From: Jacob Sparre Andersen <jacob@jacob-sparre.dk>
Subject: Re: Community Input for the Maintenance and Revision of the Ada Programming Language
Date: Wed, 06 Sep 2017 17:57:32 +0200
Date: 2017-09-06T17:57:32+02:00 [thread overview]
Message-ID: <87a827akgj.fsf@jacob-sparre.dk> (raw)
In-Reply-To: e9e2556d-9b23-4e7f-9058-776dd506f73c@googlegroups.com
Johan Söderlind Åström wrote:
> I do not think that accessing a element from a array is a complicated
> thing and starting from a zero indexed array is even simpler, then why
> would a compiler not guarantee such a simple thing to work?
One possibility is that constrained and unconstrained subtypes of the
same subtype may have slightly different memory layouts.
Or maybe the bounds of the array are stored at the beginning of the
memory structure (where else can we put them?), and your overlaying
changes the subtype of the (possibly constant) array passed to it, by
overwriting the bounds.
Randy has written a part of at least one Ada compiler, so he can
probably come up with some more concrete examples.
Greetings,
Jacob
--
"Good enough for physics" -- Ridcully
next prev parent reply other threads:[~2017-09-06 15:57 UTC|newest]
Thread overview: 228+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-03 5:45 Community Input for the Maintenance and Revision of the Ada Programming Language Randy Brukardt
2017-08-03 12:06 ` Lucretia
2017-08-03 12:52 ` Lucretia
2017-08-09 21:08 ` Luke A. Guest
2017-08-09 21:12 ` Luke A. Guest
2017-08-10 14:43 ` Lucretia
2017-08-10 15:14 ` Dmitry A. Kazakov
2017-08-11 1:27 ` Randy Brukardt
2017-08-11 1:24 ` Randy Brukardt
2017-08-11 5:54 ` G.B.
2017-08-10 5:41 ` G.B.
2017-08-10 14:41 ` Lucretia
2017-08-10 15:25 ` J-P. Rosen
2017-08-10 15:42 ` Luke A. Guest
2017-08-10 15:44 ` Dmitry A. Kazakov
2017-08-11 0:56 ` Randy Brukardt
2017-08-11 1:10 ` Randy Brukardt
2017-08-11 22:43 ` Shark8
2017-08-12 2:40 ` Luke A. Guest
2017-08-11 14:42 ` Justin Sq
2017-08-11 14:48 ` jsquirek
2017-08-11 17:10 ` Luke A. Guest
2017-08-11 17:24 ` Justin Sq
2017-08-11 20:09 ` Dmitry A. Kazakov
2017-08-11 21:13 ` Randy Brukardt
2017-08-18 21:06 ` Robert Eachus
2017-08-31 0:49 ` Randy Brukardt
2017-08-31 7:36 ` Jacob Sparre Andersen
2017-08-31 9:52 ` Dmitry A. Kazakov
2017-08-31 12:49 ` Jacob Sparre Andersen
2017-08-31 13:16 ` Dmitry A. Kazakov
2017-08-31 14:09 ` Jacob Sparre Andersen
2017-08-31 14:41 ` Dmitry A. Kazakov
2017-08-31 15:45 ` Simon Wright
2017-08-31 16:08 ` Dmitry A. Kazakov
2017-08-31 18:51 ` Georg Bauhaus
2017-08-31 23:54 ` Randy Brukardt
2017-09-01 3:51 ` Justin Sq
2017-09-01 7:24 ` Dmitry A. Kazakov
2017-09-01 12:23 ` jsquirek
2017-09-03 1:17 ` Randy Brukardt
2017-08-18 20:33 ` Robert Eachus
2017-08-19 1:24 ` Shark8
2017-08-19 8:55 ` Dmitry A. Kazakov
2017-08-19 16:38 ` Shark8
2017-08-19 17:09 ` Dmitry A. Kazakov
2017-08-22 6:02 ` Robert Eachus
2017-08-22 7:34 ` Dmitry A. Kazakov
2017-08-26 4:41 ` Robert Eachus
2017-08-26 6:29 ` Dmitry A. Kazakov
2017-08-26 7:16 ` Jacob Sparre Andersen
2017-08-26 7:48 ` Dmitry A. Kazakov
2017-08-27 12:03 ` Robert Eachus
2017-08-27 12:35 ` Dmitry A. Kazakov
2017-08-27 14:44 ` Dennis Lee Bieber
2017-08-27 16:32 ` Dmitry A. Kazakov
2017-08-19 8:47 ` Dmitry A. Kazakov
2017-08-10 12:18 ` J-P. Rosen
2017-08-10 12:40 ` Lucretia
2017-08-10 15:17 ` J-P. Rosen
2017-08-11 8:33 ` AdaMagica
2017-08-10 16:28 ` Pascal Obry
2017-08-10 16:52 ` Dmitry A. Kazakov
2017-08-10 17:08 ` Luke A. Guest
2017-08-10 17:25 ` Dmitry A. Kazakov
2017-08-11 1:02 ` Lucretia
2017-08-11 6:08 ` Dmitry A. Kazakov
2017-08-11 20:51 ` Randy Brukardt
2017-08-10 17:06 ` Luke A. Guest
2017-08-11 1:31 ` Randy Brukardt
2017-08-11 6:24 ` G.B.
