From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.devel Subject: Re: Should undefined behavior be encouraged in Emacs? Date: Mon, 03 Oct 2011 10:29:10 +0200 Message-ID: References: <4E89124D.8070405@cs.ucla.edu> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1317630560 13373 80.91.229.12 (3 Oct 2011 08:29:20 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 3 Oct 2011 08:29:20 +0000 (UTC) Cc: Emacs Development To: Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Oct 03 10:29:16 2011 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RAdtk-0007yN-IV for ged-emacs-devel@m.gmane.org; Mon, 03 Oct 2011 10:29:16 +0200 Original-Received: from localhost ([::1]:57367 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAdtk-0000Qi-4S for ged-emacs-devel@m.gmane.org; Mon, 03 Oct 2011 04:29:16 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:60824) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAdth-0000Mg-4u for emacs-devel@gnu.org; Mon, 03 Oct 2011 04:29:14 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RAdtg-0001BI-0X for emacs-devel@gnu.org; Mon, 03 Oct 2011 04:29:13 -0400 Original-Received: from mail-out.m-online.net ([212.18.0.9]:56105) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAdtf-0001At-SA for emacs-devel@gnu.org; Mon, 03 Oct 2011 04:29:11 -0400 Original-Received: from frontend1.mail.m-online.net (unknown [192.168.8.180]) by mail-out.m-online.net (Postfix) with ESMTP id 959E51C0F587; Mon, 3 Oct 2011 10:29:05 +0200 (CEST) X-Auth-Info: kmZDSm78DIFYzNB0vCZuaRYXxoU7zDHHWNujKrvfpe8= Original-Received: from linux.local (ppp-88-217-109-123.dynamic.mnet-online.de [88.217.109.123]) by mail.mnet-online.de (Postfix) with ESMTPA id 8D8831C00068; Mon, 3 Oct 2011 10:29:05 +0200 (CEST) Original-Received: by linux.local (Postfix, from userid 501) id E75921E52E8; Mon, 3 Oct 2011 10:29:10 +0200 (CEST) X-Yow: In Newark the laundromats are open 24 hours a day! In-Reply-To: <4E89124D.8070405@cs.ucla.edu> (Paul Eggert's message of "Sun, 02 Oct 2011 18:39:25 -0700") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.90 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) X-Received-From: 212.18.0.9 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:144535 Archived-At: I don't think Emacs should have undefined behaviour. It may have unspecified behaviour (ie. it may change any time), but the result should always be consistent with the documented rules. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."