From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Shigeru Fukaya Newsgroups: gmane.emacs.bugs Subject: bug#17475: 24.3.91; bug of byte-optimize-zerop Date: Tue, 13 May 2014 00:11:11 +0900 Message-ID: <25CF6DF4691984shigeru.fukaya@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1399907555 13469 80.91.229.3 (12 May 2014 15:12:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 12 May 2014 15:12:35 +0000 (UTC) To: 17475@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon May 12 17:12:28 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Wjrtx-0002st-Ci for geb-bug-gnu-emacs@m.gmane.org; Mon, 12 May 2014 17:12:25 +0200 Original-Received: from localhost ([::1]:38304 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wjrtw-0002lw-VY for geb-bug-gnu-emacs@m.gmane.org; Mon, 12 May 2014 11:12:24 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55381) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wjrtk-0002f5-99 for bug-gnu-emacs@gnu.org; Mon, 12 May 2014 11:12:21 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wjrtb-00065Y-7z for bug-gnu-emacs@gnu.org; Mon, 12 May 2014 11:12:12 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:43493) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wjrtb-00065N-4P for bug-gnu-emacs@gnu.org; Mon, 12 May 2014 11:12:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Wjrta-00065A-Lu for bug-gnu-emacs@gnu.org; Mon, 12 May 2014 11:12:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Shigeru Fukaya Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 12 May 2014 15:12:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 17475 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.139990749723338 (code B ref -1); Mon, 12 May 2014 15:12:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 12 May 2014 15:11:37 +0000 Original-Received: from localhost ([127.0.0.1]:60844 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WjrtA-00064L-FG for submit@debbugs.gnu.org; Mon, 12 May 2014 11:11:36 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:52937) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Wjrt7-00063x-OI for submit@debbugs.gnu.org; Mon, 12 May 2014 11:11:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wjrst-0005nR-9g for submit@debbugs.gnu.org; Mon, 12 May 2014 11:11:28 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:46840) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wjrst-0005nN-6U for submit@debbugs.gnu.org; Mon, 12 May 2014 11:11:19 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54461) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wjrsk-0002cl-4s for bug-gnu-emacs@gnu.org; Mon, 12 May 2014 11:11:19 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wjrsb-0005gJ-4m for bug-gnu-emacs@gnu.org; Mon, 12 May 2014 11:11:10 -0400 Original-Received: from mail-pa0-x22f.google.com ([2607:f8b0:400e:c03::22f]:54136) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wjrsa-0005fe-Ub for bug-gnu-emacs@gnu.org; Mon, 12 May 2014 11:11:01 -0400 Original-Received: by mail-pa0-f47.google.com with SMTP id lf10so6270786pab.20 for ; Mon, 12 May 2014 08:10:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:subject:date:mime-version:content-type :content-transfer-encoding:message-id; bh=lUV2/s5xl4EDOSyJH482G/UgqvJZ3FDqEreek/cZ9Ec=; b=NGp7DXXeYP3dZkvW/5kmBh7JzGYmuuo8mmBLrqQw+8dPKVSLPkNf15oAc2gLN82ojm mH1Fep784CCHD36bl2mK2+SBNwmatUCvUv3nujDBnpxSMG7vnGOr3kd/1l8XBfcgwJPh 6VvgAjPqeonbJaAIVtz1xlJZ0smqn5ddAIZNnsF3lODt2tVEUtjOFx/bCGrUOf7rtC6a 0Yc2KVQNnGg70we/bQ/3wIWyKxnAGJXCMdICyaLagqO7D+73r/oH4IAz0km3rwj/kv/X pdS00W8MVoUeZRNMpeRnMXk0Of05bNRz0CqCCBa2z0cp5Xy3HgCzXFzeVTr2IWKmfrL4 7rnw== X-Received: by 10.66.146.170 with SMTP id td10mr56713979pab.105.1399907459340; Mon, 12 May 2014 08:10:59 -0700 (PDT) Original-Received: from gmail.com (115x125x38x6.ap115.ftth.ucom.ne.jp. [115.125.38.6]) by mx.google.com with ESMTPSA id ek2sm23369077pbd.30.2014.05.12.08.10.57 for (version=TLSv1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 12 May 2014 08:10:58 -0700 (PDT) X-Mailer: HidemaruMail 6.24 (WinNT,602) X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:88971 Archived-At: `byte-optimize-zerop' is badly implemented. Even when `byte-compile-delete-errors' is non-nil, bute-compiled code may signal an error. (= FORM 0) and (zerop FORM) are functionally equal, besides, the former is better when byte-compiled. The following is the poor alternative. I can't make a smart code without creating a new function. (defun byte-optimize-zerop (form) (cond ((numberp (nth 1 form)) (eval form)) (byte-compile-delete-errors `(and (member ,(nth 1 form) (quote 0 0.0))) t) ((list '= (nth 1 form) 0)))) -- Shigeru