ref: 3d20a6d5e0c554e9f3d0d3f504f4dfb28901ebb7 dir: /test/genericmatch.myr/
use std type t(@a) = union `Foo @a `Bar ;; const main = { match `Foo 123 `Foo a: -> 0xf;; `Bar: -> 0x0;; ;; }