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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Discriminant ans tagged type ?!
Date: Tue, 18 Mar 2008 14:40:29 -0400
Organization: The World Public Access UNIX, Brookline, MA
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Date: 2008-03-18T14:40:29-04:00
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Tony <truand.tony@gmail.com> writes:

> I just do not understand why the following code compiles with the Aonix
> compiler and not with the Gnat GPL 2007?
>
>     package A_Pkg is
>         type A (L : Natural) is tagged null record;
>     end A_Pkg;
>
>     package A_Pkg.B_Pkg is
>         type B is new A with record
>             T : String(1..L);
>         end record;
>     end A_Pkg.B_Pkg;
>
>     with A_Pkg.B_Pkg;
>     procedure Strange is
>     begin
>         null;
>     end Strange;
>
>    => RM95 3.7 (18) ??

There's 3.9.1(8), which is a NOTE.

If you want to do the above, you can say:

    type B (L : Natural) is new A(L) with ...

- Bob