From: "Matthew Heaney" <mheaney@on2.com>
Subject: Re: Concatenation and Characters
Date: Thu, 24 Oct 2002 10:04:25 -0400
Date: 2002-10-24T10:04:25-04:00 [thread overview]
Message-ID: <urfvfarfj8p24f@corp.supernews.com> (raw)
In-Reply-To: mailman.1035439204.28367.comp.lang.ada@ada.eu.org
"Grein, Christoph" <christoph.grein@eurocopter.com> wrote in message
news:mailman.1035439204.28367.comp.lang.ada@ada.eu.org...
> > Many Ada83 programmers made the same mistake: assuming that there's an
> > automatic check when indexing an array. There was not, in Ada83. There
is
> > now, in Ada95.
>
> RM83 4.1.1(4)
> ... The exception CONSTRAINT_ERROR is raised if an index value does not
belong
> to the range of the corresponding index of the prefixing array ...
>
>
> A: array (Some_Range) of Something;
>
> I: Some_Range;
> J: Integer;
>
> A (I) - the range check can be omitted
And there you see the problem. If index I is initialized with garbage, then
program execution is errnoneous as soon as you use I to index into the
array. If you're lucky you'll get a core dump.
next prev parent reply other threads:[~2002-10-24 14:04 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-24 5:53 Concatenation and Characters Grein, Christoph
2002-10-24 14:04 ` Matthew Heaney [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-10-23 5:15 Grein, Christoph
2002-10-23 13:19 ` Matthew Heaney
2002-10-11 5:04 Grein, Christoph
2002-10-11 10:30 ` Preben Randhol
2002-10-10 14:50 Justin Birtwell
2002-10-10 14:55 ` Preben Randhol
2002-10-10 15:04 ` Justin Birtwell
2002-10-10 15:22 ` Preben Randhol
2002-10-10 15:30 ` Justin Birtwell
2002-10-10 16:05 ` Georg Bauhaus
2002-10-10 16:07 ` Preben Randhol
2002-10-10 17:45 ` Robert A Duff
2002-10-10 15:32 ` Justin Birtwell
2002-10-10 15:36 ` Preben Randhol
2002-10-10 16:44 ` Mark Biggar
2002-10-10 17:45 ` Stephen Leake
2002-10-10 21:53 ` Mark Biggar
2002-10-18 17:03 ` Programmer Dude
2002-10-18 18:13 ` Preben Randhol
2002-10-18 18:36 ` Wes Groleau
2002-10-21 15:16 ` Georg Bauhaus
2002-10-18 21:33 ` Mark Biggar
2002-10-20 2:01 ` Dmitry A.Kazakov
2002-10-21 14:13 ` Wes Groleau
2002-10-21 15:22 ` Dmitry A. Kazakov
2002-10-21 19:38 ` Georg Bauhaus
2002-10-22 22:15 ` Dmitry A.Kazakov
2002-10-22 12:05 ` Georg Bauhaus
2002-10-22 12:19 ` Lutz Donnerhacke
2002-10-22 14:43 ` Georg Bauhaus
2002-10-23 8:39 ` Dmitry A. Kazakov
2002-10-23 14:39 ` Georg Bauhaus
2002-10-24 8:18 ` Dmitry A. Kazakov
2002-10-21 16:50 ` Warren W. Gay VE3WWG
2002-10-21 15:20 ` Georg Bauhaus
2002-10-21 17:51 ` Programmer Dude
2002-10-21 18:48 ` Jim Rogers
2002-10-21 19:44 ` tmoran
2002-10-21 20:42 ` Programmer Dude
2002-10-22 1:42 ` Jeffrey Carter
2002-10-22 14:37 ` Robert A Duff
2002-10-22 18:51 ` Jeffrey Carter
2002-10-23 7:01 ` Pascal Obry
2002-10-22 14:45 ` Matthew Heaney
2002-10-22 18:47 ` Jeffrey Carter
2002-10-22 21:31 ` Robert A Duff
[not found] ` <3DB59D75.20609 <wccd6q29n3l.fsf@shell01.TheWorld.com>
2002-10-23 2:02 ` Jeffrey Carter
2002-10-23 13:16 ` Matthew Heaney
2002-10-23 19:11 ` Jeffrey Carter
2002-10-23 15:24 ` Robert A Duff
2002-10-23 19:24 ` Jeffrey Carter
2002-10-24 0:33 ` Robert A Duff
2002-10-22 3:46 ` Jim Rogers
2002-10-22 14:48 ` Robert A Duff
2002-10-22 15:02 ` Fraser Wilson
2002-10-22 15:38 ` David C. Hoos
2002-10-22 15:44 ` Fraser Wilson
2002-10-22 16:13 ` Robert A Duff
2002-10-23 8:58 ` Dmitry A. Kazakov
2002-10-23 9:08 ` Lutz Donnerhacke
2002-10-23 9:34 ` Dmitry A. Kazakov
2002-10-23 10:10 ` Lutz Donnerhacke
2002-10-23 17:15 ` Frank J. Lhota
2002-10-24 8:41 ` Dmitry A. Kazakov
2002-10-24 9:25 ` Fraser Wilson
2002-10-24 14:13 ` Matthew Heaney
[not found] ` <un <wcc7kgazc20.fsf@shell01.TheWorld.com>
2002-10-22 16:46 ` David C. Hoos
2002-10-22 8:51 ` Stuart Palin
2002-10-22 18:56 ` Programmer Dude
2002-10-21 19:42 ` Georg Bauhaus
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