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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Quick question regarding limited type return syntax
Date: Sat, 02 Aug 2014 10:34:53 -0400
Organization: The World Public Access UNIX, Brookline, MA
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Date: 2014-08-02T10:34:53-04:00
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> On Sat, 02 Aug 2014 09:20:45 -0400, Robert A Duff wrote:
>
>> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
>> 
>>>...Dispatching calls
>>> through class-wide access discriminants upon initialization/finalization.
>> 
>> Can you please give an example of what you mean?
>
> Components not discriminants. I had Rosen's trick in mind:
>
>    type T is ...
>        Self : not null access T := T'Unchecked_Access;

Sorry, I still don't get it.  I don't see any class-wide types or
dispatching calls there.  Also, it's illegal as written (the Rosen trick
is only allowed for limited types.)  Perhaps a complete compilable
example would help illustrate the language anomaly you are talking
about.

The Rosen trick allows you to obtain a variable view of a constant,
but that has nothing to do with initialization/finalization, so I assume
that's not what you meant.

- Bob