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
