Re: MPS: weak hash tables

[Eli Zaretskii]

> Date: Tue, 02 Jul 2024 15:03:44 +0000
> From: Pip Cet <pipcet@protonmail.com>
> Cc: Gerd Möllmann <gerd.moellmann@gmail.com>, eller.helmut@gmail.com, 
> emacs-devel@gnu.org
> 
> That means we must do one of the following:
> 
> 1. mangle all Lisp_Objects to pointers or fixnums when storing them in a weak 
> hash table, and unmangle them upon retrieval
> 2. not use 32-bit x86 machines
> 3. modify MPS
> 4. throw caution to the wind and just hope it works

I don't understand why (1) is needed.  Lisp objects are already
pointers in disguise, so what exactly is the problem here?

I also don't understand how come an _optimization_ turned out to do us
some harm.