From: Michael Heerdegen <michael_heerdegen@web.de>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: "Štěpán Němec" <stepnem@gmail.com>, emacs-devel@gnu.org
Subject: Re: emacs-27 eebfb72 1/2: Document constant vs mutable objects better
Date: Mon, 20 Apr 2020 02:18:01 +0200 [thread overview]
Message-ID: <87wo6bau2u.fsf@web.de> (raw)
In-Reply-To: <b07af598-2075-b810-1b72-b49a6cfd15e6@cs.ucla.edu> (Paul Eggert's message of "Sun, 19 Apr 2020 16:48:46 -0700")
Paul Eggert <eggert@cs.ucla.edu> writes:
> No, there are exceptions. For example the following makes my Emacs
> dump core, even though all it does is modify a string.
>
> (aset (symbol-name 'cons) 0 ?x)
>
> It's trying to change the spelling of the name of the 'cons' function,
> but that spelling is in memory that the operating system protects on
> my platform.
What you didn't say (directly) is that this means your Emacs will crash
if you eval this. It would have been...good.
Michael.
next prev parent reply other threads:[~2020-04-20 0:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200418200112.26900.1274@vcs0.savannah.gnu.org>
[not found] ` <20200418200114.85C8C20A2B@vcs0.savannah.gnu.org>
2020-04-18 21:24 ` emacs-27 eebfb72 1/2: Document constant vs mutable objects better Štěpán Němec
2020-04-18 21:57 ` Drew Adams
2020-04-19 20:37 ` Paul Eggert
2020-04-19 22:33 ` Štěpán Němec
2020-04-19 23:48 ` Paul Eggert
2020-04-20 0:18 ` Michael Heerdegen [this message]
2020-04-20 10:05 ` emacs-27 eebfb72 1/2: Document constant vs mutable objects better, Re: emacs-27 eebfb72 1/2: Document constant vs mutable objects better, " Štěpán Němec
2020-04-20 23:18 ` Michael Heerdegen
2020-04-22 17:54 ` Paul Eggert
2020-05-02 12:50 ` Štěpán Němec
2020-05-02 21:08 ` Paul Eggert
2020-04-20 0:16 ` Michael Heerdegen
2020-04-21 1:48 ` Richard Stallman
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