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From: Charly <carl.weierstrass@googlemail.com>
Subject: Re: Strange error message
Date: Sun, 1 Jun 2014 05:50:24 -0700 (PDT)
Date: 2014-06-01T05:50:24-07:00	[thread overview]
Message-ID: <c065aa1b-d72c-432f-a8f9-c144984773b6@googlegroups.com> (raw)
In-Reply-To: <g4o4rbacbb9z.tweckzb7g3gq$.dlg@40tude.net>

Am Sonntag, 1. Juni 2014 13:11:08 UTC+2 schrieb Dmitry A. Kazakov:
> On Sun, 1 Jun 2014 03:24:02 -0700 (PDT), Charly wrote:
> 
> You must override Create for High, *always*.
> 
>  
.........
> 
> 
> I believe it was a recent hack (wrongly) added to Ada that you need not to
> 
> override primitive operations returning the tagged type when the derived
> 
> type does not actually extend. I don't know if making that public or
> 
> privately changes anything. You did that privately.
> 
> 
> 
> It is an awful idea in any form. You should always override such
> 
> operations, and all out-operations, because inheriting them is a priori
> 
> unsafe.
> 
> 
> 
> -- 
> 
> Regards,
> 
> Dmitry A. Kazakov
> 
> http://www.dmitry-kazakov.de

> -- 
> 
> Regards,
> 
> Dmitry A. Kazakov
> 
> http://www.dmitry-kazakov.de


Thank you for the rapid answer. I wondered if it is a bug in GNAT.
I thought, that I always have to override abstract function and 
procedures in concrete types and can override concrete functions
and procedures only as needed.


Charly

  reply	other threads:[~2014-06-01 12:50 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-01 10:24 Strange error message Charly
2014-06-01 11:11 ` Dmitry A. Kazakov
2014-06-01 12:50   ` Charly [this message]
2014-06-01 13:54     ` Simon Wright
2014-06-01 21:18 ` Robert A Duff
2014-06-02  7:47   ` Dmitry A. Kazakov
2014-06-02 13:49     ` Robert A Duff
2014-06-02 14:55       ` Dmitry A. Kazakov
2014-06-02 17:24         ` Robert A Duff
2014-06-02 18:39       ` Shark8
2014-06-02 19:56   ` Randy Brukardt
  -- strict thread matches above, loose matches on Subject: below --
2002-11-13 10:36 strange " evangeli
2002-11-13 15:05 ` Stephen Leake
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