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From: Martin Krischik <krischik@users.sourceforge.net>
Newsgroups: comp.lang.ada
Subject: Re: Memory leak - What the ...?
Date: Mon, 11 Oct 2004 15:02:19 +0200
Organization: AdaCL
Message-ID: <1141547.LoYYWXntGt@linux1.krischik.com>
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Date: 2004-10-11T15:02:19+02:00
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Marius Amado Alves wrote:

> Alex R. Mosteo wrote:
>> Marius Amado Alves <amado.alves@netcabo.pt> wrote in message
>> news:<mailman.267.1097445952.390.comp.lang.ada@ada-france.org>...
>> 
>>>>      if This.Data /= null then
>>>>         This.Data := new Stream_Element_Array'(This.Data.all);
>>>>      end if;
>>>
>>>To my pointerless eyes this looks very leaky.
>> 
>> Could you elaborate? I'm trying to do a deep copy.
> 
> The "new" expression yields a new pointer value, the assignment smashes
> the old one with this new value, so the old pointer is lost, and unless
> some magic was put it place the old pointee becomes a zombie.

Well there is allways the shallow part of the deep copy. The original
pointer is still part of the original record. When the original record is
destroyed a deep delete (in Finalise) should deal with the original
pointer.

With Regards

Martin

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