},
	}
	defer p.fake.setLines() // set lines for files in fset

	for i, pt := range predeclared {
		p.typCache[uint64(i)] = pt
	}
	// Special handling for "any", whose representation may be changed by the
	// gotypesalias GODEBUG variable.
	p.typCache[uint64(len(predeclared))] = types.Universe.Lookup("any").Type()

	pkgList := make([]*types.Package, r.uint64())
	for i := range pkgList {

				w.string(subscript(t.id))
			}
			// If the type parameter name is the same as a predeclared object
			// (say int), point out where it is declared to avoid confusing
			// error messages. This doesn't need to be super-elegant; we just
			// need a clear indication that this is not a predeclared name.
			if w.ctxt == nil && Universe.Lookup(t.obj.name) != nil {
				if isTypes2 {

				w.string(subscript(t.id))
			}
			// If the type parameter name is the same as a predeclared object
			// (say int), point out where it is declared to avoid confusing
			// error messages. This doesn't need to be super-elegant; we just
			// need a clear indication that this is not a predeclared name.
			if w.ctxt == nil && Universe.Lookup(t.obj.name) != nil {
				if isTypes2 {

)

func TestIsAlias(t *testing.T) {
	check := func(obj *TypeName, want bool) {
		if got := obj.IsAlias(); got != want {
			t.Errorf("%v: got IsAlias = %v; want %v", obj, got, want)
		}
	}

	// predeclared types
	check(Unsafe.Scope().Lookup("Pointer").(*TypeName), false)
	for _, name := range Universe.Names() {
		if obj, _ := Universe.Lookup(name).(*TypeName); obj != nil {

)

func TestIsAlias(t *testing.T) {
	check := func(obj *TypeName, want bool) {
		if got := obj.IsAlias(); got != want {
			t.Errorf("%v: got IsAlias = %v; want %v", obj, got, want)
		}
	}

	// predeclared types
	check(Unsafe.Scope().Lookup("Pointer").(*TypeName), false)
	for _, name := range Universe.Names() {
		if obj, _ := Universe.Lookup(name).(*TypeName); obj != nil {

](X0 TP0, X1 TP1, X2 TP2) {
	i = X0
	I = X0
	c = X1
	C = X1 // ERRORx `cannot use X1 .* as Chan value`
	c = X2 // ERRORx `.* cannot assign chan byte \(in TP2\) to (chan int|_Chan.*)`
}

// "x is the predeclared identifier nil and T is a pointer, function, slice, map, channel, or interface type"
func _[TP Interface](X TP) {
	b = nil // ERROR "cannot use nil"
	a = nil // ERROR "cannot use nil"
	l = nil

		}
		return
	case universeComparable:
		if !check.verifyVersionf(e, go1_18, "predeclared %s", e.Value) {
			return // avoid follow-on errors
		}
	}
	// Because the representation of any depends on gotypesalias, we don't check
	// pointer identity here.
	if obj.Name() == "any" && obj.Parent() == Universe {
		if !check.verifyVersionf(e, go1_18, "predeclared %s", e.Value) {
			return // avoid follow-on errors
		}
	}

var Types [NTYPE]*Type

var (
	// Predeclared alias types. These are actually created as distinct
	// defined types for better error messages, but are then specially
	// treated as identical to their respective underlying types.
	AnyType  *Type
	ByteType *Type
	RuneType *Type

	// Predeclared error interface type.
	ErrorType *Type
	// Predeclared comparable interface type.
	ComparableType *Type

		}
		return
	case universeComparable:
		if !check.verifyVersionf(e, go1_18, "predeclared %s", e.Name) {
			return // avoid follow-on errors
		}
	}
	// Because the representation of any depends on gotypesalias, we don't check
	// pointer identity here.
	if obj.Name() == "any" && obj.Parent() == Universe {
		if !check.verifyVersionf(e, go1_18, "predeclared %s", e.Name) {
			return // avoid follow-on errors
		}
	}

<code>real</code> and <code>imag</code> applied to a complex constant
and <code>complex</code> applied to numeric constants.
The boolean truth values are represented by the predeclared constants
<code>true</code> and <code>false</code>. The predeclared identifier
<a href="#Iota">iota</a> denotes an integer constant.
</p>

<p>
In general, complex constants are a form of
<a href="#Constant_expressions">constant expression</a>