GNU bug report logs - #17475
24.3.91; bug of byte-optimize-zerop

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Package: emacs;

Reported by: Shigeru Fukaya <shigeru.fukaya <at> gmail.com>

Date: Mon, 12 May 2014 15:12:02 UTC

Severity: minor

Found in version 24.3.91

Done: Stefan Monnier <monnier <at> iro.umontreal.ca>

Bug is archived. No further changes may be made.

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Shigeru Fukaya <shigeru.fukaya <at> gmail.com>
Cc: 17475 <at> debbugs.gnu.org
Subject: bug#17475: 24.3.91; bug of byte-optimize-zerop
Date: Tue, 20 May 2014 14:32:49 -0400

> zerop itself is not an error-free fuction.
> I'll change my poroposal code.

> (defun byte-optimize-zerop (form)
>   (cond ((numberp (nth 1 form))
>          (eval form))
> 	((list '= (nth 1 form) 0))))

Actually, you can drop the first option since the optimizer rules for
`=' will take care of it for us.


        Stefan
This bug report was last modified 10 years and 358 days ago.

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