ref: 3360bf0e88b086b0c7f7957eeb4a6f0b4eaeebc7 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) ;; }