From: Brian Drummond <brian@shapes.demon.co.uk>
Subject: Re: Haskell, anyone?
Date: Mon, 16 Nov 2015 14:38:55 -0000 (UTC)
Date: 2015-11-16T14:38:55+00:00 [thread overview]
Message-ID: <n2cppv$a41$1@dont-email.me> (raw)
In-Reply-To: lyegfqib83.fsf@pushface.org
On Mon, 16 Nov 2015 08:45:32 +0000, Simon Wright wrote:
> "Nasser M. Abbasi" <nma@12000.org> writes:
>>>gnatmake foo.adb
>> gcc-4.8 -c foo.adb foo.adb:8:12: warning: value not in range of type
>> "I" defined at line 4 foo.adb:8:12: warning: "Constraint_Error" will be
>> raised at run time
>
> The compiler can only do this because the values and the assignment are
> close enough (in the same scope?). How often does this sort of mistake
> happen IRL?
Often enough to make the warning worthwhile : I've seen it at least once
IRL.
But you're correct : even passing one of the expression variables in as a
parameter is enough to defeat the warning, even whet the actual parameter
is a constant - or even a literal. That case too could potentially be
warned about, but then you're well into the realm of diminished returns.
-- Brian
next prev parent reply other threads:[~2015-11-16 14:38 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-15 20:42 Haskell, anyone? mockturtle
2015-11-15 20:51 ` Paul Rubin
2015-11-15 20:53 ` Nasser M. Abbasi
2015-11-15 21:50 ` Mark Carroll
2015-11-15 22:11 ` mockturtle
2015-11-15 22:48 ` Nasser M. Abbasi
2015-11-15 23:05 ` Mark Carroll
2015-11-16 4:11 ` Paul Rubin
2015-11-16 5:17 ` Nasser M. Abbasi
2015-11-16 5:48 ` Paul Rubin
2015-11-16 5:59 ` Nasser M. Abbasi
2015-11-16 6:47 ` Paul Rubin
2015-11-16 8:45 ` Simon Wright
2015-11-16 14:38 ` Brian Drummond [this message]
2015-11-15 23:19 ` Jeffrey R. Carter
2015-11-16 9:36 ` J-P. Rosen
2015-11-16 18:14 ` Jeffrey R. Carter
2015-11-16 3:59 ` Paul Rubin
2015-11-16 8:33 ` Dmitry A. Kazakov
2015-11-16 9:33 ` mockturtle
2015-11-16 9:45 ` Paul Rubin
2015-11-16 10:25 ` Hadrien Grasland
2015-11-16 11:19 ` Simon Wright
2015-11-16 11:25 ` Hadrien Grasland
2015-11-16 13:59 ` G.B.
2015-11-16 20:24 ` Jeffrey R. Carter
2015-11-16 23:23 ` Paul Rubin
2015-11-17 8:26 ` Dmitry A. Kazakov
2015-11-17 9:10 ` Mark Carroll
2015-11-17 20:09 ` Dmitry A. Kazakov
2015-11-17 10:49 ` Hadrien Grasland
2015-11-17 12:01 ` G.B.
2015-11-17 16:43 ` Hadrien Grasland
2015-11-17 18:04 ` Paul Rubin
2015-11-17 21:42 ` Hadrien Grasland
2015-11-18 4:36 ` Paul Rubin
2015-11-18 8:48 ` Hadrien Grasland
2015-11-18 9:23 ` Paul Rubin
2015-11-18 10:44 ` Hadrien Grasland
2015-11-18 11:02 ` Dmitry A. Kazakov
2015-11-18 12:41 ` G.B.
2015-11-18 23:06 ` Randy Brukardt
2015-11-19 8:56 ` Hadrien Grasland
2015-11-19 9:19 ` Hadrien Grasland
2015-11-19 21:27 ` Randy Brukardt
2015-11-24 12:03 ` Jacob Sparre Andersen
2015-11-19 7:22 ` Paul Rubin
2015-11-19 9:39 ` Hadrien Grasland
2015-11-17 13:01 ` Thomas Løcke
2015-11-17 16:45 ` Hadrien Grasland
2015-11-18 0:11 ` Paul Rubin
2015-11-18 9:44 ` Hadrien Grasland
2015-12-06 12:59 ` David Thompson
2015-12-07 7:25 ` Hadrien Grasland
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