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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Possible Ada deficiency? (goto)
Date: Sat, 15 Jan 2005 18:58:35 +0100
Organization: cbb software GmbH
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Date: 2005-01-15T18:58:35+01:00
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On 15 Jan 2005 12:34:59 -0500, Robert A Duff wrote:

>     procedure P is
>         --(1)
>     begin
>         for Mumble in 1..10 loop
>             <<Mumble>> --(2)
>             null;
>         end loop;
>     end P;
> 
> Here's why the above is illegal:  There is an implicit declaration of
> label Mumble at that place marked "--(1)".

Why not in the loop's body? After all one cannot jump into the loop body?

> At the place marked "--(2)",
> this this declaration is not directly visible, because it is hidden by
> the loop parameter Mumble.  Thus, the reference to Mumble at "--(2)"
> is illegal.  That's just plain weird.

Interesting is that labels, types and objects share the same name space.
For labels it looks as if somebody planned to implement FORTRAN's:

ASSIGN 100 K
...
GOTO K

(I like that language! (:-))

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