ref: d4f8f2a57a2d1b7adf6d9f45a1d3661cfd3d3d48 dir: /test/structasn.myr/
type pair = struct a : int b : int ;; const main = { var x : pair var y : pair x.a = 12 x.b = 30 y = x -> y.a + y.b }