GNU bug report logs - #18767
24.4; incorrect byte-compile on arithmatic comparisons

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Package: emacs;

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

Date: Sat, 18 Oct 2014 20:00:02 UTC

Severity: normal

Found in version 24.4

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

Bug is archived. No further changes may be made.

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Message #19 received at 18767 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Shigeru Fukaya <shigeru.fukaya <at> gmail.com>
Cc: 18767 <at> debbugs.gnu.org
Subject: Re: bug#18767: 24.4; incorrect byte-compile on arithmatic comparisons
Date: Wed, 22 Oct 2014 09:39:27 -0400

> I think your change of reversion will cause byte-compile error when
> more than two args are specified.

No errors, but yes, warnings.

>> loop over all args, doing "byte-compile-form" + "dup", and then apply
>> the comparisons backward, combining them with "and".
> Alternative is, If non-first args are all constants or simple
> reference, fold them with AND, otherwise call them at once by
> byte-compile-normal-call.

I guess that's OK, indeed.
I was worried that (<= 1 0 "a" nil) would return nil rather than
signal an error, but I see that this is already the case if you use
a normal call.  I installed your patch (except, using `cl-every').
Thank you,


        Stefan
This bug report was last modified 10 years and 292 days ago.

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