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From: "Basil L. Contovounesios" via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 50571@debbugs.gnu.org
Subject: bug#50571: 28.0.50; Redisplay segfaults with empty face cache
Date: Tue, 14 Sep 2021 20:45:18 +0100	[thread overview]
Message-ID: <87y27zuek1.fsf@tcd.ie> (raw)
In-Reply-To: <83a6kfcmdk.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 14 Sep 2021 16:33:43 +0300")

Eli Zaretskii [2021-09-14 16:33 +0300] wrote:

>> Date: Tue, 14 Sep 2021 16:03:02 +0300
>> From: Eli Zaretskii <eliz@gnu.org>
>> Cc: 50571@debbugs.gnu.org
>> 
>> 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!

-- 
Basil





  reply	other threads:[~2021-09-14 19:45 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-13 14:59 bug#50571: 28.0.50; Redisplay segfaults with empty face cache Basil L. Contovounesios via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-09-13 16:03 ` Eli Zaretskii
2021-09-13 23:21   ` Basil L. Contovounesios via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-09-14 13:03     ` Eli Zaretskii
2021-09-14 13:33       ` Eli Zaretskii
2021-09-14 19:45         ` Basil L. Contovounesios via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2021-09-15 13:16           ` Eli Zaretskii
2021-09-19 13:57           ` Basil L. Contovounesios via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-09-19 15:47             ` Eli Zaretskii
2021-09-19 18:21               ` Basil L. Contovounesios via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-09-19 18:41                 ` Eli Zaretskii

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