GNU bug report logs - #62009
29.0.60; Emacs crashes on setf symbol-name

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Message #11 received at 62009 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Daniel Mendler <mail <at> daniel-mendler.de>
Cc: 62009 <at> debbugs.gnu.org
Subject: Re: bug#62009: 29.0.60; Emacs crashes on setf symbol-name
Date: Tue, 07 Mar 2023 16:45:20 +0100

Daniel Mendler <mail <at> daniel-mendler.de> writes:

> Execute the following in the scratch buffer:
>
> (setf (aref (symbol-name 'car) 1) ?o)
>
> Emacs crashes with a segmentation fault. Is this a well-known issue? I
> could reproduce the problem on Emacs 27 and 29. Should there be some
> mechanism to protect the strings of symbols?

I vaguely remember this has been discussed some time ago, but I don't
find a bug report about it.  Maybe it had been on emacs-dev.

Maybe the outcome was something like that we can't protect everybody in
every case from shooting in the own foot, I don't recall.

Michael.

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