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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Dispatch on the result still does not work?
Newsgroups: comp.lang.ada
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Organization: cbb software GmbH
Date: Sat, 11 Jul 2009 12:04:43 +0200
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Date: 2009-07-11T12:04:37+02:00
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Considering this one:

package P is
   type T is tagged null record;
   function Value return T;
      
   type S is new T with null record;
   function Value return S;
end P;
      
package body P is
   function Value return T is
   begin
      return (null record);
   end Value;
      
   function Value return S is
   begin
      return (T with null record);
   end Value;
end P;

use P;
   
   X : T'Class := S'(Value);
begin
   X := Value; -- Ambiguous?

I would expect it rather dispatching on the tag of X, i.e. selecting Value,
which returns S.

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