ref: cf9651df0886dc8a4c0fbc6da8488606e1e85c31
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 std.exit(y.a + y.b) }