test/ARCMT/checking.m - third_party/swift-clang - Git at Google

 // RUN: %clang_cc1 -arcmt-check -verify -triple x86_64-apple-darwin10 -fblocks -Werror %s

 #if __has_feature(objc_arc)
 #define NS_AUTOMATED_REFCOUNT_UNAVAILABLE __attribute__((unavailable("not available in automatic reference counting mode")))
 #else
 #define NS_AUTOMATED_REFCOUNT_UNAVAILABLE
 #endif

 typedef const void * CFTypeRef;
 CFTypeRef CFBridgingRetain(id X);
 id CFBridgingRelease(CFTypeRef);

 typedef int BOOL;
 typedef unsigned NSUInteger;

 @protocol NSObject
 - (id)retain NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
 - (NSUInteger)retainCount NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
 - (oneway void)release NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
 - (id)autorelease NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
 @end

 @interface NSObject <NSObject> {}
 - (id)init;

 + (id)new;
 + (id)alloc;
 - (void)dealloc;

 - (void)finalize;

 - (id)copy;
 - (id)mutableCopy;
 @end

 typedef const struct __CFString * CFStringRef;
 extern const CFStringRef kUTTypePlainText;
 extern const CFStringRef kUTTypeRTF;
 @class NSString;
 @class A;

 struct UnsafeS {
   A *__unsafe_unretained unsafeObj;
 };

 @interface A : NSObject
 - (id)retain __attribute__((unavailable)); // expected-note {{'retain' has been explicitly marked unavailable here}}
 - (id)retainCount __attribute__((unavailable)); // expected-note {{'retainCount' has been explicitly marked unavailable here}}
 - (id)autorelease __attribute__((unavailable)); // expected-note 2 {{'autorelease' has been explicitly marked unavailable here}}
 - (id)init;
 - (oneway void)release;
 - (void)dealloc;
 -(void)test;
 -(id)delegate;
 @end

 @implementation A
 -(void)test {
   [super dealloc];
 }
 -(void)dealloc {
   [super dealloc];
 }

 - (id)retain { return self; } // expected-error {{ARC forbids implementation}}
 - (id)retainCount { return self; } // expected-error {{ARC forbids implementation}}
 - (id)autorelease { return self; } // expected-error {{ARC forbids implementation}}
 - (oneway void)release { } // expected-error {{ARC forbids implementation}}

 -(id)delegate { return self; }
 @end

 id global_foo;

 void test1(A *a, BOOL b, struct UnsafeS *unsafeS) {
   [[a delegate] release]; // expected-error {{it is not safe to remove 'retain' message on the result of a 'delegate' message; the object that was passed to 'setDelegate:' may not be properly retained}} \
                           // expected-error {{ARC forbids explicit message send}}
   [a.delegate release]; // expected-error {{it is not safe to remove 'retain' message on the result of a 'delegate' message; the object that was passed to 'setDelegate:' may not be properly retained}} \
                         // expected-error {{ARC forbids explicit message send}}
   [unsafeS->unsafeObj retain]; // expected-error {{it is not safe to remove 'retain' message on an __unsafe_unretained type}} \
                                // expected-error {{ARC forbids explicit message send}} \
                                // expected-error {{'retain' is unavailable}}
   id foo = [unsafeS->unsafeObj retain]; // no warning.
   [global_foo retain]; // expected-error {{it is not safe to remove 'retain' message on a global variable}} \
                        // expected-error {{ARC forbids explicit message send}}
   [global_foo release]; // expected-error {{it is not safe to remove 'release' message on a global variable}} \
                         // expected-error {{ARC forbids explicit message send}}
   [a dealloc];
   [a retain];
   [a retainCount]; // expected-error {{ARC forbids explicit message send of 'retainCount'}} \
                    // expected-error {{'retainCount' is unavailable}}
   [a release];
   [a autorelease]; // expected-error {{it is not safe to remove an unused 'autorelease' message; its receiver may be destroyed immediately}} \
                    // expected-error {{ARC forbids explicit message send}} \
                    // expected-error {{'autorelease' is unavailable}}
   [a autorelease]; // expected-error {{it is not safe to remove an unused 'autorelease' message; its receiver may be destroyed immediately}} \
                    // expected-error {{ARC forbids explicit message send}} \
                    // expected-error {{'autorelease' is unavailable}}
   a = 0;

