B_DUPLICATE
if (B_TYPE(bo->type) != B_DUPLICATE)
case B_DUPLICATE:
case B_DUPLICATE:
if (B_TYPE(bo->type) == B_DUPLICATE) {
B_TSET(bo.type, B_DUPLICATE, 0);
case B_DUPLICATE:
case B_DUPLICATE:
case B_DUPLICATE:
case B_DUPLICATE:
case B_DUPLICATE:
case B_DUPLICATE:
B_TYPE(bi->type) != B_DUPLICATE &&
B_TYPE(bk->type) != B_DUPLICATE &&
case B_DUPLICATE: