1// RUN: rm -rf %t 2// RUN: %clang_cc1 -fblocks -objcmt-migrate-annotation -objcmt-migrate-instancetype -objcmt-migrate-readwrite-property -mt-migrate-directory %t %s -x objective-c -triple x86_64-apple-darwin11 3// RUN: c-arcmt-test -mt-migrate-directory %t | arcmt-test -verify-transformed-files %s.result 4// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin10 -fsyntax-only -x objective-c %s.result 5 6#ifndef CF_IMPLICIT_BRIDGING_ENABLED 7#if __has_feature(arc_cf_code_audited) 8#define CF_IMPLICIT_BRIDGING_ENABLED _Pragma("clang arc_cf_code_audited begin") 9#else 10#define CF_IMPLICIT_BRIDGING_ENABLED 11#endif 12#endif 13 14#ifndef CF_IMPLICIT_BRIDGING_DISABLED 15#if __has_feature(arc_cf_code_audited) 16#define CF_IMPLICIT_BRIDGING_DISABLED _Pragma("clang arc_cf_code_audited end") 17#else 18#define CF_IMPLICIT_BRIDGING_DISABLED 19#endif 20#endif 21 22#if __has_feature(attribute_ns_returns_retained) 23#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained)) 24#endif 25#if __has_feature(attribute_cf_returns_retained) 26#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained)) 27#endif 28#if __has_feature(attribute_ns_returns_not_retained) 29#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained)) 30#endif 31#if __has_feature(attribute_cf_returns_not_retained) 32#define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained)) 33#endif 34#if __has_feature(attribute_ns_consumes_self) 35#define NS_CONSUMES_SELF __attribute__((ns_consumes_self)) 36#endif 37#if __has_feature(attribute_ns_consumed) 38#define NS_CONSUMED __attribute__((ns_consumed)) 39#endif 40#if __has_feature(attribute_cf_consumed) 41#define CF_CONSUMED __attribute__((cf_consumed)) 42#endif 43#if __has_attribute(ns_returns_autoreleased) 44#define NS_RETURNS_AUTORELEASED __attribute__((ns_returns_autoreleased)) 45#endif 46 47//===----------------------------------------------------------------------===// 48// The following code is reduced using delta-debugging from Mac OS X headers: 49// 50// #include <Cocoa/Cocoa.h> 51// #include <CoreFoundation/CoreFoundation.h> 52// #include <DiskArbitration/DiskArbitration.h> 53// #include <QuartzCore/QuartzCore.h> 54// #include <Quartz/Quartz.h> 55// #include <IOKit/IOKitLib.h> 56// 57// It includes the basic definitions for the test cases below. 58//===----------------------------------------------------------------------===// 59 60typedef unsigned int __darwin_natural_t; 61typedef unsigned long uintptr_t; 62typedef unsigned int uint32_t; 63typedef unsigned long long uint64_t; 64typedef unsigned int UInt32; 65typedef signed long CFIndex; 66typedef CFIndex CFByteOrder; 67typedef struct { 68 CFIndex location; 69 CFIndex length; 70} CFRange; 71static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) { 72 CFRange range; 73 range.location = loc; 74 range.length = len; 75 return range; 76} 77typedef const void * CFTypeRef; 78typedef const struct __CFString * CFStringRef; 79typedef const struct __CFAllocator * CFAllocatorRef; 80extern const CFAllocatorRef kCFAllocatorDefault; 81extern CFTypeRef CFRetain(CFTypeRef cf); 82 83CF_IMPLICIT_BRIDGING_ENABLED 84 85extern void CFRelease(CFTypeRef cf); 86 87CF_IMPLICIT_BRIDGING_DISABLED 88 89extern CFTypeRef CFMakeCollectable(CFTypeRef cf); 90typedef struct { 91} 92CFArrayCallBacks; 93extern const CFArrayCallBacks kCFTypeArrayCallBacks; 94typedef const struct __CFArray * CFArrayRef; 95typedef struct __CFArray * CFMutableArrayRef; 96extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks) CF_RETURNS_RETAINED; 97extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx) CF_RETURNS_NOT_RETAINED; 98extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value); 99typedef struct { 100} 101CFDictionaryKeyCallBacks; 102extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks; 103typedef struct { 104} 105CFDictionaryValueCallBacks; 106extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks; 107typedef const struct __CFDictionary * CFDictionaryRef; 108typedef struct __CFDictionary * CFMutableDictionaryRef; 109extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks) CF_RETURNS_RETAINED; 110typedef UInt32 CFStringEncoding; 111enum { 112kCFStringEncodingMacRoman = 0, kCFStringEncodingWindowsLatin1 = 0x0500, kCFStringEncodingISOLatin1 = 0x0201, kCFStringEncodingNextStepLatin = 0x0B01, kCFStringEncodingASCII = 0x0600, kCFStringEncodingUnicode = 0x0100, kCFStringEncodingUTF8 = 0x08000100, kCFStringEncodingNonLossyASCII = 0x0BFF , kCFStringEncodingUTF16 = 0x0100, kCFStringEncodingUTF16BE = 0x10000100, kCFStringEncodingUTF16LE = 0x14000100, kCFStringEncodingUTF32 = 0x0c000100, kCFStringEncodingUTF32BE = 0x18000100, kCFStringEncodingUTF32LE = 0x1c000100 }; 113extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding) CF_RETURNS_RETAINED; 114typedef double CFTimeInterval; 115typedef CFTimeInterval CFAbsoluteTime; 116extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void); 117typedef const struct __CFDate * CFDateRef; 118extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at) CF_RETURNS_RETAINED; 119extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate); 120typedef __darwin_natural_t natural_t; 121typedef natural_t mach_port_name_t; 122typedef mach_port_name_t mach_port_t; 123typedef int kern_return_t; 124typedef kern_return_t mach_error_t; 125enum { 126kCFNumberSInt8Type = 1, kCFNumberSInt16Type = 2, kCFNumberSInt32Type = 3, kCFNumberSInt64Type = 4, kCFNumberFloat32Type = 5, kCFNumberFloat64Type = 6, kCFNumberCharType = 7, kCFNumberShortType = 8, kCFNumberIntType = 9, kCFNumberLongType = 10, kCFNumberLongLongType = 11, kCFNumberFloatType = 12, kCFNumberDoubleType = 13, kCFNumberCFIndexType = 14, kCFNumberNSIntegerType = 15, kCFNumberCGFloatType = 16, kCFNumberMaxType = 16 }; 127typedef CFIndex CFNumberType; 128typedef const struct __CFNumber * CFNumberRef; 129extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr) CF_RETURNS_RETAINED; 130typedef const struct __CFAttributedString *CFAttributedStringRef; 131typedef struct __CFAttributedString *CFMutableAttributedStringRef; 132extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) CF_RETURNS_RETAINED ; 133extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) CF_RETURNS_RETAINED ; 134extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ; 135typedef signed char BOOL; 136typedef unsigned long NSUInteger; 137@class NSString, Protocol; 138extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2))); 139typedef struct _NSZone NSZone; 140@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; 141@protocol NSObject 142- (BOOL)isEqual:(id)object; 143- (id)retain; 144- (oneway void)release; 145- (id)autorelease; 146- (NSString *)description; 147- (instancetype)init; 148@end 149@protocol NSCopying 150- (id)copyWithZone:(NSZone *)zone; 151@end 152@protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; 153@end 154@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; 155@end 156@interface NSObject <NSObject> {} 157+ (id)allocWithZone:(NSZone *)zone; 158+ (id)alloc; 159+ (id)new; 160- (void)dealloc; 161@end 162@interface NSObject (NSCoderMethods) 163- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder; 164@end 165extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone); 166typedef struct { 167} 168NSFastEnumerationState; 169@protocol NSFastEnumeration 170- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len; 171@end 172@class NSString, NSDictionary; 173@interface NSValue : NSObject <NSCopying, NSCoding> - (void)getValue:(void *)value; 174@end 175@interface NSNumber : NSValue 176- (char)charValue; 177- (instancetype)initWithInt:(int)value; 178+ (NSNumber *)numberWithInt:(int)value; 179@end 180@class NSString; 181@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 182- (NSUInteger)count; 183- (instancetype)initWithObjects:(const id [])objects count:(NSUInteger)cnt; 184+ (instancetype)arrayWithObject:(id)anObject; 185+ (instancetype)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt; 186+ (instancetype)arrayWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 187- (instancetype)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 188- (instancetype)initWithArray:(NSArray *)array; 189@end @interface NSArray (NSArrayCreation) + (instancetype)array; 190@end @interface NSAutoreleasePool : NSObject { 191} 192- (void)drain; 193@end extern NSString * const NSBundleDidLoadNotification; 194typedef double NSTimeInterval; 195@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; 196@end typedef unsigned short unichar; 197@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> 198- (NSUInteger)length; 199- (NSString *)stringByAppendingString:(NSString *)aString; 200- ( const char *)UTF8String; 201- (instancetype)initWithUTF8String:(const char *)nullTerminatedCString; 202+ (instancetype)stringWithUTF8String:(const char *)nullTerminatedCString; 203@end @class NSString, NSURL, NSError; 204@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length; 205+ (instancetype)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length; 206+ (instancetype)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b; 207@end @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary; 208@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 209- (NSUInteger)count; 210+ (instancetype)dictionaryWithObjects:(NSArray *)objects forKeys:(NSArray *)keys; 211+ (instancetype)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt; 212@end 213@interface NSMutableDictionary : NSDictionary - (void)removeObjectForKey:(id)aKey; 214- (void)setObject:(id)anObject forKey:(id)aKey; 215@end @interface NSMutableDictionary (NSMutableDictionaryCreation) + (instancetype)dictionaryWithCapacity:(NSUInteger)numItems; 216@end typedef double CGFloat; 217struct CGSize { 218}; 219typedef struct CGSize CGSize; 220struct CGRect { 221}; 222typedef struct CGRect CGRect; 223typedef mach_port_t io_object_t; 224typedef char io_name_t[128]; 225typedef io_object_t io_iterator_t; 226typedef io_object_t io_service_t; 227typedef struct IONotificationPort * IONotificationPortRef; 228typedef void (*IOServiceMatchingCallback)( void * refcon, io_iterator_t iterator ); 229 230CF_IMPLICIT_BRIDGING_ENABLED 231 232io_service_t IOServiceGetMatchingService( mach_port_t masterPort, CFDictionaryRef matching ); 233kern_return_t IOServiceGetMatchingServices( mach_port_t masterPort, CFDictionaryRef matching, io_iterator_t * existing ); 234 235CF_IMPLICIT_BRIDGING_DISABLED 236 237kern_return_t IOServiceAddNotification( mach_port_t masterPort, const io_name_t notificationType, CFDictionaryRef matching, mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) __attribute__((deprecated)); // expected-note {{'IOServiceAddNotification' declared here}} 238kern_return_t IOServiceAddMatchingNotification( IONotificationPortRef notifyPort, const io_name_t notificationType, CFDictionaryRef CF_CONSUMED matching, IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification ); 239 240CF_IMPLICIT_BRIDGING_ENABLED 241 242CFMutableDictionaryRef IOServiceMatching( const char * name ); 243CFMutableDictionaryRef IOServiceNameMatching( const char * name ); 244CFMutableDictionaryRef IOBSDNameMatching( mach_port_t masterPort, uint32_t options, const char * bsdName ); 245CFMutableDictionaryRef IOOpenFirmwarePathMatching( mach_port_t masterPort, uint32_t options, const char * path ); 246CFMutableDictionaryRef IORegistryEntryIDMatching( uint64_t entryID ); 247 248CF_IMPLICIT_BRIDGING_DISABLED 249 250typedef struct __DASession * DASessionRef; 251extern DASessionRef DASessionCreate( CFAllocatorRef allocator ) CF_RETURNS_RETAINED; 252typedef struct __DADisk * DADiskRef; 253extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name ) CF_RETURNS_RETAINED; 254extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media ) CF_RETURNS_RETAINED; 255extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk ) CF_RETURNS_RETAINED; 256extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk ) CF_RETURNS_RETAINED; 257@interface NSTask : NSObject - (instancetype)init; 258@end typedef struct CGColorSpace *CGColorSpaceRef; 259typedef struct CGImage *CGImageRef; 260typedef struct CGLayer *CGLayerRef; 261@interface NSResponder : NSObject <NSCoding> { 262} 263@end @protocol NSAnimatablePropertyContainer - (id)animator; 264@end extern NSString *NSAnimationTriggerOrderIn ; 265@interface NSView : NSResponder <NSAnimatablePropertyContainer> { 266} 267@end @protocol NSValidatedUserInterfaceItem - (SEL)action; 268@end @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem; 269@end @class NSDate, NSDictionary, NSError, NSException, NSNotification; 270@class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError; 271@interface NSApplication : NSResponder <NSUserInterfaceValidations> { 272} 273- (void)beginSheet:(NSWindow *)sheet modalForWindow:(NSWindow *)docWindow modalDelegate:(id)modalDelegate didEndSelector:(SEL)didEndSelector contextInfo:(void *)contextInfo; 274@end enum { 275NSTerminateCancel = 0, NSTerminateNow = 1, NSTerminateLater = 2 }; 276typedef NSUInteger NSApplicationTerminateReply; 277@protocol NSApplicationDelegate <NSObject> @optional - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender; 278@end @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView; 279@interface NSCell : NSObject <NSCopying, NSCoding> { 280} 281@end 282typedef struct { 283} 284CVTimeStamp; 285@interface CIImage : NSObject <NSCoding, NSCopying> { 286} 287typedef int CIFormat; 288@end enum { 289kDAReturnSuccess = 0, kDAReturnError = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x01, kDAReturnBusy = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x02, kDAReturnBadArgument = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x03, kDAReturnExclusiveAccess = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x04, kDAReturnNoResources = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x05, kDAReturnNotFound = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x06, kDAReturnNotMounted = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x07, kDAReturnNotPermitted = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x08, kDAReturnNotPrivileged = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x09, kDAReturnNotReady = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0A, kDAReturnNotWritable = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0B, kDAReturnUnsupported = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0C }; 290typedef mach_error_t DAReturn; 291typedef const struct __DADissenter * DADissenterRef; 292extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string ) CF_RETURNS_RETAINED; 293@interface CIContext: NSObject { 294} 295- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r CF_RETURNS_RETAINED; 296- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs CF_RETURNS_RETAINED; 297- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d CF_RETURNS_RETAINED; 298@end extern NSString* const QCRendererEventKey; 299@protocol QCCompositionRenderer - (NSDictionary*) attributes; 300@end @interface QCRenderer : NSObject <QCCompositionRenderer> { 301} 302- (id) createSnapshotImageOfType:(NSString*)type; 303@end extern NSString* const QCViewDidStartRenderingNotification; 304@interface QCView : NSView <QCCompositionRenderer> { 305} 306- (id) createSnapshotImageOfType:(NSString*)type; 307@end enum { 308ICEXIFOrientation1 = 1, ICEXIFOrientation2 = 2, ICEXIFOrientation3 = 3, ICEXIFOrientation4 = 4, ICEXIFOrientation5 = 5, ICEXIFOrientation6 = 6, ICEXIFOrientation7 = 7, ICEXIFOrientation8 = 8, }; 309@class ICDevice; 310@protocol ICDeviceDelegate <NSObject> @required - (void)didRemoveDevice:(ICDevice*)device; 311@end extern NSString *const ICScannerStatusWarmingUp; 312@class ICScannerDevice; 313@protocol ICScannerDeviceDelegate <ICDeviceDelegate> @optional - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner; 314@end 315 316typedef long unsigned int __darwin_size_t; 317typedef __darwin_size_t size_t; 318typedef unsigned long CFTypeID; 319struct CGPoint { 320 CGFloat x; 321 CGFloat y; 322}; 323typedef struct CGPoint CGPoint; 324typedef struct CGGradient *CGGradientRef; 325typedef uint32_t CGGradientDrawingOptions; 326extern CFTypeID CGGradientGetTypeID(void); 327extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef 328 space, const CGFloat components[], const CGFloat locations[], size_t count) CF_RETURNS_RETAINED; 329extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space, 330 CFArrayRef colors, const CGFloat locations[]) CF_RETURNS_RETAINED; 331extern CGGradientRef CGGradientRetain(CGGradientRef gradient); 332 333CF_IMPLICIT_BRIDGING_ENABLED 334 335extern void CGGradientRelease(CGGradientRef gradient); 336 337CF_IMPLICIT_BRIDGING_DISABLED 338 339typedef struct CGContext *CGContextRef; 340extern void CGContextDrawLinearGradient(CGContextRef context, 341 CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint, 342 CGGradientDrawingOptions options); 343 344CF_IMPLICIT_BRIDGING_ENABLED 345 346extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void); 347 348CF_IMPLICIT_BRIDGING_DISABLED 349 350 351@interface NSMutableArray : NSObject 352- (void)addObject:(id)object; 353+ (instancetype)array; 354@end 355 356// This is how NSMakeCollectable is declared in the OS X 10.8 headers. 357id NSMakeCollectable(CFTypeRef __attribute__((cf_consumed))) __attribute__((ns_returns_retained)); 358 359typedef const struct __CFUUID * CFUUIDRef; 360 361extern 362void *CFPlugInInstanceCreate(CFAllocatorRef allocator, CFUUIDRef factoryUUID, CFUUIDRef typeUUID); 363 364//===----------------------------------------------------------------------===// 365// Test cases. 366//===----------------------------------------------------------------------===// 367 368CFAbsoluteTime f1() { 369 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 370 CFDateRef date = CFDateCreate(0, t); 371 CFRetain(date); 372 CFRelease(date); 373 CFDateGetAbsoluteTime(date); // no-warning 374 CFRelease(date); 375 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 376 return t; 377} 378 379CFAbsoluteTime f2() { 380 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 381 CFDateRef date = CFDateCreate(0, t); 382 [((NSDate*) date) retain]; 383 CFRelease(date); 384 CFDateGetAbsoluteTime(date); // no-warning 385 [((NSDate*) date) release]; 386 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 387 return t; 388} 389 390 391NSDate* global_x; 392 393// Test to see if we suppress an error when we store the pointer 394// to a global. 395 396CFAbsoluteTime f3() { 397 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 398 CFDateRef date = CFDateCreate(0, t); 399 [((NSDate*) date) retain]; 400 CFRelease(date); 401 CFDateGetAbsoluteTime(date); // no-warning 402 global_x = (NSDate*) date; 403 [((NSDate*) date) release]; 404 t = CFDateGetAbsoluteTime(date); // no-warning 405 return t; 406} 407 408//--------------------------------------------------------------------------- 409// Test case 'f4' differs for region store and basic store. See 410// retain-release-region-store.m and retain-release-basic-store.m. 411//--------------------------------------------------------------------------- 412 413// Test a leak. 414 415CFAbsoluteTime f5(int x) { 416 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 417 CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}} 418 419 if (x) 420 CFRelease(date); 421 422 return t; 423} 424 425// Test a leak involving the return. 426 427CFDateRef f6(int x) { 428 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning{{leak}} 429 CFRetain(date); 430 return date; 431} 432 433// Test a leak involving an overwrite. 434 435CFDateRef f7() { 436 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); //expected-warning{{leak}} 437 CFRetain(date); 438 date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning {{leak}} 439 return date; 440} 441 442// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and 443// has the word create. 444 445CF_IMPLICIT_BRIDGING_ENABLED 446 447CFDateRef MyDateCreate(); 448 449CF_IMPLICIT_BRIDGING_DISABLED 450 451 452CFDateRef f8() { 453 CFDateRef date = MyDateCreate(); // expected-warning{{leak}} 454 CFRetain(date); 455 return date; 456} 457 458__attribute__((cf_returns_retained)) CFDateRef f9() { 459 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // no-warning 460 int *p = 0; 461 // When allocations fail, CFDateCreate can return null. 462 if (!date) *p = 1; // expected-warning{{null}} 463 return date; 464} 465 466// Handle DiskArbitration API: 467// 468// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/ 469// 470void f10(io_service_t media, DADiskRef d, CFStringRef s) { 471 DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}} 472 if (disk) NSLog(@"ok"); 473 474 disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}} 475 if (disk) NSLog(@"ok"); 476 477 CFDictionaryRef dict = DADiskCopyDescription(d); // expected-warning{{leak}} 478 if (dict) NSLog(@"ok"); 479 480 disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}} 481 if (disk) NSLog(@"ok"); 482 483 DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault, // expected-warning{{leak}} 484 kDAReturnSuccess, s); 485 if (dissenter) NSLog(@"ok"); 486 487 DASessionRef session = DASessionCreate(kCFAllocatorDefault); // expected-warning{{leak}} 488 if (session) NSLog(@"ok"); 489} 490 491// Test retain/release checker with CFString and CFMutableArray. 492void f11() { 493 // Create the array. 494 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 495 496 // Create a string. 497 CFStringRef s1 = CFStringCreateWithCString(0, "hello world", 498 kCFStringEncodingUTF8); 499 500 // Add the string to the array. 501 CFArrayAppendValue(A, s1); 502 503 // Decrement the reference count. 504 CFRelease(s1); // no-warning 505 506 // Get the string. We don't own it. 507 s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0); 508 509 // Release the array. 510 CFRelease(A); // no-warning 511 512 // Release the string. This is a bug. 513 CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}} 514} 515 516// PR 3337: Handle functions declared using typedefs. 517typedef CFTypeRef CREATEFUN(); 518 519CF_IMPLICIT_BRIDGING_ENABLED 520 521CFTypeRef MyCreateFun(); 522 523CF_IMPLICIT_BRIDGING_DISABLED 524 525 526void f12() { 527 CFTypeRef o = MyCreateFun(); // expected-warning {{leak}} 528} 529 530void f13_autorelease() { 531 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 532 [(id) A autorelease]; // no-warning 533} 534 535void f13_autorelease_b() { 536 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 537 [(id) A autorelease]; 538 [(id) A autorelease]; 539} // expected-warning{{Object autoreleased too many times}} 540 541CFMutableArrayRef f13_autorelease_c() { 542 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 543 [(id) A autorelease]; 544 [(id) A autorelease]; 545 return A; // expected-warning{{Object autoreleased too many times}} 546} 547 548CFMutableArrayRef f13_autorelease_d() { 549 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 550 [(id) A autorelease]; 551 [(id) A autorelease]; 552 CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object autoreleased too many times}} 553 CFRelease(B); // no-warning 554 while (1) {} 555} 556 557 558// This case exercises the logic where the leak site is the same as the allocation site. 559void f14_leakimmediately() { 560 CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}} 561} 562 563// Test that we track an allocated object beyond the point where the *name* 564// of the variable storing the reference is no longer live. 565void f15() { 566 // Create the array. 567 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 568 CFMutableArrayRef *B = &A; 569 // At this point, the name 'A' is no longer live. 570 CFRelease(*B); // no-warning 571} 572 573// Test when we pass NULL to CFRetain/CFRelease/CFMakeCollectable/CFAutorelease. 574void f16(int x, CFTypeRef p) { 575 if (p) 576 return; 577 578 switch (x) { 579 case 0: 580 CFRelease(p); 581 break; 582 case 1: 583 CFRetain(p); 584 break; 585 case 2: 586 CFMakeCollectable(p); 587 break; 588 case 3: 589 CFAutorelease(p); 590 break; 591 default: 592 break; 593 } 594} 595 596// Test that an object is non-null after CFRetain/CFRelease/CFMakeCollectable/CFAutorelease. 597void f17(int x, CFTypeRef p) { 598 switch (x) { 599 case 0: 600 CFRelease(p); 601 if (!p) 602 CFRelease(0); // no-warning 603 break; 604 case 1: 605 CFRetain(p); 606 if (!p) 607 CFRetain(0); // no-warning 608 break; 609 case 2: 610 CFMakeCollectable(p); 611 if (!p) 612 CFMakeCollectable(0); // no-warning 613 break; 614 case 3: 615 CFAutorelease(p); 616 if (!p) 617 CFAutorelease(0); // no-warning 618 break; 619 default: 620 break; 621 } 622} 623 624// Test basic tracking of ivars associated with 'self'. For the retain/release 625// checker we currently do not want to flag leaks associated with stores 626// of tracked objects to ivars. 627@interface SelfIvarTest : NSObject { 628 id myObj; 629} 630- (void)test_self_tracking; 631@end 632 633@implementation SelfIvarTest 634- (void)test_self_tracking { 635 myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 636} 637@end 638 639// Test return of non-owned objects in contexts where an owned object 640// is expected. 641@interface TestReturnNotOwnedWhenExpectedOwned 642- (NSString*)newString; 643@end 644 645@implementation TestReturnNotOwnedWhenExpectedOwned 646- (NSString*)newString { 647 NSString *s = [NSString stringWithUTF8String:"hello"]; 648 return s; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 649} 650@end 651 652// <rdar://problem/6659160> 653int isFoo(char c); 654 655static void rdar_6659160(char *inkind, char *inname) 656{ 657 // We currently expect that [NSObject alloc] cannot fail. This 658 // will be a toggled flag in the future. It can indeed return null, but 659 // Cocoa programmers generally aren't expected to reason about out-of-memory 660 // conditions. 661 NSString *kind = [[NSString alloc] initWithUTF8String:inkind]; // expected-warning{{leak}} 662 663 // We do allow stringWithUTF8String to fail. This isn't really correct, as 664 // far as returning 0. In most error conditions it will throw an exception. 665 // If allocation fails it could return 0, but again this 666 // isn't expected. 667 NSString *name = [NSString stringWithUTF8String:inname]; 668 if(!name) 669 return; 670 671 const char *kindC = 0; 672 const char *nameC = 0; 673 674 // In both cases, we cannot reach a point down below where we 675 // dereference kindC or nameC with either being null. This is because 676 // we assume that [NSObject alloc] doesn't fail and that we have the guard 677 // up above. 678 679 if(kind) 680 kindC = [kind UTF8String]; 681 if(name) 682 nameC = [name UTF8String]; 683 if(!isFoo(kindC[0])) // expected-warning{{null}} 684 return; 685 if(!isFoo(nameC[0])) // no-warning 686 return; 687 688 [kind release]; 689 [name release]; // expected-warning{{Incorrect decrement of the reference count}} 690} 691 692// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming 693// conventions with respect to 'return'ing ownership. 694@interface PR3677: NSObject @end 695@implementation PR3677 696+ (id)allocWithZone:(NSZone *)inZone { 697 return [super allocWithZone:inZone]; // no-warning 698} 699@end 700 701// PR 3820 - Reason about calls to -dealloc 702void pr3820_DeallocInsteadOfRelease(void) 703{ 704 id foo = [[NSString alloc] init]; // no-warning 705 [foo dealloc]; 706 // foo is not leaked, since it has been deallocated. 707} 708 709void pr3820_ReleaseAfterDealloc(void) 710{ 711 id foo = [[NSString alloc] init]; 712 [foo dealloc]; 713 [foo release]; // expected-warning{{used after it is release}} 714 // NSInternalInconsistencyException: message sent to deallocated object 715} 716 717void pr3820_DeallocAfterRelease(void) 718{ 719 NSLog(@"\n\n[%s]", __FUNCTION__); 720 id foo = [[NSString alloc] init]; 721 [foo release]; 722 [foo dealloc]; // expected-warning{{used after it is released}} 723 // message sent to released object 724} 725 726// From <rdar://problem/6704930>. The problem here is that 'length' binds to 727// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to 728// reason about '($0 - 1) > constant'. As a temporary hack, we drop the value 729// of '($0 - 1)' and conjure a new symbol. 