return l
}

//go:nosplit
func (l *dlogger) p(x any) *dlogger {
	if !dlogEnabled {
		return l
	}
	l.w.byte(debugLogPtr)
	if x == nil {
		l.w.uvarint(0)
	} else {
		v := efaceOf(&x)
		switch v._type.Kind_ & abi.KindMask {
		case abi.Chan, abi.Func, abi.Map, abi.Pointer, abi.UnsafePointer:
			l.w.uvarint(uint64(uintptr(v.data)))
		default:
			throw("not a pointer type")
		}
	}

// complications with instrumentation (coverage, etc).
func mapinitnoop()

// mapclone for implementing maps.Clone
//
//go:linkname mapclone maps.clone
func mapclone(m any) any {
	e := efaceOf(&m)
	e.data = unsafe.Pointer(mapclone2((*maptype)(unsafe.Pointer(e._type)), (*hmap)(e.data)))
	return m
}

// must be stored in interfaces indirectly. See issue 42076.
func (pd *pollDesc) makeArg() (i any) {
	x := (*eface)(unsafe.Pointer(&i))
	x._type = pdType
	x.data = unsafe.Pointer(&pd.self)
	return
}

var (
	pdEface any    = (*pollDesc)(nil)
	pdType  *_type = efaceOf(&pdEface)._type

type funcval struct {
	fn uintptr
	// variable-size, fn-specific data here
}

type iface struct {
	tab  *itab
	data unsafe.Pointer
}

type eface struct {
	_type *_type
	data  unsafe.Pointer
}

func efaceOf(ep *any) *eface {
	return (*eface)(unsafe.Pointer(ep))
}

// The guintptr, muintptr, and puintptr are all used to bypass write barriers.

func (t *timer) hchan() *hchan {
	if !t.isChan {
		badTimer()
	}
	// Note: t.arg is a chan time.Time,
	// and runtime cannot refer to that type,
	// so we cannot use a type assertion.
	return (*hchan)(efaceOf(&t.arg).data)
}

// updateHeap updates t as directed by t.state, updating t.state
// and returning a bool indicating whether the state (and ts.heap[0].when) changed.

		text := "panic while printing panic value"
		switch r := recover().(type) {
		case nil:
			// nothing to do
		case string:
			throw(text + ": " + r)
		default:
			throw(text + ": type " + toRType(efaceOf(&r)._type).string())
		}
	}()
	for p != nil {
		switch v := p.arg.(type) {
		case error:
			p.arg = v.Error()
		case stringer:
			p.arg = v.String()
		}
		p = p.link
	}
}

type UserArena struct {
	arena *userArena
}

func NewUserArena() *UserArena {
	return &UserArena{newUserArena()}
}

func (a *UserArena) New(out *any) {
	i := efaceOf(out)
	typ := i._type
	if typ.Kind_&abi.KindMask != abi.Pointer {
		panic("new result of non-ptr type")
	}
	typ = (*ptrtype)(unsafe.Pointer(typ)).Elem
	i.data = a.arena.new(typ)
}

// If ep points to the stack, only static live information will be returned
// (i.e. not for objects which are only dynamically live stack objects).
func getgcmask(ep any) (mask []byte) {
	e := *efaceOf(&ep)
	p := e.data
	t := e._type

	var et *_type
	if t.Kind_&abi.KindMask != abi.Pointer {
		throw("bad argument to getgcmask: expected type to be a pointer to the value type whose mask is being queried")

	deep interface{} = [1]struct{ a *[2]byte }{{a: &[2]byte{'z', 'w'}}}
	ch   interface{} = make(chan bool, 1)
)

func main() {
	var fail bool
	for i, test := range efaces {
		s := fmt.Sprintf("%[1]T %[1]v", test.x)
		if s != test.s {
			fmt.Printf("eface(%d)=%q want %q\n", i, s, test.s)
			fail = true
		}
	}

	for i, test := range ifaces {
		s := fmt.Sprintf("%[1]T %#[1]v %[1]s", test.x)
		if s != test.s {

	x := *(*iface)(p)
	y := *(*iface)(q)
	return x.tab == y.tab && ifaceeq(x.tab, x.data, y.data)
}
func nilinterequal(p, q unsafe.Pointer) bool {
	x := *(*eface)(p)
	y := *(*eface)(q)
	return x._type == y._type && efaceeq(x._type, x.data, y.data)
}
func efaceeq(t *_type, x, y unsafe.Pointer) bool {
	if t == nil {
		return true
	}
	eq := t.Equal
	if eq == nil {