ref: f2365d327bed87e68d94b9b458cf27b70efc9f4b
dir: /test/structasn.myr/
use std /* tests block assignment of structs. exits with 42.*/ 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 }