func (r *reader) cleanupTypes() {
	for _, t := range r.types {
		visible := r.isVisible(t.name)
		predeclared := predeclaredTypes[t.name]

		if t.decl == nil && (predeclared || visible && (t.isEmbedded || r.hasDotImp)) {
			// t.name is a predeclared type (and was not redeclared in this package),
			// or it was embedded somewhere but its declaration is missing (because

//         Implicit   bool
//         Constraint typeOff
//     }
//
// typeOff means a uvarint that either indicates a predeclared type,
// or an offset into the Data section. If the uvarint is less than
// predeclReserved, then it indicates the index into the predeclared
// types list (see predeclared in bexport.go for order). Otherwise,
// subtracting predeclReserved yields the offset of a type descriptor.
//

	// All Objects have a package, except predeclared ones.
	errorError := Universe.Lookup("error").Type().Underlying().(*Interface).ExplicitMethod(0) // (error).Error
	for id, obj := range info.Uses {
		predeclared := obj == Universe.Lookup(obj.Name()) || obj == errorError
		if predeclared == (obj.Pkg() != nil) {
			posn := fset.Position(id.Pos())
			if predeclared {

	// All Objects have a package, except predeclared ones.
	errorError := Universe.Lookup("error").Type().Underlying().(*Interface).ExplicitMethod(0) // (error).Error
	for id, obj := range info.Uses {
		predeclared := obj == Universe.Lookup(obj.Name()) || obj == errorError
		if predeclared == (obj.Pkg() != nil) {
			posn := id.Pos()
			if predeclared {
				return nil, fmt.Errorf("%s: predeclared object with package: %s", posn, obj)

		return types.RecvOnly
	case 2 /* Csend */ :
		return types.SendOnly
	case 3 /* Cboth */ :
		return types.SendRecv
	default:
		errorf("unexpected channel dir %d", d)
		return 0
	}
}

var predeclared = []types.Type{
	// basic types
	types.Typ[types.Bool],
	types.Typ[types.Int],
	types.Typ[types.Int8],
	types.Typ[types.Int16],
	types.Typ[types.Int32],
	types.Typ[types.Int64],
	types.Typ[types.Uint],

// license that can be found in the LICENSE file.

// This file sets up the universe scope and the unsafe package.

package types2

import (
	"go/constant"
	"strings"
)

// The Universe scope contains all predeclared objects of Go.
// It is the outermost scope of any chain of nested scopes.
var Universe *Scope

// The Unsafe package is the package returned by an importer
// for the import path "unsafe".
var Unsafe *Package

// license that can be found in the LICENSE file.

// This file sets up the universe scope and the unsafe package.

package types

import (
	"go/constant"
	"strings"
)

// The Universe scope contains all predeclared objects of Go.
// It is the outermost scope of any chain of nested scopes.
var Universe *Scope

// The Unsafe package is the package returned by an importer
// for the import path "unsafe".
var Unsafe *Package

// license that can be found in the LICENSE file.

package types

// BasicKind describes the kind of basic type.
type BasicKind int

const (
	Invalid BasicKind = iota // type is invalid

	// predeclared types
	Bool
	Int
	Int8
	Int16
	Int32
	Int64
	Uint
	Uint8
	Uint16
	Uint32
	Uint64
	Uintptr
	Float32
	Float64
	Complex64
	Complex128
	String
	UnsafePointer

		*syntax.AssignStmt, *syntax.CallStmt:
		// no chance

	case *syntax.LabeledStmt:
		return check.isTerminating(s.Stmt, s.Label.Value)

	case *syntax.ExprStmt:
		// calling the predeclared (possibly parenthesized) panic() function is terminating
		if call, ok := syntax.Unparen(s.X).(*syntax.CallExpr); ok && check.isPanic[call] {
			return true
		}

	case *syntax.ReturnStmt:
		return true

		*ast.RangeStmt:
		// no chance

	case *ast.LabeledStmt:
		return check.isTerminating(s.Stmt, s.Label.Name)

	case *ast.ExprStmt:
		// calling the predeclared (possibly parenthesized) panic() function is terminating
		if call, ok := ast.Unparen(s.X).(*ast.CallExpr); ok && check.isPanic[call] {
			return true
		}

	case *ast.ReturnStmt:
		return true