Assuming we have this test:

func TestRecover(t *testing.T) {
 f := func() (interface{}, error) {
 panic(`TEST`)
 }
 r, e := Recover(f)
 t.Log(r, e)
}

And two versions of *Recover* function.

Version 1:
func Recover(f func() (interface{}, error)) (interface{}, error) {
 var result interface{}
 var err error

 defer func() {
 if e := recover(); e != nil {
 err = errors.Error(fmt.Sprintf("%v", e))
 }
 }()

 result, err = f()

 return result, err
}


Version 2:
func Recover(f func() (interface{}, error)) (res interface{}, err error) {
 defer func() {
 if e := recover(); e != nil {
 err = errors.Error(fmt.Sprintf("%v", e))
 }
 }()

 res, err = f()

 return res, err
}


*Question:* Why the output of test for Version 1 is *<nil> <nil>* (*not 
expected/wrong*) but for Version 2 is *<nil> TEST* (*as expected/correct*)?

- Go 1.7, Ubuntu 14.04 x64

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