FreeTDS Development Group

[Mark Schaal <mark AT champ.tstonramp.com>]

> 
> Mark,
> 
> Is HW_BIG_ENDIAN a good way to check if we need to do a memcpy or use a
> cast?  If memory serves, Alpha tends not to like unaligned access as well
> and is little endian.  Does anyone know if there is a way to determine
> alignment boundries? (I think perl does this during its config). Is
> there an autoconf macro to do this that we should be checking for?
> 
> Brian

No, I would say it's a terrible way to check.  :-)  I will look into
the perl config eventually, if no-one else gets to it.  I've never
dealt with alignment problems and I was only guessing as to what was
happening there.  I was happy enough to get something working that 
didn't rely on having a longlong type.

Could one use something like the following and see if it dies with SIGBUS ?

int main()
{
  char c[6];
  long l1,l2;

  memset(c,'\0',6);
  l1 = *(long *)c;
  l2 = *(long *)(c+2);
  exit((int)(l1+l2));
}

Mark
-- 
Mark J. Schaal                                  Phone:      (909) 620-7724
TST On Ramp                                     Fax:        (909) 620-8174
System Administrator                            E-Mail: mark AT tstonramp.com