Gennadiy Rozental wrote:
class input_iterator_adaptor define like this:
class input_iterator_facade : public iterator_facade<...> Any recommendations?
Is input_iterator_facade defined in the same namespace as iterator_core_access? If not, the friend declaration is doing the wrong thing.
-- Dave Abrahams
input_iterator_facade reside in namespace boost::unit_test.
If you intend to make boost::iterator_core_access friend the friend declaration is indeed wrong as Dave suggested. There is basically no name lookup for friend declarations. I.e. a non qualified name in a friend declaration either declares a class/function in the current namespace or "refers" to such a thing that is in the current namespace. of boost you need to say friend class boost::iterator_core_accessIn order to make boost::iterator_core_access friend from a sub namespace. HTH Thomas -- Thomas Witt witt@acm.org