ref: 5aaf4d7e6e7eb9e55bf314a2db83ab25b834b4fb 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") }