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From: Matthew Heaney <matthew_heaney@acm.org>
Subject: Re: Contraint error
Date: 1998/10/11
Message-ID: <m3btnjur6a.fsf@mheaney.ni.net>#1/1
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Sender: matt@mheaney.ni.net
References: <3620BB8F.2973CE00@phoenix.net> <m33e8v324t.fsf@mheaney.ni.net>
 <36211A98.8C50ABBA@phoenix.net>
NNTP-Posting-Date: Sun, 11 Oct 1998 14:02:15 PDT
Newsgroups: comp.lang.ada
Date: 1998-10-11T00:00:00+00:00
List-Id: <comp.lang.ada>

Renwick Preston <rpreston@phoenix.net> writes:

> I'm using the compiler that came with the book Ada 95 Problem Solving
> and Program Design. Actually the code should have read
> 
> If NOT June_Completed etc but I fixed the problem by adding
> 
> When Others
>    NULL;
> 
> at the end of the CASE statement. I don't understand why that fixed it
> because all the possible cases were already covered.

Was the Month object given a value?  It could be that you tried to
execute a case statement using an object that wasn't initialized, and
you were lucky enough to get an exception.