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!feeder.eternal-september.org!aioe.org!.POSTED.fn3LatRFkm9/xzEj7F2/NQ.user.gioia.aioe.org!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Private extension of a synchronized interface Date: Mon, 18 Feb 2019 09:42:42 +0100 Organization: Aioe.org NNTP Server Message-ID: References: NNTP-Posting-Host: fn3LatRFkm9/xzEj7F2/NQ.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 X-Notice: Filtered by postfilter v. 0.9.2 Content-Language: en-US Xref: reader01.eternal-september.org comp.lang.ada:55562 Date: 2019-02-18T09:42:42+01:00 List-Id: On 2019-02-18 09:29, Simon Wright wrote: > "Dmitry A. Kazakov" writes: > >> You never need dispatch. When a type is derived it inherits all >> primitive operations regardless overridings. >> >> 1. The type Instance in your example has p1 >> >> 2. Since Instance is not abstract p1 of Instance cannot be abstract. >> >> Therefore x.p1 must be legal. >> >> The actual behavior is certainly a bug in the language or in the >> compiler or in both. > > You ought to distinguish between behaviour you disapprove of and > behaviour which is illegal in Ada-as-it-is when people are sking for > help with a current problem. Right. Therefore I has not excluded possibility of a language bug. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de