Hi,


> I found that answer for exceptions which can occur during the processing:
>
>https://lists.boost.org/boost-users/2012/03/73904.php
>
>Here is handled the case that exception is derived from std::exception.
>What happens if not?
>Can the parameter be changed to std::exception_ptr or just a
> template Parameter?

only std::exception are caught. Others just go through and interrupt the transition, which might leave the state machine in a dirty state, where an entry or exit action would not have been called.

Cheers,
Christophe