can: suppress clang tidy warning about nullptr dereference
@@ -353,7 +353,7 @@ static void can_alert_handler(uint32_t alert_code, int *alert_req)
}
}
-static void can_intr_handler_err_warn(can_status_reg_t *status, BaseType_t *task_woken, int *alert_req)
+static void can_intr_handler_err_warn(can_status_reg_t *status, int *alert_req)
{
if (status->bus) {
if (status->error) {
@@ -478,10 +478,15 @@ static void can_intr_handler_main(void *arg)
status.val = can_get_status();
intr_reason.val = (p_can_obj != NULL) ? can_get_interrupt_reason() : 0; //Incase intr occurs whilst driver is being uninstalled
+#ifdef __clang_analyzer__
+ if (intr_reason.val == 0) { // Teach clang-tidy that all bitfields are zero if a register is zero; othewise it warns about p_can_obj null dereference
+ intr_reason.err_warn = intr_reason.err_passive = intr_reason.bus_err = intr_reason.arb_lost = intr_reason.rx = intr_reason.tx = 0;
+ }
+#endif
//Handle error counter related interrupts
if (intr_reason.err_warn) {
//Triggers when Bus-Status or Error-status bits change
- can_intr_handler_err_warn(&status, &task_woken, &alert_req);
+ can_intr_handler_err_warn(&status, &alert_req);
}
if (intr_reason.err_passive) {
//Triggers when entering/returning error passive/active state
