1// RUN: %clang_cc1 -fsyntax-only -verify %s 2// expected-no-diagnostics 3 4@interface MessageStore 5@property (assign, readonly) int P; 6@end 7 8@interface MessageStore (CAT) 9@property (assign) int P; 10@end 11 12@interface NeXTMbox : MessageStore 13@end 14 15@implementation NeXTMbox 16- (void) Meth { self.P = 1; } 17@end 18 19