From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.bugs Subject: bug#67483: Wrong warning position given by the byte compiler for a malformed function Date: Mon, 27 Nov 2023 12:40:49 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29482"; mail-complaints-to="usenet@ciao.gmane.io" To: 67483@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Nov 27 13:42:07 2023 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 1r7awA-0007YS-5q for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 27 Nov 2023 13:42:06 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r7aw4-0005x8-Mm; Mon, 27 Nov 2023 07:42:01 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7aw1-0005uz-B7 for bug-gnu-emacs@gnu.org; Mon, 27 Nov 2023 07:41:57 -0500 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1r7aw0-0002K7-8S for bug-gnu-emacs@gnu.org; Mon, 27 Nov 2023 07:41:56 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1r7aw6-0006gU-Ev for bug-gnu-emacs@gnu.org; Mon, 27 Nov 2023 07:42:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Alan Mackenzie Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 27 Nov 2023 12:42:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 67483 X-GNU-PR-Package: emacs X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.170108887925620 (code B ref -1); Mon, 27 Nov 2023 12:42:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 27 Nov 2023 12:41:19 +0000 Original-Received: from localhost ([127.0.0.1]:43456 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r7avO-0006fA-MW for submit@debbugs.gnu.org; Mon, 27 Nov 2023 07:41:19 -0500 Original-Received: from lists.gnu.org ([2001:470:142::17]:32984) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r7avN-0006el-B0 for submit@debbugs.gnu.org; Mon, 27 Nov 2023 07:41:17 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7avB-0005ea-A0 for bug-gnu-emacs@gnu.org; Mon, 27 Nov 2023 07:41:05 -0500 Original-Received: from mail.muc.de ([193.149.48.3]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7av9-0002Ea-C9 for bug-gnu-emacs@gnu.org; Mon, 27 Nov 2023 07:41:05 -0500 Original-Received: (qmail 10969 invoked by uid 3782); 27 Nov 2023 13:40:50 +0100 Original-Received: from acm.muc.de (p4fe15c1a.dip0.t-ipconnect.de [79.225.92.26]) (using STARTTLS) by colin.muc.de (tmda-ofmipd) with ESMTP; Mon, 27 Nov 2023 13:40:49 +0100 Original-Received: (qmail 25339 invoked by uid 1000); 27 Nov 2023 12:40:49 -0000 Content-Disposition: inline X-Submission-Agent: TMDA/1.3.x (Ph3nix) X-Primary-Address: acm@muc.de Received-SPF: pass client-ip=193.149.48.3; envelope-from=acm@muc.de; helo=mail.muc.de 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_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:275119 Archived-At: Hello, Emacs In any recent or semi-recent Emacs create a file bad-error-position.el with these contents: (defun foo () (let ((bar 'bar)) (if ("foo") ; Erroneous "function". (baz)))))) .. Use M-x compile-defun to compile it. This gives an error message: Buffer bad-error-position.el:2:4: Warning: `foo' is a malformed function .. This position 2:4 is wrong; it is the position of the `let' symbol. The correct position would be 3:6, the position of the `if' symbol. ######################################################################### The cause of the error is in byte-optimize-form in lisp/emacs-lisp/byte-opt.el. There, although the code recurses, it fails to push the current form onto byte-compile-form-stack. Thus when byte-compile-warn-x is called, there is nothing usable on that stack inside the let form. -- Alan Mackenzie (Nuremberg, Germany).