The intellisense and syntax highlighting do not work with typedef of templated typedef

#include <string>

using namespace std;

struct A
{ typedef string Astring_t; };

template <class T>
struct B
{ typedef typename T::Astring_t Bstring_t; };

struct C : public B<A>
{
    void test()
    {
        Bstring_t aStr;
        aStr.c_str(); // HERE AUTOCOMPLETION AND HIGLIGHTING don't work
    }
};

int main() {}