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From: "Matthew Heaney" <mheaney@on2.com>
Newsgroups: comp.lang.ada
Subject: Re: Size and pack
Date: Wed, 31 Oct 2001 22:53:38 -0500
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Date: 2001-10-31T22:53:38-05:00
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"Adrian Hoe" <byhoe@greenlime.com> wrote in message
news:9ff447f2.0110311758.2be52637@posting.google.com...
> "Jeff Creem" <jeff@thecreems.com> wrote in message
news:<nHRD7.162473$vq.40258001@typhoon.ne.mediaone.net>...
> > for example, the code fragment
> >
> > type My_Type is range 0 .. 3;
> > for My_Type'size use 2;
> >
> > type My_Array is array (1 .. 4) of My_Type;
> > pragma Pack (My_Array); -- Without this the following could fail
> > for My_Array'size use 8;
> >
> >
> > The pragma pack is needed I believe because the rep spec on My_Array can
> > be rejected without it

Why aren't you (Jeff) specifying the array component size?

for My_Array'Component_Size use 2;

Won't that eliminate the need for the pragma Pack?

Furthermore, isn't the size clause for My_Type redundent?  The size of a
type is the number of bits needed to represent all values in the type, which
is 2 bits.