bug#34404: 26.1; Finalizer in hash table run early?

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: rudalics@gmx.at,  34404@debbugs.gnu.org,  braungb88@gmail.com
> Date: Fri, 27 Nov 2020 09:33:15 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > The question is how do you define "100%"?  The Emacs GC is
> > conservative in the sense that when there's a doubt whether an object
> > _could_ be still referenced, we mark it so it doesn't get swept.
> 
> When is Emacs in doubt?  :-)

Mainly when we find what looks like Lisp objects on the C stack.

> If we could say something about this in the manual (or the
> `garbage-collect' doc string), I think that'd be helpful -- people
> do seem to think that calling `garbage-collect' is guaranteed to
> collect all the garbage.

Fine by me, please feel free to suggest such wording.