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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: GNAT Ada.Streams Bug?
Date: 26 Nov 2004 22:47:34 +0000
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Date: 2004-11-26T22:47:34+00:00
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"Warren W. Gay VE3WWG" <ve3wwg@NoSpam.cogeco.ca> writes:

> I am not concerned at all about the efficiency of this case, as you
> read the partition 4 times at boot time (less if you have fewer
> disks).  I know however, that you were stating the more general
> case.
> 
> It is disappointing to learn that basically Ada95 is "portability
> busted" when it comes to Ada.Streams. As Randy (I think) mentioned
> in the AI link, it is very difficult to adapt a stream to external
> formats - more impossible to be compiler independent at the same
> time. Since I am trying to interface a stream to the boot sector,
> this becomes a real problem that I'll have to "work around".

So the AI lets you make the streaming portable provided that
everything is a multiple of Stream_Element'Size (and, I guess, all the
participants are of the same endianness).

If those conditions are met, you have what looks like a more
convenient way of expressing representations. Otherwise, it'll have to
be the hard way .. I must say it wouldn't have occurred to me to
expect a Stream to meet your requirements. But we progress by meeting
needs, and someone has to express them!

-- 
Simon Wright                               100% Ada, no bugs.