const GetStrSig = func(): &u8;
const GetStr: GetStrSig = func(): &u8 {
    return "Hello, indirect calls!";
};

const GetGetStr = func(): GetStrSig {
    return GetStr;
};

const Printf = func printf(&u8): i32;

const Main = func main(): i32 {
    Printf(GetGetStr()());
    return 0;
};