1acfbe9e1SPatrick Beard// RUN: %clang_cc1 -verify -Wno-objc-root-class %s 2*c6e68daaSAndy Gibbs// expected-no-diagnostics 389026888SChris Lattner 489026888SChris Lattner@protocol MyProto1 589026888SChris Lattner@optional 689026888SChris Lattner- (void) FOO; 789026888SChris Lattner@optional 8c17c86b5SFariborz Jahanian- (void) FOO1; 989026888SChris Lattner@optional 1089026888SChris Lattner- (void) REQ; 1189026888SChris Lattner@optional 1289026888SChris Lattner@end 1389026888SChris Lattner 1489026888SChris Lattner@interface MyProto2 <MyProto1> 1589026888SChris Lattner- (void) FOO2; 1689026888SChris Lattner- (void) FOO3; 1789026888SChris Lattner@end 1889026888SChris Lattner 1989026888SChris Lattner@implementation MyProto2 2089026888SChris Lattner- (void) FOO2{} 2189026888SChris Lattner- (void) FOO3{} 2289026888SChris Lattner@end 23