GNU bug report logs - #66744
30.0.50; Emacs crashes when re-dumping into the same dump file another Emacs instance is using

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Package: emacs;

Reported by: Ihor Radchenko <yantar92 <at> posteo.net>

Date: Wed, 25 Oct 2023 10:01:02 UTC

Severity: normal

Tags: notabug, wontfix

Found in version 30.0.50

Fixed in version 30.1

Done: Gerd Möllmann <gerd.moellmann <at> gmail.com>

Bug is archived. No further changes may be made.

Full log

Message #55 received at 66744 <at> debbugs.gnu.org (full text, mbox):

From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: yantar92 <at> posteo.net, 66744 <at> debbugs.gnu.org
Subject: Re: bug#66744: 30.0.50; Emacs crashes when re-dumping into the same
 dump file another Emacs instance is using
Date: Thu, 26 Oct 2023 20:26:27 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

>> > Emacs on GNU/Linux doesn't use mmap, we stopped doing this many years
>> > ago.
>> 
>> Ok, but I must admit that I don't see how that is done in pdumper.c.
>
> Then maybe I don't understand what bothers you.  What are the "changes
> made to the dump file in step 3" to which you allude?  AFRAIU, step 3
> simply loads the dump file, it doesn't change the file.  What did I
> miss?

What Ihor does is

1. Create a dump file F
2. Start an Emacs with that dump file F
3. Create F again, while the Emacs from step 2 runs
This bug report was last modified 1 year and 206 days ago.

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