1 // RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s 2 3 #define nil (void *)0; 4 5 extern void foo(); 6 7 @protocol MyProtocol 8 - (void) method; 9 @end 10 11 @interface MyClass 12 @end 13 14 @interface MyClass (Addition) <MyProtocol> 15 - (void) method; 16 @end 17 18 @interface MyOtherClass : MyClass 19 @end 20 21 int main() 22 { 23 id <MyProtocol> obj_id_p = nil; 24 MyClass *obj_c_cat_p = nil; 25 MyOtherClass *obj_c_super_p = nil; 26 MyOtherClass<MyProtocol> *obj_c_super_p_q = nil; 27 MyClass<MyProtocol> *obj_c_cat_p_q = nil; 28 29 obj_c_cat_p = obj_id_p; 30 obj_c_super_p = obj_id_p; 31 obj_id_p = obj_c_cat_p; /* Ok */ 32 obj_id_p = obj_c_super_p; /* Ok */ 33 34 if (obj_c_cat_p == obj_id_p) foo(); /* Ok */ 35 if (obj_c_super_p == obj_id_p) foo() ; /* Ok */ 36 if (obj_id_p == obj_c_cat_p) foo(); /* Ok */ 37 if (obj_id_p == obj_c_super_p) foo(); /* Ok */ 38 39 obj_c_cat_p = obj_c_super_p; // ok. 40 obj_c_cat_p = obj_c_super_p_q; // ok. 41 obj_c_super_p = obj_c_cat_p_q; // expected-warning {{incompatible pointer types}} 42 obj_c_cat_p_q = obj_c_super_p; 43 return 0; 44 } 45
