--- Begin Message ---
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Subject: |
23.1.50; crash in abbrev mode |
|
Date: |
Fri, 10 Jul 2009 21:22:20 +0900 |
My Emacs (compiled with CFLAGS='-g -DENABLE_CHECKING') has
just crashed as this:
cmds.c:495: Emacs fatal error: assertion failed: SYMBOLP(sym)
[Switching to Thread 0xb70e0700 (LWP 6775)]
Breakpoint 1, abort () at emacs.c:433
(gdb) bt full
#0 abort () at emacs.c:433
No locals.
#1 0x083202c2 in die (msg=0x85ae1ec "assertion failed: SYMBOLP(sym)",
file=0x85acc8e "cmds.c", line=495) at alloc.c:6221
No locals.
#2 0x082ce57b in internal_self_insert (c=64, noautofill=0) at cmds.c:495
modiff = 135
sym = 164732765
hairy = 1
tem = -1080958120
synt = Spunct
overwrite = 142900505
string = 0
len = 1
str = "@\000\000\000"
chars_to_delete = 0
spaces_to_insert = 0
[...]
(gdb) up 2
(gdb) list
490 sym = call0 (Qexpand_abbrev);
491
492 /* If we expanded an abbrev which has a hook,
493 and the hook has a non-nil `no-self-insert' property,
494 return right away--don't really self-insert. */
495 if (! NILP (sym) && ! NILP (XSYMBOL (sym)->function)
496 && SYMBOLP (XSYMBOL (sym)->function))
497 {
498 Lisp_Object prop;
499 prop = Fget (XSYMBOL (sym)->function, intern
("no-self-insert"));
(gdb) pp sym
(64 46 37 33 95 45)
(gdb)
FYI, (string 64 46 37 33 95 45) => "@.%!_-".
This is reproducible by this scenario:
% emacs -Q
C-x m
M-x message-mode
handa@
Emacs crashes when I type the last "@" (in To: subject
line). It seems that "handa" can be any other string. It
is reproducible with EMACS_23_1_RC branch too.
In the above code, at least we should have a ckeck of
SYMBOLP (sym).
---
Kenichi Handa
handa@m17n.org
In GNU Emacs 23.1.50.2 (i686-pc-linux-gnu, GTK+ Version 2.14.4)
of 2009-07-08 on etlken
Windowing system distributor `The X.Org Foundation', version 11.0.10502000
configured using `configure 'CFLAGS=-g''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: ja_JP.UTF-8
value of $XMODIFIERS: @im=SCIM
locale-coding-system: utf-8-unix
default-enable-multibyte-characters: t
Major mode: Lisp Interaction
Minor modes in effect:
display-time-mode: t
tooltip-mode: t
tool-bar-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
global-auto-composition-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
Recent input:
<escape> x r e p o e r t <backspace> <backspace> <backspace>
r t <tab> <return>
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
--- End Message ---
--- Begin Message ---
|
Subject: |
Re: bug#3809: 23.1.50; crash in abbrev mode |
|
Date: |
Mon, 13 Jul 2009 10:28:56 +0900 |
In article <87zlbbz44c.fsf@stupidchicken.com>, Chong Yidong
<cyd@stupidchicken.com> writes:
> > My Emacs (compiled with CFLAGS='-g -DENABLE_CHECKING') has
> > just crashed as this:
> >
> > % emacs -Q
> > C-x m
> > M-x message-mode
> > handa@
> >
> > Emacs crashes when I type the last "@" (in To: subject
> > line). It seems that "handa" can be any other string. It
> > is reproducible with EMACS_23_1_RC branch too.
> I can't reproduce this, even with CFLAGS='-g
> -DENABLE_CHECKING'.
Perhaps, that's because you don't have any alias settings in
~/.mailrc.
> But, you're right about this:
> > In the above code, at least we should have a ckeck of
> > SYMBOLP (sym).
> Could you go ahead and add this check, and if this fixes the crash for
> you, please close the bug. Thanks.
Ok. Just done.
---
Kenichi Handa
handa@m17n.org
--- End Message ---