Can anyone figure out why GCC 3.3.3 doesn't like the following member function overloads? VC7/8/9 and GCC 4.1.2 have no problems with this code. #include <boost/mpl/and.hpp> #include <boost/mpl/not.hpp> #include <boost/type_traits/is_const.hpp> #include <boost/type_traits/is_convertible.hpp> #include <boost/utility/enable_if.hpp> struct Bar { }; template <class T> struct Baz { }; struct Foo { template <class T> typename boost::enable_if < boost::mpl::and_ < boost::is_convertible<T,Bar> , boost::mpl::not_<boost::is_const<T> > >

::type set(Baz<T> const & _value);

template <class T> typename boost::enable_if < boost::mpl::and_ < boost::is_convertible<T,Bar> , boost::is_const<T> >

::type set(Baz<T> const &); };

GCC 3.3.3's error message is: error: `template<class T> typename boost::enable_if<boost::mpl::and_<boost::is_convertible<T, Bar>, boost::is_const<T>, mpl_::bool_<true>, mpl_::bool_<true>, mpl_::bool_<true>

, void>::type Foo::set(const Baz<T>&)' and `template<class T> typename boost::enable_if<boost::mpl::and_<boost::is_convertible<T, Bar>, boost::mpl::not_<boost::is_const<T> >, mpl_::bool_<true>, mpl_::bool_<true>, mpl_::bool_<true> >, void>::type Foo::set(const Baz<T>&)' cannot be overloaded

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