From: Hyman Rosen <hymie@prolifics.com>
Subject: Re: Ada and Java. different behaviour. casting long to int problem.
Date: 1999/06/18
Date: 1999-06-18T16:09:06+00:00 [thread overview]
Message-ID: <t71zf9cwuy.fsf@calumny.jyacc.com> (raw)
In-Reply-To: 7kbujm$1kb@drn.newsguy.com
bob@nospam.com writes:
> This logic does not make sense at all.
>
> When an exception happen, you catch it, and then you can simply
> ignore it if that is really what you want to do depending on the
> exception, or you print some error message and also ignore it,
> or you can throw it again. The point is, raising an exception and
> handling it, are 2 different issues. So your point about the program
> abruptly aborting do not make sense.
But no one generally expects arithmetic overflow exceptions, so no one
writes exception handlers for them. In the Ariane 5 case, the very line
that caused the exception was carefully examined by the designers, who
concluded that there could be no overflow, and that therefore no check
was needed.
As a result, when an overflow exception happens, there is no local
handler to process it. The exception propogates outward, destroying
subroutines in its path, until some outermost catch-all handler
finally triggers, or the program aborts. The result, to the user of
the code, can be much worse than continuing to process with bad data.
next prev parent reply other threads:[~1999-06-18 0:00 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-06-12 0:00 Ada and Java. different behaviour. casting long to int problem nabbasi
1999-06-12 0:00 ` Tucker Taft
1999-06-12 0:00 ` PPAATT
1999-06-12 0:00 ` Keith Thompson
1999-06-12 0:00 ` kirck
1999-06-13 0:00 ` Robert Dewar
1999-06-12 0:00 ` Fred
1999-06-14 0:00 ` Mark Hood
1999-06-15 0:00 ` mike
1999-06-15 0:00 ` Samuel Mize
1999-06-15 0:00 ` jerry
1999-06-16 0:00 ` Richard D Riehle
1999-06-16 0:00 ` jerry
1999-06-15 0:00 ` Marin David Condic
1999-06-15 0:00 ` Mike Silva
1999-06-15 0:00 ` rich
1999-06-15 0:00 ` tmoran
1999-06-15 0:00 ` David Botton
1999-06-16 0:00 ` Samuel Mize
1999-06-16 0:00 ` Richard D Riehle
1999-06-15 0:00 ` Marin David Condic
1999-06-15 0:00 ` D'Arcy Smith
1999-06-15 0:00 ` Keith Thompson
1999-06-16 0:00 ` bill
1999-06-16 0:00 ` George W. Bayles
1999-06-16 0:00 ` Fraser Wilson
1999-06-17 0:00 ` Chris Dollin
1999-06-17 0:00 ` Aidan Skinner
1999-06-17 0:00 ` David Botton
1999-06-18 0:00 ` Dale Stanbrough
1999-06-18 0:00 ` David Botton
1999-06-18 0:00 ` Pascal Obry
1999-06-18 0:00 ` Matthew Heaney
1999-07-20 0:00 ` Geoff Bull
1999-06-16 0:00 ` D'Arcy Smith
1999-06-16 0:00 ` Mike Silva
1999-06-16 0:00 ` D'Arcy Smith
1999-06-16 0:00 ` kirk
1999-06-16 0:00 ` D'Arcy Smith
1999-06-17 0:00 ` Markus Kuhn
1999-06-17 0:00 ` john
1999-06-17 0:00 ` Ed Falis
1999-06-18 0:00 ` Aidan Skinner
1999-06-17 0:00 ` D'Arcy Smith
1999-06-16 0:00 ` Hyman Rosen
1999-06-17 0:00 ` Robert I. Eachus
1999-06-17 0:00 ` Hyman Rosen
1999-06-17 0:00 ` Marin David Condic
1999-06-17 0:00 ` bob
1999-06-18 0:00 ` Hyman Rosen [this message]
1999-06-18 0:00 ` mike
1999-06-18 0:00 ` Hyman Rosen
1999-06-19 0:00 ` Dale Stanbrough
1999-06-21 0:00 ` Marin David Condic
1999-06-19 0:00 ` Samuel Mize
1999-06-21 0:00 ` Marin David Condic
1999-06-21 0:00 ` Mike Silva
1999-06-17 0:00 ` Jean-Pierre Rosen
1999-06-17 0:00 ` Marin David Condic
1999-06-17 0:00 ` Samuel Mize
1999-06-17 0:00 ` Marin David Condic
1999-06-22 0:00 ` Hyman Rosen
1999-06-22 0:00 ` Keith Thompson
1999-06-23 0:00 ` Marin David Condic
1999-06-24 0:00 ` Robert A Duff
1999-06-24 0:00 ` Marin David Condic
1999-06-23 0:00 ` Marin David Condic
1999-06-18 0:00 ` Aidan Skinner
1999-06-17 0:00 ` Markus Kuhn
1999-06-20 0:00 ` Sera Hirasuna
1999-06-19 0:00 ` Kio
1999-06-20 0:00 ` Vladimir Olensky
1999-06-21 0:00 ` Samuel T. Harris
1999-06-22 0:00 ` Robert I. Eachus
1999-06-23 0:00 ` Richard D Riehle
1999-06-23 0:00 ` Aidan Skinner
1999-06-22 0:00 ` Richard D Riehle
1999-06-21 0:00 ` Hyman Rosen
1999-06-17 0:00 ` Jean-Pierre Rosen
1999-06-16 0:00 ` Marin David Condic
1999-06-16 0:00 ` George W. Bayles
1999-06-16 0:00 ` Tucker Taft
1999-06-17 0:00 ` George W. Bayles
1999-06-17 0:00 ` Tucker Taft
1999-06-17 0:00 ` bob
1999-06-16 0:00 ` D'Arcy Smith
1999-06-16 0:00 ` D'Arcy Smith
1999-06-17 0:00 ` Larry Kilgallen
1999-06-22 0:00 ` Robert Dewar
1999-06-23 0:00 ` Marin David Condic
1999-06-23 0:00 ` Vladimir Olensky
1999-06-23 0:00 ` Marin David Condic
1999-06-23 0:00 ` Roedy Green
1999-06-23 0:00 ` Marin David Condic
1999-06-23 0:00 ` Keith Thompson
1999-06-24 0:00 ` Mike Silva
1999-06-24 0:00 ` Marin David Condic
1999-06-15 0:00 ` Samuel Mize
1999-06-16 0:00 ` Mark Hood
1999-06-17 0:00 ` Jean-Pierre Rosen
1999-06-17 0:00 ` Robert I. Eachus
1999-06-17 0:00 ` Marin David Condic
1999-06-15 0:00 ` D'Arcy Smith
1999-06-16 0:00 ` George W. Bayles
1999-06-16 0:00 ` D'Arcy Smith
1999-06-17 0:00 ` Aidan Skinner
1999-06-17 0:00 ` Matthew Heaney
1999-06-17 0:00 ` Markus Kuhn
1999-06-17 0:00 ` David Botton
1999-06-13 0:00 ` Robert Dewar
1999-06-14 0:00 ` tmoran
1999-06-30 0:00 ` John Merryweather Cooper
1999-07-01 0:00 ` Chad R. Meiners
1999-07-02 0:00 ` Robert Dewar
1999-07-02 0:00 ` John Merryweather Cooper
1999-07-03 0:00 ` Robert Dewar
1999-06-12 0:00 ` nabbasi
1999-06-12 0:00 ` jerry
1999-06-12 0:00 ` Robert Dewar
1999-06-14 0:00 ` Marin David Condic
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox