From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: CVE-2017-14482 - Red Hat Customer Portal Date: Sun, 24 Sep 2017 08:47:35 +0200 Organization: Aioe.org NNTP Server Message-ID: <86o9q0a8zc.fsf@zoho.com> References: <2e991bb7-c570-49ce-be94-3654945bb4b5@mousecar.com> <87d16jxjz6.fsf@eps142.cdf.udc.es> <861smzcgx3.fsf@zoho.com> <1b3bec6e-d4d5-37a7-ba54-49bd2d8281bd@yandex.com> <86k20qbcu9.fsf@zoho.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: blaine.gmane.org 1506235860 4226 195.159.176.226 (24 Sep 2017 06:51:00 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 24 Sep 2017 06:51:00 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sun Sep 24 08:50:55 2017 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dw0kZ-0000Kc-4X for geh-help-gnu-emacs@m.gmane.org; Sun, 24 Sep 2017 08:50:47 +0200 Original-Received: from localhost ([::1]:37097 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dw0kg-0004yo-Jb for geh-help-gnu-emacs@m.gmane.org; Sun, 24 Sep 2017 02:50:54 -0400 Original-Path: usenet.stanford.edu!news.tele.dk!news.tele.dk!small.news.tele.dk!newsfeed.xs4all.nl!newsfeed8.news.xs4all.nl!2a00:1d38:fa:105::183.MISMATCH!feed.usenet.farm!feeder3.usenet.farm!feeders.as203319.net!feeder01.as203319.net!aioe.org!.POSTED!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 39 Original-NNTP-Posting-Host: XiPr5pdukK7aCRjr/wfS1Q.user.gioia.aioe.org Original-X-Complaints-To: abuse@aioe.org Cancel-Lock: sha1:IAhDwCmQgPQ6/yUomrI2zUr9tFM= Mail-Copies-To: never X-Notice: Filtered by postfilter v. 0.8.2 Original-Xref: usenet.stanford.edu gnu.emacs.help:220270 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:114376 Archived-At: Mario Castelán Castro wrote: > You seem to be confused, verifying that > a program is correct *requires* a model. > Verifying the model is a different and > separate task. A very, very small fraction of programmers will ever care to (or indeed be able to) create a model of the program just to verify the model and then verify that the model is in agreement with the program - this is just insane to ask of anyone, and it isn't realistic one bit to ever be a practical alternative. > Random testing is very inefficient because > most inputs are garbage and are treated > uniformly by the program under test. > For example, feeding random input to > a compiler will result almost surely in only > ill-formed programs To a compiler - ? This can be done with simple shell tools that perform basic computation! > But like I said, testing is fundamentally > flawed. Testing can tell you that a program > is defective, but not that a program is free > from defects! That's an intellectual excercise university buffs do on toy/demo programs. But here, it is not programming theory for space-fleet cadets anymore, but a whole different domain, which I like to call "reality". -- underground experts united http://user.it.uu.se/~embe8573