[C++-sig] Boost.Python: wrapping a method returning const std::string &

[Bilokon, Paul]

Hi c++-sig,

Sorry if this is supposed to be glaringly obvious, but I thought
std::string types were pretty much fully supported in Boost.Python
(looking at Boost 1.35.0).

I'm trying to wrap a method

    const std::string& getName( ) const;

This should be straightforward, right?

I'm doing it like this:

    class_<Ccy>("Ccy", init<>())
        .def("getName", &Ccy::getName)
    ;

But in return I'm getting

Error	6	error C2027: use of undefined type
'boost::python::detail::specify_a_return_value_policy_to_wrap_functions_
returning<T>'
E:\dev\external\boost\boost_1_35_0\boost\python\detail\caller.hpp
223	

Is this because the string is returned by reference? Do I have to wrap
the method? If so, I would be very much obliged if you could direct me
to an example.

Many thanks,
Paul
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