From: "Marin David Condic" <marin.condic.auntie.spam@pacemicro.com>
Subject: Re: Static assertions
Date: Thu, 17 May 2001 15:09:28 -0400
Date: 2001-05-17T19:09:30+00:00 [thread overview]
Message-ID: <9e17la$km6$1@nh.pace.co.uk> (raw)
In-Reply-To: 3B040DE4.468E779F@boeing.com
You have to be careful of the declarations. Just because you maybe did
something to declare (for example) a 16 bit integer type, doesn't mean that
'Size for the type won't end up as 32. Even if you use a rep clause, the
compiler doesn't have to honor it - although one would hope it was at least
polite enough to inform you of that fact.
Perhaps you could post the code you created to test it?
MDC
--
Marin David Condic
Senior Software Engineer
Pace Micro Technology Americas www.pacemicro.com
Enabling the digital revolution
e-Mail: marin.condic@pacemicro.com
Web: http://www.mcondic.com/
"Jeffrey Carter" <jeffrey.carter@boeing.com> wrote in message
news:3B040DE4.468E779F@boeing.com...
> Jean-Pierre Rosen wrote:
> >
> > package Verifier is
> > subtype Assert is Boolean range True..True;
> >
> > Assert_1 : constant := Boolean'Pos( Assert (Integer'Size=32) );
> > Assert_2 : constant := Boolean'Pos( Assert
> > (Integer'Size=4*Character'Size) );
> > end Verifier;
> >
> > (The Boolean'Pos serves to have a value used in a named number
declaration,
> > which requires a static context).
>
> Interesting. However, Rational Apex 2.4.6 on HP compiles this fine even
> if the declarations are changed to make the expressions false. A test
> program to output the values of Assert_X produces 2 zeros.
>
> If I change the declarations to
>
> Assert_1 : constant Assert := Integer'Size = 73;
>
> then the unit will not compile.
>
> --
> Jeffrey Carter
next prev parent reply other threads:[~2001-05-17 19:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-17 15:07 Static assertions Jean-Pierre Rosen
2001-05-17 17:44 ` Jeffrey Carter
2001-05-17 19:09 ` Marin David Condic [this message]
2001-05-17 22:34 ` Jeffrey Carter
2001-05-18 13:39 ` Marin David Condic
2001-05-18 1:23 ` Robert A Duff
2001-05-19 7:40 ` David Kristola
2001-05-19 22:56 ` Robert A Duff
2001-05-19 8:36 ` Aaro Koskinen
2001-05-21 7:50 ` Jean-Pierre Rosen
2001-06-12 3:59 ` David Thompson
-- strict thread matches above, loose matches on Subject: below --
2001-05-18 5:34 Christoph Grein
2001-05-18 13:38 ` Robert A Duff
2001-05-18 16:15 ` Jeffrey Carter
2001-05-18 17:25 ` Ted Dennison
2001-05-18 21:27 ` Robert A Duff
2001-05-18 22:46 ` Jeffrey Carter
2001-05-19 22:53 ` Robert A Duff
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox