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=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail From: Simon Wright Newsgroups: comp.lang.ada Subject: Re: How to get Ada to ?cross the chasm?? Date: Thu, 10 May 2018 20:36:04 +0100 Organization: A noiseless patient Spider Message-ID: References: <322f9b26-01de-4753-bb50-6ef2f3d993d8@googlegroups.com> <87a7th9pd1.fsf@nightsong.com> <87h8no1nli.fsf@nightsong.com> <874ljo1hvy.fsf@nightsong.com> <87vac4z2lh.fsf@nightsong.com> <87lgcszjdn.fsf@nightsong.com> <87sh6z1kkg.fsf@nightsong.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: reader02.eternal-september.org; posting-host="4ad62473ff9dd9ec67a499bd743818bb"; logging-data="12298"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/LykO69YwfqkrAE5ykPTg9UOOAG91UzA4=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (darwin) Cancel-Lock: sha1:ByEEKwy7ULSdbCxuUMfuzlkIj8g= sha1:oYvhL1PHKf1SamG8QaRgQPlu3KQ= Xref: reader02.eternal-september.org comp.lang.ada:52207 Date: 2018-05-10T20:36:04+01:00 List-Id: Dennis Lee Bieber writes: > I have a strong suspicion that pre/post-conditions would be considered > dead code to be removed from avionics software If you've proved that the conditions won't be violated, you needn't generate code to check them - any more than you need to generate code for language-defined checks. Then you end up passing invalid data to your inertial reference system ... oops