[Bug c++/71653] error when trying to compile a code with template friend function in a struct

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71653

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If I don't use an alias template in the original declaration of f it works:
template <typename T> using C = typename T::InnerType;
template <typename T> typename T::InnerType f(T &);
class S {
    using InnerType = int;
    template <typename T> friend C<T> f(T &);
};
int main()
{
    S s;
    f(s);
    return 0;
}