ref: 0dccb3c895c2f8f1f758b2702e5d5d967c8998c2 dir: /test/genericret.myr/
use std type t(@a) = union `Val @a `None ;; const f = {-> t(int) -> `None } const main = { match f() | `None: std.exit(42) ;; std.exit(0) }