Re: SCM_POSFIXABLE(-1) fails with MSVC++ 6.0

[Lars J. Aas]

Lars J. Aas <address@hidden> 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