730void rdar6704930(unsigned char *s, unsigned int length) { 731 NSString* name = 0; 732 if (s != 0) { 733 if (length > 0) { 734 while (length > 0) { 735 if (*s == ':') { 736 ++s; 737 --length; 738 name = [[NSString alloc] init]; // no-warning 739 break; 740 } 741 ++s; 742 --length; 743 } 744 if ((length == 0) && (name != 0)) { 745 [name release]; 746 name = 0; 747 } 748 if (length == 0) { // no ':' found -> use it all as name 749 name = [[NSString alloc] init]; // no-warning 750 } 751 } 752 } 753 754 if (name != 0) { 755 [name release]; 756 } 757} 758 759//===----------------------------------------------------------------------===// 760// <rdar://problem/6833332> 761// One build of the analyzer accidentally stopped tracking the allocated 762// object after the 'retain'. 763//===----------------------------------------------------------------------===// 764 765@interface rdar_6833332 : NSObject <NSApplicationDelegate> { 766 NSWindow *window; 767} 768@property (nonatomic, retain) NSWindow *window; 769@end 770 771@implementation rdar_6833332 772@synthesize window; 773- (void)applicationDidFinishLaunching:(NSNotification *)aNotification { 774 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 775 776 [dict setObject:@"foo" forKey:@"bar"]; 777 778 NSLog(@"%@", dict); 779} 780- (void)dealloc { 781 [window release]; 782 [super dealloc]; 783} 784 785- (void)radar10102244 { 786 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 787 if (window) 788 NSLog(@"%@", window); 789} 790@end 791 792//===----------------------------------------------------------------------===// 793// <rdar://problem/6257780> clang checker fails to catch use-after-release 794//===----------------------------------------------------------------------===// 795 796int rdar_6257780_Case1() { 797 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 798 NSArray *array = [NSArray array]; 799 [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 800 [pool drain]; 801 return 0; 802} 803 804//===----------------------------------------------------------------------===// 805// <rdar://problem/10640253> Analyzer is confused about NSAutoreleasePool -allocWithZone:. 806//===----------------------------------------------------------------------===// 807 808void rdar_10640253_autorelease_allocWithZone() { 809 NSAutoreleasePool *pool = [[NSAutoreleasePool allocWithZone:(NSZone*)0] init]; 810 (void) pool; 811} 812 813//===----------------------------------------------------------------------===// 814// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs 815//===----------------------------------------------------------------------===// 816 817void rdar_6866843() { 818 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 819 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init]; 820 NSArray* array = [[NSArray alloc] init]; 821 [dictionary setObject:array forKey:@"key"]; 822 [array release]; 823 // Using 'array' here should be fine 824 NSLog(@"array = %@\n", array); // no-warning 825 // Now the array is released 826 [dictionary release]; 827 [pool drain]; 828} 829 830 831//===----------------------------------------------------------------------===// 832// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects 833//===----------------------------------------------------------------------===// 834 835typedef CFTypeRef OtherRef; 836 837@interface RDar6877235 : NSObject {} 838- (CFTypeRef)_copyCFTypeRef CF_RETURNS_RETAINED; 839- (OtherRef)_copyOtherRef CF_RETURNS_RETAINED; 840@end 841 842@implementation RDar6877235 843- (CFTypeRef)_copyCFTypeRef { 844 return [[NSString alloc] init]; // no-warning 845} 846- (OtherRef)_copyOtherRef { 847 return [[NSString alloc] init]; // no-warning 848} 849@end 850 851//===----------------------------------------------------------------------===// 852// <rdar://problem/6320065> false positive - init method returns an object 853// owned by caller 854//===----------------------------------------------------------------------===// 855 856@interface RDar6320065 : NSObject { 857 NSString *_foo; 858} 859- (instancetype)initReturningNewClass; 860- (id)_initReturningNewClassBad; 861- (instancetype)initReturningNewClassBad2; 862@end 863 864@interface RDar6320065Subclass : RDar6320065 865@end 866 867@implementation RDar6320065 868- (instancetype)initReturningNewClass { 869 [self release]; 870 self = [[RDar6320065Subclass alloc] init]; // no-warning 871 return self; 872} 873- (id)_initReturningNewClassBad { 874 [self release]; 875 [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}} 876 return self; 877} 878- (instancetype)initReturningNewClassBad2 { 879 [self release]; 880 self = [[RDar6320065Subclass alloc] init]; 881 return [self autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 882} 883 884@end 885 886@implementation RDar6320065Subclass 887@end 888 889int RDar6320065_test() { 890 RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning 891 [test release]; 892 return 0; 893} 894 895//===----------------------------------------------------------------------===// 896// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 897// and claims the receiver 898//===----------------------------------------------------------------------===// 899 900@interface RDar7129086 : NSObject {} @end 901@implementation RDar7129086 902- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder { 903 [self release]; // no-warning 904 return [NSString alloc]; // no-warning 905} 906@end 907 908//===----------------------------------------------------------------------===// 909// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a 910// retained object 911//===----------------------------------------------------------------------===// 912 913@interface RDar6859457 : NSObject {} 914- (NSString*) NoCopyString; 915- (NSString*) noCopyString; 916@end 917 918@implementation RDar6859457 919- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 920- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 921@end 922 923void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) { 924 [x NoCopyString]; // expected-warning{{leak}} 925 [x noCopyString]; // expected-warning{{leak}} 926 [NSData dataWithBytesNoCopy:bytes length:dataLength]; // no-warning 927 [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning 928} 929 930//===----------------------------------------------------------------------===// 931// PR 4230 - an autorelease pool is not necessarily leaked during a premature 932// return 933//===----------------------------------------------------------------------===// 934 935static void PR4230(void) 936{ 937 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning 938 NSString *object = [[[NSString alloc] init] autorelease]; // no-warning 939 return; 940} 941 942static void PR4230_new(void) 943{ 944 NSAutoreleasePool *pool = [NSAutoreleasePool new]; // no-warning 945 NSString *object = [[[NSString alloc] init] autorelease]; // no-warning 946 return; 947} 948 949//===----------------------------------------------------------------------===// 950// Method name that has a null IdentifierInfo* for its first selector slot. 951// This test just makes sure that we handle it. 952//===----------------------------------------------------------------------===// 953 954@interface TestNullIdentifier 955@end 956 957@implementation TestNullIdentifier 958+ (id):(int)x, ... { 959 return [[NSString alloc] init]; // expected-warning{{leak}} 960} 961@end 962 963//===----------------------------------------------------------------------===// 964// <rdar://problem/6893565> don't flag leaks for return types that cannot be 965// determined to be CF types 966//===----------------------------------------------------------------------===// 967 968// We don't know if 'struct s6893565' represents a Core Foundation type, so 969// we shouldn't emit an error here. 970typedef struct s6893565* TD6893565; 971 972@interface RDar6893565 {} 973-(TD6893565)newThing; 974@end 975 976@implementation RDar6893565 977-(TD6893565)newThing { 978 return (TD6893565) [[NSString alloc] init]; // no-warning 979} 980@end 981 982//===----------------------------------------------------------------------===// 983// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods 984//===----------------------------------------------------------------------===// 985 986void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context, 987 NSString *str, CIImage *img, CGRect rect, 988 CIFormat form, CGColorSpaceRef cs) { 989 [view createSnapshotImageOfType:str]; // expected-warning{{leak}} 990 [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}} 991 [context createCGImage:img fromRect:rect]; // expected-warning{{leak}} 992 [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}} 993} 994 995//===----------------------------------------------------------------------===// 996// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:] 997// misinterpreted by clang scan-build 998//===----------------------------------------------------------------------===// 999 1000void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) { 1001 [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}} 1002} 1003 1004//===----------------------------------------------------------------------===// 1005// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 1006// checker 1007//===----------------------------------------------------------------------===// 1008 1009void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options, const char * bsdName) { 1010 IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}} 1011} 1012 1013void IOServiceMatching_wrapper(const char * name) { 1014 IOServiceMatching(name); // expected-warning{{leak}} 1015} 1016 1017void IOServiceNameMatching_wrapper(const char * name) { 1018 IOServiceNameMatching(name); // expected-warning{{leak}} 