From: Christopher Monsanto <chris@monsan.to>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 10159@debbugs.gnu.org
Subject: bug#10159: auto-complete causes crash in emacs HEAD
Date: Sat, 22 Sep 2012 08:19:11 -0400 [thread overview]
Message-ID: <CAC5n7TGgAyjxf6y6=kfi0mezr_0P4rrUZP2srAfgNKHDhH8QtA@mail.gmail.com> (raw)
In-Reply-To: <83ipb6l15y.fsf@gnu.org>
Same here.
(gdb) pp string
#(" " 0 36 (face popup-tip-face
keymap nil popup-item ""))
Thanks. Seems to me that this value is coming from xdisp.c,
display_line, var n_glyphs_before, derived from row->used[TEXT_AREA]
(line 19425). (I wish I knew what a "struct it" is, not the most
descriptive name! :-))
Christopher Monsanto
chris@monsan.to -- http://monsan.to/
On Sat, Sep 22, 2012 at 7:58 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Christopher Monsanto <chris@monsan.to>
>> Date: Sat, 22 Sep 2012 07:12:45 -0400
>>
>> Sorry, there should not be a space in "def ". "def" is what will do it.
>
> Neither "def " nor "def" reproduce the crash for me. But I succeeded
> in reproducing a very similar crash anyway. The problem seems to be
> that the display code runs off the end of an overlay string. To
> verify that this is what happens to you as well, please do
>
> (gdb) frame 1
> (gdb) pp string
>
> (If 'pp' doesn't work, you will need to type
>
> (gdb) source /path/to/emacs/src/.gdbinit
>
> to make that command available to GDB.)
>
> You should see that 'string' is shorter than 43 characters, whereas
> this part of your backtrace:
>
> #1 0x0000000000663076 in composition_compute_stop_pos (cmp_it=0x7fffffff9148, charpos=43, bytepos=44, endpos=43, string=25414881)
> at composite.c:1053
>
> indicates that the code attempted to access character number 43.
>
> In my case, 'charpos' is 41, 'bytepos' is 42, and 'string' is 36
> characters long.
>
> I'm looking into the cause of this bug.
next prev parent reply other threads:[~2012-09-22 12:19 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-29 2:02 bug#10159: 24.0.91; Segfault with auto-complete package [SEC=UNCLASSIFIED] Alex Murray
2011-11-30 1:54 ` Alex Murray
2011-12-01 16:09 ` Paul Eggert
2011-12-02 5:40 ` Alex Murray
2011-12-06 5:47 ` Alex Murray
2011-12-06 6:31 ` Eli Zaretskii
2012-01-20 4:42 ` Alex Murray
2012-01-20 5:39 ` Alex Murray
2012-01-20 10:01 ` Eli Zaretskii
2012-01-22 22:48 ` Alex Murray
2012-01-23 0:04 ` Paul Eggert
2012-07-26 12:58 ` bug#10159: Segfault with auto-complete package Toon Claes
2012-07-26 15:58 ` Eli Zaretskii
[not found] ` <064f9be784bab3c1101f946e81dd5f90@tonotdo.com>
2012-07-27 6:57 ` Eli Zaretskii
2012-09-22 11:11 ` bug#10159: auto-complete causes crash in emacs HEAD Christopher Monsanto
2012-09-22 11:12 ` Christopher Monsanto
2012-09-22 11:58 ` Eli Zaretskii
2012-09-22 12:19 ` Christopher Monsanto [this message]
2012-09-22 12:40 ` Eli Zaretskii
2012-09-22 13:13 ` Christopher Monsanto
2013-02-14 8:52 ` Glenn Morris
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