package main

import "fmt"

func f4() {

        defer func() {
                fmt.Println("defer f::anon1()")
                        for {
                                if p := recover(); p == nil {
                                        break
                                } else {
                                fmt.Println("recover panic:",p)
                                }
                        }
                panic("panic 6")
        }()
        defer func() {
                fmt.Println("defer f::anon2()")
                panic("panic 5")
        }()

        defer func() {
                fmt.Println("defer f::anon3()")
                panic("panic 4")
        }()

        defer func() {
                defer func() {
                        panic("start panic : f::anon::anon()")
                        panic("panic 2")
                        panic("panic 3")
                }()
                defer func() {
                        fmt.Println("defer f::anon::anon()")
                }()
        }()
        func() {
                fmt.Println("in f::anon()")
        }()
}

func defer_f3() {
        fmt.Println("in defer_f3()")
        recover()
        defer func() {
                fmt.Println("defer defer_f3::anon()")
        }()
}

func f3() {
        fmt.Println("f4()")
        f4()
        defer defer_f3()
}

func f2() {
        fmt.Println("f3()")
        f3()
        defer func() {
                recover()
                fmt.Println("defer f2()")
        }()
}

func f1() {
        fmt.Println("f2()")
        f2()
        defer func() {
                fmt.Println("defer f1()")
        }()
}

func main() {
        fmt.Println("f1()")
        f1()
        recover()
        defer func() {
                fmt.Println("defer main::anon()")
                fmt.Println("recover in defer main::anon() :",recover())
        }()
}