[C++-sig] Incrementing reference count of returned object pointer

[David Abrahams]

Patrick Hartling <patrick at vrac.iastate.edu> writes:

> Patrick Hartling wrote:
>
>>    Base* obj = boost::python::call<Base*>(factory_func);
>
> Okay, I think I got this worked out.  Instead of the above, I am doing
> the following (assuming namespace python = boost::python):
>
>     python::object base_obj = python::call<python::object>(factory_func);
>     Base* obj = python::extract<Base*>(base_obj);
>
> This seems to do the trick.  Is there anything fundamentally wrong
> with this?

Nothing fundamental. Of course if you were getting the dangling
reference exception when using call<Base*>, it's an indication that
base_obj (or a copy) must survive at least as long as obj does, or it
will be dangling again (and I can't protect you from that by throwing
a nice exception ;->).

-Dave

-- 
                       David Abrahams
   dave at boost-consulting.com * http://www.boost-consulting.com
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