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bug#17771: 24.3.91; SIGSEGV in cleanup_vector
From: |
Stephen Berman |
Subject: |
bug#17771: 24.3.91; SIGSEGV in cleanup_vector |
Date: |
Fri, 13 Jun 2014 14:39:42 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.91 (gnu/linux) |
On Fri, 13 Jun 2014 15:19:50 +0300 Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Stephen Berman <stephen.berman@gmx.net>
>> Cc: 17771@debbugs.gnu.org
>> Date: Fri, 13 Jun 2014 11:50:59 +0200
>>
>> On Fri, 13 Jun 2014 12:41:56 +0300 Eli Zaretskii <eliz@gnu.org> wrote:
>>
>> >> From: Stephen Berman <stephen.berman@gmx.net>
>> >> Date: Fri, 13 Jun 2014 11:12:44 +0200
>> >>
>> >>
>> >> 0. emacs -Q
>> >> 1. C-h h (on my machine, it takes ~30 seconds for the Hello file to
>> >> appear; during that time, do the following:)
>> >> 2. Type C-g repeatedly (I did it rapidly, for ~15 seconds).
>> >> 3. Emacs crashes, full backtrace below. (This is reliably reproducible.)
>> >
>> > Not here, but this is Windows, where input is treated very
>> > differently.
>> >
>> >> Program received signal SIGSEGV, Segmentation fault.
>> >> 0x00000000005aa564 in cleanup_vector (vector=0x43b4ea8)
>> >> at ../../../../bzr/emacs/emacs-24/src/alloc.c:2929
>> >> 2929 ((struct font *) vector)->driver->close ((struct font *)
>> >> vector);
>> >
>> > So which one is the bad pointer, vector, vector->driver, or
>> > vector->driver->close?
>>
>> If you're asking me, can you tell me what to type in gdb to find out?
>
> (gdb) p vector
> (gdb) p vector->driver
> (gdb) p vector->driver->close
>
> Thanks.
Program received signal SIGSEGV, Segmentation fault.
0x00000000005aa564 in cleanup_vector (vector=0x413c318)
at ../../../../bzr/emacs/emacs-24/src/alloc.c:2929
2929 ((struct font *) vector)->driver->close ((struct font *) vector);
(gdb) p vector
$1 = (struct Lisp_Vector *) 0x413c318
(gdb) p vector->driver
There is no member named driver.
(gdb) p vector->driver->close
There is no member named driver.
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Stephen Berman, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Eli Zaretskii, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Stephen Berman, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Eli Zaretskii, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector,
Stephen Berman <=
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Eli Zaretskii, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Stephen Berman, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Eli Zaretskii, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Stephen Berman, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Eli Zaretskii, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Stephen Berman, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Eli Zaretskii, 2014/06/13
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Dmitry Antipov, 2014/06/16
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Stephen Berman, 2014/06/16
- bug#17771: 24.3.91; SIGSEGV in cleanup_vector, Dmitry Antipov, 2014/06/16