Partial template specialization error with namespace & final by 顾益

My description is quite clear, please look at the code in VC++:
//header.h
#pragma once
namespace N
{
template <typename T>
class A final {};
template <typename T>//the partial specialization
class A<const T> final {};
}

//main.cpp
#include "header.h"
void main() {}

to the code above, the compiler will crash! reporting C1001 error.
please check, thank you.