retain-release.m revision de5b4fbe31e50641806234b3334eb9aa829673f8
1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -fblocks -verify %s 2// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -fblocks -verify -x objective-c++ %s 3 4#if __has_feature(attribute_ns_returns_retained) 5#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained)) 6#endif 7#if __has_feature(attribute_cf_returns_retained) 8#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained)) 9#endif 10#if __has_feature(attribute_ns_returns_not_retained) 11#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained)) 12#endif 13#if __has_feature(attribute_cf_returns_not_retained) 14#define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained)) 15#endif 16#if __has_feature(attribute_ns_consumes_self) 17#define NS_CONSUMES_SELF __attribute__((ns_consumes_self)) 18#endif 19#if __has_feature(attribute_ns_consumed) 20#define NS_CONSUMED __attribute__((ns_consumed)) 21#endif 22#if __has_feature(attribute_cf_consumed) 23#define CF_CONSUMED __attribute__((cf_consumed)) 24#endif 25 26//===----------------------------------------------------------------------===// 27// The following code is reduced using delta-debugging from Mac OS X headers: 28// 29// #include <Cocoa/Cocoa.h> 30// #include <CoreFoundation/CoreFoundation.h> 31// #include <DiskArbitration/DiskArbitration.h> 32// #include <QuartzCore/QuartzCore.h> 33// #include <Quartz/Quartz.h> 34// #include <IOKit/IOKitLib.h> 35// 36// It includes the basic definitions for the test cases below. 37//===----------------------------------------------------------------------===// 38 39typedef unsigned int __darwin_natural_t; 40typedef unsigned long uintptr_t; 41typedef unsigned int uint32_t; 42typedef unsigned long long uint64_t; 43typedef unsigned int UInt32; 44typedef signed long CFIndex; 45typedef CFIndex CFByteOrder; 46typedef struct { 47 CFIndex location; 48 CFIndex length; 49} CFRange; 50static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) { 51 CFRange range; 52 range.location = loc; 53 range.length = len; 54 return range; 55} 56typedef const void * CFTypeRef; 57typedef const struct __CFString * CFStringRef; 58typedef const struct __CFAllocator * CFAllocatorRef; 59extern const CFAllocatorRef kCFAllocatorDefault; 60extern CFTypeRef CFRetain(CFTypeRef cf); 61extern void CFRelease(CFTypeRef cf); 62typedef struct { 63} 64CFArrayCallBacks; 65extern const CFArrayCallBacks kCFTypeArrayCallBacks; 66typedef const struct __CFArray * CFArrayRef; 67typedef struct __CFArray * CFMutableArrayRef; 68extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks); 69extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx); 70extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value); 71typedef struct { 72} 73CFDictionaryKeyCallBacks; 74extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks; 75typedef struct { 76} 77CFDictionaryValueCallBacks; 78extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks; 79typedef const struct __CFDictionary * CFDictionaryRef; 80typedef struct __CFDictionary * CFMutableDictionaryRef; 81extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks); 82typedef UInt32 CFStringEncoding; 83enum { 84kCFStringEncodingMacRoman = 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 }; 85extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding); 86typedef double CFTimeInterval; 87typedef CFTimeInterval CFAbsoluteTime; 88extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void); 89typedef const struct __CFDate * CFDateRef; 90extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at); 91extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate); 92typedef __darwin_natural_t natural_t; 93typedef natural_t mach_port_name_t; 94typedef mach_port_name_t mach_port_t; 95typedef int kern_return_t; 96typedef kern_return_t mach_error_t; 97enum { 98kCFNumberSInt8Type = 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 }; 99typedef CFIndex CFNumberType; 100typedef const struct __CFNumber * CFNumberRef; 101extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr); 102typedef const struct __CFAttributedString *CFAttributedStringRef; 103typedef struct __CFAttributedString *CFMutableAttributedStringRef; 104extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ; 105extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ; 106extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ; 107typedef signed char BOOL; 108typedef unsigned long NSUInteger; 109@class NSString, Protocol; 110extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2))); 111typedef struct _NSZone NSZone; 112@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; 113@protocol NSObject 114- (BOOL)isEqual:(id)object; 115- (id)retain; 116- (oneway void)release; 117- (id)autorelease; 118- (NSString *)description; 119- (id)init; 120@end 121@protocol NSCopying 122- (id)copyWithZone:(NSZone *)zone; 123@end 124@protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; 125@end 126@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; 127@end 128@interface NSObject <NSObject> {} 129+ (id)allocWithZone:(NSZone *)zone; 130+ (id)alloc; 131- (void)dealloc; 132@end 133@interface NSObject (NSCoderMethods) 134- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder; 135@end 136extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone); 137typedef struct { 138} 139NSFastEnumerationState; 140@protocol NSFastEnumeration 141- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len; 142@end 143@class NSString, NSDictionary; 144@interface NSValue : NSObject <NSCopying, NSCoding> - (void)getValue:(void *)value; 145@end @interface NSNumber : NSValue - (char)charValue; 146- (id)initWithInt:(int)value; 147@end @class NSString; 148@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 149- (NSUInteger)count; 150- (id)initWithObjects:(const id [])objects count:(NSUInteger)cnt; 151+ (id)arrayWithObject:(id)anObject; 152+ (id)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt; 153+ (id)arrayWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 154- (id)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 155- (id)initWithArray:(NSArray *)array; 156@end @interface NSArray (NSArrayCreation) + (id)array; 157@end @interface NSAutoreleasePool : NSObject { 158} 159- (void)drain; 160@end extern NSString * const NSBundleDidLoadNotification; 161typedef double NSTimeInterval; 162@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; 163@end typedef unsigned short unichar; 164@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> 165- (NSUInteger)length; 166- (NSString *)stringByAppendingString:(NSString *)aString; 167- ( const char *)UTF8String; 168- (id)initWithUTF8String:(const char *)nullTerminatedCString; 169+ (id)stringWithUTF8String:(const char *)nullTerminatedCString; 170@end @class NSString, NSURL, NSError; 171@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length; 172+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length; 173+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b; 174@end @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary; 175@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 176- (NSUInteger)count; 177+ (id)dictionaryWithObjects:(NSArray *)objects forKeys:(NSArray *)keys; 178+ (id)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt; 179@end 180@interface NSMutableDictionary : NSDictionary - (void)removeObjectForKey:(id)aKey; 181- (void)setObject:(id)anObject forKey:(id)aKey; 182@end @interface NSMutableDictionary (NSMutableDictionaryCreation) + (id)dictionaryWithCapacity:(NSUInteger)numItems; 183@end typedef double CGFloat; 184struct CGSize { 185}; 186typedef struct CGSize CGSize; 187struct CGRect { 188}; 189typedef struct CGRect CGRect; 190typedef mach_port_t io_object_t; 191typedef char io_name_t[128]; 192typedef io_object_t io_iterator_t; 193typedef io_object_t io_service_t; 194typedef struct IONotificationPort * IONotificationPortRef; 195typedef void (*IOServiceMatchingCallback)( void * refcon, io_iterator_t iterator ); 196io_service_t IOServiceGetMatchingService( mach_port_t masterPort, CFDictionaryRef matching ); 197kern_return_t IOServiceGetMatchingServices( mach_port_t masterPort, CFDictionaryRef matching, io_iterator_t * existing ); 198kern_return_t IOServiceAddNotification( mach_port_t masterPort, const io_name_t notificationType, CFDictionaryRef matching, mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) __attribute__((deprecated)); 199kern_return_t IOServiceAddMatchingNotification( IONotificationPortRef