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,ea5071f634c2ea8b X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.68.39.100 with SMTP id o4mr3889411pbk.0.1322046252275; Wed, 23 Nov 2011 03:04:12 -0800 (PST) Path: lh20ni8738pbb.0!nntp.google.com!news1.google.com!news4.google.com!feeder1-2.proxad.net!proxad.net!feeder2-2.proxad.net!npeer.de.kpn-eurorings.net!npeer-ng0.de.kpn-eurorings.net!newsfeed.arcor.de!newsspool3.arcor-online.net!news.arcor.de.POSTED!not-for-mail Date: Wed, 23 Nov 2011 12:03:34 +0100 From: Georg Bauhaus User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Generic-Package Elaboration Question / Possible GNAT Bug. References: <7bf9bc32-850a-40c6-9ae2-5254fe220533@f29g2000yqa.googlegroups.com> <3snehoqgs8ia$.1nobjem6g6hx6$.dlg@40tude.net> <128rdz2581345$.c4td19l7qp9z$.dlg@40tude.net> <16ipwvpdavifr$.17bxf7if7f6kh$.dlg@40tude.net> <4ecb78b1$0$6643$9b4e6d93@newsspool2.arcor-online.net> <1iofgbqznsviu$.phvidtvxlyj4$.dlg@40tude.net> <4ecbb96e$0$6581$9b4e6d93@newsspool3.arcor-online.net> <4ecbdfdb$0$6629$9b4e6d93@newsspool2.arcor-online.net> <12hfiflyf7pr5$.l3pkpgoid8xt$.dlg@40tude.net> <1ecuhb030iugz.4q1hfjx371xa.dlg@40tude.net> <4ecc393d$0$7625$9b4e6d93@newsspool1.arcor-online.net> <124aq618dmove.884jj64mzm6w$.dlg@40tude.net> <1jxx617mf2cqf$.1j076axdq83mr$.dlg@40tude.net> In-Reply-To: <1jxx617mf2cqf$.1j076axdq83mr$.dlg@40tude.net> Message-ID: <4eccd308$0$6623$9b4e6d93@newsspool2.arcor-online.net> Organization: Arcor NNTP-Posting-Date: 23 Nov 2011 12:03:36 CET NNTP-Posting-Host: 25cd9d2a.newsspool2.arcor-online.net X-Trace: DXC=:T_\MN7ZUA2Tia]Ho99G50A9EHlD;3Yc24Fo<]lROoR18kFejV81:G4`DH3cX On 23.11.11 10:56, Dmitry A. Kazakov wrote: > P.S. I hope everybody agrees that dynamic pre-/post-conditions are a part > of the implementation? I don't agree. pre/post should specify what the implementation is supposed to do. CS trivia that programs behave differently depending on Assertion_Policy simply do not matter, since the goal is to arrive at programs whose checks are a consequence of the program without them: turn assertion checking off and the program's effect on the environment are the same. "The same" means: for all relevant precisions of measurement of "same effect". > The rest is simple. [A comparable case is barriers > of entries.] No! Absolutely incomparable intent!