bug#71774: 31.0.50; Hash table weakness broken?

[martin rudalics via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

 >> Which "values" would you set to nil?
 >
 > The global variable "values", which the REPL uses to store evaluated values.
 >
 >> What precisely did you do?
 >
 > Here's my *scratch* buffer in emacs -Q:
 >
 >
 > (defvar table (make-hash-table :weakness t))
 >
 > (puthash t (split-window) table)
 >
 > (delete-other-windows)
 >
 > (garbage-collect)
 >
 > (gethash t table)
 >
 > (setq values nil)
 >
 > (garbage-collect)
 >
 > (gethash t table)
 >
 >
 > What I did is go through this buffer line by line, using C-x C-e after each line. The first gethash produces the window, the second returns nil.

You're right.  So here the scenario

(defvar table (make-hash-table :weakness t))

(progn
   (puthash t (split-window) table)
   (delete-other-windows))

(garbage-collect)

(gethash t table)

gets me nil too.  So to make such tests work one has to tinker with
that obsolete variable 'values'.  Worrisome.

Closing this bug and many thanks, martin