go defer bug

package main

import (
   "fmt"
   "os"
)

func F() (int, string) {
   return 1, "o"
}

func ff(a int,   s string)  {
   fmt.Println(a)
   fmt.Println(s)
}

func f(p []byte)  {
   p[1] = 2
}

func main() {
   //ff(F())

   var p []byte
   if len(os.Args) == 3{
      p = make([]byte, 2)
      defer f(p)
      defer fmt.Fprint(os.Stderr, "1\n")
      fmt.Fprint(os.Stderr, "2\n")
   }
   fmt.Fprint(os.Stderr, "3\n")

}