841     let mut old_act = regs.r10 as usize as *mut user_sigaction;  in sys_sigaction()  localVariable
908         if old_act.is_null() {  in sys_sigaction()
916     if (retval == Ok(())) && (!old_act.is_null()) {  in sys_sigaction()
917         if unsafe { !verify_area(old_act as usize as u64, size_of::<sigaction>() as u64) } {  in sys_sigaction()
933             (*old_act).sa_handler = sah as *mut c_void;  in sys_sigaction()
934             (*old_act).sa_flags = old_ka.sa_flags;  in sys_sigaction()
935             (*old_act).sa_mask = old_ka.sa_mask;  in sys_sigaction()
936             (*old_act).sa_restorer = old_ka.sa_restorer as *mut c_void;  in sys_sigaction()
950     old_act: Option<&mut sigaction>,  in do_sigaction()
968     let old_act: Option<&mut sigaction> = {  in do_sigaction()  localVariable
969         if old_act.is_some() {  in do_sigaction()
970             let oa = old_act.unwrap();  in do_sigaction()
989     if old_act.is_some() {  in do_sigaction()
990         old_act.unwrap().sa_flags &= SA_ALL_FLAGS;  in do_sigaction()