GNU bug report logs - #71929
30.0.60; crash in mark_image_cache

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From: Sean Whitton <spwhitton <at> spwhitton.name>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 71929 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: bug#71929: 30.0.60; crash in mark_image_cache
Date: Wed, 10 Jul 2024 09:12:37 +0800

Hello,

On Tue 09 Jul 2024 at 10:03pm +08, Po Lu wrote:

> OK, I believe I understand the source of these crashes.  A frame whose
> image cache is shared among several frames is destroyed, but its
> `image_cache' field is never cleared after it is destroyed, as its cache
> continues to be referenced, and, if references to the dead frame remain,
> GC attempts to mark the said image cache although its validity is no
> longer guaranteed.  In earlier Emacs versions, this problem would have
> appeared if references to dead frames were preserved beyond the
> destruction of a display structure.  This has been corrected on the
> emacs-30 branch, and therefore if the crashes do not resurface in a few
> days, I will close this ticket.

Thanks for the fix, running it now.

-- 
Sean Whitton

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