0-1-2 Infeasible paths clarification

[melinda.bradury]

I have a pure virtual function like
virtual void OnEvent(EventName event, State& superState) = 0;

For some of the derived classes, the implementation uses both of the the parameters. For others, the parameters are not used at all.

Is this acceptable?

[misra cpp]

We assume you meant to refer to 0-1-12 in your title?

If that is the case, then the usage you describe is compliant.