From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: Arbitrary Sandbox
Date: Sat, 18 Feb 2012 17:58:22 -0500
Date: 2012-02-18T17:58:22-05:00 [thread overview]
Message-ID: <wccehtru4tt.fsf@shell01.TheWorld.com> (raw)
In-Reply-To: 9qakv8Fn6oU1@mid.individual.net
Niklas Holsti <niklas.holsti@tidorum.invalid> writes:
> Right. I did not mean to be critical of Burroughs; it is one example of
> dividing checks between SW and HW.
I've never used a Burroughs machine, but it seems to me that a design
that requires compilers to run in a privileged mode is just wrong.
A goal is to avoid having too much code in privileged mode, and
compilers are complicated beasts.
I talked to some folks who wrote a compiler (I don't remember which
language, might have been Ada) for one of those machines, and they said
it was a nightmare, because when there's a bug, instead of the compiler
crashing, or the compiler-generated program crashing, the entire system
would crash. This was a multi-user system, so one minor mistake by one
member of the compiler team disrupts the work of the whole team.
> Yes. The ideal is that all illegalities are detected at some level. But
> today, in Ada and other languages, we have cases of erroneous execution,
> undefined behaviour, and so on, that are not detected at all, and simply
> lead to wrong results or weird crashes. I wish that hardware could
> detect more of them.
I wish software would detect more of them. ;-)
- Bob
next prev parent reply other threads:[~2012-02-18 22:58 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-09 23:47 Arbitrary Sandbox Rob Shea
2012-02-10 0:10 ` Rob Shea
2012-02-10 2:01 ` Tez
2012-02-10 2:21 ` Rob Shea
2012-02-10 2:47 ` Tez
2012-02-10 4:11 ` Shark8
2012-02-13 2:23 ` BrianG
2012-02-10 4:17 ` tmoran
2012-02-10 4:41 ` Rob Shea
2012-02-10 6:15 ` Jeffrey Carter
2012-02-10 6:18 ` Rob Shea
2012-02-10 19:39 ` Jeffrey Carter
2012-02-10 6:19 ` Thomas Løcke
2012-02-10 9:32 ` Rob Shea
2012-02-10 10:09 ` Thomas Løcke
2012-02-10 11:39 ` Ludovic Brenta
2012-02-10 12:05 ` Brian Drummond
2012-02-11 10:32 ` Maciej Sobczak
2012-02-11 11:39 ` Dmitry A. Kazakov
2012-02-11 21:15 ` Maciej Sobczak
2012-02-11 21:38 ` Dmitry A. Kazakov
2012-02-11 23:05 ` Rob Shea
2012-02-13 2:10 ` Tez
2012-02-13 9:08 ` Yannick Duchêne (Hibou57)
2012-02-13 16:28 ` Pascal Obry
2012-02-10 9:47 ` Georg Bauhaus
2012-02-10 11:45 ` Erich
2012-02-10 11:48 ` Ludovic Brenta
2012-02-11 6:11 ` Rob Shea
2012-02-12 2:10 ` Randy Brukardt
2012-02-12 8:40 ` björn lundin
2012-02-14 0:26 ` Shark8
2012-02-15 21:07 ` Randy Brukardt
2012-02-15 22:10 ` Yannick Duchêne (Hibou57)
2012-02-18 4:47 ` Shark8
2012-02-18 8:26 ` Dmitry A. Kazakov
2012-02-18 10:45 ` Yannick Duchêne (Hibou57)
2012-02-18 11:31 ` Dmitry A. Kazakov
2012-02-18 11:58 ` Niklas Holsti
2012-02-18 12:57 ` Yannick Duchêne (Hibou57)
2012-02-18 18:55 ` Robert A Duff
2012-02-18 19:24 ` Niklas Holsti
2012-02-18 20:06 ` tmoran
2012-02-18 21:53 ` Niklas Holsti
2012-02-18 22:58 ` Robert A Duff [this message]
2012-02-19 0:47 ` tmoran
2012-02-20 23:39 ` Robert A Duff
2012-02-21 3:29 ` tmoran
2012-02-21 17:17 ` tmoran
2012-02-21 21:03 ` Robert A Duff
2012-03-06 0:52 ` Randy Brukardt
2012-02-20 22:52 ` Adam Beneschan
2012-02-18 23:03 ` BrianG
2012-02-19 8:45 ` Dmitry A. Kazakov
2012-02-20 23:27 ` Robert A Duff
2012-02-21 8:36 ` Dmitry A. Kazakov
2012-02-21 9:59 ` Simon Wright
2012-02-21 10:59 ` Dmitry A. Kazakov
2012-02-21 17:25 ` Robert A Duff
2012-02-21 18:53 ` Dmitry A. Kazakov
2012-02-21 21:19 ` Robert A Duff
2012-02-22 8:24 ` Dmitry A. Kazakov
2012-02-21 21:25 ` Yannick Duchêne (Hibou57)
2012-02-22 8:26 ` Dmitry A. Kazakov
2012-02-21 8:47 ` Georg Bauhaus
2012-02-21 16:58 ` Robert A Duff
2012-03-06 1:06 ` Randy Brukardt
2012-03-07 5:43 ` Yannick Duchêne (Hibou57)
2012-03-07 13:05 ` Robert A Duff
2012-03-07 19:32 ` tmoran
2012-03-07 20:24 ` Dmitry A. Kazakov
2012-03-08 0:50 ` Robert A Duff
2012-03-08 1:50 ` tmoran
2012-03-08 11:01 ` Brian Drummond
2012-03-08 1:01 ` Shark8
2012-03-08 1:33 ` Randy Brukardt
2012-02-20 20:52 ` Tero Koskinen
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