From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: ptrdiff_t misuse [was :Re: (empty)] Date: Sat, 30 Jun 2012 10:27:17 +0300 Message-ID: <838vf56yzu.fsf@gnu.org> References: <83lij66yq9.fsf@gnu.org> <4FEDB953.1010800@yandex.ru> <4FEEA720.2040405@cs.ucla.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: dough.gmane.org 1341041260 28235 80.91.229.3 (30 Jun 2012 07:27:40 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 30 Jun 2012 07:27:40 +0000 (UTC) Cc: dmantipov@yandex.ru, monnier@IRO.UMontreal.CA, emacs-devel@gnu.org To: Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jun 30 09:27:40 2012 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Sks5j-0003YG-C7 for ged-emacs-devel@m.gmane.org; Sat, 30 Jun 2012 09:27:39 +0200 Original-Received: from localhost ([::1]:42457 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sks5j-0003cZ-7I for ged-emacs-devel@m.gmane.org; Sat, 30 Jun 2012 03:27:39 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:49453) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sks5g-0003cJ-HJ for emacs-devel@gnu.org; Sat, 30 Jun 2012 03:27:37 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Sks5c-0003hS-MK for emacs-devel@gnu.org; Sat, 30 Jun 2012 03:27:36 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:54411) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sks5c-0003hB-DZ for emacs-devel@gnu.org; Sat, 30 Jun 2012 03:27:32 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0M6F00M0060WTM00@a-mtaout21.012.net.il> for emacs-devel@gnu.org; Sat, 30 Jun 2012 10:27:30 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.210.75]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0M6F00M7861SLD90@a-mtaout21.012.net.il>; Sat, 30 Jun 2012 10:27:28 +0300 (IDT) In-reply-to: <4FEEA720.2040405@cs.ucla.edu> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 (beta) X-Received-From: 80.179.55.169 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:151319 Archived-At: > Date: Sat, 30 Jun 2012 02:13:36 -0500 > From: Paul Eggert > Cc: Dmitry Antipov , emacs-devel@gnu.org > > if the overflow happens to generate a small integer, Emacs will run > quickly and incorrectly without the patch in question. But since this will _never_ happen in real life, the patch in question is a net loss, because it obfuscates the code for no good reason.