From: Adam Beneschan <adam@irvine.com>
Subject: Re: not null
Date: Wed, 4 Mar 2009 08:16:25 -0800 (PST)
Date: 2009-03-04T08:16:25-08:00 [thread overview]
Message-ID: <faf30fd2-2aa8-43e6-8159-9f1b75dcd339@n33g2000pri.googlegroups.com> (raw)
In-Reply-To: 49ae9cc4$0$31877$9b4e6d93@newsspool3.arcor-online.net
On Mar 4, 7:22 am, Georg Bauhaus <rm.dash-bauh...@futureapps.de>
wrote:
> The overall impact of refs not "attached" (to use
> an Eiffel term; not null is spreading through languages
> it seems; C++, too?) is a financial disaster, with
> possibly one exception: there is money in a business
> selling software components whose purpose is to guard
> the holes kept open by operating system sellers.
>
> (Antivirus etc.)
Is there any basis for this last comment? I've seen lots of reports
of vulnerabilities caused by buffer overflows combined with lack of
range checking, and by double-deallocation errors (deallocating the
same chunk of memory twice and making hash of your heap structures),
but I don't recall seeing any caused by null references. Errors
involving null references seem a lot more likely just to make programs
die unexpectedly, than to allow arbitrary code execution or the like.
-- Adam
next prev parent reply other threads:[~2009-03-04 16:16 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-04 14:44 not null Georg Bauhaus
2009-03-04 14:56 ` Hyman Rosen
2009-03-04 15:22 ` Georg Bauhaus
2009-03-04 16:16 ` Adam Beneschan [this message]
2009-03-05 14:24 ` Georg Bauhaus
2009-03-05 16:07 ` Adam Beneschan
2009-03-06 1:07 ` Hibou57 (Yannick Duchêne)
2009-03-04 16:09 ` Adam Beneschan
2009-03-04 20:38 ` Dmitry A. Kazakov
2009-03-05 1:54 ` Adam Beneschan
2009-03-05 8:42 ` Dmitry A. Kazakov
2009-03-05 1:32 ` Brian Drummond
2009-03-05 1:47 ` Adam Beneschan
2009-03-05 11:32 ` Brian Drummond
2009-03-05 15:06 ` Dmitry A. Kazakov
2009-03-05 13:57 ` Georg Bauhaus
2009-03-05 19:53 ` Jack Mitchell
2009-03-05 8:49 ` Jacob Sparre Andersen
2009-03-05 16:10 ` Adam Beneschan
2009-03-05 17:20 ` Jacob Sparre Andersen
2009-03-06 1:04 ` Hibou57 (Yannick Duchêne)
2009-03-06 12:01 ` Harald Korneliussen
2009-03-06 12:43 ` Jacob Sparre Andersen
2009-03-06 13:05 ` Harald Korneliussen
2009-03-06 15:21 ` Dmitry A. Kazakov
2009-03-06 16:59 ` Harald Korneliussen
2009-03-06 17:48 ` Dmitry A. Kazakov
2009-03-06 20:05 ` Georg Bauhaus
2009-03-06 21:31 ` Dmitry A. Kazakov
2009-03-04 16:19 ` Robert A Duff
2009-03-04 20:39 ` Colin Paul Gloster
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