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From: Lutz Donnerhacke <lutz@iks-jena.de>
Newsgroups: comp.lang.ada
Subject: Re: Access type conversions, how?
Date: Wed, 14 Apr 2004 12:07:37 +0000 (UTC)
Organization: IKS GmbH Jena
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* Luke Guest wrote:
> "Lutz Donnerhacke" <lutz@iks-jena.de> wrote in message
>> Please use Address_To_Access_Conversion and map the adresses.
>
> Why? Is this a standard function?

ARM95: 13.7.2 The Package System.Address_To_Access_Conversions

>> Or (better) define a variable of the different type at the same location.
>
> I don't know what you mean here.

Mapping two repesentation at the same memory location does not generate any
code, but provide the required access.

>> An example is available in my recent posting here on "Efficient Stream_IO"
>
> Well, I've just looked and I couldn't see any use of that function.

There is no function. Only a variable of a different type mapped to the same
location. You might use "pragma Union(Variable_Record);" on GNAT to get the
same result.