1019} 1020 1021CF_RETURNS_RETAINED CFDictionaryRef CreateDict(); 1022 1023void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType, 1024 mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) { 1025 1026 CFDictionaryRef matching = CreateDict(); 1027 CFRelease(matching); 1028 IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}} 1029 wakePort, reference, notification); 1030} 1031 1032void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) { 1033 IORegistryEntryIDMatching(entryID); // expected-warning{{leak}} 1034} 1035 1036void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options, 1037 const char * path) { 1038 IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}} 1039} 1040 1041void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) { 1042 CFDictionaryRef matching = CreateDict(); 1043 IOServiceGetMatchingService(masterPort, matching); 1044 CFRelease(matching); // expected-warning{{used after it is released}} 1045} 1046 1047void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) { 1048 CFDictionaryRef matching = CreateDict(); 1049 IOServiceGetMatchingServices(masterPort, matching, existing); 1050 CFRelease(matching); // expected-warning{{used after it is released}} 1051} 1052 1053void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 1054 IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) { 1055 1056 CFDictionaryRef matching = CreateDict(); 1057 IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification); 1058 CFRelease(matching); // expected-warning{{used after it is released}} 1059} 1060 1061//===----------------------------------------------------------------------===// 1062// Test of handling objects whose references "escape" to containers. 1063//===----------------------------------------------------------------------===// 1064 1065void CFDictionaryAddValue(CFMutableDictionaryRef, void *, void *); 1066 1067// <rdar://problem/6539791> 1068void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) { 1069 CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); 1070 CFDictionaryAddValue(y, key, x); 1071 CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet 1072 signed z = 1; 1073 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 1074 if (value) { 1075 CFDictionaryAddValue(x, val_key, (void*)value); // no-warning 1076 CFRelease(value); 1077 CFDictionaryAddValue(y, val_key, (void*)value); // no-warning 1078 } 1079} 1080 1081// <rdar://problem/6560661> 1082// Same issue, except with "AppendValue" functions. 1083void rdar_6560661(CFMutableArrayRef x) { 1084 signed z = 1; 1085 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 1086 // CFArrayAppendValue keeps a reference to value. 1087 CFArrayAppendValue(x, value); 1088 CFRelease(value); 1089 CFRetain(value); 1090 CFRelease(value); // no-warning 1091} 1092 1093// <rdar://problem/7152619> 1094// Same issue, excwept with "CFAttributeStringSetAttribute". 1095void rdar_7152619(CFStringRef str) { 1096 CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0); 1097 CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string); 1098 CFRelease(string); 1099 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1100 CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number); 1101 [number release]; 1102 [number retain]; 1103 CFRelease(attrString); 1104} 1105 1106//===----------------------------------------------------------------------===// 1107// Test of handling CGGradientXXX functions. 1108//===----------------------------------------------------------------------===// 1109 1110void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1111 CGPoint myEndPoint) { 1112 size_t num_locations = 6; 1113 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1114 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1115 x, // Start color 1116 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1117 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1118 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1119 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1120 255.0/255.0,255.0/255.0, 255.0/255.0, x 1121 }; // End color 1122 1123 CGGradientRef myGradient = 1124 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}} 1125 components, locations, num_locations); 1126 1127 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1128 0); 1129 CGGradientRelease(myGradient); 1130} 1131 1132void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1133 CGPoint myEndPoint) { 1134 size_t num_locations = 6; 1135 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1136 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1137 x, // Start color 1138 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1139 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1140 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1141 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1142 255.0/255.0,255.0/255.0, 255.0/255.0, x 1143 }; // End color 1144 1145 CGGradientRef myGradient = 1146 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}} 1147 1148 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1149 0); 1150} 1151 1152//===----------------------------------------------------------------------===// 1153// <rdar://problem/7299394> clang false positive: retained instance passed to 1154// thread in pthread_create marked as leak 1155// 1156// Until we have full IPA, the analyzer should stop tracking the reference 1157// count of objects passed to pthread_create. 1158// 1159//===----------------------------------------------------------------------===// 1160 1161struct _opaque_pthread_t {}; 1162struct _opaque_pthread_attr_t {}; 1163typedef struct _opaque_pthread_t *__darwin_pthread_t; 1164typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t; 1165typedef __darwin_pthread_t pthread_t; 1166typedef __darwin_pthread_attr_t pthread_attr_t; 1167typedef unsigned long __darwin_pthread_key_t; 1168typedef __darwin_pthread_key_t pthread_key_t; 1169 1170int pthread_create(pthread_t *, const pthread_attr_t *, 1171 void *(*)(void *), void *); 1172 1173int pthread_setspecific(pthread_key_t key, const void *value); 1174 1175void *rdar_7299394_start_routine(void *p) { 1176 [((id) p) release]; 1177 return 0; 1178} 1179void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) { 1180 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1181 pthread_create(thread, attr, rdar_7299394_start_routine, number); 1182} 1183void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) { 1184 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1185} 1186 1187//===----------------------------------------------------------------------===// 1188// <rdar://problem/11282706> false positive with not understanding thread 1189// local storage 1190//===----------------------------------------------------------------------===// 1191 1192void rdar11282706(pthread_key_t key) { 1193 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1194 pthread_setspecific(key, (void*) number); 1195} 1196 1197//===----------------------------------------------------------------------===// 1198// <rdar://problem/7283567> False leak associated with call to 1199// CVPixelBufferCreateWithBytes () 1200// 1201// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and 1202// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the 1203// pixel buffer object. These test cases show how the analyzer stops tracking 1204// the reference count for the objects passed for this argument. This 1205// could be made smarter. 1206//===----------------------------------------------------------------------===// 1207 1208typedef int int32_t; 1209typedef UInt32 FourCharCode; 1210typedef FourCharCode OSType; 1211typedef uint64_t CVOptionFlags; 1212typedef int32_t CVReturn; 1213typedef struct __CVBuffer *CVBufferRef; 1214typedef CVBufferRef CVImageBufferRef; 1215typedef CVImageBufferRef CVPixelBufferRef; 1216typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress ); 1217 1218extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1219 size_t width, 1220 size_t height, 1221 OSType pixelFormatType, 1222 void *baseAddress, 1223 size_t bytesPerRow, 1224 CVPixelBufferReleaseBytesCallback releaseCallback, 1225 void *releaseRefCon, 1226 CFDictionaryRef pixelBufferAttributes, 1227 CVPixelBufferRef *pixelBufferOut) ; 1228 1229typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] ); 1230 1231extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator, 1232 size_t width, 1233 size_t height, 1234 OSType pixelFormatType, 1235 void *dataPtr, 1236 size_t dataSize, 1237 size_t numberOfPlanes, 1238 void *planeBaseAddress[], 1239 size_t planeWidth[], 1240 size_t planeHeight[], 1241 size_t planeBytesPerRow[], 1242 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1243 void *releaseRefCon, 1244 CFDictionaryRef pixelBufferAttributes, 1245 CVPixelBufferRef *pixelBufferOut) ; 1246 1247extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1248 size_t width, 1249 size_t height, 1250 OSType pixelFormatType, 1251 void *baseAddress, 1252 size_t bytesPerRow, 1253 CVPixelBufferReleaseBytesCallback releaseCallback, 1254 void *releaseRefCon, 1255 CFDictionaryRef pixelBufferAttributes, 1256 CVPixelBufferRef *pixelBufferOut) ; 1257 1258CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height, 1259 OSType pixelFormatType, void *baseAddress, 1260 size_t bytesPerRow, 1261 CVPixelBufferReleaseBytesCallback releaseCallback, 1262 CFDictionaryRef pixelBufferAttributes, 1263 CVPixelBufferRef *pixelBufferOut) { 1264 1265 // For the allocated object, it doesn't really matter what type it is 1266 // for the purpose of this test. All we want to show is that 1267 // this is freed later by the callback. 