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From: Dale Stanbrough <dale@goanna.cs.rmit.edu.au>
Subject: Re: Uninitialized "out" parameters
Date: 1996/07/19
Date: 1996-07-19T00:00:00+00:00	[thread overview]
Message-ID: <4smmhe$9cs@goanna.cs.rmit.edu.au> (raw)
In-Reply-To: 4smh9i$gp5@krusty.irvine.com


Adam Beneschan writes:
"Well, you can't read an "out" parameter at all, so it's illegal to use
 "op" in the right-hand side of your assignment.  So the compiler
 should give you an error.  Also, in Ada83, you'll get an error because
 I needs to be declared before the code for SubP appears.
 
 If you change op to an "in out" parameter, you'll be reading an
 uninitialized variable, but typically neither the compiler nor the
 runtime will complain."
 
 
Ada95 does allow you to read out parameters. The code written simply
uses an uninitialized variable, and I would imagine it would be declared
erroneous by the LRM.

Dale




  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 ` 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 Dewar
1996-07-24  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
1996-07-25  0:00                 ` Robert A Duff
1996-07-23  0:00             ` Robert A Duff
1996-07-24  0:00               ` Richard A. O'Keefe
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
1996-07-24  0:00                 ` Theodore E. Dennison
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           ` Fergus Henderson
1996-07-23  0:00             ` Robert A Duff
1996-07-24  0:00               ` Fergus Henderson
1996-07-24  0:00               ` Fergus Henderson
1996-07-18  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   ` Samuel Tardieu
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
1996-07-19  0:00   ` Dale Stanbrough [this message]
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                 ` Robert A Duff
1996-07-25  0:00                   ` Richard A. O'Keefe
1996-07-24  0:00                 ` Fergus Henderson
1996-07-19  0:00 ` Michel Gauthier
1996-07-21  0:00   ` Robert A Duff
1996-07-19  0:00 ` Peter Amey
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 ` Uninitialized "out" parameters John Herro
1996-07-23  0:00   ` Robert Dewar
1996-07-24  0:00     ` Peter Hermann
1996-07-23  0:00   ` Robert A Duff
1996-07-24  0:00     ` Uninitialized variables, Java example Arra Avakian
1996-07-25  0:00       ` Robert A Duff
1996-07-25  0:00       ` Richard A. O'Keefe
1996-07-25  0:00         ` Robert A Duff
1996-07-26  0:00   ` Uninitialized "out" parameters Stephen J Bevan
1996-07-26  0:00     ` Robert A Duff
1996-07-23  0:00 ` Is 'out' different from 'in out' (Was: Uninitialized "out" parameters) Michel Gauthier
1996-07-23  0:00   ` Robert Dewar
1996-07-24  0:00   ` Pascal Obry
1996-07-25  0:00   ` Tucker Taft
1996-07-24  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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