ref: 92dd0254be91f229e53403e4edb0997c4b78bfcd 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 }