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#65051: internal_equal manipulates symbols with position without checking symbols-with-pos-enabled. Date: Sat, 5 Aug 2023 11:52:52 +0000 Message-ID: References: <83leeqvpx8.fsf@gnu.org> <83h6pevnd0.fsf@gnu.org> <838raqvg91.fsf@gnu.org> <83r0ohsqmp.fsf@gnu.org> 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="19558"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 65051@debbugs.gnu.org, acm@muc.de, Stefan Monnier To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Aug 05 13:54:28 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 1qSFrY-0004um-45 for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 05 Aug 2023 13:54:28 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qSFrB-0001YK-7c; Sat, 05 Aug 2023 07:54:05 -0400 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 1qSFr9-0001WN-82 for bug-gnu-emacs@gnu.org; Sat, 05 Aug 2023 07:54:03 -0400 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 1qSFr9-0007du-0G for bug-gnu-emacs@gnu.org; Sat, 05 Aug 2023 07:54:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qSFr8-00014M-T0 for bug-gnu-emacs@gnu.org; Sat, 05 Aug 2023 07:54:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Alan Mackenzie Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 05 Aug 2023 11:54:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 65051 X-GNU-PR-Package: emacs Original-Received: via spool by 65051-submit@debbugs.gnu.org id=B65051.16912363824004 (code B ref 65051); Sat, 05 Aug 2023 11:54:02 +0000 Original-Received: (at 65051) by debbugs.gnu.org; 5 Aug 2023 11:53:02 +0000 Original-Received: from localhost ([127.0.0.1]:55997 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qSFqA-00012W-C8 for submit@debbugs.gnu.org; Sat, 05 Aug 2023 07:53:02 -0400 Original-Received: from mx3.muc.de ([193.149.48.5]:37008) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qSFq7-000120-7H for 65051@debbugs.gnu.org; Sat, 05 Aug 2023 07:53:00 -0400 Original-Received: (qmail 16272 invoked by uid 3782); 5 Aug 2023 13:52:53 +0200 Original-Received: from acm.muc.de (p4fe15973.dip0.t-ipconnect.de [79.225.89.115]) (using STARTTLS) by colin.muc.de (tmda-ofmipd) with ESMTP; Sat, 05 Aug 2023 13:52:52 +0200 Original-Received: (qmail 21471 invoked by uid 1000); 5 Aug 2023 11:52:52 -0000 Content-Disposition: inline In-Reply-To: <83r0ohsqmp.fsf@gnu.org> X-Submission-Agent: TMDA/1.3.x (Ph3nix) X-Primary-Address: acm@muc.de 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:266772 Archived-At: Hello, Eli. On Sat, Aug 05, 2023 at 13:57:50 +0300, Eli Zaretskii wrote: > > Date: Sat, 5 Aug 2023 10:45:37 +0000 > > Cc: 65051@debbugs.gnu.org, acm@muc.de > > From: Alan Mackenzie [ .... ] > > > So we can have two different copies of #, such that > > > their hex values are different? Isn't that a bug? why don't we > > > conflate such identical symbols? > > No, it's not a bug, anymore than having two `equal' copies of '(a b c) > > would be a bug. > But with symbols we store them in obarray, and obarray ought to find > the existing slot for # and reuse it, rather than > create a new slot? No, only the bare symbol is in the obarray. The symbol with position itself is a pseudovector, with contents (i) a bare symbol (a Lisp_Object "pointing at" the obarray) and (ii) the unsigned integer position. -- Alan Mackenzie (Nuremberg, Germany).