   CFStringRef cfstr;
   NSString *str = (NSString *)cfstr; // expected-error {{cast of C pointer type 'CFStringRef' (aka 'const struct __CFString *') to Objective-C pointer type 'NSString *' requires a bridged cast}} \
   // expected-note {{use __bridge to convert directly (no change in ownership)}} \
   // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFStringRef' (aka 'const struct __CFString *') into ARC}} \
   str = (NSString *)kUTTypePlainText;
   str = b ? kUTTypeRTF : kUTTypePlainText;
   str = (NSString *)(b ? kUTTypeRTF : kUTTypePlainText);
   str = (NSString *)a; // no change.

   SEL s = @selector(retain);  // expected-error {{ARC forbids use of 'retain' in a @selector}}
   s = @selector(release); // expected-error {{ARC forbids use of 'release' in a @selector}}
   s = @selector(autorelease); // expected-error {{ARC forbids use of 'autorelease' in a @selector}}
   s = @selector(dealloc); // expected-error {{ARC forbids use of 'dealloc' in a @selector}}

   static id __autoreleasing X1; // expected-error {{global variables cannot have __autoreleasing ownership}}
 }

 struct S {
   A* a; // expected-error {{ARC forbids Objective-C objects in struct}}
 };

 @interface B
 -(id)alloc;
 - (id)initWithInt: (int) i;
 @end

 void rdar8861761() {
   B *o1 = [[B alloc] initWithInt:0];
   B *o2 = [B alloc];
   [o2 initWithInt:0];
 }

 @interface Test13
 - (id) init0;
 - (void) noninit;
 @end
 @implementation Test13
 - (id) init0 {
   self = 0;
 }
 - (void) noninit {
   self = 0; // expected-error {{cannot assign to 'self' outside of a method in the init family}}

   for (__strong id x in collection) { // expected-error {{use of undeclared identifier 'collection'}}
     x = 0;
   }
 }
 @end

 void * cvt(id arg)
 {
   void* voidp_val;
   (void)(int*)arg; // expected-error {{disallowed}}
   (void)(id)arg;
   (void)(__autoreleasing id*)arg; // expected-error {{disallowed}}
   (void)(id*)arg; // expected-error {{disallowed}}

   (void)(__autoreleasing id**)voidp_val;
   (void)(void*)voidp_val;
   (void)(void**)arg; // expected-error {{disallowed}}
   cvt((void*)arg); // expected-error 2 {{requires a bridged cast}} \
                    // expected-note 2 {{use __bridge to}} expected-note {{use CFBridgingRelease call}} expected-note {{use CFBridgingRetain call}}
   cvt(0);
   (void)(__strong id**)(0);
   return arg; // expected-error {{requires a bridged cast}} expected-note {{use __bridge}} expected-note {{use CFBridgingRetain call}}
 }


 void test12(id collection) {
   for (id x in collection) {
     x = 0;
   }

   for (__strong id x in collection) {
     x = 0;
   }
 }

 void test6(unsigned cond) {
   switch (cond) {
   case 0:
     ;
     id x; // expected-note {{jump bypasses initialization of __strong variable}}

   case 1: // expected-error {{cannot jump}}
     x = 0;
     break;
   }
 }

 @class Test8_incomplete;
 @interface Test8_complete @end;
 @interface Test8_super @end;
 @interface Test8 : Test8_super
 - (id) init00;
 - (id) init01; // expected-note {{declaration in interface}}
 - (id) init02;
 - (id) init03; // covariance
 - (id) init04; // covariance
 - (id) init05;

 - (void) init10; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
 - (void) init11;
 - (void) init12;
 - (void) init13; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
 - (void) init14; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
 - (void) init15;

 // These should be invalid to actually call.
 - (Test8_incomplete*) init20;
 - (Test8_incomplete*) init21; // expected-note {{declaration in interface}}
 - (Test8_incomplete*) init22;
 - (Test8_incomplete*) init23;
 - (Test8_incomplete*) init24;
 - (Test8_incomplete*) init25;

