package main
import (
   "fmt"
   "time"
)
func main() {
   for true{
      defer func() {
         if e := recover(); e != nil {
            fmt.Println(e)
         }
      }()
      barking()
      time.Sleep(time.Second)
   }
}
func barking() {
   defer func() {
      if e := recover(); e != nil {
         fmt.Println(e)
      }
   }()
   bak()
}
func bak() {
   panic("bing dog barking")
}