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

[Eli Zaretskii]

> Cc: 23704-done@debbugs.gnu.org, vincent.belaiche@gmail.com, schwab@suse.de
> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Tue, 7 Jun 2016 09:36:56 -0700
> 
> On 06/07/2016 08:52 AM, Eli Zaretskii wrote:
> > Thanks, this looks good to me.
> 
> OK, thanks, I installed it into emacs-25 and merged it into master and 
> am boldly marking the bug as done.
> 
> > The only issue left is with a similar
> > code in the non-forwardp branch -- don't we want to fix that as well?
> 
> I left the non-forwardp branch alone because it calls 
> UPDATE_SYNTAX_TABLE_BACKWARD, which in turn can call 
> update_syntax_table, which (unlike update_syntax_table_forward) does not 
> call parse_sexp_propertize and so I don't see how the garbage collector 
> can trigger.

Ah, okay.  Then I guess we are good to go.