From: Juanma Barranquero <lekktu@gmail.com>
To: Stephen Berman <stephen.berman@gmx.net>
Cc: 7044@debbugs.gnu.org
Subject: bug#7044: 24.0.50; Emacs crashes after calling ediff-regions-linewise
Date: Sun, 26 Sep 2010 01:41:39 +0200 [thread overview]
Message-ID: <AANLkTik2JeBp-_-y7tvV8vKJuGqiBUhKWz7ChVOUxrJE@mail.gmail.com> (raw)
In-Reply-To: <87lj71r415.fsf@escher.home>
> 1. emacs -Q
> 2. M-x ediff-regions-linewise, type RET twice to use *scratch* for both
> Ediff buffers (it doesn't matter which buffers are used).
> 3. Any attempt to mark a region, indeed it seems any further input at
> all, makes Emacs abort. This is completely reproducible. Full
> backtrace attached.
On keyboard.c:command_loop, line 1789,
current_buffer->mark_active => t
Vtransient_mark_mode => t
Vdeactivate_mark => nil
Vselect_active_regions => t
When line 1814 is reached, current_buffer->mark contains a marker that
points to no buffer
(gdb) p current_buffer->mark
$8 = 48498715
(gdb) pr
#<marker in no buffer>
so
Fmarker_position (current_buffer->mark)
returns nil, and so beg is assigned XINT (nil), which is a bug.
Now, shouldn't current_buffer->mark_active be nil if the mark points nowhere?
Juanma
next prev parent reply other threads:[~2010-09-25 23:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-16 17:28 bug#7044: 24.0.50; Emacs crashes after calling ediff-regions-linewise Stephen Berman
2010-09-25 23:41 ` Juanma Barranquero [this message]
2010-10-03 1:00 ` Chong Yidong
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