struct value_comparator *vc = xzalloc (sizeof (*vc));
struct comparator *cmptr = (struct comparator *) vc;
cmptr->flags = 0;
cmptr->var = var;
cmptr->compare = value_compare ;
struct value_comparator *vc = xzalloc (sizeof (*vc));
struct comparator *cmptr = (struct comparator *) vc;
cmptr->flags = 0;
cmptr->var = var;
cmptr->compare = value_compare ;