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 {