panic_recover.go

package main

import "fmt"

func f() {
    fmt.Println("Start f")
    defer func() {
        fmt.Println("Deferred in f")
    }()
    g()
    fmt.Println("End f")
}

func g() {
    fmt.Println("Start g")
    defer func() {
        fmt.Println("Deferred in g")
    }()
    h()
    fmt.Println("End g")
}

func h() {
    fmt.Println("Start h")
    defer func() {
        fmt.Println("1st deferred in h")
    }()
    defer func() {
        fmt.Println("2nd deferred in h")
        if p := recover(); p != nil {
            fmt.Printf("Panic found: %v\n", p)
        }
    }()
    defer func() {
        fmt.Println("3rd deferred in h")
    }()
    panic("boom!")
}

func main() {
    f()
}