From: Samuel Tardieu <sam@inf.enst.fr>
To: ica2ph@alpha1.csv.ica.uni-stuttgart.de (Peter Hermann),
Subject: Re: Uninitialized "out" parameters
Date: 1996/07/19
Date: 1996-07-19T00:00:00+00:00 [thread overview]
Message-ID: <qw6pw5s1t82.fsf@gargantua.enst.fr> (raw)
In-Reply-To: 4smh9i$gp5@krusty.irvine.com
Pascal> In Ada you can read out parameter, and this program is then
Pascal> not valid. It's behavior is unknown.
Peter> even more frightening Tuck?
I don't see what's frightening here. As I understand it, this point
has been introduced to allow things like this:
procedure Fact (N : in Positive; R : out Positive) is
begin
R := 1;
for I in 2 .. N loop
R := R * I; -- Note that the R out parameter gets read here
end loop;
end Fact;
If you forget to initialize R, then it's your fault and the compiler
may warn you as it may do for other uninitialized variables...
Sam
--
"La cervelle des petits enfants, ca doit avoir comme un petit gout de noisette"
Charles Baudelaire
next prev parent reply other threads:[~1996-07-19 0:00 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
1996-07-18 0:00 Uninitialized "out" parameters Paul Whittington
1996-07-18 0:00 ` Adam Beneschan
1996-07-18 0:00 ` Robert Dewar
1996-07-19 0:00 ` Pascal Obry
1996-07-19 0:00 ` Peter Hermann
1996-07-19 0:00 ` Dale Stanbrough
1996-07-19 0:00 ` Adam Beneschan
1996-07-19 0:00 ` James A. Squire
1996-07-19 0:00 ` Adam Beneschan
1996-07-20 0:00 ` Michael Feldman
1996-07-21 0:00 ` Fergus Henderson
1996-07-21 0:00 ` Michael Feldman
1996-07-21 0:00 ` Robert Dewar
1996-07-22 0:00 ` Fergus Henderson
1996-07-23 0:00 ` Michael Feldman
1996-07-23 0:00 ` Robert Dewar
1996-07-25 0:00 ` Fergus Henderson
1996-07-24 0:00 ` Fergus Henderson
1996-07-24 0:00 ` Robert A Duff
1996-07-25 0:00 ` Richard A. O'Keefe
1996-07-19 0:00 ` Samuel Tardieu [this message]
1996-07-19 0:00 ` John Herro
1996-07-19 0:00 ` Tucker Taft
1996-07-23 0:00 ` Peter Hermann
1996-07-23 0:00 ` Robert A Duff
1996-07-18 0:00 ` Robert Dewar
1996-07-19 0:00 ` Peter Amey
1996-07-20 0:00 ` Fergus Henderson
1996-07-20 0:00 ` Robert Dewar
1996-07-21 0:00 ` Fergus Henderson
1996-07-21 0:00 ` Robert Dewar
1996-07-23 0:00 ` Richard A. O'Keefe
1996-07-23 0:00 ` Robert A Duff
1996-07-24 0:00 ` Richard A. O'Keefe
1996-07-24 0:00 ` Theodore E. Dennison
1996-07-24 0:00 ` Robert A Duff
1996-07-25 0:00 ` Richard A. O'Keefe
1996-07-25 0:00 ` Robert A Duff
1996-07-25 0:00 ` Frank Manning
1996-07-25 0:00 ` Richard A. O'Keefe
1996-07-26 0:00 ` Frank Manning
1996-07-23 0:00 ` Robert Dewar
1996-07-24 0:00 ` Fergus Henderson
1996-07-24 0:00 ` Robert A Duff
1996-07-24 0:00 ` Fergus Henderson
1996-07-25 0:00 ` Richard A. O'Keefe
1996-07-25 0:00 ` Robert A Duff
1996-07-23 0:00 ` Fergus Henderson
1996-07-23 0:00 ` Robert A Duff
1996-07-24 0:00 ` Fergus Henderson
1996-07-24 0:00 ` Fergus Henderson
1996-07-19 0:00 ` Peter Amey
1996-07-19 0:00 ` Michel Gauthier
1996-07-21 0:00 ` Robert A Duff
1996-07-21 0:00 ` Robert A Duff
1996-07-22 0:00 ` Is 'out' different from 'in out' (Was: Uninitialized "out" parameters) Michel Gauthier
1996-07-22 0:00 ` Robert A Duff
1996-07-22 0:00 ` Robert Dewar
1996-07-22 0:00 ` Tucker Taft
1996-07-23 0:00 ` Michel Gauthier
1996-07-23 0:00 ` Robert Dewar
1996-07-24 0:00 ` Pascal Obry
1996-07-25 0:00 ` Tucker Taft
1996-07-23 0:00 ` Uninitialized "out" parameters John Herro
1996-07-23 0:00 ` Robert A Duff
1996-07-24 0:00 ` Uninitialized variables, Java example Arra Avakian
1996-07-25 0:00 ` Richard A. O'Keefe
1996-07-25 0:00 ` Robert A Duff
1996-07-25 0:00 ` Robert A Duff
1996-07-23 0:00 ` Uninitialized "out" parameters Robert Dewar
1996-07-24 0:00 ` Peter Hermann
1996-07-26 0:00 ` Stephen J Bevan
1996-07-26 0:00 ` Robert A Duff
1996-07-24 0:00 ` Uninitialized variables, Java example Felaco
-- strict thread matches above, loose matches on Subject: below --
1996-07-29 0:00 Uninitialized out parameters W. Wesley Groleau (Wes)
2016-04-05 12:02 ahlan
2016-04-05 13:17 ` rieachus
2016-04-05 14:07 ` ahlan
2016-04-06 9:45 ` Mark Lorenzen
2016-04-06 21:01 ` Jeffrey R. Carter
2016-04-07 7:10 ` ahlan
2016-04-05 16:19 ` G.B.
2016-04-06 8:19 ` ahlan
2016-04-06 10:17 ` G.B.
2016-04-06 11:44 ` Dennis Lee Bieber
2016-04-06 20:41 ` Niklas Holsti
2016-04-06 20:54 ` Randy Brukardt
2016-04-06 20:47 ` Randy Brukardt
2016-04-06 21:01 ` Randy Brukardt
2016-04-06 21:22 ` Dmitry A. Kazakov
2016-04-07 7:27 ` Randy Brukardt
2016-04-06 11:37 ` AdaMagica
2016-04-06 13:44 ` ahlan
2016-04-06 14:09 ` Mark Lorenzen
2016-04-06 14:10 ` G.B.
2016-04-06 20:53 ` Stefan.Lucks
2016-04-06 21:03 ` Randy Brukardt
2016-04-06 21:12 ` Niklas Holsti
2016-04-06 21:30 ` Randy Brukardt
2016-04-07 9:56 ` Stefan.Lucks
2016-04-07 16:08 ` AdaMagica
2016-04-07 23:02 ` Randy Brukardt
2016-04-08 7:32 ` Dmitry A. Kazakov
2016-04-07 7:52 ` Georg Bauhaus
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