struct Foo { int bar; };

template<typename T>
struct Outer
{
    T *t;
    struct Nested { T *nt; } nested;
};

int main(int argc, char *argv[])
{
    Outer<Foo> list;
    list.t-> // works
    list.nested.nt-> // doesn't work
    Outer<Foo>::Nested nested;
    nested.nt-> // doesn't work
    return 0;
}