GNU bug report logs - #53071
28.0.90; Emacs 28 regression: incorrect code generation for complex pcase forms?

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Package: emacs;

Reported by: Philipp Stephani <p.stephani2 <at> gmail.com>

Date: Fri, 7 Jan 2022 09:37:02 UTC

Severity: normal

Found in version 28.0.90

Done: Mattias Engdegård <mattiase <at> acm.org>

Bug is archived. No further changes may be made.

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Message #25 received at 53071 <at> debbugs.gnu.org (full text, mbox):

From: Mattias Engdegård <mattiase <at> acm.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Philipp <p.stephani2 <at> gmail.com>, Paul Pogonyshev <pogonyshev <at> gmail.com>,
 53071 <at> debbugs.gnu.org
Subject: Re: bug#53071: 28.0.90; Emacs 28 regression: incorrect code
 generation for complex pcase forms?
Date: Wed, 12 Jan 2022 20:09:26 +0100

12 jan. 2022 kl. 17.58 skrev Eli Zaretskii <eliz <at> gnu.org>:

> So I'm about to revert this backport, but I'm prepared to hear
> arguments why shouldn't I.

I broke protocol by pushing it to the stable branch in this phase without permission. Sorry about that; the change has now been reverted. Will be more careful in the future.

> From my POV, the regression is very minor, and it doesn't justify such
> a non-trivial change in such a central place.

I personally don't care much about it since I don't use Emacs 28 but would certainly not prefer at least two known, documented and harmful bugs reported by our users over some vague hypothetical conjectured problem that might arise.

>  If you think the
> problem is serious, I'd rather revert the change we did which produced
> the regression in the first place (assuming it's not too complicated).

That would be inadvisable as it would introduce yet another bug, the fix of which was the immediate cause of the regression.
This bug report was last modified 3 years and 131 days ago.

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