ref: 09f4922d56d1946aa02d5fedccb53b8a32d76ad2 dir: /test/structarray.myr/
type t = struct a : int[42] ;; const main = { var v : t v.a[0] = 12 v.a[1] = 20 -> 2*v.a[0] + v.a[1] }