
#12 0x0000000000458388 in display_line (it=0x7fff85971b20) at xdisp.c:16575
#13 0x000000000045098a in try_window (window=109482292, pos={charpos = 857, bytepos = 857}, check_margins=1) at xdisp.c:14039
#14 0x000000000044f43f in redisplay_window (window=109482292, just_this_one_p=0) at xdisp.c:13662
#15 0x000000000044ae11 in redisplay_window_0 (window=109482292) at xdisp.c:12252
#16 0x000000000066dfd5 in internal_condition_case_1 (bfun=0x44add5 <redisplay_window_0>, arg=109482292, handlers=12699573, 
    hfun=0x44adaa <redisplay_window_error>) at eval.c:1559
#17 0x000000000044ad8b in redisplay_windows (window=109482292) at xdisp.c:12231
#18 0x000000000044ad5c in redisplay_windows (window=109481684) at xdisp.c:12225
#19 0x0000000000449f3e in redisplay_internal (preserve_echo_area=0) at xdisp.c:11807
#20 0x0000000000447d40 in redisplay () at xdisp.c:11013
#21 0x00000000005d08a4 in read_char (commandflag=1, nmaps=4, maps=0x7fff85973ea0, prev_event=12340913, 
    used_mouse_menu=0x7fff859741d4, end_time=0x0) at keyboard.c:2649
#22 0x00000000005dd72c in read_key_sequence (keybuf=0x7fff85974540, bufsize=30, prompt=12340913, dont_downcase_last=0, 
    can_return_switch_frame=1, fix_current_buffer=1) at keyboard.c:9343
#23 0x00000000005cd6dd in command_loop_1 () at keyboard.c:1621
#24 0x000000000066de39 in internal_condition_case (bfun=0x5cd343 <command_loop_1>, handlers=12428177, hfun=0x5cccab <cmd_error>)
    at eval.c:1511
#25 0x00000000005cd062 in command_loop_2 () at keyboard.c:1338
#26 0x000000000066d7eb in internal_catch (tag=12409473, func=0x5cd048 <command_loop_2>, arg=12340913) at eval.c:1247
#27 0x00000000005cd022 in command_loop () at keyboard.c:1317
#28 0x00000000005cc7f1 in recursive_edit_1 () at keyboard.c:942
#29 0x00000000005cc994 in Frecursive_edit () at keyboard.c:1004
#30 0x00000000005caf1c in main (argc=1, argv=0x7fff85974e68) at emacs.c:1723

        Character 0x92e is: म, and I do not think DejaVu should be used
 to render it.

        character: म (2350, #o4456, #x92e)
preferred charset: unicode (Unicode (ISO10646))
       code point: 0x092E
           syntax: w 	which means: word
         category: i:Indian
      buffer code: #xE0 #xA4 #xAE
        file code: #xE0 #xA4 #xAE (encoded by coding system utf-8-emacs)
          display: composed to form "म" (see below)

Composed using this font:
  xft:-unknown-gargi-normal-normal-normal-*-14-*-*-*-*-0-iso10646-1
by these glyphs:
  [0 0 2350 145 7 0 8 9 1 nil]

Character code properties: customize what to show
  name: DEVANAGARI LETTER MA
  general-category: Lo (Letter, Other)

There are text properties here:
  fontified            t

-- 
"I am, therefore I am." Akira
Manoj Srivastava <srivasta@acm.org> <http://www.golden-gryphon.com/>  
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