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From: Thierry&Annick <tajz@libertysurf.fr>
Newsgroups: comp.lang.ada
Subject: Re: GNAT Error message
Date: Mon, 18 Dec 2000 22:58:38 +0100
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Date: 2000-12-18T21:54:20+00:00
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Robert Dewar a �crit :

> In article <3A3D01EA.37CB440B@libertysurf.fr>,
>   Thierry&Annick <tajz@libertysurf.fr> wrote:
>
> > test.ada:13:38: invalid operand types for operator "-"
> > test.ada:13:38: left operand has type "Index_Type" defined
>                                                 at test.ada:2
> > test.ada:13:38: right operand has type "Index_Type" defined
> ...

> Feel free to suggest how GNAT could make this clearer (and
> submit your suggestion to report@gnat.com). I don't really
> see any way of making this clearer.

I suggest 'no binary operator "-" for enumeration type Index_Type'

>
>
> The compiler is telling you that there is no "-" operator

So it should tell it as you do.

I spent some time finding my error, I hope to remember it next time ...