"time"
	_ "unsafe" // for go:linkname
)

// The bug is that netpollWaiters increases monotonically.
// This doesn't cause a problem until it overflows.
// Use linkname to see the value.
//
//go:linkname netpollWaiters runtime.netpollWaiters
var netpollWaiters atomic.Uint32

func init() {
	register("NetpollWaiters", NetpollWaiters)
}

func NetpollWaiters() {
	listener, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {

}

var (
	netpollInitLock mutex
	netpollInited   atomic.Uint32

	pollcache      pollCache
	netpollWaiters atomic.Uint32
)

// netpollWaiters is accessed in tests
//go:linkname netpollWaiters

//go:linkname poll_runtime_pollServerInit internal/poll.runtime_pollServerInit
func poll_runtime_pollServerInit() {
	netpollGenericInit()
}

	if !strings.Contains(output, want) {
		t.Errorf("output does not contain %q:\n%s", want, output)
	}
}

func TestNetpollWaiters(t *testing.T) {
	t.Parallel()
	output := runTestProg(t, "testprognet", "NetpollWaiters")
	want := "OK\n"
	if output != want {
		t.Fatalf("output is not %q\n%s", want, output)
	}