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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: A simple question about the "new" allocator
Date: Tue, 12 Aug 2014 09:35:11 +0200
Organization: cbb software GmbH
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Date: 2014-08-12T09:35:11+02:00
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On Mon, 11 Aug 2014 23:54:50 -0700 (PDT), NiGHTS wrote:

> With all default configurations using a typical Ada compiler, will the following code run indefinitely without fail or will it eventually crash?
> 
> procedure main is 
> 
>     Test : access Positive;
> 
> begin
> 
>     loop
>         Test := new Positive;
>     end loop;
> 
> end main;
> 
> If this does crash, what would be another way to write this program so
> that it does not crash?
>
> I would prefer not to use Ada.Unchecked_Deallocation.

Write a custom memory pool that does not allocate anything. Make Test a
pointer to that pool.

P.S. It might sound silly, but such pools are actually useful. When the
object is already allocated and you want to initialize it and get a pointer
to, one way to do that is using a fake allocator.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de