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Example: Stack and Caller from RUNTIME package

Stack formats a stack trace of the calling goroutine into Slice and returns the number of bytes written to Slice. Caller reports file and line number information about function invocations on the calling goroutine's stack.
package main

import (
	"fmt"
	"runtime"
)

func stackExample() {
	stackSlice := make([]byte, 512)	
	s := runtime.Stack(stackSlice, false)
	fmt.Printf("\n%s", stackSlice[0:s])
}

func First() {
	Second()
}

func Second() {
	Third()
}

func Third() {
	for c := 0; c < 5; c++ {
		fmt.Println(runtime.Caller(c))
	}
}

func main() {
	fmt.Println("######### STACK ################")
	stackExample()
	fmt.Println("\n\n######### CALLER ################")
	First()
}

C:\golang\codes>go run example.go
######### STACK ################

goroutine 1 [running]:
main.stackExample()
C:/golang/codes/example.go:10 +0x60
main.main()
C:/golang/codes/example.go:30 +0x82


######### CALLER ################
4676922 C:/golang/codes/example.go 24 true
4676855 C:/golang/codes/example.go 19 true
4676823 C:/golang/codes/example.go 15 true
4677435 C:/golang/codes/example.go 32 true
4343718 C:/Go/src/runtime/proc.go 185 true

C:\golang\codes>