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From: "Jeffrey R. Carter" <spam.not.jrcarter@acm.not.spam.org>
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Subject: Re: aliased and parameters
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REH wrote:
> ...
> recv(socket, Hdr'Address, header_size);
> 
> The problem is that some Ada95 compiler are so aggressive with
> optimization that they may not "see" then Hdr is changed by recv.  At
> the very less the compiler complains (rightfully so) that Hdr is alised
> but not marked as such.  But how do enforce that if I cannot define the
> parameter as aliased?  Should I use an access type instead and convert
> it to System.Address, or is there a cleaner way?

You should not be using 'Address at all. I don't know the definition of 
Recv, so I can't say what would be better. If it's an interface to C, 
you might want an array or a C-compatible access value.

Of course, that assumes you can change the library in question.

-- 
Jeff Carter
"Death awaits you all, with nasty, big, pointy teeth!"
Monty Python & the Holy Grail
20