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=-0.3 required=5.0 tests=BAYES_00, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: Georg Bauhaus Newsgroups: comp.lang.ada Subject: Re: How to get nice with GNAT? Date: Wed, 26 Nov 2014 12:55:39 +0100 Organization: A noiseless patient Spider Message-ID: References: <969708583438656051.436159nonlegitur-futureapps.invalid@reader80.eternal-september.org> Reply-To: nonlegitur@futureapps.de Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Wed, 26 Nov 2014 11:55:26 +0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="b96887e80893c84a90c3007226ca0d1c"; logging-data="22494"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+0N2CEL5Jj0cK/egdY4iyehA5fAPJn8jE=" User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 In-Reply-To: Cancel-Lock: sha1:KVM1BAvskEiBRUOjQ+F0PYOoseU= Xref: news.eternal-september.org comp.lang.ada:23738 Date: 2014-11-26T12:55:39+01:00 List-Id: On 26.11.14 08:35, Simon Wright wrote: > Not an argument that applies to point-defence missile systems! That's good to know. I take it to mean that exceptions will less frequently have this tendency to backfire, an effect that checking return values in C can so easily produce: extern int foo(...); if (foo(...) < 0) { /* do something assuming that negative return values are error codes. */ And forgot overflow + wrap around. Ouch! This is another argument against when others => in Ada programs, too, unless there is a very good reason to include a catch-all.