From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#59213: Emacs 29: Edebug fails to instrument a parameter whose name begins with _ Date: Mon, 14 Nov 2022 07:56:34 -0500 Message-ID: References: Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="14401"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: 59213@debbugs.gnu.org To: Alan Mackenzie Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Nov 15 00:49:06 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 1oujCL-0003XC-Fo for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 15 Nov 2022 00:49:05 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ouioZ-0000Y9-Vf; Mon, 14 Nov 2022 18:24:32 -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 1ouifU-0004Vp-2I for bug-gnu-emacs@gnu.org; Mon, 14 Nov 2022 18:15:09 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ouZ1K-00006s-3l for bug-gnu-emacs@gnu.org; Mon, 14 Nov 2022 07:57:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ouZ1J-0007e2-O2 for bug-gnu-emacs@gnu.org; Mon, 14 Nov 2022 07:57:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 14 Nov 2022 12:57:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 59213 X-GNU-PR-Package: emacs Original-Received: via spool by 59213-submit@debbugs.gnu.org id=B59213.166843060529363 (code B ref 59213); Mon, 14 Nov 2022 12:57:01 +0000 Original-Received: (at 59213) by debbugs.gnu.org; 14 Nov 2022 12:56:45 +0000 Original-Received: from localhost ([127.0.0.1]:49108 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ouZ12-0007dX-LN for submit@debbugs.gnu.org; Mon, 14 Nov 2022 07:56:44 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:33854) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ouZ11-0007dL-5S for 59213@debbugs.gnu.org; Mon, 14 Nov 2022 07:56:43 -0500 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id B9817440801; Mon, 14 Nov 2022 07:56:37 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 8A7F84407EA; Mon, 14 Nov 2022 07:56:36 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1668430596; bh=A4QU61IVsQGDwCsHduCytfewd1+wKLdNSnBUQuVBeAE=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=gadoEBFcktWXBLQ+A+yK2L2wRJn3dFXh6SBND98hEmLDeoriRpuWJCvEIIkickb7E Aa9iHOaYg546r5jBxjAxcjn+nZ5rmiyohg6Cf+xpk4pEr30bhGKrruCGHS9ormFk6j Ey8BUcV3RqRs6Boc1yPXXuVfqaHIh2IZMn1bOo8EQvMTb2iGD1yUdYlMnHBGhFP1SH Kb43uBgZnU+9GrYYRAlxdfqetXw40eHfmCBiaFoQHmllx5mZwhJpEvmfogmx8FZfKm CbYyihPcqBalt6QXY72HwMySMSyncDyH1v9/Z6tCkq8k320MQEYxSElCwj+0pBwo8K sdPYHwN/D4XFw== Original-Received: from pastel (unknown [104.247.241.157]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 3C2521201A4; Mon, 14 Nov 2022 07:56:36 -0500 (EST) In-Reply-To: (Alan Mackenzie's message of "Mon, 14 Nov 2022 10:28:29 +0000") 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:247843 Archived-At: > More precisely, with this defun: > > (defun add (a b c) > (+ a b)) > > , instrument it for edebug. Call M-: (add 1 2 6). > > The source code with active edebug now looks like: > > (defun add (a b c) > =>(+ a b)) > > .. `e a` now returns 1. `e b` returns 2. `e c` gives the error message: > > Error: Symbol's value as variable is void: c > > .. I repeat, this is a bug. It should have returned 6. [ Well, GDB does the same and claims it's not a bug, instead it says the variable has been optimized away or something to that effect. ] Agreed. Edebug should be careful to prevent unused vars from being optimized away. I'll try and come up with a good patch for that, Stefan