GNU bug report logs - #65017
29.1; Byte compiler interaction with cl-lib function objects, removes symbol-function

Previous Next

Package: emacs;

Reported by: Eric Marsden <eric.marsden <at> risk-engineering.org>

Date: Wed, 2 Aug 2023 13:34:02 UTC

Severity: normal

Found in version 29.1

Done: Alan Mackenzie <acm <at> muc.de>

Bug is archived. No further changes may be made.

Full log

Message #20 received at 65017 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Mattias Engdegård <mattias.engdegard <at> gmail.com>
Cc: Alan Mackenzie <acm <at> muc.de>, 65017 <at> debbugs.gnu.org,
 Eric Marsden <eric.marsden <at> risk-engineering.org>
Subject: Re: bug#65017: 29.1; Byte compiler interaction with cl-lib function
 objects, removes symbol-function
Date: Thu, 03 Aug 2023 12:36:02 -0400

>>    (let ((symbols-with-pos-enabled nil))
>>      (eq f (car cl--labels-convert-cache)))
> As far as the LAP peephole optimiser is concerned, eq commutes with unbind
> so that let-binding will vanish.

Hmm... so a bug in the optimizer because the new `eq` semantics breaks
a previous assumption  :-(

The positive side is that this optimization is less important for
lexbind code.


        Stefan
This bug report was last modified 1 year and 337 days ago.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.