Re: Merging scratch/no-purespace to remove unexec and purespace

[Gerd Möllmann]

Pip Cet via "Emacs development discussions." <emacs-devel@gnu.org>
writes:

> "Stefan Monnier" <monnier@iro.umontreal.ca> writes:
>
>>>> OTOH and IMHO, it would be preferable if that symbol could not crash
>>>> Emacs.  Can we come up with a good way to fix that, while preserving the
>>>> check that Andrea wants to keep?
>>>
>>> That sounds like a good thing to focus on, yes.  We need to have a value
>>> in a vector that we Fread that is distinguishable from all other values.
>>
>> How 'bout an uninterned symbol `#:foo`?
>
> I think those are legal for native-compiled subrs to use (there's a
> comment about it, at least), so that wouldn't do us any good, would it?
>
> Pip

Uninterned symbols are unique, i.e. (eq '#:a '#:a) => nil.
Wouldn't that help?