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From: Maciej Sobczak <see.my.homepage@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Gem 39 - compiler specific?
Date: Fri, 4 Sep 2009 13:34:36 -0700 (PDT)
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Date: 2009-09-04T13:34:36-07:00
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On 4 Wrz, 15:06, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
wrote:

> > Hint: interfacing with other languages (notably C and C++) with
> > libraries that have some callback or object map functionality.
>
> You mean void *? That is Address (or some access type), not a bit pattern.

But as long as the C (or C++) component cannot do anything with it,
the fact that it is an address of something that exists outside of
that component's domain is irrelevant. It is really just a bunch of
opaque bits.

> In short, you never needed Unchecked_Conversion that would behave
> differently from Address_To_Access_Conversions does.

In my case, no - because trivially I never needed U_C at all.

(and then I have found gem 39)

--
Maciej Sobczak * www.msobczak.com * www.inspirel.com

Database Access Library for Ada: www.inspirel.com/soci-ada