fix.Entry[i].Author.InnerXML = ""
				}
			}

			if err != nil {
				if test.UnmarshalError == "" {
					t.Errorf("unmarshal(%#v): %s", test.ExpectXML, err)
					return
				}
				if !strings.Contains(err.Error(), test.UnmarshalError) {
					t.Errorf("unmarshal(%#v): %s, want %q", test.ExpectXML, err, test.UnmarshalError)
				}
				return
			}

	}

	if val.IsNil() {
		return errors.New("nil pointer passed to Unmarshal")
	}
	return d.unmarshal(val.Elem(), start, 0)
}

// An UnmarshalError represents an error in the unmarshaling process.
type UnmarshalError string

func (e UnmarshalError) Error() string { return string(e) }

// Unmarshaler is the interface implemented by objects that can unmarshal
// an XML element description of themselves.
//

func (l *ObjectLegalHold) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
	switch start.Name.Local {
	case "LegalHold", "ObjectLockLegalHold":
	default:
		return xml.UnmarshalError(fmt.Sprintf("expected element type <LegalHold>/<ObjectLockLegalHold> but have <%s>",
			start.Name.Local))
	}
	for {
		// Read tokens from the XML document in a stream.
		t, err := d.Token()
		if err != nil {

func (lc *Lifecycle) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
	switch start.Name.Local {
	case "LifecycleConfiguration", "BucketLifecycleConfiguration":
	default:
		return xml.UnmarshalError(fmt.Sprintf("expected element type <LifecycleConfiguration>/<BucketLifecycleConfiguration> but have <%s>",
			start.Name.Local))
	}
	for {
		// Read tokens from the XML document in a stream.
		t, err := d.Token()

	}
}

func TestIssue20396(t *testing.T) {

	var attrError = UnmarshalError("XML syntax error on line 1: expected attribute name in element")

	testCases := []struct {
		s       string
		wantErr error
	}{
		{`<a:te:st xmlns:a="abcd"/>`, // Issue 20396
			UnmarshalError("XML syntax error on line 1: expected element name after <")},
		{`<a:te=st xmlns:a="abcd"/>`, attrError},

		{"(Comment).Copy", Method, 0},
		{"(Directive).Copy", Method, 0},
		{"(ProcInst).Copy", Method, 0},
		{"(StartElement).Copy", Method, 0},
		{"(StartElement).End", Method, 2},
		{"(UnmarshalError).Error", Method, 0},
		{"Attr", Type, 0},
		{"Attr.Name", Field, 0},
		{"Attr.Value", Field, 0},
		{"CharData", Type, 0},
		{"Comment", Type, 0},
		{"CopyToken", Func, 0},
		{"Decoder", Type, 0},

pkg encoding/xml, method (Directive) Copy() Directive
pkg encoding/xml, method (ProcInst) Copy() ProcInst
pkg encoding/xml, method (StartElement) Copy() StartElement
pkg encoding/xml, method (UnmarshalError) Error() string
pkg encoding/xml, type Attr struct
pkg encoding/xml, type Attr struct, Name Name
pkg encoding/xml, type Attr struct, Value string
pkg encoding/xml, type CharData []uint8