set_const likes to create references

[eschnett]

I was using set_const to define enum values. This code works fine (CHAR is an enum constant):

        mod.set_const("CHAR", CHAR);

This code, however, leads to problems and crashes while precompiling:

        const Datatype dt = CHAR;
        mod.set_const("CHAR", dt);

It seems that this creates something that is a CxxReference{Datatype} on the Julia side, and which internally holds a pointer.

Is that behaviour ever useful? If not, should set_const automatically remove references etc.?

[barche]

Confirmed, until I can find a more elegant fix, you can work around this using:

mod.set_const("CHAR", static_cast<Datatype>(dt));