return *(*string)(p) == *(*string)(q)
}
func interequal(p, q unsafe.Pointer) bool {
	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 level > 10 {
		t.Errorf("%s: embeds itself", named)
		return
	}

	iface, _ := named.Underlying().(*types.Interface)
	if iface == nil {
		return // not an interface
	}

	// check explicitly declared methods
	for i := 0; i < iface.NumExplicitMethods(); i++ {
		m := iface.ExplicitMethod(i)
		recv := m.Type().(*types.Signature).Recv()
		if recv == nil {

}

func TestUniqueTypesAndItabs(t *testing.T) {
	globalSkip(t)
	goCmd(t, "build", "-buildmode=plugin", "./iface_a")
	goCmd(t, "build", "-buildmode=plugin", "./iface_b")
	goCmd(t, "build", "-o", "iface.exe", "./iface")
	run(t, "./iface.exe")
}

func TestIssue18676(t *testing.T) {
	// make sure we don't add the same itab twice.
	// The buggy code hangs forever, so use a timeout to check for that.
	globalSkip(t)

	ct(reflect.TypeOf(toy{}), toy{0, 1}, toy{0, 2}, toy{1, -1}, toy{1, 1}),
	ct(reflect.TypeOf([2]int{}), [2]int{1, 1}, [2]int{1, 2}, [2]int{2, 0}),
	ct(reflect.TypeOf(any(0)), iFace, 1, 2, 3),
}

var iFace any

func ct(typ reflect.Type, args ...any) []reflect.Value {
	value := make([]reflect.Value, len(args))
	for i, v := range args {
		x := reflect.ValueOf(v)
		if !x.IsValid() { // Make it a typed nil.

// computed yet.
func hasEmptyTypeset(t Type) bool {
	if tpar, _ := Unalias(t).(*TypeParam); tpar != nil && tpar.bound != nil {
		iface, _ := safeUnderlying(tpar.bound).(*Interface)
		return iface != nil && iface.tset != nil && iface.tset.IsEmpty()
	}
	return false
}

// isGeneric reports whether a type is a generic, uninstantiated type
// (generic signatures are not included).

// computed yet.
func hasEmptyTypeset(t Type) bool {
	if tpar, _ := Unalias(t).(*TypeParam); tpar != nil && tpar.bound != nil {
		iface, _ := safeUnderlying(tpar.bound).(*Interface)
		return iface != nil && iface.tset != nil && iface.tset.IsEmpty()
	}
	return false
}

// isGeneric reports whether a type is a generic, uninstantiated type
// (generic signatures are not included).

	// Find IP addr of excluded interfaces and add to a map for instant lookup
	for _, ifaceName := range exclusions {
		iface, err := net.InterfaceByName(ifaceName)
		if err != nil {
			log.Warnf("Unable to get interface %s: %v", ifaceName, err)
			continue
		}
		addrs, err := iface.Addrs()
		if err != nil {
			log.Warnf("Unable to get IP addr(s) of interface %s: %v", ifaceName, err)
			continue
		}

func convTslice(val []uint8) unsafe.Pointer

// interface type assertions x.(T)
func assertE2I(inter *byte, typ *byte) *byte
func assertE2I2(inter *byte, typ *byte) *byte
func panicdottypeE(have, want, iface *byte)
func panicdottypeI(have, want, iface *byte)
func panicnildottype(want *byte)
func typeAssert(s *byte, typ *byte) *byte

// interface switches
func interfaceSwitch(s *byte, t *byte) (int, *byte)

	smap := makeSubstMap(tparams, targs)
	for i, tpar := range tparams {
		// Ensure that we have a (possibly implicit) interface as type bound (go.dev/issue/51048).
		tpar.iface()
		// The type parameter bound is parameterized with the same type parameters
		// as the instantiated type; before we can use it for bounds checking we

			}
		}
		if obj == nil {
			t.Fatal("object X not found")
		}
		iface := obj.Type().Underlying().(*Interface) // object X must be an interface

		// Each iface method m is embedded; and m's receiver base type name
		// must match the method's name per the choice in the source file.
		for i := 0; i < iface.NumMethods(); i++ {
			m := iface.Method(i)
			recvName := m.Type().(*Signature).Recv().Type().(*Named).Obj().Name()