1*11be35a1SLionel Sambuc /* cast initialization as the rhs of a - operand */ 2*11be35a1SLionel Sambuc struct sockaddr_dl { 3*11be35a1SLionel Sambuc char sdl_data[2]; 4*11be35a1SLionel Sambuc }; 5*11be35a1SLionel Sambuc 6*11be35a1SLionel Sambuc int npdl_datasize = sizeof(struct sockaddr_dl) - 7*11be35a1SLionel Sambuc ((int) ((unsigned long)&((struct sockaddr_dl *) 0)->sdl_data[0])); 8