 - (Test8_super*) init30; // id exception to covariance
 - (Test8_super*) init31; // expected-note {{declaration in interface}}
 - (Test8_super*) init32;
 - (Test8_super*) init33;
 - (Test8_super*) init34; // covariance
 - (Test8_super*) init35;

 - (Test8*) init40; // id exception to covariance
 - (Test8*) init41; // expected-note {{declaration in interface}}
 - (Test8*) init42;
 - (Test8*) init43; // this should be a warning, but that's a general language thing, not an ARC thing
 - (Test8*) init44;
 - (Test8*) init45;

 - (Test8_complete*) init50; // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init51; // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init52; // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init53; // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init54; // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init55; // expected-error {{init methods must return a type related to the receiver type}}
 @end
 @implementation Test8
 - (id) init00 { return 0; }
 - (id) init10 { return 0; } // expected-error {{method implementation does not match its declaration}}
 - (id) init20 { return 0; }
 - (id) init30 { return 0; }
 - (id) init40 { return 0; }
 - (id) init50 { return 0; }

 - (void) init01 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
 - (void) init11 {}
 - (void) init21 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
 - (void) init31 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
 - (void) init41 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
 - (void) init51 {}

 - (Test8_incomplete*) init02 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_incomplete*) init12 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_incomplete*) init22 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_incomplete*) init32 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_incomplete*) init42 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_incomplete*) init52 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}

 - (Test8_super*) init03 { return 0; }
 - (Test8_super*) init13 { return 0; } // expected-error {{method implementation does not match its declaration}}
 - (Test8_super*) init23 { return 0; }
 - (Test8_super*) init33 { return 0; }
 - (Test8_super*) init43 { return 0; }
 - (Test8_super*) init53 { return 0; }

 - (Test8*) init04 { return 0; }
 - (Test8*) init14 { return 0; } // expected-error {{method implementation does not match its declaration}}
 - (Test8*) init24 { return 0; }
 - (Test8*) init34 { return 0; }
 - (Test8*) init44 { return 0; }
 - (Test8*) init54 { return 0; }

 - (Test8_complete*) init05 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init15 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init25 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init35 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init45 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 - (Test8_complete*) init55 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
 @end

 @class Test9_incomplete;
 @interface Test9
 - (Test9_incomplete*) init1; // expected-error {{init methods must return a type related to the receiver type}}
 - (Test9_incomplete*) init2;
 @end
 id test9(Test9 *v) {
   return [v init1];
 }

 // rdar://9491791
 void rdar9491791(int p) {
   switch (p) {
   case 3:;
     NSObject *o = [[NSObject alloc] init];
     [o release];
     break;
   default:
     break;
   }
 }

 #define RELEASE_MACRO(x) do { [x release]; } while(1)

 // rdar://9504750
 void rdar9504750(id p) {
   RELEASE_MACRO(p); // expected-error {{ARC forbids explicit message send of 'release'}}
 }

 // rdar://8939557
 @interface TestReadonlyProperty : NSObject
 @property(assign,readonly) NSObject *value;
 @end

 @implementation TestReadonlyProperty
 @synthesize value;
 - (void)viewDidLoad {
   value = [NSObject new]; // expected-error {{assigning retained object}}
 }
 @end

 // rdar://9601437
 @interface I9601437 {
   __unsafe_unretained id x;
 }
 -(void)Meth;
 @end

 @implementation I9601437
 -(void)Meth {
   self->x = [NSObject new]; // expected-error {{assigning retained object}}
 }
 @end

 @interface Test10 : NSObject {
   CFStringRef cfstr;
 }
 @property (retain) id prop;
 -(void)foo;
 @end

 void test(Test10 *x) {
   x.prop = ^{ [x foo]; }; // expected-warning {{likely to lead to a retain cycle}} \
                           // expected-note {{retained by the captured object}}
 }

 @implementation Test10
 -(void)foo {
   ^{
     NSString *str = (NSString *)cfstr; // expected-error {{cast of C pointer type 'CFStringRef' (aka 'const struct __CFString *') to Objective-C pointer type 'NSString *' requires a bridged cast}} \
     // expected-note {{use __bridge to convert directly (no change in ownership)}} \
     // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFStringRef' (aka 'const struct __CFString *') into ARC}}
   };
 }
 @end
	// RUN: %clang_cc1 -arcmt-check -verify -triple x86_64-apple-darwin10 -fblocks -Werror %s

