1// RUN: %clang_cc1 -fsyntax-only -verify %s 2 3@interface MessageStore 4@property (assign, readonly) int P; 5@end 6 7@interface MessageStore (CAT) 8@property (assign) int P; 9@end 10 11@interface NeXTMbox : MessageStore 12@end 13 14@implementation NeXTMbox 15- (void) Meth { self.P = 1; } 16@end 17 18