// run
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
func shift(x int) int { return 1 << (1 << (1 << (uint(x)))) }
func main() {
if n := shift(2); n != 1<<(1<<(1<<2)) {
println("bad shift", n)
panic("fail")
}
}