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-- FC51C00.A
--
--                             Grant of Unlimited Rights
--
--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 
--     unlimited rights in the software and documentation contained herein.
--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 
--     this public release, the Government intends to confer upon all 
--     recipients unlimited rights  equal to those held by the Government.  
--     These rights include rights to use, duplicate, release or disclose the 
--     released technical data and computer software in whole or in part, in 
--     any manner and for any purpose whatsoever, and to have or permit others 
--     to do so.
--
--                                    DISCLAIMER
--
--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 
--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 
--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
--     PARTICULAR PURPOSE OF SAID MATERIAL.
--*
--
-- FOUNDATION DESCRIPTION:
--      This foundation declares a hierarchy of tagged types, which includes
--      both abstract and non-abstract types, and which have both abstract
--      and non-abstract primitive subprograms.
--
-- CHANGE HISTORY:
--      06 Dec 94   SAIC    ACVC 2.0
--      03 Nov 95   SAIC    ACVC 2.0.1 fixes: Deleted primitive operation Proc
--                          of Concrete_Root.
--      11 Aug 96   SAIC    ACVC 2.1: Changed procedure bodies to update
--                          actual parameters.
--
--!

package FC51C00 is

--
-- Non-abstract ultimate ancestor type:
--

   type Concrete_Root is tagged null record;

   function Func (P: Concrete_Root) return Concrete_Root;    -- Abstract when
                                                             -- inherited.


--
-- Abstract descendant of non-abstract ultimate ancestor:
--

   type Abstract_Child is abstract new Concrete_Root with null record;

   -- Inherits:
   -- function Func (P: Abstract_Child) return Abstract_Child is abstract;

   procedure Proc (P: in out Abstract_Child) is abstract;    -- Abstract.
   procedure New_Proc (P : out Abstract_Child) is abstract;  -- Abstract.

   

--
-- Non-abstract descendant of abstract descendant:
--

   type Concrete_GrandChild is new Abstract_Child with null record;

   function Func (P: Concrete_GrandChild) return Concrete_GrandChild;

   procedure Proc (P: in out Concrete_GrandChild);
   procedure New_Proc (P : out Concrete_GrandChild);

   
end FC51C00;


     --===================================================================--


package body FC51C00 is

   Value : Concrete_GrandChild;


   function Func (P: Concrete_Root) return Concrete_Root is
   begin
      return P;
   end Func;


   function Func (P: Concrete_GrandChild) return Concrete_GrandChild is
   begin
      return P;
   end Func;


   procedure Proc (P: in out Concrete_GrandChild) is
   begin
      P := Value;
   end Proc;


   procedure New_Proc (P : out Concrete_GrandChild) is
   begin
      P := Value;
   end New_Proc;

end FC51C00;