ref: 7096d0e99d9deb053a7763f49b2b1b7b1df20a6a 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") }