vlib/v/checker/tests/inner_functions_call_before_define.vv:2:7: error: unknown function: f
    1 | fn main() {
    2 |     _ := f()
      |          ~~~
    3 |     go f()
    4 |
vlib/v/checker/tests/inner_functions_call_before_define.vv:3:5: error: unknown function: f
    1 | fn main() {
    2 |     _ := f()
    3 |     go f()
      |        ~~~
    4 | 
    5 |     f := fn () string { return "hello" }
