bug#23704: 25.1.50; Emacs crash in syntax.c

[Eli Zaretskii]

> Cc: Vincent Belaïche <vincent.belaiche@gmail.com>,
>  Andreas Schwab <schwab@suse.de>, Eli Zaretskii <eliz@gnu.org>
> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Mon, 6 Jun 2016 10:17:56 -0700
> 
> Thanks to all for the bug report and followup investigation. There is a 
> clear bug in skip_syntaxes in Emacs 25, which the attached patch should fix.
> 
> Eli, OK to install this into emacs-25? If not, I can install it into master.

It should go to the release branch.

However, isn't this just part of the problem?  What about the call to
UPDATE_SYNTAX_TABLE_FORWARD?  It can also call Lisp.  Or are you
saying that the bug is unrelated to GC while the loop in skip_syntaxes
is running?

Thanks.