ref: 2f5e8d6a9a76d8a51a5d33146913cde4530a6501 dir: /test/genericmatch.myr/
use std type t(@a) = union `Foo @a `Bar ;; const main = { match `Foo 123 | `Foo a: std.exit(0xf) | `Bar: std.exit(0x0) ;; }