From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Shigeru Fukaya <shigeru.fukaya@gmail.com>
Cc: 18767@debbugs.gnu.org
Subject: bug#18767: 24.4; incorrect byte-compile on arithmatic comparisons
Date: Mon, 20 Oct 2014 17:42:56 -0400 [thread overview]
Message-ID: <jwvoat65sk0.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <4CCFEB0DE4728Cshigeru.fukaya@gmail.com> (Shigeru Fukaya's message of "Sun, 19 Oct 2014 04:58:31 +0900")
Version:24.5
> byte-compile of arithmatic comparison operators on more than two
> arguments is incorrect.
Indeed, I was not very awake when I committed that code. I just
reverted the change so the byte-compiler simply doesn't optimize this case.
To do any better, I think we'll have to do something like:
loop over all args, doing "byte-compile-form" + "dup", and then apply
the comparisons backward, combining them with "and".
Stefan
next prev parent reply other threads:[~2014-10-20 21:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-18 19:58 bug#18767: 24.4; incorrect byte-compile on arithmatic comparisons Shigeru Fukaya
[not found] ` <handler.18767.B.141366235315401.ack@debbugs.gnu.org>
2014-10-19 10:20 ` bug#18767: Acknowledgement (24.4; incorrect byte-compile on arithmatic comparisons) Shigeru Fukaya
2014-10-20 21:42 ` Stefan Monnier [this message]
2014-10-22 9:16 ` bug#18767: 24.4; incorrect byte-compile on arithmatic comparisons Shigeru Fukaya
2014-10-22 13:39 ` Stefan Monnier
2014-10-22 16:26 ` Shigeru Fukaya
2014-10-22 17:39 ` Stefan Monnier
2014-10-22 17:58 ` Glenn Morris
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