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Display bug [Re: My Emacs unicode 2 crash again ...]
From: |
Kenichi Handa |
Subject: |
Display bug [Re: My Emacs unicode 2 crash again ...] |
Date: |
Wed, 07 Mar 2007 14:37:39 +0900 |
User-agent: |
SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.2 Emacs/22.0.95 (i686-pc-linux-gnu) MULE/5.0 (SAKAKI) |
In article <address@hidden>, Kenichi Handa <address@hidden> writes:
> It now shows the correct place of calling abort() as below,
> and I can reproduce the bug by compiling Emacs with
> --enable-asserts.
> Breakpoint 1, abort () at emacs.c:431
> (gdb) bt full
> #0 abort () at emacs.c:431
> No locals.
> #1 0x0808a8ec in try_window_id (w=0x8867cc8) at xdisp.c:15132
[...]
> xassert (w->window_end_bytepos >= 0); <-- line 15132
> IF_DEBUG (debug_method_add (w, "A"));
> }
> I'm now trying to find what is wrong.
I found that the same bug can be reproduced even with Emacs
22 (latest CVS HEAD) when it is configured with
--enable-asserts. Please try to build Emacs that way, and
run this code:
(defun temp ()
(with-temp-buffer
(switch-to-buffer (current-buffer))
(insert "a-\n-\nd\n")
(let ((nbsp (string (decode-char 'ucs #xa0))))
(while t
(goto-char 1)
(replace-string "-" nbsp)
(sit-for 0.1)
(goto-char 1)
(replace-string nbsp "-")
(sit-for 0.1)))))
It just swaps "-" and NBSP repeatedly. As the logic of the
function try_window_id is quite complicated, I still don't
understand what is wrong. Could someone help? FYI,
(gdb) run
[...]
Breakpoint 1, abort () at emacs.c:431
(gdb) up
#1 0x08086b40 in try_window_id (w=0x85df240) at xdisp.c:14983
(gdb) pp w->buffer
#<buffer *temp*>
(gdb) pp current_buffer->name
" *temp*"
(gdb) p *current_buffer->text
$7 = {
beg = 0x85bf3e0 "a-\n-",
gpt = 5,
z = 8,
gpt_byte = 5,
z_byte = 8,
gap_size = 13,
modiff = 6,
chars_modiff = 6,
save_modiff = 1,
overlay_modiff = 1,
beg_unchanged = 1,
end_unchanged = 3,
unchanged_modified = 4,
overlay_unchanged_modified = 1,
intervals = 0x0,
markers = 0x854d948
}
(gdb) p row->end.pos
$8 = {
charpos = 8,
bytepos = 10
}
(gdb) p w->window_end_bytepos
$9 = -2
(gdb)
It seems that the buffer now contains only ASCII
(i.e. "a-\n-\nd\n"), but row points to a data containing
multibyte characters (NBSP in this case).
---
Kenichi Handa
address@hidden
- Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., (continued)
Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., David Kastrup, 2007/03/06
- Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Kenichi Handa, 2007/03/06
- Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Nick Roberts, 2007/03/06
- Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Hongyi Zhao, 2007/03/06
- Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Nick Roberts, 2007/03/06
- Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Hongyi Zhao, 2007/03/06
- Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Nick Roberts, 2007/03/07
Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Kenichi Handa, 2007/03/06
Display bug [Re: My Emacs unicode 2 crash again ...],
Kenichi Handa <=
Re: Display bug [Re: My Emacs unicode 2 crash again ...], Hongyi Zhao, 2007/03/07
Re: Display bug [Re: My Emacs unicode 2 crash again ...], Kenichi Handa, 2007/03/07
Re: Display bug [Re: My Emacs unicode 2 crash again ...], Hongyi Zhao, 2007/03/07
Re: Display bug [Re: My Emacs unicode 2 crash again ...], Richard Stallman, 2007/03/07
Re: Display bug [Re: My Emacs unicode 2 crash again ...], Hongyi Zhao, 2007/03/07
Re: Display bug [Re: My Emacs unicode 2 crash again ...], Richard Stallman, 2007/03/08
Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Richard Stallman, 2007/03/07
Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Eli Zaretskii, 2007/03/07
Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Miles Bader, 2007/03/07
Re: My Emacs unicode 2 crash again when I do some *Replace String (M-%)*, I give the debug informations under gdb in the attachments., Eli Zaretskii, 2007/03/09