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From: Martin Dowie <martin.dowie@btopenworld.com>
Newsgroups: comp.lang.ada
Subject: Re: This can't be done in Ada...or?
Date: Tue, 15 Feb 2005 10:15:21 +0000 (UTC)
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Date: 2005-02-15T10:15:21+00:00
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Mark Lorenzen wrote:
> Hm yes, I think they are - as the semantics is written as an "as-if"
> semantics. But if the generic package body does not need to be
> elaborated, there will probably not be any overhead.

That 'probably' looks a little worrying to me! :-)

There's only one way to do this and that's to actually try it in your 
system.

Another change you could make that might make a difference is to change:

    Name : constant String := Expanded_Name (T'Tag);

to:

    Name : constant String := T'External_Tag;

That way you can make PragmARC.Reflection "pragma Preelaborate" and not 
have any dependency on "Ada.Tags". This change works with at least GNAT 
3.15p and ObjectAda 7.2.2.

Cheers

-- Martin