Calling stat with a NULL pointer produces an oops on the
current Alpha kernel instead of correct returning
EFAULT. (as it does on Intel)

The following program demonstrates.

====
#include <sys/stat.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>

int main ()
{
  struct stat buf;

  if (stat (NULL, &buf) != 0)
    printf("Error correctly returned: %s\n",
	    strerror (errno));
}