	#if __has_feature(objc_arc)
	#define NS_AUTOMATED_REFCOUNT_UNAVAILABLE __attribute__((unavailable("not available in automatic reference counting mode")))
	#else
	#define NS_AUTOMATED_REFCOUNT_UNAVAILABLE
	#endif

	typedef const void * CFTypeRef;
	CFTypeRef CFBridgingRetain(id X);
	id CFBridgingRelease(CFTypeRef);

	typedef int BOOL;
	typedef unsigned NSUInteger;

	@protocol NSObject
	- (id)retain NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
	- (NSUInteger)retainCount NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
	- (oneway void)release NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
	- (id)autorelease NS_AUTOMATED_REFCOUNT_UNAVAILABLE;
	@end

	@interface NSObject <NSObject> {}
	- (id)init;

	+ (id)new;
	+ (id)alloc;
	- (void)dealloc;

	- (void)finalize;

	- (id)copy;
	- (id)mutableCopy;
	@end

	typedef const struct __CFString * CFStringRef;
	extern const CFStringRef kUTTypePlainText;
	extern const CFStringRef kUTTypeRTF;
	@class NSString;
	@class A;

	struct UnsafeS {
	A *__unsafe_unretained unsafeObj;
	};

	@interface A : NSObject
	- (id)retain __attribute__((unavailable)); // expected-note {{'retain' has been explicitly marked unavailable here}}
	- (id)retainCount __attribute__((unavailable)); // expected-note {{'retainCount' has been explicitly marked unavailable here}}
	- (id)autorelease __attribute__((unavailable)); // expected-note 2 {{'autorelease' has been explicitly marked unavailable here}}
	- (id)init;
	- (oneway void)release;
	- (void)dealloc;
	-(void)test;
	-(id)delegate;
	@end

	@implementation A
	-(void)test {
	[super dealloc];
	}
	-(void)dealloc {
	[super dealloc];
	}

	- (id)retain { return self; } // expected-error {{ARC forbids implementation}}
	- (id)retainCount { return self; } // expected-error {{ARC forbids implementation}}
	- (id)autorelease { return self; } // expected-error {{ARC forbids implementation}}
	- (oneway void)release { } // expected-error {{ARC forbids implementation}}

	-(id)delegate { return self; }
	@end

	id global_foo;

	void test1(A a, BOOL b, struct UnsafeS unsafeS) {
	[[a delegate] release]; // expected-error {{it is not safe to remove 'retain' message on the result of a 'delegate' message; the object that was passed to 'setDelegate:' may not be properly retained}} \
	// expected-error {{ARC forbids explicit message send}}
	[a.delegate release]; // expected-error {{it is not safe to remove 'retain' message on the result of a 'delegate' message; the object that was passed to 'setDelegate:' may not be properly retained}} \
	// expected-error {{ARC forbids explicit message send}}
	[unsafeS->unsafeObj retain]; // expected-error {{it is not safe to remove 'retain' message on an __unsafe_unretained type}} \
	// expected-error {{ARC forbids explicit message send}} \
	// expected-error {{'retain' is unavailable}}
	id foo = [unsafeS->unsafeObj retain]; // no warning.
	[global_foo retain]; // expected-error {{it is not safe to remove 'retain' message on a global variable}} \
	// expected-error {{ARC forbids explicit message send}}
	[global_foo release]; // expected-error {{it is not safe to remove 'release' message on a global variable}} \
	// expected-error {{ARC forbids explicit message send}}
	[a dealloc];
	[a retain];
	[a retainCount]; // expected-error {{ARC forbids explicit message send of 'retainCount'}} \
	// expected-error {{'retainCount' is unavailable}}
	[a release];
	[a autorelease]; // expected-error {{it is not safe to remove an unused 'autorelease' message; its receiver may be destroyed immediately}} \
	// expected-error {{ARC forbids explicit message send}} \
	// expected-error {{'autorelease' is unavailable}}
	[a autorelease]; // expected-error {{it is not safe to remove an unused 'autorelease' message; its receiver may be destroyed immediately}} \
	// expected-error {{ARC forbids explicit message send}} \
	// expected-error {{'autorelease' is unavailable}}
	a = 0;

