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1// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s2 3@protocol NSObject4@end5@interface NSObject <NSObject> {6}7@end8@interface NSString : NSObject9@end10void __setRetained(id *ivar, id value, NSObject **o) {11 *ivar = value;12}13static NSString *_logProcessPrefix = 0;14void func(void) {15 __setRetained(&_logProcessPrefix, _logProcessPrefix, &_logProcessPrefix);16}17@implementation NSObject (ScopeAdditions)18+ (void)setObjectLogProcessPrefix:(NSString *)processPrefix {19 __setRetained(&_logProcessPrefix, processPrefix, &_logProcessPrefix);20}21@end22 23@class Derived;24 25NSObject *ExternFunc (NSObject *filePath, NSObject *key);26typedef id FuncSignature (NSObject *arg1, Derived *arg2);27 28@interface Derived: NSObject29+ (void)registerFunc:(FuncSignature *)function; // expected-note{{passing argument to parameter 'function' here}}30@end31 32void foo(void)33{34 // GCC currently allows this (it has some fairly 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-error{{incompatible function pointer types sending 'NSObject *(NSObject *, NSObject *)' to parameter of type 'FuncSignature *' (aka 'id (*)(NSObject *, Derived *)')}}37}38 39@protocol NSCopying @end40@interface I41- (void) Meth : (id <NSCopying>)aKey; // expected-note {{passing argument to parameter 'aKey' here}}42@end43 44@class ForwarClass; // expected-note 3 {{conformance of forward class 'ForwarClass' to protocol 'NSCopying' cannot be confirmed}}45 46ForwarClass *Test10751015 (I* pi, ForwarClass *ns_forward) {47 48 [pi Meth : ns_forward ]; // expected-warning {{sending 'ForwarClass *' to parameter of incompatible type 'id<NSCopying>'}}49 50 id <NSCopying> id_ns = ns_forward; // expected-warning {{initializing 'id<NSCopying>' with an expression of incompatible type 'ForwarClass *'}}51 52 return id_ns; // expected-warning {{returning 'id<NSCopying>' from a function with incompatible result type 'ForwarClass *'}}53}54