ref: 0500ef75d99bab9efd7932a9361ad3bebcb524b2 dir: /test/overlappingif.myr/
const main = { var v var x v = 0xff if v & 0xff00 != 0 x = 1 elif v & 0xfff0 != 0 x = 2 elif v & 0xffff != 0 x = 3 ;; -> x }