1 // RUN: %clang_cc1 -emit-pch %s -o %t 2 // RUN: %clang_cc1 -include-pch %t -verify %s 3 4 #ifndef HEADER_INCLUDED 5 6 #define HEADER_INCLUDED 7 8 @protocol NSObject 9 @end 10 11 __attribute__((objc_root_class)) 12 @interface NSObject 13 @end 14 15 @interface PC1<__covariant T, U : NSObject *> : NSObject 16 // expected-note@-2{{type parameter 'U' declared here}} 17 @end 18 19 @interface PC1<__covariant T, U : NSObject *> (Cat1) 20 @end 21 22 typedef PC1<id, NSObject *> PC1Specialization1; 23 24 typedef PC1Specialization1 <NSObject> PC1Specialization2; 25 #else 26 27 @interface PC1<T : NSObject *, // expected-error{{type bound 'NSObject *' for type parameter 'T' conflicts with implicit bound 'id}} 28 // expected-note@15{{type parameter 'T' declared here}} 29 U : id> (Cat2) // expected-error{{type bound 'id' for type parameter 'U' conflicts with previous bound 'NSObject *'}} 30 // expected-note@15{{type parameter 'U' declared here}} 31 @end 32 33 typedef PC1Specialization1<id, NSObject *> PC1Specialization3; // expected-error{{type arguments cannot be applied to already-specialized class type 'PC1Specialization1' (aka 'PC1<id,NSObject *>')}} 34 35 typedef PC1Specialization2<id, NSObject *> PC1Specialization4; // expected-error{{already-specialized class type 'PC1Specialization2' (aka 'PC1Specialization1<NSObject>')}} 36 37 @interface NSString : NSObject 38 @end 39 40 void testCovariance(PC1<NSObject *, NSObject *> *pc1a, 41 PC1<NSString *, NSObject *> *pc1b) { 42 pc1a = pc1b; 43 } 44 45 #endif 46
