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