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