From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Robert Thorpe Newsgroups: gmane.emacs.help Subject: Re: How to avoid compiler warning `unused lexical variable' for `dolist' or `dotimes'? Date: Fri, 08 Jan 2021 05:38:31 +0000 Message-ID: <87zh1kq97s.fsf@robertthorpeconsulting.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16095"; mail-complaints-to="usenet@ciao.gmane.io" To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jan 08 06:39:47 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kxkV0-00045m-Tw for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 08 Jan 2021 06:39:46 +0100 Original-Received: from localhost ([::1]:47366 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kxkUz-00071F-Va for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 08 Jan 2021 00:39:46 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34666) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kxkUO-0006zQ-5l for help-gnu-emacs@gnu.org; Fri, 08 Jan 2021 00:39:08 -0500 Original-Received: from outbound-smtp61.blacknight.com ([46.22.136.249]:47509) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kxkUK-0004fa-VY for help-gnu-emacs@gnu.org; Fri, 08 Jan 2021 00:39:07 -0500 Original-Received: from mail.blacknight.com (pemlinmail01.blacknight.ie [81.17.254.10]) by outbound-smtp61.blacknight.com (Postfix) with ESMTPS id 57DD0FA7ED for ; Fri, 8 Jan 2021 05:39:00 +0000 (GMT) Original-Received: (qmail 17354 invoked from network); 8 Jan 2021 05:39:00 -0000 Original-Received: from unknown (HELO rt-inspiron-3480) (rt@robertthorpeconsulting.com@[109.76.74.4]) by 81.17.254.9 with ESMTPSA (AES256-SHA encrypted, authenticated); 8 Jan 2021 05:39:00 -0000 In-Reply-To: (message from Stefan Monnier on Fri, 08 Jan 2021 00:13:44 -0500) Received-SPF: pass client-ip=46.22.136.249; envelope-from=rt@robertthorpeconsulting.com; helo=outbound-smtp61.blacknight.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:127092 Archived-At: I'm still struggling to see how this isn't a bug. Here is the original code that Jean Louis posted: > (defun db/table-id-plist (table id pg) > "Returns plist for table by its table_id" > (let* ((columns (db/table-columns table pg)) > (sql (db/sql-by-columns table columns id)) > (values (rcd-sql-first sql pg)) > (values (append values nil)) > (length (length columns)) > (plist '())) > (dotimes (i length plist) > (setf plist (plist-put plist (intern (elt columns i)) (elt values i= )))))) =20 And here is the original warning: > rcd-db.el:841:1: Warning: Unused lexical variable =E2=80=98i=E2=80=99 Jean Louis actually is using the variable i, it's not unused. You could argue that the warning should be "The three element version of dotimes is discouraged". But I can't see how you can argue that the warning is right, since i is used. BR, Robert Thorpe