GNU bug report logs - #39233
.elc file - possibly outdated backward compatibility comments

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Package: emacs;

Reported by: Stefan Kangas <stefan <at> marxist.se>

Date: Wed, 22 Jan 2020 08:45:02 UTC

Severity: minor

Fixed in version 28.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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Message #19 received at 39233 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 39233 <at> debbugs.gnu.org, stefan <at> marxist.se
Subject: Re: bug#39233: .elc file - possibly outdated backward compatibility
 comments
Date: Fri, 24 Jan 2020 09:22:49 -0500

> Will these changes still allow old Emacs binaries to load *.elc files
> compiled by Emacs after these changes?

New Emacsen loading old .elc won't be affected.

Old Emacsen loading .elc files compiled by new Emacsen is something that
has always been risky, tho it has sometimes worked.  My proposal is to
make it emit a warning (so it will work as much as it does now, but
will bring to the attention of the user that it's in murky territory).


        Stefan
This bug report was last modified 4 years and 245 days ago.

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