notifyPort, const io_name_t notificationType, CFDictionaryRef matching, IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification ); 200CFMutableDictionaryRef IOServiceMatching( const char * name ); 201CFMutableDictionaryRef IOServiceNameMatching( const char * name ); 202CFMutableDictionaryRef IOBSDNameMatching( mach_port_t masterPort, uint32_t options, const char * bsdName ); 203CFMutableDictionaryRef IOOpenFirmwarePathMatching( mach_port_t masterPort, uint32_t options, const char * path ); 204CFMutableDictionaryRef IORegistryEntryIDMatching( uint64_t entryID ); 205typedef struct __DASession * DASessionRef; 206extern DASessionRef DASessionCreate( CFAllocatorRef allocator ); 207typedef struct __DADisk * DADiskRef; 208extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name ); 209extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media ); 210extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk ); 211extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk ); 212@interface NSTask : NSObject - (id)init; 213@end typedef struct CGColorSpace *CGColorSpaceRef; 214typedef struct CGImage *CGImageRef; 215typedef struct CGLayer *CGLayerRef; 216@interface NSResponder : NSObject <NSCoding> { 217} 218@end @protocol NSAnimatablePropertyContainer - (id)animator; 219@end extern NSString *NSAnimationTriggerOrderIn ; 220@interface NSView : NSResponder <NSAnimatablePropertyContainer> { 221} 222@end @protocol NSValidatedUserInterfaceItem - (SEL)action; 223@end @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem; 224@end @class NSDate, NSDictionary, NSError, NSException, NSNotification; 225@interface NSApplication : NSResponder <NSUserInterfaceValidations> { 226} 227@end enum { 228NSTerminateCancel = 0, NSTerminateNow = 1, NSTerminateLater = 2 }; 229typedef NSUInteger NSApplicationTerminateReply; 230@protocol NSApplicationDelegate <NSObject> @optional - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender; 231@end @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView; 232@interface NSCell : NSObject <NSCopying, NSCoding> { 233} 234@end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError; 235typedef struct { 236} 237CVTimeStamp; 238@interface CIImage : NSObject <NSCoding, NSCopying> { 239} 240typedef int CIFormat; 241@end enum { 242kDAReturnSuccess = 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 }; 243typedef mach_error_t DAReturn; 244typedef const struct __DADissenter * DADissenterRef; 245extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string ); 246@interface CIContext: NSObject { 247} 248- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r; 249- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs; 250- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d; 251@end extern NSString* const QCRendererEventKey; 252@protocol QCCompositionRenderer - (NSDictionary*) attributes; 253@end @interface QCRenderer : NSObject <QCCompositionRenderer> { 254} 255- (id) createSnapshotImageOfType:(NSString*)type; 256@end extern NSString* const QCViewDidStartRenderingNotification; 257@interface QCView : NSView <QCCompositionRenderer> { 258} 259- (id) createSnapshotImageOfType:(NSString*)type; 260@end enum { 261ICEXIFOrientation1 = 1, ICEXIFOrientation2 = 2, ICEXIFOrientation3 = 3, ICEXIFOrientation4 = 4, ICEXIFOrientation5 = 5, ICEXIFOrientation6 = 6, ICEXIFOrientation7 = 7, ICEXIFOrientation8 = 8, }; 262@class ICDevice; 263@protocol ICDeviceDelegate <NSObject> @required - (void)didRemoveDevice:(ICDevice*)device; 264@end extern NSString *const ICScannerStatusWarmingUp; 265@class ICScannerDevice; 266@protocol ICScannerDeviceDelegate <ICDeviceDelegate> @optional - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner; 267@end 268 269typedef long unsigned int __darwin_size_t; 270typedef __darwin_size_t size_t; 271typedef unsigned long CFTypeID; 272struct CGPoint { 273 CGFloat x; 274 CGFloat y; 275}; 276typedef struct CGPoint CGPoint; 277typedef struct CGGradient *CGGradientRef; 278typedef uint32_t CGGradientDrawingOptions; 279extern CFTypeID CGGradientGetTypeID(void); 280extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef 281 space, const CGFloat components[], const CGFloat locations[], size_t count); 282extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space, 