GNU bug report logs -
#71929
30.0.60; crash in mark_image_cache
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Reported by: Sean Whitton <spwhitton <at> spwhitton.name>
Date: Thu, 4 Jul 2024 02:34:02 UTC
Severity: normal
Found in version 30.0.60
Done: Po Lu <luangruo <at> yahoo.com>
Bug is archived. No further changes may be made.
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Message #56 received at 71929 <at> debbugs.gnu.org (full text, mbox):
Eli Zaretskii <eliz <at> gnu.org> writes:
> How does this answer my question?
I mentioned free_frame_faces. That's the only function where image
caches are released.
> The use case I was thinking of is that the image cache was shared,
> then the last frame which shared the cache was deleted. How do we
> make sure the cache is freed and set to NULL in this situation?
The cache (whose refcount is 1) is released in free_frame_faces when it
is called with this final frame, through free_image_cache, which also
resets its `FRAME_IMAGE_CACHE' to NULL.
> IOW, we seem to have a cache that is not NULL but is also not a real
> cache, as it cannot be accessed. The question is how did that happen?
I don't know. It can only be the case if its `refcount' was decremented
excessively for a reason not yet understood.
This bug report was last modified 301 days ago.
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