From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: CHECK_STRUCTS/dmpstruct.h mechanism is broken. Date: Mon, 4 Mar 2019 18:17:44 -0800 Organization: UCLA Computer Science Department Message-ID: References: <20190228202146.GC4686@ACM> <20190228205955.GD4686@ACM> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="48921"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 To: Alan Mackenzie , emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Mar 05 03:18:37 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 1h0zfB-000Ccb-4o for ged-emacs-devel@m.gmane.org; Tue, 05 Mar 2019 03:18:37 +0100 Original-Received: from localhost ([127.0.0.1]:36085 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h0zfA-000614-4r for ged-emacs-devel@m.gmane.org; Mon, 04 Mar 2019 21:18:36 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:56722) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h0zeR-00060u-A7 for emacs-devel@gnu.org; Mon, 04 Mar 2019 21:17:52 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h0zeQ-0000IX-7r for emacs-devel@gnu.org; Mon, 04 Mar 2019 21:17:51 -0500 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:38034) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h0zeN-0000G4-2x for emacs-devel@gnu.org; Mon, 04 Mar 2019 21:17:48 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 4AB2F16147D; Mon, 4 Mar 2019 18:17:45 -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 HW4Eki-gJLlN; Mon, 4 Mar 2019 18:17:44 -0800 (PST) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 8BE6A161486; Mon, 4 Mar 2019 18:17:44 -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 sxvpOyc8523t; Mon, 4 Mar 2019 18:17:44 -0800 (PST) Original-Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 71DB6161473; Mon, 4 Mar 2019 18:17:44 -0800 (PST) Openpgp: preference=signencrypt Autocrypt: addr=eggert@cs.ucla.edu; prefer-encrypt=mutual; keydata= xsFNBEyAcmQBEADAAyH2xoTu7ppG5D3a8FMZEon74dCvc4+q1XA2J2tBy2pwaTqfhpxxdGA9 Jj50UJ3PD4bSUEgN8tLZ0san47l5XTAFLi2456ciSl5m8sKaHlGdt9XmAAtmXqeZVIYX/UFS 96fDzf4xhEmm/y7LbYEPQdUdxu47xA5KhTYp5bltF3WYDz1Ygd7gx07Auwp7iw7eNvnoDTAl KAl8KYDZzbDNCQGEbpY3efZIvPdeI+FWQN4W+kghy+P6au6PrIIhYraeua7XDdb2LS1en3Ss mE3QjqfRqI/A2ue8JMwsvXe/WK38Ezs6x74iTaqI3AFH6ilAhDqpMnd/msSESNFt76DiO1ZK QMr9amVPknjfPmJISqdhgB1DlEdw34sROf6V8mZw0xfqT6PKE46LcFefzs0kbg4GORf8vjG2 Sf1tk5eU8MBiyN/bZ03bKNjNYMpODDQQwuP84kYLkX2wBxxMAhBxwbDVZudzxDZJ1C2VXujC OJVxq2kljBM9ETYuUGqd75AW2LXrLw6+MuIsHFAYAgRr7+KcwDgBAfwhPBYX34nSSiHlmLC+ KaHLeCLF5ZI2vKm3HEeCTtlOg7xZEONgwzL+fdKo+D6SoC8RRxJKs8a3sVfI4t6CnrQzvJbB n6gxdgCu5i29J1QCYrCYvql2UyFPAK+do99/1jOXT4m2836j1wARAQABzSBQYXVsIEVnZ2Vy dCA8ZWdnZXJ0QGNzLnVjbGEuZWR1PsLBfgQTAQIAKAUCTIByZAIbAwUJEswDAAYLCQgHAwIG FQgCCQoLBBYCAwECH In-Reply-To: <20190228205955.GD4686@ACM> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:233839 Archived-At: On 2/28/19 12:59 PM, Alan Mackenzie wrote: > is all this really needed? Is pdumper.c really that fragile, > that it can't cope with changes in certain structs? No, it's not needed, and in my experience the mechanism's costs far exceed any benefit. Every time it has complained to me, it has been a false alarm. Conversely, it has not caught any of the mistakes I've made when making changes that affect the pdumper. So its batting average is .000 and it's cost me far too much irritation (admittedly minor each time, but it adds up ...). The Emacs source code has thousands of interconnections, all of which have to be just right to get it to work. There is nothing special about the interconnections to the pdumper that justify this extra level of bureaucracy.