Can someone explain why this simple snippet fails to compile? Am I doing something wrong or is this iterator_range problem? I've tested it on msvc 2005 and g++ 4.2.3 against boost trunk. #include <boost/static_assert.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/equal.hpp> #include <boost/mpl/vector_c.hpp> #include <boost/mpl/transform.hpp> #include <boost/mpl/iterator_range.hpp> int main() { using namespace boost::mpl; using namespace boost::mpl::placeholders; typedef vector_c<int, 1, 2, 3, 4> test_t; typedef begin<test_t>::type first; typedef advance<first, int_<2> >::type last; typedef iterator_range<first, last>::type range; BOOST_STATIC_ASSERT(( equal<range, vector_c<int, 1, 2> >::value )); typedef transform<range, identity<_> >::type transformed_range; } Thank you in advance. -- Slavomir Kaslev