defer func() {
		err := recover()
		if err == nil {
			panic("expected panic")
		}
		if got := err.(error).Error(); got != s {
			panic("expected panic " + s + " got " + got)
		}
	}()
	fn()
}

func main() {
	s := make([]byte, 8, 10)
	for i := range s {
		s[i] = byte(i)
	}
	if p := (*[8]byte)(s); &p[0] != &s[0] {
		panic("*[8]byte conversion failed")
	}
	if [8]byte(s) != *(*[8]byte)(s) {

		cs := make(chan string, buffer)

		select {
		case i32 = <-c32:
			panic("blocked i32sender")
		default:
		}

		select {
		case i64 = <-c64:
			panic("blocked i64sender")
		default:
		}

		select {
		case b = <-cb:
			panic("blocked bsender")
		default:
		}

		select {
		case s = <-cs:
			panic("blocked ssender")
		default:
		}

		go i32receiver(c32, sync)

	a1 := []int{1, 2, 3}
	if len(a1) != 3 {
		panic("a1")
	}
	a2 := [10]int{1, 2, 3}
	if len(a2) != 10 || cap(a2) != 10 {
		panic("a2")
	}

	a3 := [10]int{1, 2, 3}
	if len(a3) != 10 || a2[3] != 0 {
		panic("a3")
	}

	var oai []int
	oai = []int{1, 2, 3}
	if len(oai) != 3 {
		panic("oai")
	}

	at := [...]*T{&t, tp, &t}
	if len(at) != 3 {
		panic("at")
	}

	c := make(chan int)

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

	if !_Equal(s3, s3) {
		panic(fmt.Sprintf("_Equal(%v, %v) = false, want true", s3, s3))
	}

	if _Equal(s1, nil) {
		panic(fmt.Sprintf("_Equal(%v, nil) = true, want false", s1))
	}
	if _Equal(nil, s1) {
		panic(fmt.Sprintf("_Equal(nil, %v) = true, want false", s1))
	}
	if !_Equal(s1[:0], nil) {
		panic(fmt.Sprintf("_Equal(%v, nil = false, want true", s1[:0]))
	}
}

func offByOne[Elem Integer](a, b Elem) bool {

		runtime.Goexit() // left stack-allocated Panic struct on gp->panic stack
	}()
	panic("p")
}

func f2(done chan bool) {
	defer func() {
		recover()
		done <- true
		runtime.Goexit()
	}()
	time.Sleep(10 * time.Millisecond) // overwrote Panic struct with Timer struct
	runtime.GC()                      // walked gp->panic list, found mangled Panic struct, crashed
	panic("p")

	if debug {
		println(s)
	}
	if strings.Contains(s, "autogenerated") {
		panic("autogenerated code in traceback")
	}
	if !strings.Contains(s, "a.go:15") {
		panic("missing a.go:15")
	}
	if !strings.Contains(s, "a.go:19") {
		panic("missing a.go:19")
	}
	if !strings.Contains(s, "a.init") {
		panic("missing a.init")
	}

	// Check the CallersFrames results.
	if debug {

func stfle() facilityList     { panic("not implemented for gccgo") }
func kmQuery() queryResult    { panic("not implemented for gccgo") }
func kmcQuery() queryResult   { panic("not implemented for gccgo") }
func kmctrQuery() queryResult { panic("not implemented for gccgo") }
func kmaQuery() queryResult   { panic("not implemented for gccgo") }
func kimdQuery() queryResult  { panic("not implemented for gccgo") }

	// call structure
	if s.f() != 5 { panic(11); }
	if s.g() != 6 { panic(12); }

	i1 = s;		// convert S to I1
	i2 = i1.(I2);	// convert I1 to I2

	// call interface
	if i1.f() != 5 { panic(21); }
	if i2.f() != 5 { panic(22); }
	if i2.g() != 6 { panic(23); }

	g = i1.(*S);		// convert I1 to S
	if g != s { panic(31); }

	g = i2.(*S);		// convert I2 to S
	if g != s { panic(32); }

	a.Set(&v1, 1)
	if got, want := a.Get(&v1), 1; got != want {
		panic(fmt.Sprintf("Get() == %d, want %d", got, want))
	}
	v1.Set(2)
	if got, want := v1.Get(), 2; got != want {
		panic(fmt.Sprintf("Get() == %d, want %d", got, want))
	}
	v1p := new(a.Value[int])
	a.Set(v1p, 3)
	if got, want := a.Get(v1p), 3; got != want {
		panic(fmt.Sprintf("Get() == %d, want %d", got, want))
	}

	v1p.Set(4)