On Fri, Jul 29, 2022 at 11:38:42AM +0200, Daniel Bristot de Oliveira wrote: [...] > +static inline type model_get_next_state_##name(enum states_##name curr_state, \ > + enum events_##name event) \ > +{ \ > + if ((curr_state < 0) || (curr_state >= state_max_##name)) \ > + return INVALID_STATE; \ > + \ > + if ((event < 0) || (event >= event_max_##name)) \ > + return INVALID_STATE; \ Should define the INVALID_EVENT corresponding to event invalid case.