1268 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1269 1270 return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType, 1271 baseAddress, bytesPerRow, releaseCallback, 1272 number, // potentially released by callback 1273 pixelBufferAttributes, pixelBufferOut) ; 1274} 1275 1276CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height, 1277 OSType pixelFormatType, void *dataPtr, size_t dataSize, 1278 size_t numberOfPlanes, void *planeBaseAddress[], 1279 size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[], 1280 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1281 CFDictionaryRef pixelBufferAttributes, 1282 CVPixelBufferRef *pixelBufferOut) { 1283 1284 // For the allocated object, it doesn't really matter what type it is 1285 // for the purpose of this test. All we want to show is that 1286 // this is freed later by the callback. 1287 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1288 1289 return CVPixelBufferCreateWithPlanarBytes(allocator, 1290 width, height, pixelFormatType, dataPtr, dataSize, 1291 numberOfPlanes, planeBaseAddress, planeWidth, 1292 planeHeight, planeBytesPerRow, releaseCallback, 1293 number, // potentially released by callback 1294 pixelBufferAttributes, pixelBufferOut) ; 1295} 1296 1297//===----------------------------------------------------------------------===// 1298// <rdar://problem/7358899> False leak associated with 1299// CGBitmapContextCreateWithData 1300//===----------------------------------------------------------------------===// 1301typedef uint32_t CGBitmapInfo; 1302typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data); 1303 1304CGContextRef CGBitmapContextCreateWithData(void *data, 1305 size_t width, size_t height, size_t bitsPerComponent, 1306 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1307 CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo) CF_RETURNS_RETAINED; 1308 1309void rdar_7358899(void *data, 1310 size_t width, size_t height, size_t bitsPerComponent, 1311 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1312 CGBitmapContextReleaseDataCallback releaseCallback) { 1313 1314 // For the allocated object, it doesn't really matter what type it is 1315 // for the purpose of this test. All we want to show is that 1316 // this is freed later by the callback. 1317 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1318 1319 CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}} 1320 bytesPerRow, space, bitmapInfo, releaseCallback, number); 1321} 1322 1323//===----------------------------------------------------------------------===// 1324// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to 1325// start before '_' when determining Cocoa fundamental rule 1326// 1327// Previously the retain/release checker just skipped prefixes before the 1328// first '_' entirely. Now the checker honors the prefix if it results in a 1329// recognizable naming convention (e.g., 'new', 'init'). 1330//===----------------------------------------------------------------------===// 1331 1332@interface RDar7265711 {} 1333- (id) new_stuff; 1334@end 1335 1336void rdar7265711_a(RDar7265711 *x) { 1337 id y = [x new_stuff]; // expected-warning{{leak}} 1338} 1339 1340void rdar7265711_b(RDar7265711 *x) { 1341 id y = [x new_stuff]; // no-warning 1342 [y release]; 1343} 1344 1345//===----------------------------------------------------------------------===// 1346// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a 1347// retained reference 1348//===----------------------------------------------------------------------===// 1349 1350@interface NSCursor : NSObject 1351+ (NSCursor *)dragCopyCursor; 1352@end 1353 1354void rdar7306898(void) { 1355 // 'dragCopyCursor' does not follow Cocoa's fundamental rule. It is a noun, not an sentence 1356 // implying a 'copy' of something. 1357 NSCursor *c = [NSCursor dragCopyCursor]; // no-warning 1358 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1359} 1360 1361//===----------------------------------------------------------------------===// 1362// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class 1363// directly is not likely what the user intended 1364//===----------------------------------------------------------------------===// 1365 1366@interface RDar7252064 : NSObject @end 1367void rdar7252064(void) { 1368 [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1369 [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1370 [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1371 [NSAutoreleasePool drain]; // expected-warning{{method '+drain' not found}} expected-warning{{The 'drain' message should be sent to instances of class 'NSAutoreleasePool' and not the class directly}} 1372} 1373 1374//===----------------------------------------------------------------------===// 1375// Tests of ownership attributes. 1376//===----------------------------------------------------------------------===// 1377 1378typedef NSString* MyStringTy; 1379 1380@protocol FooP; 1381 1382@interface TestOwnershipAttr : NSObject 1383- (NSString*) returnsAnOwnedString NS_RETURNS_RETAINED; // no-warning 1384- (NSString*) returnsAnOwnedCFString CF_RETURNS_RETAINED; // no-warning 1385- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning 1386- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning 1387- (NSString*) newString_auto NS_RETURNS_AUTORELEASED; // no-warning 1388- (NSString*) newStringNoAttr; 1389- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}} 1390- (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED; 1391+ (void) consume:(id) NS_CONSUMED x; 1392+ (void) consume2:(id) CF_CONSUMED x; 1393@end 1394 1395static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions and methods}} 1396 1397void test_attr_1(TestOwnershipAttr *X) { 1398 NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}} 1399} 1400 1401void test_attr_1b(TestOwnershipAttr *X) { 1402 NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}} 1403} 1404 1405void test_attr1c(TestOwnershipAttr *X) { 1406 NSString *str = [X newString]; // no-warning 1407 NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}} 1408 NSString *str3 = [X newString_auto]; // no-warning 1409 NSString *str4 = [[X newString_auto] retain]; // expected-warning {{leak}} 1410} 1411 1412void testattr2_a() { 1413 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}} 1414} 1415 1416void testattr2_b() { 1417 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // expected-warning{{leak}} 1418} 1419 1420void testattr2_b_11358224_self_assign_looses_the_leak() { 1421 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit];// expected-warning{{leak}} 1422 x = x; 1423} 1424 1425void testattr2_c() { 1426 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning 1427 [x release]; 1428} 1429 1430void testattr3() { 1431 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1432 [TestOwnershipAttr consume:x]; 1433 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1434 [TestOwnershipAttr consume2:y]; 1435} 1436 1437void consume_ns(id NS_CONSUMED x); 1438void consume_cf(id CF_CONSUMED x); 1439 1440void testattr4() { 1441 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1442 consume_ns(x); 1443 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1444 consume_cf(y); 1445} 1446 1447@interface TestOwnershipAttr2 : NSObject 1448- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning 1449@end 1450 1451@implementation TestOwnershipAttr2 1452- (NSString*) newString { 1453 return [NSString alloc]; // expected-warning {{Potential leak of an object}} 1454} 1455@end 1456 1457@interface MyClassTestCFAttr : NSObject {} 1458- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED; 1459- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED; 1460- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED; 1461- (CFDateRef) newCFRetainedAsCFNoAttr CF_RETURNS_RETAINED; 1462- (NSDate*) alsoReturnsRetained; 1463- (CFDateRef) alsoReturnsRetainedAsCF CF_RETURNS_NOT_RETAINED; 1464- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED; 1465@end 1466 1467CF_RETURNS_RETAINED 1468CFDateRef returnsRetainedCFDate() { 1469 return CFDateCreate(0, CFAbsoluteTimeGetCurrent()); 1470} 1471 1472@implementation MyClassTestCFAttr 1473- (NSDate*) returnsCFRetained { 1474 return (NSDate*) returnsRetainedCFDate(); // No leak. 1475} 1476 1477- (CFDateRef) returnsCFRetainedAsCF { 1478 return returnsRetainedCFDate(); // No leak. 1479} 1480 1481- (CFDateRef) newCFRetainedAsCF { 1482 return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; 1483} 1484 1485- (CFDateRef) newCFRetainedAsCFNoAttr { 1486 return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 1487} 1488 1489- (NSDate*) alsoReturnsRetained { 1490 return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}} 1491} 1492 1493- (CFDateRef) alsoReturnsRetainedAsCF { 1494 return returnsRetainedCFDate(); // expected-warning{{leak}} 1495} 1496 1497 1498- (NSDate*) returnsNSRetained { 1499 return (NSDate*) returnsRetainedCFDate(); // no-warning 1500} 1501@end 1502 1503//===----------------------------------------------------------------------===// 1504// Test that leaks post-dominated by "panic" functions are not reported. 