Re: shr using `make-xwidget' incorrectly

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: larsi@gnus.org
> Date: Thu, 11 Nov 2021 09:54:51 +0800
> 
> Which reminds me of another problem (in the Emacs 28 xwidget code as
> well): If an xwidget's buffer is killed, but references to it still
> exist somewhere, crashes can happen, because the GTK resources allocated
> to the xwidget are killed in `kill_buffer_xwidgets' and not during
> garbage collection.
> 
> I think the best thing to do in this case would be to introduce a
> `dead' state for xwidgets, not unlike killed buffers and dead frames,
> which an xwidget is set to after being killed.
> 
> Then, performing any sort of operation on a killed xwidget can either
> throw an error, or do nothing.

Why can't we release the GTK resources when such a buffer is killed?