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From: "Matthew Heaney" <mheaney@on2.com>
Newsgroups: comp.lang.ada
Subject: Re: Concatenation and Characters
Date: Wed, 23 Oct 2002 09:19:24 -0400
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"Grein, Christoph" <christoph.grein@eurocopter.com> wrote in message
news:mailman.1035350522.7202.comp.lang.ada@ada.eu.org...

> (I'm not so sure that the range 0..-1 is legal, but my compiler accepts it
and
> prints True twice, and I
> just do not feel like searching the RM :-(

Subtype constraints only apply when First <= Last.  If Last < First, then it
doesn't matter what that values are.  In your case, the values 0 and -1 are
both outside the range of array index subtype Positive, but it doesn't
matter, because the range is null.