1 // RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s 2 3 @protocol NSObject 4 @end 5 @interface NSObject <NSObject> { 6 } 7 @end 8 @interface NSString : NSObject 9 @end 10 void __setRetained(id *ivar, id value, NSObject **o) { 11 *ivar = value; 12 } 13 static NSString *_logProcessPrefix = 0; 14 void func() { 15 __setRetained(&_logProcessPrefix, _logProcessPrefix, &_logProcessPrefix); 16 } 17 @implementation NSObject (ScopeAdditions) 18 + (void)setObjectLogProcessPrefix:(NSString *)processPrefix { 19 __setRetained(&_logProcessPrefix, processPrefix, &_logProcessPrefix); 20 } 21 @end 22 23 @class Derived; 24 25 NSObject *ExternFunc (NSObject *filePath, NSObject *key); 26 typedef id FuncSignature (NSObject *arg1, Derived *arg2); 27 28 @interface Derived: NSObject 29 + (void)registerFunc:(FuncSignature *)function; // expected-note{{passing argument to parameter 'function' here}} 30 @end 31 32 void foo(void) 33 { 34 // GCC currently allows this (it has some fiarly new support for covariant return types and contravariant argument types). 35 // Since registerFunc: expects a Derived object as it's second argument, I don't know why this would be legal. 36 [Derived registerFunc: ExternFunc]; // expected-warning{{incompatible pointer types sending 'NSObject *(NSObject *, NSObject *)' to parameter of type 'FuncSignature *'}} 37 } 38 39 // rdar://10751015 40 @protocol NSCopying @end 41 @interface I 42 - (void) Meth : (id <NSCopying>)aKey; // expected-note {{passing argument to parameter 'aKey' here}} 43 @end 44 45 @class ForwarClass; // expected-note 3 {{conformance of forward class ForwarClass to protocol NSCopying can not be confirmed}} 46 47 ForwarClass *Test10751015 (I* pi, ForwarClass *ns_forward) { 48 49 [pi Meth : ns_forward ]; // expected-warning {{sending 'ForwarClass *' to parameter of incompatible type 'id<NSCopying>'}} 50 51 id <NSCopying> id_ns = ns_forward; // expected-warning {{initializing 'id<NSCopying>' with an expression of incompatible type 'ForwarClass *'}} 52 53 return id_ns; // expected-warning {{returning 'id<NSCopying>' from a function with incompatible result type 'ForwarClass *'}} 54 } 55
