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From: "Lars J. Aas" <larsa@sim.no>
Subject: Re: SCM_POSFIXABLE(-1) fails with MSVC++ 6.0
Date: Fri, 23 Aug 2002 12:40:54 +0200	[thread overview]
Message-ID: <20020823104054.GA27923@sim.no> (raw)
In-Reply-To: <20020822134720.GB16177@sim.no>

Lars J. Aas <larsa@sim.no> wrote:
: Changing the alternative definition of SCM_LONG_BITS to cast the value
: to long like this works...
: 
: # define SCM_LONG_BIT ((long)(SCM_CHAR_BIT * sizeof (long) / sizeof (char)))

Come to think of it, the cast is better placed on the inside so it's more
evident what is being done (stopping the unsigned-ness of the sizeof()-
operations to propagate incorrectly out through the macro invokation) so
it's not removed later by someone not knowing about this compiler bug.

# define SCM_LONG_BIT (SCM_CHAR_BIT * ((long) (sizeof (long) / sizeof (char))))

or s/long/int/ on the cast?

BTW, is anyone reading these mails? ;)

  Lars J


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  reply	other threads:[~2002-08-23 10:40 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-08-22 13:30 SCM_POSFIXABLE(-1) fails with MSVC++ 6.0 Lars J. Aas
2002-08-22 13:47 ` Lars J. Aas
2002-08-23 10:40   ` Lars J. Aas [this message]
2002-08-24  7:42     ` Dirk Herrmann
2002-08-24 15:57       ` Lynn Winebarger
2002-08-25 13:27       ` Lars J. Aas
2002-08-25 16:01         ` Lynn Winebarger

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