ref: 3360bf0e88b086b0c7f7957eeb4a6f0b4eaeebc7 dir: /test/recgeneric.myr/
use std type o(@a::integral) = union `S @a ;; type x(@k) = struct n : o(x(@k)#) ;; const main = { var test : x(int) std.put("built\n") }