Capturing the stack trace of a panic

Printing or logging a stack trace when a panic is detected is a critical tool in identifying problems at runtime. This recipe shows how you can add a stack trace to your logging messages.

How to do it...

Use the debug.Stack function with recover:

import "runtime/debug"
import "fmt"
func main() {
    defer func() {
        if r := recover(); r != nil {
            stackTrace := string(debug.Stack())
            // Work with stackTrace
            fmt.Println(stackTrace)
        }
    }()
    f()
}
func f() {
   var i *int
   *i=0
}

When inside the recovery function, the debug...