[go-nuts] Panic not recovered inside my panic recover function

[ZPL]

Hi, group. 

Recently I found an issue in our product, panic can't be recoved in some 
situation, I spend some time on it.  

Please find following simple Test function, I don't understand why logPanic 
function cant' catch the panic, but call recover directly can do that.


package main

import (
    "fmt"
    "sync"
    "testing"
)

var (
    groups = &sync.WaitGroup{}
)

func logPanic() {
    if err := recover(); err != nil {
        fmt.Println("got panic")
        return
    }
}

func DoTask() {
    DoTask1Panic()
    groups.Wait()
}

func DoTask1Panic() {
    groups.Add(1)

    go func() {
        defer func() {
* // logPanic can't recover from panic here*
            logPanic()
// But can recover from here
            // if err := recover(); err != nil {
            //  fmt.Println(err)
            // }
            groups.Done()
        }()
        panic("panic")
    }()
}

func TestPanic(t *testing.T) {
    DoTask()
    fmt.Println("Done")
}

-- 
You received this message because you are subscribed to the Google Groups 
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to golang-nuts+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/golang-nuts/6b9eb342-a722-4af0-a12b-dcf65a0d2312%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.