代码如下,用goland调试，加参数run child，在child子函数 cmd := exec.Command(os.Args[2])处下断点，无法在此处断下来。请问大佬们goland如何调试创建出的子进程 
`package main

import (
 "fmt"
 "os"
 "os/exec"
 "syscall"
)

func main() {
 fmt.Printf("Process => %v [%d]\n", os.Args, os.Getpid())
 switch os.Args[1] {
 case "run":
  run()
 case "child":
  child()
 default:
  println("have not define")
 }

}

func run() {
 cmd := exec.Command(os.Args[0], ...