[boost] [MPL] compiler error under GCC 4.1.1

From: Hailin Jin (hljin_at_[hidden])
Date: 2006-10-09 18:01:15

I have been encountering a strange problem with MPL under GCC 4.1.1. The 
following code snippet compiles fine under GCC 4.0.2 but fails under GCC 
4.1.1. Any idea?

Hailin
--
#include <boost/mpl/vector.hpp>
#include <boost/mpl/transform.hpp>
struct int_t {
    typedef unsigned int type;
};
template <typename T2>
struct unsigned_t {
    struct unsigned_t_func {
        template <typename T>
        struct apply {
            typedef typename T::type type;
        };
    };
    typedef typename boost::mpl::transform<T2, unsigned_t_func>::type type;
};
int main() {
    typedef unsigned_t<boost::mpl::vector<int_t> >::type const_t;
    return 0;
}