Is this a new bug ?

[Newbie2019 via Digitalmars-d-learn]

template Test(alias T){
        pragma(msg, T.stringof);
        enum Test = T.stringof;
}

string t1;
void t2(){}
void t3(string s){}

extern(C) void  main(){
        enum x1 = Test!(t1); // ok
        enum x2 = Test!(t2); //   expect t2,  but get t2()
        enum x3 = Test!(t3); //    Error: function 
test2.t3(string s) is not callable using argument types ()
}


I want get the function name "t2", "t3" for string mixin,  how do 
I do this in D ?