| #define NS_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer)) | |
| @class NSString; | |
| @interface B1 | |
| -(instancetype)init; | |
| @end | |
| @interface S1 : B1 | |
| @property (nonatomic) int prop; | |
| +(instancetype)s1; | |
| -(instancetype)initWithFoo:(NSString*)foo NS_DESIGNATED_INITIALIZER; | |
| @end |