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From: =?ISO-8859-1?Q?Hibou57_=28Yannick_Duch=EAne=29?=
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Newsgroups: comp.lang.ada
Subject: Re: not null
Date: Thu, 5 Mar 2009 17:07:27 -0800 (PST)
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Date: 2009-03-05T17:07:27-08:00
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On 4 mar, 17:16, Adam Beneschan <a...@irvine.com> wrote:
> Errors
> involving null references seem a lot more likely just to make programs
> die unexpectedly, than to allow arbitrary code execution or the like.
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0-- Ada=
m

Indeed, as long as a null reference is a $0000000.... memory offset,
most of modern processor allow exception to be raised in such
circumstance (at least which special access right on the memory block
starting at this offset, or else with special descriptors).

It is likely to be detected as soon as possible.