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bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer
From: |
Eli Zaretskii |
Subject: |
bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer |
Date: |
Sat, 09 Jul 2011 20:31:42 +0300 |
> Date: Sat, 09 Jul 2011 10:44:39 +0200
> From: martin rudalics <rudalics@gmx.at>
> Cc: 9006@debbugs.gnu.org
>
> I think there are three problems with this.
>
> > #1 0x080a71a7 in unshow_buffer (w=0x9a8e828)
> > at /data/steve/bzr/emacs/quickfixes/src/window.c:1801
> > buf = 218835381
> > b = 0xd0b29b0
>
> This problem is certainly due to the fact that vertical_motion blindly
> does
>
> if (XBUFFER (w->buffer) != current_buffer)
> {
> /* Set the window's buffer temporarily to the current buffer. */
> old_buffer = w->buffer;
> XSETBUFFER (w->buffer, current_buffer);
> }
>
> and probably should do at least something like
>
> if (XBUFFER (w->buffer) != current_buffer)
> {
> /* Set the window's buffer temporarily to the current buffer. */
> old_buffer = w->buffer;
> XSETBUFFER (w->buffer, current_buffer);
> set_marker_both (w->pointm, buffer, BEG, BEG_BYTE);
> }
>
> instead.
How is vertical-motion relevant to the user typing C-g?
And why does this code normally works, if it is wrong? What am I
missing?
> Allowing to kill a temporary buffer while it's shown in a window just to
> calculate how far `vertical-motion' would go if the buffer were shown in
> a window is asking for trouble.
I don't understand how come vertical-motion ended up calling Lisp, as
this Lisp backtrace shows:
> Lisp Backtrace:
> "set-window-buffer" (0xbfff66d4)
> "set-window-buffer-start-and-point" (0xbfff6854)
> "byte-code" (0xbfff6964)
> "switch-to-prev-buffer" (0xbfff6c54)
> "replace-buffer-in-windows" (0xbfff6dec)
> "kill-buffer" (0xbfff6eb4)
> "and" (0xbfff6fa8)
> "vertical-motion" (0xbfff7d24)
And why does that Lisp code call kill-buffer?
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, (continued)
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, Stephen Berman, 2011/07/13
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, martin rudalics, 2011/07/14
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, Stephen Berman, 2011/07/15
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, martin rudalics, 2011/07/10
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, Stephen Berman, 2011/07/09
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, martin rudalics, 2011/07/09
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer,
Eli Zaretskii <=
- bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer, martin rudalics, 2011/07/10