throw("invalid g status")

		case _Gdead:
			// Nothing to suspend.
			//
			// preemptStop may need to be cleared, but
			// doing that here could race with goroutine
			// reuse. Instead, goexit0 clears it.
			return suspendGState{dead: true}

		case _Gcopystack:
			// The stack is being copied. We need to wait
			// until this is done.

		case _Gpreempted:

	return func(yield func(int) bool) {
		runtime.Goexit()
	}
}

func goexitCleanupSeq() Seq[int] {
	return func(yield func(int) bool) {
		for {
			if !yield(55) {
				runtime.Goexit()
			}
		}
	}
}

func TestPull2Goexit(t *testing.T) {
	t.Run("next", func(t *testing.T) {
		var next func() (int, int, bool)
		var stop func()
		if !goexits(t, func() {
			next, stop = Pull2(goexitSeq2())

	schedule()
}

// Finishes execution of the current goroutine.
func goexit1() {
	if raceenabled {
		racegoend()
	}
	trace := traceAcquire()
	if trace.ok() {
		trace.GoEnd()
		traceRelease(trace)
	}
	mcall(goexit0)
}

// goexit continuation on g0.
func goexit0(gp *g) {
	gdestroy(gp)
	schedule()
}

func gdestroy(gp *g) {
	mp := getg().m

			// Propagate panics and goexits from seq.
			if panicValue != nil {
				if panicValue == goexitPanicValue {
					// Propagate runtime.Goexit from seq.
					runtime.Goexit()
				} else {
					panic(panicValue)
				}
			}
		}
	}
	return next, stop
}

// goexitPanicValue is a sentinel value indicating that an iterator
// exited via runtime.Goexit.

type neverCallThisFunction struct{}

// goexit is the return stub at the top of every goroutine call stack.
// Each goroutine stack is constructed as if goexit called the
// goroutine's entry point function, so that when the entry point
// function returns, it will return to goexit, which will call goexit1
// to perform the actual exit.
//
// This function must never be called directly. Call goexit1 instead.

// If all other goroutines exit, the program crashes.
func Goexit() {
	// Create a panic object for Goexit, so we can recognize when it might be
	// bypassed by a recover().
	var p _panic
	p.goexit = true

	p.start(getcallerpc(), unsafe.Pointer(getcallersp()))
	for {
		fn, ok := p.nextDefer()
		if !ok {
			break
		}
		fn()
	}

	goexit1()
}

	testCases := []struct {
		desc  string
		flags []string
		want  string
	}{
		{
			desc:  "Issue 48502: call runtime.Goexit in t.Cleanup after panic",
			flags: []string{"-test.run=^TestGoexitInCleanupAfterPanicHelper$"},
			want: `panic: die
	panic: test executed panic(nil) or runtime.Goexit`,
		},
		{
			desc:  "Issue 48515: call t.Run in t.Cleanup should trigger panic",

	"corostart":          abi.FuncID_corostart,
	"debugCallV2":        abi.FuncID_debugCallV2,
	"gcBgMarkWorker":     abi.FuncID_gcBgMarkWorker,
	"rt0_go":             abi.FuncID_rt0_go,
	"goexit":             abi.FuncID_goexit,
	"gogo":               abi.FuncID_gogo,
	"gopanic":            abi.FuncID_gopanic,
	"handleAsyncEvent":   abi.FuncID_handleAsyncEvent,
	"main":               abi.FuncID_runtime_main,

	want := "no goroutines (main called runtime.Goexit) - deadlock!"
	if !strings.Contains(output, want) {
		t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
	}
}

func TestGoexitDefer(t *testing.T) {
	c := make(chan struct{})
	go func() {
		defer func() {
			r := recover()
			if r != nil {
				t.Errorf("non-nil recover during Goexit")
			}
			c <- struct{}{}
		}()

			return
		}
		t.Fatalf("%s: want nil panic, got %v", label, p)
	})
}

func TestOnceFuncGoexit(t *testing.T) {
	// If f calls Goexit, the results are unspecified. But check that f doesn't
	// get called twice.
	calls := 0
	f := sync.OnceFunc(func() {
		calls++
		runtime.Goexit()
	})
	var wg sync.WaitGroup
	for i := 0; i < 2; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()