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From: AdaMagica <christ-usch.grein@t-online.de>
Newsgroups: comp.lang.ada
Subject: Reference counting access type
Date: Thu, 16 Feb 2012 09:03:36 -0800 (PST)
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Date: 2012-02-16T09:03:36-08:00
List-Id: <comp.lang.ada>

For a safe reference counting access type (any user deallocation
prohibited, so the safety cannot be compromized - there are never
dangling pointers) see
http://www.christ-usch-grein.homepage.t-online.de/Ada/Smart_Pointers.html

This follows strictly the example at AdaCore gem #107
http://www.adacore.com/2011/06/06/gem-107-preventing-deallocation-for-reference-counted-types/

There is a preview to the Ada 2012 implicit dereference aspect
included (GNAT GPL 2011 does not yet fully support this).