using selfhost.vm.scan as MiniVmScan

static box Main {
  main(args) {
    local s = "abc"
    // twice to check stability
    print(new MiniVmScan().index_of_from(s, "b", 0))
    print(new MiniVmScan().index_of_from(s, "b", 0))
    return 0
  }
}
