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From: PLOEDEREDER@TL-20B.ARPA
Newsgroups: comp.lang.ada
Subject: Re: What's Wrong with this Structure?
Message-ID: <8708130048.AA01476@ucbvax.Berkeley.EDU>
Date: Wed, 12-Aug-87 20:41:52 EDT
Article-I.D.: ucbvax.8708130048.AA01476
Posted: Wed Aug 12 20:41:52 1987
Date-Received: Sat, 15-Aug-87 04:41:12 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
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You have used an exceedingly nasty representation spec, which when obeyed
may cause oodles of code for accessing characters in that string. Try
using
		s at 0 range 0..39; 
instead (or do you really want it offset by 1 bit ??). With the component
clause specifing range 1..40 (incidently a very frequent unintentional
mis-typing in lieu of the above), each character in the string would cross
a byte boundary. Depending on your target machine, you might see as much as
half a page of assembly instructions to do "X.S(i)", while with a 'range 0..39'
it could be done in 1 or 2 instructions at the most. Of course, if your 
target machine isn't one of those.....

If 's at 0 range 0..39;' doesn't work, start complaining to your vendor. 

Erhard Ploedereder
Tartan Laboratories Inc.
(usual disclaimers)
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