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From: "Lars J. Aas" <larsa@sim.no>
Subject: Re: SCM_POSFIXABLE(-1) fails with MSVC++ 6.0
Date: Thu, 22 Aug 2002 15:47:20 +0200	[thread overview]
Message-ID: <20020822134720.GB16177@sim.no> (raw)
In-Reply-To: <20020822133052.GA16177@sim.no>

Lars J. Aas <larsa@sim.no> wrote:
: #ifdef LONG_BIT
: # define SCM_LONG_BIT LONG_BIT
: #else
: # define SCM_LONG_BIT (SCM_CHAR_BIT * sizeof (long) / sizeof (char))
: #endif

I boiled the problem down to this test failing:

  fprintf(stderr, "testing directly if -1 is <= sizeof(long) ");
  if ( -1 <= sizeof(long) ) fprintf(stderr, "true\n");
  else                      fprintf(stderr, "not so!\n");

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)))

  Lars J


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  reply	other threads:[~2002-08-22 13:47 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 [this message]
2002-08-23 10:40   ` Lars J. Aas
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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