// It's not a method; must be a field of a struct or an element of a map.
	switch receiver.Kind() {
	case reflect.Struct:
		tField, ok := receiver.Type().FieldByName(fieldName)
		if ok {
			field, err := receiver.FieldByIndexErr(tField.Index)
			if !tField.IsExported() {
				s.errorf("%s is an unexported field of struct type %s", fieldName, typ)
			}
			if err != nil {
				s.errorf("%v", err)
			}

				v = v.Elem()
			}
		}
		v = v.Field(x)
	}
	return v
}

// FieldByIndexErr returns the nested field corresponding to index.
// It returns an error if evaluation requires stepping through a nil
// pointer, but panics if it must step through a field that
// is not a struct.
func (v Value) FieldByIndexErr(index []int) (Value, error) {
	if len(index) == 1 {
		return v.Field(index[0]), nil
	}

				if err != nil {
					t.Error(err)
				}
			}
		}()
	}

	wg.Wait()
}

// Issue 48215: embedded nil pointer causes panic.
// Fixed by adding FieldByIndexErr to the reflect package.
func TestIssue48215(t *testing.T) {
	type A struct {
		S string
	}
	type B struct {
		*A
	}
	tmpl, err := New("").Parse(`{{ .S }}`)
	if err != nil {