From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: buffer.c/buffer.h: How to add new buffer-local variables? Date: Mon, 08 Apr 2019 14:33:52 -0400 Message-ID: References: <3C6817C0-1CDB-4F83-805E-BF6B93C77F44@gnu.org> <87y34kl7y5.fsf@igel.home> <831s2c8kav.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="41253"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: eggert@cs.ucla.edu, emacs-devel@gnu.org, esq@lawlist.com, Andreas Schwab , acm@muc.de, dancol@dancol.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Apr 08 20:35:22 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hDZ74-000AZW-MM for ged-emacs-devel@m.gmane.org; Mon, 08 Apr 2019 20:35:22 +0200 Original-Received: from localhost ([127.0.0.1]:57171 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hDZ73-0002jf-LL for ged-emacs-devel@m.gmane.org; Mon, 08 Apr 2019 14:35:21 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:59828) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hDZ5t-0002i3-D6 for emacs-devel@gnu.org; Mon, 08 Apr 2019 14:34:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hDZ5s-0002wF-Li for emacs-devel@gnu.org; Mon, 08 Apr 2019 14:34:09 -0400 Original-Received: from chene.dit.umontreal.ca ([132.204.246.20]:59874) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hDZ5s-0002vp-DZ; Mon, 08 Apr 2019 14:34:08 -0400 Original-Received: from pastel.home (lechon.iro.umontreal.ca [132.204.27.242]) by chene.dit.umontreal.ca (8.14.7/8.14.1) with ESMTP id x38IXqdO023353; Mon, 8 Apr 2019 14:33:53 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id 5F0E067F53; Mon, 8 Apr 2019 14:33:52 -0400 (EDT) In-Reply-To: <831s2c8kav.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 08 Apr 2019 20:43:20 +0300") X-NAI-Spam-Flag: NO X-NAI-Spam-Threshold: 5 X-NAI-Spam-Score: 0 X-NAI-Spam-Rules: 2 Rules triggered EDT_SA_DN_PASS=0, RV6520=0 X-NAI-Spam-Version: 2.3.0.9418 : core <6520> : inlines <7050> : streams <1818087> : uri <2828487> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 132.204.246.20 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:235128 Archived-At: >> Perhaps adding a dummy member the same size as Lisp_Object, and using >> that as the anchor? > Could be, although this will make the struct larger than it could have > been on some systems. We could also use the last Lisp_Object element as the anchor (taking its offset plus its size as the "end offset"). Stefan