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From: bobduff@world.std.com (Robert A Duff)
Subject: Re: 'size attribute inheritance
Date: 1997/08/17
Message-ID: <EF27nr.K8H@world.std.com>#1/1
X-Deja-AN: 265679959
References: <33ECF679.4B5D@lmco.com>
 <mheaney-ya023680001308972242460001@news.ni.net> <dewar.871737994@merv>
 <33F670EF.4F65@flash.net>
Organization: The World Public Access UNIX, Brookline, MA
Newsgroups: comp.lang.ada
Date: 1997-08-17T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <33F670EF.4F65@flash.net>,
Ken Garlington  <Ken.Garlington@computer.org> wrote:
>I suppose this is technically true, but couldn't the effect of
>pragam Normalize_Scalars, when combined with 'Valid and/or range
>checking, be informally described as checking for uninitialized
>variables?

Sort of, but you have to remember that (1) the check doesn't happen when
you read the uninit var -- it happens *if* and when you use it in some
way that requires a range check, and (2) it only works if there are
enough bits to store the out-of-range value (it probably won't work for
a variable of type Character or Integer, for example).

- Bob