From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: Should undefined behavior be encouraged in Emacs? Date: Mon, 03 Oct 2011 21:55:20 -0400 Message-ID: References: <4E89124D.8070405@cs.ucla.edu> <83ipo6rr1y.fsf@gnu.org> Reply-To: rms@gnu.org NNTP-Posting-Host: lo.gmane.org Content-Type: text/plain; charset=ISO-8859-15 X-Trace: dough.gmane.org 1317693332 2678 80.91.229.12 (4 Oct 2011 01:55:32 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 4 Oct 2011 01:55:32 +0000 (UTC) Cc: eggert@cs.ucla.edu, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Oct 04 03:55:28 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 1RAuEC-0006q4-5Y for ged-emacs-devel@m.gmane.org; Tue, 04 Oct 2011 03:55:28 +0200 Original-Received: from localhost ([::1]:58513 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAuEB-0006Wu-Eh for ged-emacs-devel@m.gmane.org; Mon, 03 Oct 2011 21:55:27 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:56441) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAuE8-0006W5-B8 for emacs-devel@gnu.org; Mon, 03 Oct 2011 21:55:25 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RAuE5-0003Af-Ne for emacs-devel@gnu.org; Mon, 03 Oct 2011 21:55:24 -0400 Original-Received: from fencepost.gnu.org ([140.186.70.10]:42953) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAuE5-0003AG-Ex for emacs-devel@gnu.org; Mon, 03 Oct 2011 21:55:21 -0400 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.71) (envelope-from ) id 1RAuE4-000651-9R; Mon, 03 Oct 2011 21:55:20 -0400 In-reply-to: <83ipo6rr1y.fsf@gnu.org> (message from Eli Zaretskii on Mon, 03 Oct 2011 18:14:01 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 140.186.70.10 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:144561 Archived-At: Undefined behavior is something that is left to the implementation, and the programmer who invokes it cannot expect anything in particular. This definition is used in standards development, and presumes that we're talking about a spec that might have various implementations. However, Emacs is one specific program, not a spec. Thus, concepts from standards development, about the relationship between the spec and its various implementations, may not transfer naturally. I don't see what "undefined behavior" would mean in the case of Emacs. -- Dr Richard Stallman President, Free Software Foundation 51 Franklin St Boston MA 02110 USA www.fsf.org www.gnu.org Skype: No way! That's nonfree (freedom-denying) software. Use free telephony http://directory.fsf.org/category/tel/