283 CFArrayRef colors, const CGFloat locations[]); 284extern CGGradientRef CGGradientRetain(CGGradientRef gradient); 285extern void CGGradientRelease(CGGradientRef gradient); 286typedef struct CGContext *CGContextRef; 287extern void CGContextDrawLinearGradient(CGContextRef context, 288 CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint, 289 CGGradientDrawingOptions options); 290extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void); 291 292@interface NSMutableArray : NSObject 293- (void)addObject:(id)object; 294+ (id)array; 295@end 296 297 298//===----------------------------------------------------------------------===// 299// Test cases. 300//===----------------------------------------------------------------------===// 301 302CFAbsoluteTime f1() { 303 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 304 CFDateRef date = CFDateCreate(0, t); 305 CFRetain(date); 306 CFRelease(date); 307 CFDateGetAbsoluteTime(date); // no-warning 308 CFRelease(date); 309 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 310 return t; 311} 312 313CFAbsoluteTime f2() { 314 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 315 CFDateRef date = CFDateCreate(0, t); 316 [((NSDate*) date) retain]; 317 CFRelease(date); 318 CFDateGetAbsoluteTime(date); // no-warning 319 [((NSDate*) date) release]; 320 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 321 return t; 322} 323 324 325NSDate* global_x; 326 327// Test to see if we supresss an error when we store the pointer 328// to a global. 329 330CFAbsoluteTime f3() { 331 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 332 CFDateRef date = CFDateCreate(0, t); 333 [((NSDate*) date) retain]; 334 CFRelease(date); 335 CFDateGetAbsoluteTime(date); // no-warning 336 global_x = (NSDate*) date; 337 [((NSDate*) date) release]; 338 t = CFDateGetAbsoluteTime(date); // no-warning 339 return t; 340} 341 342//--------------------------------------------------------------------------- 343// Test case 'f4' differs for region store and basic store. See 344// retain-release-region-store.m and retain-release-basic-store.m. 345//--------------------------------------------------------------------------- 346 347// Test a leak. 348 349CFAbsoluteTime f5(int x) { 350 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 351 CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}} 352 353 if (x) 354 CFRelease(date); 355 356 return t; 357} 358 359// Test a leak involving the return. 360 361CFDateRef f6(int x) { 362 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning{{leak}} 363 CFRetain(date); 364 return date; 365} 366 367// Test a leak involving an overwrite. 368 369CFDateRef f7() { 370 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); //expected-warning{{leak}} 371 CFRetain(date); 372 date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning {{leak}} 373 return date; 374} 375 376// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and 377// has the word create. 378CFDateRef MyDateCreate(); 379 380CFDateRef f8() { 381 CFDateRef date = MyDateCreate(); // expected-warning{{leak}} 382 CFRetain(date); 383 return date; 384} 385 386__attribute__((cf_returns_retained)) CFDateRef f9() { 387 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // no-warning 388 int *p = 0; 389 // When allocations fail, CFDateCreate can return null. 390 if (!date) *p = 1; // expected-warning{{null}} 391 return date; 392} 393 394// Handle DiskArbitration API: 395// 396// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/ 397// 398void f10(io_service_t media, DADiskRef d, CFStringRef s) { 399 DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}} 400 if (disk) NSLog(@"ok"); 401 402 disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}} 403 if (disk) NSLog(@"ok"); 404 405 CFDictionaryRef dict = DADiskCopyDescription(d); // expected-warning{{leak}} 406 if (dict) NSLog(@"ok"); 407 408 disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}} 409 if (disk) NSLog(@"ok"); 410 411 DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault, // expected-warning{{leak}} 412 kDAReturnSuccess, s); 413 if (dissenter) NSLog(@"ok"); 414 415 DASessionRef session = DASessionCreate(kCFAllocatorDefault); // expected-warning{{leak}} 416 if (session) NSLog(@"ok"); 417} 418 419// Test retain/release checker with CFString and CFMutableArray. 