Demonstrate godbus RemoveSignal panic

signal-test.go

package main

import (
	"fmt"
	"log"
	"time"

	"github.com/godbus/dbus"
)

func main() {
	bus, err := dbus.SessionBus()
	if err != nil {
		log.Fatal(err)
	}

	// Watch for signals
	fmt.Println("Setting up signal watch")
	ch := make(chan *dbus.Signal)
	bus.Signal(ch)
	if err := bus.BusObject().AddMatchSignal("com.example.Test", "Signal").Store(); err != nil {
		log.Fatal(err)
	}

	// Send a matching signal, then wait to make sure it has been delivered
	fmt.Println("Sending signal")
	if err := bus.Emit("/", "com.example.Test.Signal"); err != nil {
		log.Fatal(err)
	}
	time.Sleep(5 * time.Second)

	// Remove the signal watch, and give a little time to settle
	fmt.Println("Removing signal watch")
	bus.RemoveSignal(ch)
	close(ch)
	time.Sleep(5 * time.Second)
}