Re: master 45a1653: ; Fix last change to bibtex.el

[Eli Zaretskii]

> Date: Tue, 24 Nov 2020 21:58:38 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: rgm@gnu.org, larsi@gnus.org, emacs-devel@gnu.org
> 
>   Thread 1 received signal SIGSEGV, Segmentation fault.
>   [Switching to Thread 7556.0x26d4]
>   0x0130555f in symbol_marked_p (s=0x81ba9ec2) at alloc.c:3792
>   3792        : s->u.s.gcmarkbit;
>   (gdb) p s
>   $1 = (const struct Lisp_Symbol *) 0x81ba9ec2
>   (gdb) p *s
>   Cannot access memory at address 0x81ba9ec2
>   (gdb) bt
>   #0  0x0130555f in symbol_marked_p (s=0x81ba9ec2) at alloc.c:3792
>   #1  0x0130ac7f in mark_object (arg=XIL(0x80000002)) at alloc.c:6570
>   #2  0x01309f92 in mark_vectorlike (header=0x6975158) at alloc.c:6152

Looks like some snafu with stack marking, perhaps specific to 32-bit
builds --with-wide-int.  It could be unrelated to the change which
triggers this, but the net result is that I cannot build the branch,
which is ... bad.