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From: porton@ex-code.com (Victor Porton)
Subject: Pitfall: freeing access discriminants
Newsgroups: comp.lang.ada
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Message-ID: <E18jGE0-0003dI-00@porton.narod.ru>
Date: Thu, 13 Feb 2003 15:04:12 +0500
Organization: Extreme Code Software (http://ex-code.com)
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Xref: archiver1.google.com comp.lang.ada:34044
Date: 2003-02-13T10:05:13+00:00
List-Id: <comp.lang.ada>

type Integer_Access is access Integer;

type T(D: access Integer) is Ada.Limited_Controlled with null record;

procedure Finalize(Object: in out T) is
  -- Error: cannot convert access discriminant to non-local access type
  D: Integer_Access := Integer_Access(Object.D);
begin
  Free(D);
end;

What to do? It seems being a serious deficiency in Ada or there are a 
workaround?