	CFStringRef cfstr;
	NSString str = (NSString )cfstr; // expected-error {{cast of C pointer type 'CFStringRef' (aka 'const struct __CFString ') to Objective-C pointer type 'NSString ' requires a bridged cast}} \
	// expected-note {{use __bridge to convert directly (no change in ownership)}} \
	// expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFStringRef' (aka 'const struct __CFString *') into ARC}} \
	str = (NSString *)kUTTypePlainText;
	str = b ? kUTTypeRTF : kUTTypePlainText;
	str = (NSString *)(b ? kUTTypeRTF : kUTTypePlainText);
	str = (NSString *)a; // no change.

	SEL s = @selector(retain); // expected-error {{ARC forbids use of 'retain' in a @selector}}
	s = @selector(release); // expected-error {{ARC forbids use of 'release' in a @selector}}
	s = @selector(autorelease); // expected-error {{ARC forbids use of 'autorelease' in a @selector}}
	s = @selector(dealloc); // expected-error {{ARC forbids use of 'dealloc' in a @selector}}

	static id __autoreleasing X1; // expected-error {{global variables cannot have __autoreleasing ownership}}
	}

	struct S {
	A* a; // expected-error {{ARC forbids Objective-C objects in struct}}
	};

	@interface B
	-(id)alloc;
	- (id)initWithInt: (int) i;
	@end

	void rdar8861761() {
	B *o1 = [[B alloc] initWithInt:0];
	B *o2 = [B alloc];
	[o2 initWithInt:0];
	}

	@interface Test13
	- (id) init0;
	- (void) noninit;
	@end
	@implementation Test13
	- (id) init0 {
	self = 0;
	}
	- (void) noninit {
	self = 0; // expected-error {{cannot assign to 'self' outside of a method in the init family}}

	for (__strong id x in collection) { // expected-error {{use of undeclared identifier 'collection'}}
	x = 0;
	}
	}
	@end

	void * cvt(id arg)
	{
	void* voidp_val;
	(void)(int*)arg; // expected-error {{disallowed}}
	(void)(id)arg;
	(void)(__autoreleasing id*)arg; // expected-error {{disallowed}}
	(void)(id*)arg; // expected-error {{disallowed}}

	(void)(__autoreleasing id**)voidp_val;
	(void)(void*)voidp_val;
	(void)(void**)arg; // expected-error {{disallowed}}
	cvt((void*)arg); // expected-error 2 {{requires a bridged cast}} \
	// expected-note 2 {{use __bridge to}} expected-note {{use CFBridgingRelease call}} expected-note {{use CFBridgingRetain call}}
	cvt(0);
	(void)(__strong id**)(0);
	return arg; // expected-error {{requires a bridged cast}} expected-note {{use __bridge}} expected-note {{use CFBridgingRetain call}}
	}


	void test12(id collection) {
	for (id x in collection) {
	x = 0;
	}

	for (__strong id x in collection) {
	x = 0;
	}
	}

	void test6(unsigned cond) {
	switch (cond) {
	case 0:
	;
	id x; // expected-note {{jump bypasses initialization of __strong variable}}

	case 1: // expected-error {{cannot jump}}
	x = 0;
	break;
	}
	}

	@class Test8_incomplete;
	@interface Test8_complete @end;
	@interface Test8_super @end;
	@interface Test8 : Test8_super
	- (id) init00;
	- (id) init01; // expected-note {{declaration in interface}}
	- (id) init02;
	- (id) init03; // covariance
	- (id) init04; // covariance
	- (id) init05;

	- (void) init10; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
	- (void) init11;
	- (void) init12;
	- (void) init13; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
	- (void) init14; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
	- (void) init15;

	// These should be invalid to actually call.
	- (Test8_incomplete*) init20;
	- (Test8_incomplete*) init21; // expected-note {{declaration in interface}}
	- (Test8_incomplete*) init22;
	- (Test8_incomplete*) init23;
	- (Test8_incomplete*) init24;
	- (Test8_incomplete*) init25;

