if aField.Name != bField.Name {
				fatalTypeError(t, path, a, b, fmt.Sprintf("mismatched field name %d: %s %s", i, aField.Name, bField.Name))
			}
			if aField.Offset != bField.Offset {
				fatalTypeError(t, path, a, b, fmt.Sprintf("mismatched field offset %d: %v %v", i, aField.Offset, bField.Offset))
			}
			if aField.Anonymous != bField.Anonymous {