From: Samuel Tardieu <sam@rfc1149.net>
Subject: Re: Enumeration representation clause surprise.
Date: Thu, 12 Jun 2008 23:26:55 +0200
Date: 2008-06-12T23:30:01+02:00 [thread overview]
Message-ID: <87hcbybazk.fsf@willow.rfc1149.net> (raw)
In-Reply-To: 770ae1af-b9fd-4c8a-915c-a5cb3ea8fc81@c65g2000hsa.googlegroups.com
> Interesting. I had been playing with a similar example, and have
> modified it a bit to present. What got me is the record type with
> length 1 but an object with that type that was length zero!
The only possible value for X_Type is X. This requires 0 bit of
information to represent this fact.
> (It compiles without any warnings).
With the proposed patch, it gives:
GNAT 4.4.0 20080611 (experimental)
Copyright 1992-2008, Free Software Foundation, Inc.
Compiling: test1.adb (source file time stamp: 2008-06-12 21:22:24)
26. X1 at 0 range 0 .. -1; -- Minus 1 !!
|
>>> warning: component representation will be biased
42 lines: No errors, 1 warning
next prev parent reply other threads:[~2008-06-12 21:26 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-11 11:38 Enumeration representation clause surprise Markus Schoepflin
2008-06-11 12:30 ` christoph.grein
2008-06-11 12:56 ` Markus Schoepflin
2008-06-11 13:08 ` christoph.grein
2008-06-11 13:28 ` Samuel Tardieu
2008-06-11 13:48 ` Markus Schoepflin
2008-06-11 13:56 ` Samuel Tardieu
2008-06-11 14:58 ` Adam Beneschan
2008-06-11 15:23 ` Markus Schoepflin
2008-06-12 2:37 ` Randy Brukardt
2008-06-12 2:37 ` Randy Brukardt
2008-06-11 15:56 ` Samuel Tardieu
2008-06-11 19:10 ` Adam Beneschan
2008-06-11 19:59 ` Niklas Holsti
2008-06-12 1:16 ` tmoran
2008-06-12 8:27 ` christoph.grein
2008-06-12 8:45 ` Markus Schoepflin
2008-06-12 16:43 ` Mike Silva
2008-06-12 18:41 ` Markus Schöpflin
2008-06-12 20:10 ` Mike Silva
2008-06-12 20:52 ` Simon Wright
2008-06-12 23:36 ` Mike Silva
2008-06-13 5:49 ` Simon Wright
2008-06-13 7:21 ` Keith Thompson
2008-06-13 13:31 ` Mike Silva
2008-06-13 14:45 ` Markus Schoepflin
2008-06-13 17:52 ` Keith Thompson
2008-06-13 9:14 ` Jean-Pierre Rosen
2008-06-12 19:05 ` richtmyer
2008-06-12 21:26 ` Samuel Tardieu [this message]
2008-06-12 22:42 ` Adam Beneschan
2008-06-13 7:11 ` Samuel Tardieu
2008-06-13 8:27 ` christoph.grein
2008-06-13 16:21 ` Adam Beneschan
2008-06-15 19:33 ` Robert A Duff
2008-06-16 14:50 ` Adam Beneschan
2008-06-16 19:18 ` Robert A Duff
2008-06-17 6:03 ` christoph.grein
2008-06-17 7:22 ` christoph.grein
2008-06-13 8:24 ` Peter Hermann
2008-06-13 14:47 ` Samuel Tardieu
2008-06-14 11:48 ` John B. Matthews
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