GNU bug report logs - #50571
28.0.50; Redisplay segfaults with empty face cache

Previous Next

Full log

Message #25 received at 50571-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: "Basil L. Contovounesios" <contovob <at> tcd.ie>
Cc: 50571-done <at> debbugs.gnu.org
Subject: Re: bug#50571: 28.0.50; Redisplay segfaults with empty face cache
Date: Wed, 15 Sep 2021 16:16:41 +0300

> From: "Basil L. Contovounesios" <contovob <at> tcd.ie>
> Cc: 50571 <at> debbugs.gnu.org
> Date: Tue, 14 Sep 2021 20:45:18 +0100
> 
> >> Thanks, I see the reason now.  It's because we allow to have arbitrary
> >> Lisp to be registered in jit-lock-functions, and then that arbitrary
> >> Lisp is called in the middle of redisplay, and in this case creates a
> >> whole new frame with faces.  As luck would have it, we decide right
> >> there and then perform routine maintenance and release all the faces
> >> on all the frames...
> >> 
> >> I'm thinking about the best solution for this.
> >
> > Does the patch below give good results?
> 
> Yes, applying it makes the issue go away, and reverting it reintroduces
> the segfault.  I didn't notice any other issues.  Thanks!

Thanks, I've now installed these changes, and I'm therefore closing
the bug.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.