ref: 2f8d3d7f2e4e3592b0a2fce30a4ec218aafe9bce 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) ;; }