2017-08-11 7:57 ` Stefan.Lucks
2017-08-11 8:34 ` Dmitry A. Kazakov
2017-08-11 8:53 ` Stefan.Lucks
2017-08-11 9:12 ` Dmitry A. Kazakov
2017-08-11 9:22 ` AdaMagica
2017-08-12 18:29 ` Jacob Sparre Andersen
2017-08-29 16:01 ` Alejandro R. Mosteo
2017-08-09 15:24 ` Johan Söderlind Åström
2017-08-09 17:23 ` Shark8
2017-08-09 18:49 ` Dmitry A. Kazakov
2017-08-31 6:59 ` Jacob Sparre Andersen
2017-08-28 23:49 ` faryumg
2017-08-29 8:17 ` Simon Wright
2017-08-31 13:35 ` Johan Söderlind Åström
2017-09-02 10:49 ` Vincent DIEMUNSCH
2017-09-02 11:04 ` Dmitry A. Kazakov
2017-09-02 11:21 ` Johan Söderlind Åström
2017-09-02 15:22 ` Vincent DIEMUNSCH
2017-09-02 17:19 ` Jeffrey R. Carter
2017-09-04 20:52 ` Johan Söderlind Åström
2017-09-03 1:30 ` Randy Brukardt
2017-09-06 15:02 ` Johan Söderlind Åström
2017-09-06 15:57 ` Jacob Sparre Andersen [this message]
2017-09-06 18:56 ` Johan Söderlind Åström
2017-09-06 21:21 ` Randy Brukardt
2017-09-08 21:04 ` Johan Söderlind Åström
2017-09-08 21:46 ` Dmitry A. Kazakov
2017-09-08 23:55 ` Johan Söderlind Åström
2017-09-16 12:49 ` Johan Söderlind Åström
2017-09-16 13:10 ` Dmitry A. Kazakov
2017-09-17 11:05 ` AdaMagica
2017-09-17 12:51 ` Dmitry A. Kazakov
2017-09-08 22:13 ` Jeffrey R. Carter
2017-09-10 21:09 ` Johan Söderlind Åström
[not found] ` <9d4274d7-5ad1-42d0-8ec3-de822e28ec6c@googlegroups.com>
2017-10-02 19:01 ` Randy Brukardt
2017-09-08 23:07 ` Randy Brukardt
2017-09-09 20:35 ` Johan Söderlind Åström
2017-10-02 18:57 ` Randy Brukardt
2017-09-09 14:48 ` G.B.
2017-09-03 1:35 ` Randy Brukardt
2017-09-03 10:32 ` Alejandro R. Mosteo
2017-09-03 12:59 ` Dmitry A. Kazakov
2017-09-05 22:25 ` Randy Brukardt
2017-09-05 22:29 ` Randy Brukardt
2017-09-02 16:49 ` Jeffrey R. Carter
2017-09-03 10:34 ` Alejandro R. Mosteo
2017-09-02 17:08 ` Jeffrey R. Carter
2017-09-06 16:38 ` Vincent DIEMUNSCH
2017-09-06 20:52 ` Egil H H
2017-09-06 21:30 ` Randy Brukardt
2017-09-08 15:49 ` Jeffrey R. Carter
2017-09-03 1:28 ` Randy Brukardt
2017-09-06 6:15 ` Shark8
2017-09-01 14:11 ` Björn Lundin
2017-09-01 14:47 ` J-P. Rosen
2017-09-01 16:02 ` Dmitry A. Kazakov
2017-09-01 17:53 ` Jacob Sparre Andersen
2017-09-01 18:06 ` J-P. Rosen
2017-09-01 19:02 ` Dmitry A. Kazakov
2017-09-03 1:22 ` Randy Brukardt
2017-09-11 18:49 ` Tarjei Jensen
2017-09-11 19:33 ` Dmitry A. Kazakov
2017-09-12 6:18 ` Tarjei Jensen
2017-09-12 6:38 ` gautier_niouzes
2017-09-12 7:02 ` Tarjei Jensen
2017-09-12 7:15 ` Dmitry A. Kazakov
2017-09-12 7:35 ` Simon Wright
2017-09-12 9:23 ` J-P. Rosen
2017-09-12 10:07 ` Dmitry A. Kazakov
2017-09-12 16:30 ` Shark8
2017-09-12 16:58 ` Dmitry A. Kazakov
2017-09-12 19:30 ` J-P. Rosen
2017-09-12 19:53 ` Dmitry A. Kazakov
2017-09-12 10:44 ` gautier_niouzes
2017-09-12 6:39 ` Egil H H
2017-09-12 7:02 ` Tarjei Jensen
