[C++-sig] another V2 bug

[Peter Bienstman]

Adding a second argument to an otherwise identical function fails to
compile:

#define BOOST_PYTHON_DYNAMIC_LIB
#define BOOST_PYTHON_V2

#include <boost/python/module.hpp>
#include <boost/python/class.hpp>

struct C {};

struct FE {};

struct MWG
{
   const FE fe (const C&)           {return FE();}
   const FE fe2(const C&, const C&) {return FE();}
};

BOOST_PYTHON_MODULE_INIT(m)
{
  using namespace boost::python;

  module m("m");
  
  m
    .add(class_<C>("C"))
    .add(class_<FE>("FE"))
    .add(
      class_<MWG>("MWG")
      .def("fe",  &MWG::fe)  // this compiles.
      .def("fe2", &MWG::fe2) // this doesn't.
      )
    ;
}


Compiler output:

pbienst at hunsmac:~/tmp$ g++ -I/home/pbienst/boost_cvs/boost
-I/home/pbienst/local/include/python2.2 -shared boost_test.cpp
/home/pbienst/boost_cvs/boost/boost/python/detail/member_function_cast.hpp: In
   static member function `static boost::python::detail::cast_helper<S,
R
   (T::*)(A0, A1)>
   boost::python::detail::member_function_cast_impl<T>::stage1(R
(S::*)(A0,
   A1)) [with S = MWG, R = const FE, A0 = const C&, A1 = const C&, T =
MWG]':
/home/pbienst/boost_cvs/boost/boost/python/class.hpp:99:   instantiated
from `boost::python::class_<T, X1, X2, X3>& boost::python::class_<T, X1,
X2, X3>::def(const char*, F) [with F = const FE (MWG::*)(const C&, const
C&), T = MWG, X1 = boost::python::detail::not_specified, X2 =
boost::python::detail::not_specified, X3 =
boost::python::detail::not_specified]'
boost_test.cpp:30:   instantiated from here
/home/pbienst/boost_cvs/boost/boost/python/detail/member_function_cast.hpp:68: conversion
   from `boost::python::detail::cast_helper<const FE (MWG::*)(const C&,
const
   C&), const FE (MWG::*)(const C&, const C&)>' to non-scalar type
   `boost::python::detail::cast_helper<MWG, const FE (MWG::*)(const C&,
const
   C&)>' requested