fn get_info() ?(int, bool) {
    return 45, true
}

fn test_closure_in_if_guard() {
    mut ret := ''
    if v1, v2 := get_info() {
        func := fn [v1, v2] () string {
            println(v1)
            println(v2)
            return '${v1}, ${v2}'
        }
        ret = func()
    }
    assert ret == '45, true'
}