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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Q re pack & aliased
References: <20030420134018.651050df.david@realityrift.com>
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Date: 2003-04-21T04:44:33+00:00
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> > I need to make a packed array of aliased three byte objects.  Gnat 3.15p
> > tells me it won't pack (or set 'component_size) for aliased objects, and
> > it allocates four bytes/component.  How can I get around this limitation?
>
> I'm no Ada expert just yet. But what about 'Unchecked_Access or 'Unrestricted_Access?
> If you are doing something evil maybe 'Address would work too...
  I'm just trying to write portable Ada.  The problem isn't in the access,
it's in the declaration - Gnat won't accept it.  "packing" 24 bits objects
shouldn't be all that hard on a byte oriented (x86 Windows) machine.