bug#12007: 24.1.50; Crash in auto-revert-handler

[Eli Zaretskii]

> Date: Mon, 13 Aug 2012 22:24:08 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: dmantipov@yandex.ru, 12007@debbugs.gnu.org
> 
> Perhaps related, the current trunk (revision 109586) segfaults on
> startup ("emacs -Q") on GNU/Linux, with the following backtrace:
> 
>   #0  0x00007ffff5bc0131 in g_type_check_instance_cast ()
>      from /usr/lib/libgobject-2.0.so.0
>   #1  0x00000000005d6de6 in xg_mark_data () at gtkutil.c:2173
>   #2  0x0000000000692f28 in Fgarbage_collect () at alloc.c:5472
>   #3  0x000000000068bd27 in maybe_gc () at lisp.h:3536
>   #4  0x00000000006bc2ab in eval_sub (form=23619014) at eval.c:2056
>   #5  0x0000000000706a9c in readevalloop (readcharfun=15433282, 
>       stream=0x168a720, sourcename=23641873, printflag=0, unibyte=15317634, 
>       readfun=15317634, start=15317634, end=15317634) at lread.c:1814
>   #6  0x0000000000704998 in Fload (file=23634305, noerror=15317682, 
>       nomessage=15317682, nosuffix=15317634, must_suffix=15317634)
>       at lread.c:1308

Today's trunk still crashes on startup.  Can this be fixed, please?