From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=0.4 required=5.0 tests=BAYES_00,FORGED_MUA_MOZILLA autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: 103376,b78c363353551702 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.68.228.227 with SMTP id sl3mr13089604pbc.5.1340628690444; Mon, 25 Jun 2012 05:51:30 -0700 (PDT) Path: l9ni18210pbj.0!nntp.google.com!news2.google.com!goblin1!goblin.stu.neva.ru!noris.net!newsfeed.arcor.de!newsspool3.arcor-online.net!news.arcor.de.POSTED!not-for-mail Date: Mon, 25 Jun 2012 14:51:28 +0200 From: Georg Bauhaus User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: about the new Ada 2012 pre/post conditions References: <1hgo6aks03zy.by4pq4xbjsgf$.dlg@40tude.net> <1jvy3elqtnd1j.1sjbk32evhp1f$.dlg@40tude.net> <1oih2rok18dmt.avbwrres5k12.dlg@40tude.net> <4fe59ea0$0$9502$9b4e6d93@newsspool1.arcor-online.net> <1mkp7fzlk1b0y.1ueinfjn48fcy$.dlg@40tude.net> <4fe72b6b$0$9504$9b4e6d93@newsspool1.arcor-online.net> <1bbvp3ghpjb5s.1go1s1qvcmagh$.dlg@40tude.net> <4fe76fad$0$9507$9b4e6d93@newsspool1.arcor-online.net> <1jt8vhzxfrv2i.eohce4d3rwx1$.dlg@40tude.net> <4fe83aaa$0$6624$9b4e6d93@newsspool2.arcor-online.net> <1pkfv0tiod3rn$.onx6dmaa3if9$.dlg@40tude.net> <4fe85beb$0$6638$9b4e6d93@newsspool2.arcor-online.net> In-Reply-To: <4fe85beb$0$6638$9b4e6d93@newsspool2.arcor-online.net> Message-ID: <4fe85ed0$0$6628$9b4e6d93@newsspool2.arcor-online.net> Organization: Arcor NNTP-Posting-Date: 25 Jun 2012 14:51:29 CEST NNTP-Posting-Host: 262811d7.newsspool2.arcor-online.net X-Trace: DXC=bGEJfQW5RjL6PJ?[X6JIXEA9EHlD;3YcB4Fo<]lROoRA8kFJLh>_cHTX3jM3Y7fo7mK;2@ X-Complaints-To: usenet-abuse@arcor.de Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Date: 2012-06-25T14:51:29+02:00 List-Id: On 25.06.12 14:39, Georg Bauhaus wrote: >> > But you seemingly did not read what I wrote earlier. There is either #1 or >> > #2. > I have tried to explain that neither #1 nor #2 are applicable > because they assume applicability of exhaustive formal analysis > to general program design (not programs). Wrong frame of reference. Let me ad this: procedure P (X : S) is null; is o.K., but procedure P (X : S'Base) with Pre => ... is null; is not legal.