From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#8711: bug#26960: 26.0.50; Complaints about unused variable in cl-destructuring-bind Date: Sun, 08 May 2022 14:33:49 +0200 Message-ID: <871qx4i4pe.fsf@gnus.org> References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="729"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 26960@debbugs.gnu.org, 8711@debbugs.gnu.org, Stefan Monnier To: Helmut Eller Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun May 08 14:35:42 2022 Return-path: Envelope-to: geb-bug-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 1nng8S-000ATM-TQ for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 08 May 2022 14:35:40 +0200 Original-Received: from localhost ([::1]:60994 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nng8R-0001Qd-LB for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 08 May 2022 08:35:39 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45152) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nng82-0001QD-CP for bug-gnu-emacs@gnu.org; Sun, 08 May 2022 08:35:14 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:59731) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nng7r-0002hr-6p for bug-gnu-emacs@gnu.org; Sun, 08 May 2022 08:35:14 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nng7r-0002H2-40 for bug-gnu-emacs@gnu.org; Sun, 08 May 2022 08:35:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 08 May 2022 12:35:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 8711 X-GNU-PR-Package: emacs Original-Received: via spool by 8711-submit@debbugs.gnu.org id=B8711.16520132438657 (code B ref 8711); Sun, 08 May 2022 12:35:03 +0000 Original-Received: (at 8711) by debbugs.gnu.org; 8 May 2022 12:34:03 +0000 Original-Received: from localhost ([127.0.0.1]:53627 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nng6s-0002FU-Ii for submit@debbugs.gnu.org; Sun, 08 May 2022 08:34:02 -0400 Original-Received: from quimby.gnus.org ([95.216.78.240]:58714) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nng6q-0002Ep-FI; Sun, 08 May 2022 08:34:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=zwJWhz3b7cjiE72Val0Z80xctSspr5cXCYgN3zUaIN8=; b=PsHpgYw736VzwCvHIXgY1WN8i9 S4u5/Ug4zmtt9qXH6wpY2aSWk/zHY/9L3SWrTTF7r0W/vzcf3PrDngFdQaflCQg0jxH2IYEMmk4d1 AVpEzKQw8uRKBwB1cdNCdgUxtajrZuntyNztZbcCMrUZ8dXaFLTM/ZfK1/gfVCK6dPsU=; Original-Received: from [84.212.220.105] (helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nng6g-0008QD-6s; Sun, 08 May 2022 14:33:52 +0200 X-Now-Playing: Adult.'s _Becoming Undone_: "Undoing-Undone" In-Reply-To: (Helmut Eller's message of "Sat, 21 May 2011 20:44:18 +0200") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:231647 Archived-At: Helmut Eller writes: > There seems be no way to avoid a warning in code like this: > > ;; -*- lexical-binding: t -*- > (eval-when-compile (require 'cl)) > (defun foo (x) (destructuring-bind (_) x)) > (defun bar (x) (destructuring-bind (_) x (ignore _))) > > In foo the compiler complains because _ is never used and > it bar it complains because it is used. (I'm going through old bug reports that unfortunately weren't resolved at the time.) I can reproduce this in Emacs 25.1, but not in Emacs 29. That is, there's no warning for `foo'. There's still a warning for `bar', but that's correct, isn't it? `ignore' is just a normal function, so _ is used there. However, this example from a merged bug report is giving a warning: > ;;; -*- lexical-binding: t; -*- > (require 'cl-lib) > (cl-destructuring-bind (&whole a b &rest _) '(1 2) > (print (list a b))) And that seems like a bug? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no