--- Begin Message ---
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Subject: |
SIGSEGV in PSEUDOVECTOR_TYPEP when using find-file on a RTL filename |
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Date: |
Wed, 24 Dec 2014 07:25:04 +0000 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Package: emacs
As of 36c43e95de5e (2014-12-18 16:44:11 +0000), Emacs segfaults
when trying to use find-file on "\u062f\u0646\u06cc" (encoded as
a ASCII-safe Emacs string literal here.)
Strangely enough, $ emacs -Q handles that filename just fine.
The backtrace is MIMEd.
--
FSF associate member #7257 http://boycottsystemd.org/ … 3013 B6A0 230E 334A
Program received signal SIGSEGV, Segmentation fault.
0x0000000000477d60 in PSEUDOVECTOR_TYPEP (code=14, a=0x400000000d000040)
at lisp.h:2400
2400 return ((a->size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK))
(gdb) bt
#0 0x0000000000477d60 in PSEUDOVECTOR_TYPEP (code=14, a=0x400000000d000040)
at lisp.h:2400
#1 PSEUDOVECTORP (code=14, a=4611686018645491781) at lisp.h:2414
#2 SUB_CHAR_TABLE_P (a=4611686018645491781) at lisp.h:2472
#3 char_table_ref (table=<optimized out>, address@hidden) at chartab.c:245
#4 0x000000000055ab5f in CHAR_TABLE_REF (idx=4195206, ct=<optimized out>)
at lisp.h:1480
#5 composition_compute_stop_pos (address@hidden,
charpos=6, bytepos=<optimized out>, endpos=12, string=13239761)
at composite.c:1016
#6 0x000000000042543c in set_iterator_to_next (it=0x7fffffff76f0,
reseat_p=<optimized out>) at xdisp.c:7620
#7 0x0000000000428793 in display_string (string=0xb58af5 "",
lisp_string=4195206, face_string=4611686019484352512,
face_string_pos=11897584, start=15, it=0x7fffffff76f0, field_width=12,
precision=-13, max_x=0, multibyte=1) at xdisp.c:23793
#8 0x000000000042945a in display_mode_element (it=0xb58af5, depth=4195206,
field_width=1056964608, precision=11897584, elt=4611686018645491781,
props=5, risky=0) at xdisp.c:22432
#9 0x000000000042a806 in display_mode_element (it=0xb58af5, depth=4195206,
field_width=1056964608, precision=11897584, elt=4611686018645491781,
props=5, risky=0) at xdisp.c:22604
#10 0x000000000042a806 in display_mode_element (it=0xb58af5,
address@hidden, depth=4195206, address@hidden,
field_width=1056964608, address@hidden, precision=11897584,
address@hidden, elt=4611686018645491781, props=5, risky=0)
at xdisp.c:22604
#11 0x000000000042b1ab in display_mode_line (address@hidden,
face_id=MODE_LINE_FACE_ID, format=15192342) at xdisp.c:22121
#12 0x000000000042b488 in display_mode_lines (w=0xb4c630) at xdisp.c:22064
#13 0x00000000004398e6 in redisplay_window (window=11847221,
just_this_one_p=114) at xdisp.c:16853
#14 0x000000000043c6c3 in redisplay_window_0 (address@hidden)
at xdisp.c:14325
#15 0x000000000050374b in internal_condition_case_1 (
address@hidden <redisplay_window_0>, arg=11847221,
handlers=<optimized out>,
address@hidden <redisplay_window_error>) at eval.c:1369
#16 0x000000000041c51e in redisplay_windows (window=11847221) at xdisp.c:14305
#17 0x0000000000435851 in redisplay_internal () at xdisp.c:13901
#18 0x000000000049af1b in read_char (commandflag=11897589, map=4195206,
address@hidden, prev_event=4611686019484352512,
used_mouse_menu=0xb58af0, address@hidden,
end_time=0x2, address@hidden) at keyboard.c:2643
#19 0x000000000049d36e in read_key_sequence (
address@hidden, prompt=11765618,
address@hidden,
address@hidden,
address@hidden,
address@hidden, bufsize=30)
at keyboard.c:9257
#20 0x000000000049f060 in command_loop_1 () at keyboard.c:1510
#21 0x0000000000503627 in internal_condition_case (
address@hidden <command_loop_1>, handlers=<optimized out>,
address@hidden <cmd_error>) at eval.c:1345
#22 0x000000000049201e in command_loop_2 (address@hidden)
at keyboard.c:1245
#23 0x000000000050350b in internal_catch (tag=11813186,
address@hidden <command_loop_2>, arg=11765618) at eval.c:1106
#24 0x0000000000491fdb in command_loop () at keyboard.c:1224
#25 0x000000000049622a in recursive_edit_1 () at keyboard.c:834
#26 0x0000000000496560 in Frecursive_edit () at keyboard.c:905
#27 0x00000000004084fb in main (argc=1, argv=0x7fffffffe198) at emacs.c:1619
(gdb)
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--- Begin Message ---
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Subject: |
Re: bug#19435: SIGSEGV in PSEUDOVECTOR_TYPEP when using find-file on a RTL filename |
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Date: |
Thu, 25 Dec 2014 17:41:53 +0200 |
> Date: Wed, 24 Dec 2014 11:36:42 +0300
> From: Dmitry Antipov <address@hidden>
> CC: Ivan Shmakov <address@hidden>, Eli Zaretskii <address@hidden>
>
> On 12/24/2014 10:25 AM, Ivan Shmakov wrote:
>
> > As of 36c43e95de5e (2014-12-18 16:44:11 +0000), Emacs segfaults
> > when trying to use find-file on "\u062f\u0646\u06cc" (encoded as
> > a ASCII-safe Emacs string literal here.)
> >
> > Strangely enough, $ emacs -Q handles that filename just fine.
> >
> > The backtrace is MIMEd.
>
> Reproduced. This seems to be a redisplay glitch since
> composition_compute_stop_pos
> makes an attempt to move CMP_IT beyond STRING's boundaries, as handled by the
> following extra eassert:
Thanks.
This was a very old bug, it was introduced more than 4 years ago (as
part of solution of another bug).
Now fixed by a41d07b on the emacs-24 branch.
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