1505// 1506// <rdar://problem/5905851> do not report a leak when post-dominated by a call 1507// to a noreturn or panic function 1508//===----------------------------------------------------------------------===// 1509 1510void panic() __attribute__((noreturn)); 1511void panic_not_in_hardcoded_list() __attribute__((noreturn)); 1512 1513void test_panic_negative() { 1514 signed z = 1; 1515 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1516} 1517 1518void test_panic_positive() { 1519 signed z = 1; 1520 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1521 panic(); 1522} 1523 1524void test_panic_neg_2(int x) { 1525 signed z = 1; 1526 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1527 if (x) 1528 panic(); 1529} 1530 1531void test_panic_pos_2(int x) { 1532 signed z = 1; 1533 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1534 if (x) 1535 panic(); 1536 if (!x) { 1537 // This showed up in <rdar://problem/7796563>, where we silently missed checking 1538 // the function type for noreturn. "panic()" is a hard-coded known panic function 1539 // that isn't always noreturn. 1540 panic_not_in_hardcoded_list(); 1541 } 1542} 1543 1544//===----------------------------------------------------------------------===// 1545// Test uses of blocks (closures) 1546//===----------------------------------------------------------------------===// 1547 1548void test_blocks_1_pos(void) { 1549 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1550 ^{}(); 1551} 1552 1553void test_blocks_1_indirect_release(void) { 1554 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1555 ^{ [number release]; }(); 1556} 1557 1558void test_blocks_1_indirect_retain(void) { 1559 // Eventually this should be reported as a leak. 1560 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1561 ^{ [number retain]; }(); 1562} 1563 1564void test_blocks_1_indirect_release_via_call(void) { 1565 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1566 ^(NSObject *o){ [o release]; }(number); 1567} 1568 1569void test_blocks_1_indirect_retain_via_call(void) { 1570 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning {{leak}} 1571 ^(NSObject *o){ [o retain]; }(number); 1572} 1573 1574//===--------------------------------------------------------------------===// 1575// Test sending message to super that returns an object alias. Previously 1576// this caused a crash in the analyzer. 1577//===--------------------------------------------------------------------===// 1578 1579@interface Rdar8015556 : NSObject {} @end 1580@implementation Rdar8015556 1581- (id)retain { 1582 return [super retain]; 1583} 1584@end 1585 1586// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions 1587// detector. 1588 1589@protocol Prot_R8272168 @end 1590Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168(); 1591void r8272168() { 1592 GetAClassThatImplementsProt_R8272168(); 1593} 1594 1595// Test case for <rdar://problem/8356342>, which in the past triggered 1596// a false positive. 1597@interface RDar8356342 1598- (NSDate*) rdar8356342:(NSDate *)inValue; 1599@end 1600 1601@implementation RDar8356342 1602- (NSDate*) rdar8356342:(NSDate*)inValue { 1603 NSDate *outValue = inValue; 1604 if (outValue == 0) 1605 outValue = [[NSDate alloc] init]; // no-warning 1606 1607 if (outValue != inValue) 1608 [outValue autorelease]; 1609 1610 return outValue; 1611} 1612@end 1613 1614// <rdar://problem/8724287> - This test case previously crashed because 1615// of a bug in BugReporter. 1616extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key) CF_RETURNS_NOT_RETAINED; 1617typedef struct __CFError * CFErrorRef; 1618extern const CFStringRef kCFErrorUnderlyingErrorKey; 1619extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err) CF_RETURNS_RETAINED; 1620static void rdar_8724287(CFErrorRef error) 1621{ 1622 CFErrorRef error_to_dump; 1623 1624 error_to_dump = error; 1625 while (error_to_dump != ((void*)0)) { 1626 CFDictionaryRef info; 1627 1628 info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object}} 1629 1630 if (info != ((void*)0)) { 1631 } 1632 1633 error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey); 1634 } 1635} 1636 1637// <rdar://problem/9234108> - Make sure the model applies cf_consumed 1638// correctly in argument positions besides the first. 1639 1640CF_IMPLICIT_BRIDGING_ENABLED 1641 1642extern void *CFStringCreate(void); 1643 1644CF_IMPLICIT_BRIDGING_DISABLED 1645 1646extern void rdar_9234108_helper(void *key, void * CF_CONSUMED value); 1647void rdar_9234108() { 1648 rdar_9234108_helper(0, CFStringCreate()); 1649} 1650 1651// <rdar://problem/9726279> - Make sure that objc_method_family works 1652// to override naming conventions. 1653struct TwoDoubles { 1654 double one; 1655 double two; 1656}; 1657typedef struct TwoDoubles TwoDoubles; 1658 1659@interface NSValue (Mine) 1660- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles __attribute__((objc_method_family(init))); 1661@end 1662 1663@implementation NSValue (Mine) 1664- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles 1665{ 1666 return [self init]; 1667} 1668@end 1669 1670void rdar9726279() { 1671 TwoDoubles twoDoubles = { 0.0, 0.0 }; 1672 NSValue *value = [[NSValue alloc] _prefix_initWithTwoDoubles:twoDoubles]; 1673 [value release]; 1674} 1675 1676// <rdar://problem/9732321> 1677// Test camelcase support for CF conventions. While Core Foundation APIs 1678// don't use camel casing, other code is allowed to use it. 1679CFArrayRef camelcase_create_1() { 1680 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1681} 1682 1683CFArrayRef camelcase_createno() { 1684 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1685} 1686 1687CFArrayRef camelcase_copy() { 1688 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1689} 1690 1691CFArrayRef camelcase_copying() { 1692 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1693} 1694 1695CFArrayRef copyCamelCase() { 1696 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1697} 1698 1699CFArrayRef __copyCamelCase() { 1700 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1701} 1702 1703CFArrayRef __createCamelCase() { 1704 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1705} 1706 1707CFArrayRef camel_create() { 1708 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1709} 1710 1711 1712CFArrayRef camel_creat() { 1713 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1714} 1715 1716CFArrayRef camel_copy() { 1717 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1718} 1719 1720CFArrayRef camel_copyMachine() { 1721 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1722} 1723 1724CFArrayRef camel_copymachine() { 1725 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1726} 1727 1728// rdar://problem/8024350 1729@protocol F18P 1730- (id) clone; 1731@end 1732@interface F18 : NSObject<F18P> @end 1733@interface F18(Cat) 1734- (id) clone NS_RETURNS_RETAINED; 1735@end 1736 1737@implementation F18 1738- (id) clone { 1739 return [F18 alloc]; 1740} 1741@end 1742 1743// Radar 6582778. 1744void rdar6582778(void) { 1745 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1746 CFTypeRef vals[] = { CFDateCreate(0, t) }; // expected-warning {{leak}} 1747} 1748 1749CFTypeRef global; 1750 1751void rdar6582778_2(void) { 1752 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1753 global = CFDateCreate(0, t); // no-warning 1754} 1755 1756// <rdar://problem/10232019> - Test that objects passed to containers 1757// are marked "escaped". 1758 1759void rdar10232019() { 1760 NSMutableArray *array = [NSMutableArray array]; 1761 1762 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1763 [array addObject:string]; 1764 [string release]; 1765 1766 NSString *otherString = [string stringByAppendingString:@"bar"]; // no-warning 1767 NSLog(@"%@", otherString); 1768} 1769 1770void rdar10232019_positive() { 1771 NSMutableArray *array = [NSMutableArray array]; 1772 1773 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1774 [string release]; 1775 1776 NSString *otherString = [string stringByAppendingString:@"bar"]; // expected-warning {{Reference-counted object is used after it is release}} 1777 NSLog(@"%@", otherString); 1778} 1779 1780// RetainCountChecker support for XPC. 1781// <rdar://problem/9658496> 1782typedef void * xpc_object_t; 1783xpc_object_t _CFXPCCreateXPCObjectFromCFObject(CFTypeRef cf); 1784void xpc_release(xpc_object_t object); 1785 1786void rdar9658496() { 1787 CFStringRef cf; 1788 xpc_object_t xpc; 1789 cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1790 xpc = _CFXPCCreateXPCObjectFromCFObject( cf ); 1791 CFRelease(cf); 1792 xpc_release(xpc); 1793} 1794 1795// Support annotations with method families. 1796@interface RDar10824732 : NSObject 1797- (instancetype)initWithObj:(id CF_CONSUMED)obj; 1798@end 1799 1800@implementation RDar10824732 1801- (instancetype)initWithObj:(id)obj { 1802 [obj release]; 1803 return [super init]; 1804} 1805@end 1806 1807void rdar_10824732() { 1808 @autoreleasepool { 1809 NSString *obj = @"test"; 1810 RDar10824732 *foo = [[RDar10824732 alloc] initWithObj:obj]; // no-warning 1811 [foo release]; 1812 } 1813} 1814 1815// Stop tracking objects passed to functions, which take callbacks as parameters. 