Why do gcc and clang generate different symbol names for an instantiation of a function template?

Consider the following example:

struct A {
  using type = int;
};

template <typename T>
using B = A;

template <typename T>
typename B<T>::type f() { return {}; }

template B<int>::type f<int>();

Clang generates symbol named int f<int>() while GCC generates B::type f<int>() for the instantiation: https://godbolt.org/z/MCCza4

Why don't the compilers agree and shouldn't GCC also resolve B::type to int?