package main

import (
  "errors"
  "fmt"
)

func main() {
  a()
  fmt.Println("This line will now get printed from main() function")
}
func a() {
  b("good-bye")
  fmt.Println("Back in function a()")
}
func b(msg string) {
  defer func() {
    if r := recover(); r != nil {
      fmt.Println("error in func b()", r)
    }
  }()
  if msg == "good-bye" {
    panic(errors.New("something went wrong"))
  }
  fmt.Print(msg)
}