vlib/v/checker/tests/unknown_comptime_expr.vv:5:6: error: `foo` is mut and may have changed since its definition
    3 | fn main() {
    4 |     mut foo := 0
    5 |     $if foo == 0 {}
      |         ~~~
    6 | 
    7 |     bar := unknown_at_ct()
vlib/v/checker/tests/unknown_comptime_expr.vv:8:6: error: definition of `bar` is unknown at compile time
    6 | 
    7 |     bar := unknown_at_ct()
    8 |     $if bar == 0 {}
      |         ~~~
    9 | }
