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Re: scratch/comp-static-data 5aa3db2f11: comp: Add support for compiling


From: Eli Zaretskii
Subject: Re: scratch/comp-static-data 5aa3db2f11: comp: Add support for compiling elisp constants into static data.
Date: Sun, 20 Nov 2022 09:37:27 +0200

> From: Richard Stallman <rms@gnu.org>
> Cc: vibhavp@gmail.com, akrl@sdf.org, luangruo@yahoo.com,
>       emacs-devel@gnu.org
> Date: Sat, 19 Nov 2022 20:15:33 -0500
> 
>   > I'm not aware of any aspect of the change which would cause crashes in
>   > these cases.
> 
> It is possible I misunderstood what the change was for.  The message
> seemed to say that it would put the values of variables defined with
> `defconst' into read-only memory.  If there are cases in which that
> affects the program's execution, I expect it will cause a failure of
> some sort in those same cases.

I'd need to understand what does "read-only memory" mean in this context.
Does the code use some memory-protection capabilities to enforce that?  Or
does it do something else?

Vibhav, please chime in and help us understand what the code does.



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