It seems that clang++ (I tried clang 3.2) treats the name of a template class as a instantiated class, not a template for any occurence within the class scope. For example,
This is nonconformant behavior as of C++11 because C++11 says that the injected class name (which is a name automatically declared within the class body) is a template when it is passed to a template template parameter. So your code should only fail in a C++03 implementation.
However there is no need to open a bug report about this now. I have already done it way back.