From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.bugs Subject: bug#8545: issues with recent doprnt-related changes Date: Sun, 01 May 2011 19:59:06 -0400 Message-ID: References: <4DB50AB9.6060100@cs.ucla.edu> <83tydmaeo3.fsf@gnu.org> <4DB65FF1.5010003@cs.ucla.edu> <83aafb8p4a.fsf@gnu.org> <4DB8ABEA.3080503@cs.ucla.edu> <4DB8DAF8.7070408@cs.ucla.edu> <4DBB4E80.2020102@cs.ucla.edu> <4DBCF292.4030002@cs.ucla.edu> Reply-To: rms@gnu.org NNTP-Posting-Host: lo.gmane.org Content-Type: text/plain; charset=ISO-8859-15 X-Trace: dough.gmane.org 1304294827 24069 80.91.229.12 (2 May 2011 00:07:07 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 2 May 2011 00:07:07 +0000 (UTC) Cc: lekktu@gmail.com, 8545@debbugs.gnu.org To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon May 02 02:06:58 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1QGgfB-0005SF-IX for geb-bug-gnu-emacs@m.gmane.org; Mon, 02 May 2011 02:06:57 +0200 Original-Received: from localhost ([::1]:41586 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QGgfB-0000AX-1z for geb-bug-gnu-emacs@m.gmane.org; Sun, 01 May 2011 20:06:57 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:56864) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QGgf7-00009j-SR for bug-gnu-emacs@gnu.org; Sun, 01 May 2011 20:06:54 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QGgf6-0003NG-VS for bug-gnu-emacs@gnu.org; Sun, 01 May 2011 20:06:53 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:42091) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QGgf6-0003N8-Qc for bug-gnu-emacs@gnu.org; Sun, 01 May 2011 20:06:52 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1QGgYW-0007Px-MH; Sun, 01 May 2011 20:00:04 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Richard Stallman Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: owner@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 02 May 2011 00:00:04 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 8545 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 8545-submit@debbugs.gnu.org id=B8545.130429435428436 (code B ref 8545); Mon, 02 May 2011 00:00:04 +0000 Original-Received: (at 8545) by debbugs.gnu.org; 1 May 2011 23:59:14 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1QGgXh-0007Ob-O3 for submit@debbugs.gnu.org; Sun, 01 May 2011 19:59:13 -0400 Original-Received: from fencepost.gnu.org ([140.186.70.10]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1QGgXf-0007OP-Pn for 8545@debbugs.gnu.org; Sun, 01 May 2011 19:59:12 -0400 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.71) (envelope-from ) id 1QGgXa-0000Fo-BP; Sun, 01 May 2011 19:59:06 -0400 In-reply-to: <4DBCF292.4030002@cs.ucla.edu> (message from Paul Eggert on Sat, 30 Apr 2011 22:41:38 -0700) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Sun, 01 May 2011 20:00:04 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:46136 Archived-At: Second, it's easy to construct an example that involves only "int": int bar (int i) { return i < i + 1; } With many compilers, BAR always returns 1, even when i == INT_MAX. I see. This would break many constructions intended to test whether an operation did overflow. Is there any reliable way to test for that? -- 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/