// is confused when it encounters a split-stack function
// that needs 0 bytes of stack space.

package main

type Peano *Peano

func makePeano(n int) *Peano {
	if n == 0 {
		return nil
	}
	p := Peano(makePeano(n - 1))
	return &p
}

var countArg Peano
var countResult int

func countPeano() {
	if countArg == nil {
		countResult = 0
		return
	}