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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Ranges and (non)static constraints
Newsgroups: comp.lang.ada
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Date: Fri, 17 Nov 2006 12:20:42 +0100
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On Fri, 17 Nov 2006 11:39:55 +0100, Grein, Christoph (Fa. ESG) wrote:

> Dmitry A. Kazakov a �crit :
> 
>> I almost agree with this. However, unfortunately Ada does not require legality of
>>   type T range 1..N;
>> for any N, as it IMO should [*]
> ...
>> * OK, there still remains a limitation on the biggest universal integer a compiler
>> can swallow, but it is a different dimension.
> 
> I cannot follow. This is legal exactly when the compiler can fulfil the requested range.
> So what are you talking about?

These are sufficiently different. Consider this example:

   N : constant := 2**64; -- Legal in GNAT
   type T is range 1..N;  -- Illegal in GNAT

(This is not a bug)

I would at least require the second be legal when the first is.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de