ref: f89df20e0dae4f7884cd432e9064ddb0f6e26ede
dir: /test/matchstruct.myr/
use std type t = struct v1 : int v2 : int v3 : int ;; const main = { var v : t v.v1 = 2 v.v2 = 40 v.v3 = 10 match v [.v1 = x, .v2 = y, .v3 = 10]: -> x + y ;; _: std.die("Wat");; ;; -> 0 }