	- (Test8_super*) init30; // id exception to covariance
	- (Test8_super*) init31; // expected-note {{declaration in interface}}
	- (Test8_super*) init32;
	- (Test8_super*) init33;
	- (Test8_super*) init34; // covariance
	- (Test8_super*) init35;

	- (Test8*) init40; // id exception to covariance
	- (Test8*) init41; // expected-note {{declaration in interface}}
	- (Test8*) init42;
	- (Test8*) init43; // this should be a warning, but that's a general language thing, not an ARC thing
	- (Test8*) init44;
	- (Test8*) init45;

	- (Test8_complete*) init50; // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init51; // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init52; // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init53; // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init54; // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init55; // expected-error {{init methods must return a type related to the receiver type}}
	@end
	@implementation Test8
	- (id) init00 { return 0; }
	- (id) init10 { return 0; } // expected-error {{method implementation does not match its declaration}}
	- (id) init20 { return 0; }
	- (id) init30 { return 0; }
	- (id) init40 { return 0; }
	- (id) init50 { return 0; }

	- (void) init01 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
	- (void) init11 {}
	- (void) init21 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
	- (void) init31 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
	- (void) init41 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
	- (void) init51 {}

	- (Test8_incomplete*) init02 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_incomplete*) init12 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_incomplete*) init22 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_incomplete*) init32 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_incomplete*) init42 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_incomplete*) init52 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}

	- (Test8_super*) init03 { return 0; }
	- (Test8_super*) init13 { return 0; } // expected-error {{method implementation does not match its declaration}}
	- (Test8_super*) init23 { return 0; }
	- (Test8_super*) init33 { return 0; }
	- (Test8_super*) init43 { return 0; }
	- (Test8_super*) init53 { return 0; }

	- (Test8*) init04 { return 0; }
	- (Test8*) init14 { return 0; } // expected-error {{method implementation does not match its declaration}}
	- (Test8*) init24 { return 0; }
	- (Test8*) init34 { return 0; }
	- (Test8*) init44 { return 0; }
	- (Test8*) init54 { return 0; }

	- (Test8_complete*) init05 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init15 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init25 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init35 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init45 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	- (Test8_complete*) init55 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
	@end

	@class Test9_incomplete;
	@interface Test9
	- (Test9_incomplete*) init1; // expected-error {{init methods must return a type related to the receiver type}}
	- (Test9_incomplete*) init2;
	@end
	id test9(Test9 *v) {
	return [v init1];
	}

	// rdar://9491791
	void rdar9491791(int p) {
	switch (p) {
	case 3:;
	NSObject *o = [[NSObject alloc] init];
	[o release];
	break;
	default:
	break;
	}
	}

	#define RELEASE_MACRO(x) do { [x release]; } while(1)

	// rdar://9504750
	void rdar9504750(id p) {
	RELEASE_MACRO(p); // expected-error {{ARC forbids explicit message send of 'release'}}
	}

	// rdar://8939557
	@interface TestReadonlyProperty : NSObject
	@property(assign,readonly) NSObject *value;
	@end

	@implementation TestReadonlyProperty
	@synthesize value;
	- (void)viewDidLoad {
	value = [NSObject new]; // expected-error {{assigning retained object}}
	}
	@end

	// rdar://9601437
	@interface I9601437 {
	__unsafe_unretained id x;
	}
	-(void)Meth;
	@end

	@implementation I9601437
	-(void)Meth {
	self->x = [NSObject new]; // expected-error {{assigning retained object}}
	}
	@end

	@interface Test10 : NSObject {
	CFStringRef cfstr;
	}
	@property (retain) id prop;
	-(void)foo;
	@end

	void test(Test10 *x) {
	x.prop = ^{ [x foo]; }; // expected-warning {{likely to lead to a retain cycle}} \
	// expected-note {{retained by the captured object}}
	}

	@implementation Test10
	-(void)foo {
	^{
	NSString str = (NSString )cfstr; // expected-error {{cast of C pointer type 'CFStringRef' (aka 'const struct __CFString ') to Objective-C pointer type 'NSString ' requires a bridged cast}} \
	// expected-note {{use __bridge to convert directly (no change in ownership)}} \
	// expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFStringRef' (aka 'const struct __CFString *') into ARC}}
	};
	}
	@end