From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: scratch/accurate-warning-pos: Solid progress: the branch now bootstraps. Date: Tue, 27 Nov 2018 21:13:46 -0800 Organization: UCLA Computer Science Department Message-ID: <416b3441-4539-e8e9-a93d-eaa6f7b6f29c@cs.ucla.edu> References: <20181125193050.GH27152@ACM> <2c2ae483-3309-f79d-07a5-30af1f49058b@cs.ucla.edu> <20181125212920.GK27152@ACM> <60ac9dfc-b540-89f9-68ea-ec7cceaa8511@cs.ucla.edu> <83in0kijz0.fsf@gnu.org> <9e216e61-7d95-94f0-cbee-593b4f32ced2@cs.ucla.edu> <20181126184359.GG4030@ACM> <55044caa-18fb-9e9a-81b4-3912f64d0aa4@cs.ucla.edu> <20181127074336.GA4705@ACM> <0ec5806a-0cc6-8b9f-6bc2-97875e36a511@cs.ucla.edu> <20181127211539.GB4705@ACM> <8c38f335-b25d-9ef6-110c-6efc4fda9d67@cs.ucla.edu> <587da59a-eed1-9fdd-f362-ea72510413dc@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1543381969 17318 195.159.176.226 (28 Nov 2018 05:12:49 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 28 Nov 2018 05:12:49 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 Cc: michael_heerdegen@web.de, Alan Mackenzie , Eli Zaretskii , cpitclaudel@gmail.com, emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Nov 28 06:12:44 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gRs9U-0004OF-9b for ged-emacs-devel@m.gmane.org; Wed, 28 Nov 2018 06:12:44 +0100 Original-Received: from localhost ([::1]:45972 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gRsBa-0003R0-Bg for ged-emacs-devel@m.gmane.org; Wed, 28 Nov 2018 00:14:54 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:43482) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gRsAe-0003Qn-0v for emacs-devel@gnu.org; Wed, 28 Nov 2018 00:13:56 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gRsAd-0003RK-ED for emacs-devel@gnu.org; Wed, 28 Nov 2018 00:13:56 -0500 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:51364) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gRsAY-0003OJ-64; Wed, 28 Nov 2018 00:13:50 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 8B72916009D; Tue, 27 Nov 2018 21:13:47 -0800 (PST) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id t9gXBah74DEx; Tue, 27 Nov 2018 21:13:46 -0800 (PST) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id C5F711600EE; Tue, 27 Nov 2018 21:13:46 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id kT4TBRlxuMci; Tue, 27 Nov 2018 21:13:46 -0800 (PST) Original-Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 95281160092; Tue, 27 Nov 2018 21:13:46 -0800 (PST) In-Reply-To: Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 131.179.128.68 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:231470 Archived-At: Stefan Monnier wrote: > If we only do it for cons cells, then we don't need hashing: we can make > "fat-cons-cells" which contain extra position info after car/cdr. Yes, that's basically what I was proposing. Also, we'd probably need a boolean flag in each struct cons_block so that C (or maybe Lisp) code can quickly distinguish between a fat pair and a thin (normal) one, which should also be cheap and easy to do. (Not that I'm volunteering to do it right now....)