1816// radar://10973977 1817typedef int (*CloseCallback) (void *); 1818void ReaderForIO(CloseCallback ioclose, void *ioctx); 1819int IOClose(void *context); 1820 1821@protocol SInS <NSObject> 1822@end 1823 1824@interface radar10973977 : NSObject 1825- (id<SInS>)inputS; 1826- (void)reader; 1827@end 1828 1829@implementation radar10973977 1830- (void)reader 1831{ 1832 id<SInS> inputS = [[self inputS] retain]; 1833 ReaderForIO(IOClose, inputS); 1834} 1835- (id<SInS>)inputS 1836{ 1837 return 0; 1838} 1839@end 1840 1841// Object escapes through a selector callback: radar://11398514 1842extern id NSApp; 1843@interface MySheetController 1844- (id<SInS>)inputS; 1845- (void)showDoSomethingSheetAction:(id)action; 1846- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo; 1847@end 1848 1849@implementation MySheetController 1850- (id<SInS>)inputS { 1851 return 0; 1852} 1853- (void)showDoSomethingSheetAction:(id)action { 1854 id<SInS> inputS = [[self inputS] retain]; 1855 [NSApp beginSheet:0 1856 modalForWindow:0 1857 modalDelegate:0 1858 didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) 1859 contextInfo:(void *)inputS]; // no - warning 1860} 1861- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo { 1862 1863 id contextObject = (id)contextInfo; 1864 [contextObject release]; 1865} 1866 1867- (id)copyAutoreleaseRadar13081402 { 1868 id x = [[[NSString alloc] initWithUTF8String:"foo"] autorelease]; 1869 [x retain]; 1870 return x; // no warning 1871} 1872 1873@end 1874//===----------------------------------------------------------------------===// 1875// Test returning allocated memory in a struct. 1876// 1877// We currently don't have a general way to track pointers that "escape". 1878// Here we test that RetainCountChecker doesn't get excited about returning 1879// allocated CF objects in struct fields. 1880//===----------------------------------------------------------------------===// 1881void *malloc(size_t); 1882struct rdar11104566 { CFStringRef myStr; }; 1883struct rdar11104566 test_rdar11104566() { 1884 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1885 struct rdar11104566 V; 1886 V.myStr = cf; 1887 return V; // no-warning 1888} 1889 1890struct rdar11104566 *test_2_rdar11104566() { 1891 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1892 struct rdar11104566 *V = (struct rdar11104566 *) malloc(sizeof(*V)); 1893 V->myStr = cf; 1894 return V; // no-warning 1895} 1896 1897//===----------------------------------------------------------------------===// 1898// ObjC literals support. 1899//===----------------------------------------------------------------------===// 1900 1901void test_objc_arrays() { 1902 { // CASE ONE -- OBJECT IN ARRAY CREATED DIRECTLY 1903 NSObject *o = [[NSObject alloc] init]; 1904 NSArray *a = [[NSArray alloc] initWithObjects:o, (void*)0]; // expected-warning {{leak}} 1905 [o release]; 1906 [a description]; 1907 [o description]; 1908 } 1909 1910 { // CASE TWO -- OBJECT IN ARRAY CREATED BY DUPING AUTORELEASED ARRAY 1911 NSObject *o = [[NSObject alloc] init]; 1912 NSArray *a1 = [NSArray arrayWithObjects:o, (void*)0]; 1913 NSArray *a2 = [[NSArray alloc] initWithArray:a1]; // expected-warning {{leak}} 1914 [o release]; 1915 [a2 description]; 1916 [o description]; 1917 } 1918 1919 { // CASE THREE -- OBJECT IN RETAINED @[] 1920 NSObject *o = [[NSObject alloc] init]; 1921 NSArray *a3 = [@[o] retain]; // expected-warning {{leak}} 1922 [o release]; 1923 [a3 description]; 1924 [o description]; 1925 } 1926 1927 { // CASE FOUR -- OBJECT IN ARRAY CREATED BY DUPING @[] 1928 NSObject *o = [[NSObject alloc] init]; 1929 NSArray *a = [[NSArray alloc] initWithArray:@[o]]; // expected-warning {{leak}} 1930 [o release]; 1931 1932 [a description]; 1933 [o description]; 1934 } 1935 1936 { // CASE FIVE -- OBJECT IN RETAINED @{} 1937 NSValue *o = [[NSValue alloc] init]; 1938 NSDictionary *a = [@{o : o} retain]; // expected-warning {{leak}} 1939 [o release]; 1940 1941 [a description]; 1942 [o description]; 1943 } 1944} 1945 1946void test_objc_integer_literals() { 1947 id value = [@1 retain]; // expected-warning {{leak}} 1948 [value description]; 1949} 1950 1951void test_objc_boxed_expressions(int x, const char *y) { 1952 id value = [@(x) retain]; // expected-warning {{leak}} 1953 [value description]; 1954 1955 value = [@(y) retain]; // expected-warning {{leak}} 1956 [value description]; 1957} 1958 1959// Test NSLog doesn't escape tracked objects. 1960void rdar11400885(int y) 1961{ 1962 @autoreleasepool { 1963 NSString *printString; 1964 if(y > 2) 1965 printString = [[NSString alloc] init]; 1966 else 1967 printString = [[NSString alloc] init]; 1968 NSLog(@"Once %@", printString); 1969 [printString release]; 1970 NSLog(@"Again: %@", printString); // expected-warning {{Reference-counted object is used after it is released}} 1971 } 1972} 1973 1974id makeCollectableNonLeak() { 1975 extern CFTypeRef CFCreateSomething(); 1976 1977 CFTypeRef object = CFCreateSomething(); // +1 1978 CFRetain(object); // +2 1979 id objCObject = NSMakeCollectable(object); // +2 1980 [objCObject release]; // +1 1981 return [objCObject autorelease]; // +0 1982} 1983 1984 1985void consumeAndStopTracking(id NS_CONSUMED obj, void (^callback)(void)); 1986void CFConsumeAndStopTracking(CFTypeRef CF_CONSUMED obj, void (^callback)(void)); 1987 1988void testConsumeAndStopTracking() { 1989 id retained = [@[] retain]; // +1 1990 consumeAndStopTracking(retained, ^{}); // no-warning 1991 1992 id doubleRetained = [[@[] retain] retain]; // +2 1993 consumeAndStopTracking(doubleRetained, ^{ 1994 [doubleRetained release]; 1995 }); // no-warning 1996 1997 id unretained = @[]; // +0 1998 consumeAndStopTracking(unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 1999} 2000 2001void testCFConsumeAndStopTracking() { 2002 id retained = [@[] retain]; // +1 2003 CFConsumeAndStopTracking((CFTypeRef)retained, ^{}); // no-warning 2004 2005 id doubleRetained = [[@[] retain] retain]; // +2 2006 CFConsumeAndStopTracking((CFTypeRef)doubleRetained, ^{ 2007 [doubleRetained release]; 2008 }); // no-warning 2009 2010 id unretained = @[]; // +0 2011 CFConsumeAndStopTracking((CFTypeRef)unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2012} 2013//===----------------------------------------------------------------------===// 2014// Test 'pragma clang arc_cf_code_audited' support. 2015//===----------------------------------------------------------------------===// 2016 2017typedef void *MyCFType; 2018#pragma clang arc_cf_code_audited begin 2019MyCFType CreateMyCFType(); 2020#pragma clang arc_cf_code_audited end 2021 2022void test_custom_cf() { 2023 MyCFType x = CreateMyCFType(); // expected-warning {{leak of an object stored into 'x'}} 2024} 2025 2026//===----------------------------------------------------------------------===// 2027// Test calling CFPlugInInstanceCreate, which appears in CF but doesn't 2028// return a CF object. 2029//===----------------------------------------------------------------------===// 2030 2031void test_CFPlugInInstanceCreate(CFUUIDRef factoryUUID, CFUUIDRef typeUUID) { 2032 CFPlugInInstanceCreate(kCFAllocatorDefault, factoryUUID, typeUUID); // no-warning 2033} 2034 2035//===----------------------------------------------------------------------===// 2036// PR14927: -drain only has retain-count semantics on NSAutoreleasePool. 2037//===----------------------------------------------------------------------===// 2038 2039@interface PR14927 : NSObject 2040- (void)drain; 2041@end 2042 2043void test_drain() { 2044 PR14927 *obj = [[PR14927 alloc] init]; 2045 [obj drain]; 2046 [obj release]; // no-warning 2047} 2048 2049//===----------------------------------------------------------------------===// 2050// Allow cf_returns_retained and cf_returns_not_retained to mark a return 2051// value as tracked, even if the object isn't a known CF type. 2052//===----------------------------------------------------------------------===// 2053 2054MyCFType getCustom() __attribute__((cf_returns_not_retained)); 2055MyCFType makeCustom() __attribute__((cf_returns_retained)); 2056 2057void testCustomReturnsRetained() { 2058 MyCFType obj = makeCustom(); // expected-warning {{leak of an object stored into 'obj'}} 2059} 2060 2061void testCustomReturnsNotRetained() { 2062 CFRelease(getCustom()); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2063} 2064 2065//===----------------------------------------------------------------------===// 2066// Don't print variables which are out of the current scope. 2067//===----------------------------------------------------------------------===// 2068@interface MyObj12706177 : NSObject 2069-(instancetype)initX; 2070+(void)test12706177; 2071@end 2072static int Cond; 2073@implementation MyObj12706177 2074-(instancetype)initX { 2075 if (Cond) 2076 return 0; 2077 self = [super init]; 2078 return self; 2079} 2080+(void)test12706177 { 2081 id x = [[MyObj12706177 alloc] initX]; //expected-warning {{Potential leak of an object}} 2082 [x release]; 2083} 2084@end 2085 2086//===----------------------------------------------------------------------===// 2087// <rdar://problem/13783514> xpc_connection_set_finalizer_f 2088//===----------------------------------------------------------------------===// 2089 2090typedef xpc_object_t xpc_connection_t; 2091typedef void (*xpc_finalizer_t)(void *value); 2092void xpc_connection_set_context(xpc_connection_t connection, void *ctx); 2093void xpc_connection_set_finalizer_f(xpc_connection_t connection, 2094 xpc_finalizer_t finalizer); 2095void releaseAfterXPC(void *context) { 2096 [(NSArray *)context release]; 2097} 2098 2099void rdar13783514(xpc_connection_t connection) { 2100 xpc_connection_set_context(connection, [[NSMutableArray alloc] init]); 2101 xpc_connection_set_finalizer_f(connection, releaseAfterXPC); 2102} // no-warning 2103 2104CFAttributedStringRef CFAttributedCreate(void *CFObj CF_CONSUMED) CF_RETURNS_RETAINED; 2105 2106@interface Action 2107@property (nonatomic) SEL action; 2108@property (nonatomic, assign) id target; 2109@end 2110