ref: 3ccf3f0a5e3c33e3722a9ea29134ea5a7dacf041 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) ;; }