2017-09-12 7:42 ` Egil H H
2017-09-12 8:24 ` Tarjei Jensen
2017-09-12 8:35 ` Dmitry A. Kazakov
2017-09-12 9:21 ` Egil H H
2017-09-12 10:22 ` Dmitry A. Kazakov
2017-09-12 10:48 ` Egil H H
2017-09-12 12:09 ` Dmitry A. Kazakov
2017-09-12 12:56 ` Egil H H
2017-09-12 13:14 ` Dmitry A. Kazakov
2017-09-12 13:25 ` Egil H H
2017-09-12 13:43 ` Dmitry A. Kazakov
2017-09-12 14:07 ` Egil H H
2017-09-12 15:59 ` Dmitry A. Kazakov
2017-09-12 14:36 ` Egil H H
2017-09-12 15:55 ` Dmitry A. Kazakov
2017-09-12 16:15 ` Egil H H
2017-09-12 16:40 ` Dmitry A. Kazakov
2017-09-12 16:47 ` Egil H H
2017-09-12 16:59 ` Dmitry A. Kazakov
2017-09-12 17:03 ` Egil H H
2017-09-12 17:17 ` Dmitry A. Kazakov
2017-09-12 17:29 ` Egil H H
2017-09-12 19:14 ` Dmitry A. Kazakov
2017-09-12 19:58 ` Egil H H
2017-09-13 7:24 ` Dmitry A. Kazakov
2017-09-13 8:13 ` Egil H H
2017-09-13 8:57 ` Dmitry A. Kazakov
2017-09-13 9:00 ` Egil H H
2017-09-12 18:55 ` Simon Wright
2017-09-12 17:43 ` Jeffrey R. Carter
2017-09-13 13:07 ` Alejandro R. Mosteo
2017-09-13 16:34 ` Jeffrey R. Carter
2017-09-13 18:34 ` Egil H H
2017-09-13 19:41 ` Jeffrey R. Carter
2017-09-14 12:30 ` Alejandro R. Mosteo
2017-09-14 13:36 ` J-P. Rosen
2017-09-14 18:08 ` Jeffrey R. Carter
2017-10-02 19:53 ` Randy Brukardt
2017-09-12 14:55 ` Simon Wright
2017-09-12 16:04 ` Dmitry A. Kazakov
2017-10-02 19:51 ` Randy Brukardt
2017-10-03 7:48 ` Simon Wright
2017-10-03 9:34 ` G.B.
2017-10-03 10:11 ` Dmitry A. Kazakov
2017-10-03 13:25 ` G.B.
2017-10-03 13:56 ` Dmitry A. Kazakov
2017-10-03 20:24 ` Randy Brukardt
2017-10-03 20:20 ` Randy Brukardt
2017-10-02 19:45 ` Randy Brukardt
2017-09-12 17:41 ` Jeffrey R. Carter
2017-09-12 21:04 ` G.B.
2017-09-13 7:30 ` Dmitry A. Kazakov
2017-09-13 17:39 ` G.B.
2017-09-13 19:34 ` Dmitry A. Kazakov
2017-09-14 6:57 ` G.B.
2017-09-14 7:33 ` Dmitry A. Kazakov
2017-10-02 10:06 ` reinert
2017-10-02 13:54 ` Jeffrey R. Carter
2017-10-02 14:56 ` reinert
2017-10-02 14:56 ` Dennis Lee Bieber
2017-10-02 15:02 ` G.B.
2017-10-02 16:23 ` reinert
2017-10-02 16:38 ` Dmitry A. Kazakov
2017-10-02 17:19 ` reinert
2017-10-02 17:39 ` Dmitry A. Kazakov
2017-10-02 19:10 ` Jeffrey R. Carter
2017-10-02 19:14 ` Jeffrey R. Carter
2017-10-03 3:30 ` reinert
2017-10-03 6:36 ` G.B.
2017-10-04 19:21 ` reinert
2017-10-04 19:33 ` Dmitry A. Kazakov
2017-10-04 21:45 ` G.B.
2017-10-04 22:04 ` Dmitry A. Kazakov
2017-10-05 6:50 ` G.B.
2017-10-05 7:21 ` Dmitry A. Kazakov
2017-10-04 12:38 ` Daniel Norte Moraes
-- strict thread matches above, loose matches on Subject: below --
2017-08-03 5:53 Randy Brukardt
2017-08-03 9:42 ` Dirk Craeynest
2017-08-03 9:52 ` Dirk Craeynest
2017-08-05 0:10 ` Randy Brukardt
2017-08-03 12:52 laguest9000
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