From: Robert A Duff <bobduff@world.std.com>
Subject: Re: Constraint checking of actuals passed to Attributes
Date: 2000/05/12
Date: 2000-05-12T00:00:00+00:00 [thread overview]
Message-ID: <wccsnvnsdpv.fsf@world.std.com> (raw)
In-Reply-To: 8fhnnj$ltd$1@nnrp1.deja.com
Ted Dennison <dennison@telepath.com> writes:
> But I still don't understand the logic behind making misuse of an
> overlay an "invalid" case rather than an "abonormal" (and thus
> erronious) case. Couldn't it cause the same -4 billion value to get
> placed into Y? The compiler would have no easy way to detect that the
> state has changed to "invalid". How do you enforce that the program
> "survives" this?
I'm not sure what you mean, here. Could you post a specific example?
(Maybe you already did, but I've long since forgotten about it. ;-))
Certainly you can cause abnormal objects, and erroneousness, by certain
misuses of address clauses and unchecked conversions of access values,
both of which can be used to make overlays.
- Bob
next prev parent reply other threads:[~2000-05-12 0:00 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-05-05 0:00 Constraint checking of actuals passed to Attributes Matt Brennan
2000-05-05 0:00 ` Keith Thompson
2000-05-08 0:00 ` Tucker Taft
2000-05-09 0:00 ` Robert Dewar
2000-05-09 0:00 ` Ted Dennison
2000-05-09 0:00 ` Robert Dewar
2000-05-09 0:00 ` Ted Dennison
2000-05-09 0:00 ` Robert Dewar
2000-05-09 0:00 ` Ted Dennison
2000-05-09 0:00 ` Robert A Duff
2000-05-09 0:00 ` Robert A Duff
2000-05-09 0:00 ` Robert Dewar
2000-05-09 0:00 ` Robert A Duff
2000-05-09 0:00 ` Keith Thompson
2000-05-10 0:00 ` Robert A Duff
2000-05-14 0:00 ` Simon Wright
2000-05-17 0:00 ` Robert A Duff
2000-05-12 0:00 ` Tucker Taft
2000-05-12 0:00 ` Ted Dennison
2000-05-12 0:00 ` Robert A Duff [this message]
2000-05-12 0:00 ` Ted Dennison
2000-05-16 0:00 ` Robert A Duff
2000-05-16 0:00 ` Ted Dennison
2000-05-17 0:00 ` Robert Dewar
2000-05-10 0:00 ` David C. Hoos, Sr.
2000-05-10 0:00 ` Robert Dewar
2000-05-10 0:00 ` Robert A Duff
2000-05-15 0:00 ` Bill Greene
2000-05-22 0:00 ` Kenneth Almquist
2000-05-10 0:00 ` Matt Brennan
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