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=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,73cb216d191f0fef
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII
X-Received: by 10.180.20.105 with SMTP id m9mr9155092wie.5.1366380668978;
        Fri, 19 Apr 2013 07:11:08 -0700 (PDT)
Path: 
 p18ni85637wiv.0!nntp.google.com!feeder1.cambriumusenet.nl!feed.tweaknews.nl!85.12.40.131.MISMATCH!xlned.com!feeder3.xlned.com!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!border4.nntp.ams.giganews.com!border2.nntp.ams.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!nrc-news.nrc.ca!News.Dal.Ca!citadel.nobulus.com!goblin1!goblin.stu.neva.ru!eternal-september.org!feeder.eternal-september.org!mx05.eternal-september.org!.POSTED!not-for-mail
From: "J-P. Rosen" <rosen@adalog.fr>
Newsgroups: comp.lang.ada
Subject: Re: Is this expected behavior or not
Date: Thu, 11 Apr 2013 15:49:03 +0200
Organization: A noiseless patient Spider
Message-ID: <kk6erc$vph$2@dont-email.me>
References: <c988e09f-8532-4840-9749-b61aa39551b4@googlegroups.com>
 <wdlyfbnwcnp7.10c9btwjmpm7j.dlg@40tude.net> <kivi42$hmu$1@munin.nbi.dk>
 <cqf0yy6q930$.1sdzw45bc0c1w.dlg@40tude.net> <kj2e90$9iu$1@munin.nbi.dk>
 <byacn0wck9qt$.norrlukaw80l$.dlg@40tude.net> <kj5cqn$8q7$1@munin.nbi.dk>
 <1gnmajx2fdjju.1bo28xwmzt1nr.dlg@40tude.net> <kjd9ec$6lr$1@munin.nbi.dk>
 <3gv2jwc95otm.pl2aahsh9ox8.dlg@40tude.net> <kjfk1t$38n$1@munin.nbi.dk>
 <1gkxiwepaxvtt$.u3ly33rbwthf.dlg@40tude.net> <kjig2j$nof$1@munin.nbi.dk>
 <1fmcdkj58brky.bjedt0pr39cd$.dlg@40tude.net> <kjknuu$gc8$1@munin.nbi.dk>
 <1bj564vat3q1j$.1s4d00rlzx4ux$.dlg@40tude.net> <kjnt9t$ia$1@munin.nbi.dk>
 <igo6blwn0oas$.wifvpq91hm9m.dlg@40tude.net> <kk27vf$uco$1@munin.nbi.dk>
 <8bj2k30k7i19.w7ehsldwbf7x.dlg@40tude.net> <kk4ns0$7b7$1@munin.nbi.dk>
 <1o34nhpfuy6yl$.2orlukd1elr7.dlg@40tude.net>
Mime-Version: 1.0
Injection-Date: Thu, 11 Apr 2013 13:46:20 +0000 (UTC)
Injection-Info: mx05.eternal-september.org;
 posting-host="9a0d11e58ba588466424cad2fbc22465";
	logging-data="32561"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX18yJi9R0oj7+zBDLgCRcC/N"
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
 rv:17.0) Gecko/20130328 Thunderbird/17.0.5
In-Reply-To: <1o34nhpfuy6yl$.2orlukd1elr7.dlg@40tude.net>
Cancel-Lock: sha1:pxipvhu4pmb/P4CwUmn9dRIOcuM=
X-Enigmail-Version: 1.5.1
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
Date: 2013-04-11T15:49:03+02:00
List-Id: <comp.lang.ada>

Le 11/04/2013 09:59, Dmitry A. Kazakov a �crit :
> type Complex is new Real with record
>    Img : Float;
> end record;
> 
> How is the compiler supposed to inherit "+"?

The problem is not in the language. It is a wrong modelling, since a
complex is not a specialisation of a real.

-- 
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr