fn print_msg(msg: char*) {
    puts(msg);
}

fn run_callback(cb: fn*(char*), arg: char*) {
    cb(arg);
}

fn get_printer() -> fn*(char*) {
    return print_msg;
}

test "raw_func_ptr_basic" {
    run_callback(print_msg, "Hello Raw Ptr");
}

test "raw_func_ptr_return_explicit" {
    let p: fn*(char*) = get_printer();
    p("Returned Ptr Explicit works");
}

test "fn_ptr_ptr" {
    let p: fn*(char*) = print_msg;
    let pp: fn**(char*) = &p;
    (*pp)("Double Pointer works");
}