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From: =?ISO-8859-1?Q?Hibou57_=28Yannick_Duch=EAne=29?=
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Newsgroups: comp.lang.ada
Subject: Re: Initialization and Finalization of limited object "returned" by a
	function
Date: Thu, 11 Feb 2010 18:37:52 -0800 (PST)
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Date: 2010-02-11T18:37:52-08:00
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procedure F is
   -- Variation from E : the derived
   -- limited type is now made a protected
   -- type (which is still limited, implicitly).
   -- Observations : Arghh! Finalzation occurs
   -- right after Initialization.
   -- Conclusion : so fat, every thing was
   -- working as expected, but breaks as
   -- soon as the derived limited type
   -- is made a protected type.
   -- Should there be a different handling
   -- of Initialization and Finalization when
   -- the type is a protected type instead of
   -- simply a tagged limited type ? To be
   -- continued ...

   package P is
      type Limited_Type is limited interface;
      subtype Limited_Class is Limited_Type'Class;
      function New_Limited return Limited_Class;
   end P;

   package body P is
      protected type Derived_Limited_Type is
         new Limited_Type with end;

      protected body Derived_Limited_Type is end;

      function New_Derived return Derived_Limited_Type is
      begin
         return R : Derived_Limited_Type do
            null;
         end return;
      end;

      function New_Limited return Limited_Class is
      begin
         return R: Limited_Class := New_Derived do
            null;
         end return;
      end;
   end P;

   Entity : P.Limited_Class := P.New_Limited;

begin
   null;
end F;