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From: "Hyman Rosen" <hyrosen@mail.com>
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 <u668rmhvhdub11@corp.supernews.com>
Subject: Re: Merits of re-dispatching [LONG]
Date: Fri, 8 Feb 2002 13:10:15 -0500
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Date: 2002-02-08T13:10:15-05:00
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"Matthew Heaney" <mheaney@on2.com> wrote in message news:u668rmhvhdub11@corp.supernews.com...
> Yes, but in Ada95, operations are static by default.  You have to take
> active steps in order to force the dispatching to occur.  So the scenario
> you describe cannot happen accidently.
>
> This is not the case in C++, where virtual member functions called through a
> reference or pointer automatically dispatch.  So yes you can very easily
> have the problem you cite in C++.  (Which is why many C++ books point out
> this feature of the language.)

I don't understand the argument you are making. The problem seems to me that
when you make a dispatching call in the destructor (automatically in C++ or by
request in Ada), C++ will take you to a safe function, whereas Ada will take
you to a function which can manipulate already finalized submembers.