420void f11() { 421 // Create the array. 422 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 423 424 // Create a string. 425 CFStringRef s1 = CFStringCreateWithCString(0, "hello world", 426 kCFStringEncodingUTF8); 427 428 // Add the string to the array. 429 CFArrayAppendValue(A, s1); 430 431 // Decrement the reference count. 432 CFRelease(s1); // no-warning 433 434 // Get the string. We don't own it. 435 s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0); 436 437 // Release the array. 438 CFRelease(A); // no-warning 439 440 // Release the string. This is a bug. 441 CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}} 442} 443 444// PR 3337: Handle functions declared using typedefs. 445typedef CFTypeRef CREATEFUN(); 446CREATEFUN MyCreateFun; 447 448void f12() { 449 CFTypeRef o = MyCreateFun(); // expected-warning {{leak}} 450} 451 452void f13_autorelease() { 453 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 454 [(id) A autorelease]; // no-warning 455} 456 457void f13_autorelease_b() { 458 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 459 [(id) A autorelease]; 460 [(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}} 461} 462 463CFMutableArrayRef f13_autorelease_c() { 464 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 465 [(id) A autorelease]; 466 [(id) A autorelease]; 467 return A; // expected-warning{{Object sent -autorelease too many times}} 468} 469 470CFMutableArrayRef f13_autorelease_d() { 471 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 472 [(id) A autorelease]; 473 [(id) A autorelease]; 474 CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}} 475 CFRelease(B); // no-warning 476 while (1) {} 477} 478 479 480// This case exercises the logic where the leak site is the same as the allocation site. 481void f14_leakimmediately() { 482 CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}} 483} 484 485// Test that we track an allocated object beyond the point where the *name* 486// of the variable storing the reference is no longer live. 487void f15() { 488 // Create the array. 489 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 490 CFMutableArrayRef *B = &A; 491 // At this point, the name 'A' is no longer live. 492 CFRelease(*B); // no-warning 493} 494 495// Test when we pass NULL to CFRetain/CFRelease. 496void f16(int x, CFTypeRef p) { 497 if (p) 498 return; 499 500 if (x) { 501 CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}} 502 } 503 else { 504 CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}} 505 } 506} 507 508// Test that an object is non-null after being CFRetained/CFReleased. 509void f17(int x, CFTypeRef p) { 510 if (x) { 511 CFRelease(p); 512 if (!p) 513 CFRelease(0); // no-warning 514 } 515 else { 516 CFRetain(p); 517 if (!p) 518 CFRetain(0); // no-warning 519 } 520} 521 522// Test basic tracking of ivars associated with 'self'. For the retain/release 523// checker we currently do not want to flag leaks associated with stores 524// of tracked objects to ivars. 525@interface SelfIvarTest : NSObject { 526 id myObj; 527} 528- (void)test_self_tracking; 529@end 530 531@implementation SelfIvarTest 532- (void)test_self_tracking { 533 myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 534} 535@end 536 537// Test return of non-owned objects in contexts where an owned object 538// is expected. 539@interface TestReturnNotOwnedWhenExpectedOwned 540- (NSString*)newString; 541@end 542 543@implementation TestReturnNotOwnedWhenExpectedOwned 544- (NSString*)newString { 545 NSString *s = [NSString stringWithUTF8String:"hello"]; 546 return s; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 547} 548@end 549 550// <rdar://problem/6659160> 551int isFoo(char c); 552 553static void rdar_6659160(char *inkind, char *inname) 554{ 555 // We currently expect that [NSObject alloc] cannot fail. This 556 // will be a toggled flag in the future. It can indeed return null, but 557 // Cocoa programmers generally aren't expected to reason about out-of-memory 558 // conditions. 559 NSString *kind = [[NSString alloc] initWithUTF8String:inkind]; // expected-warning{{leak}} 560 561 // We do allow stringWithUTF8String to fail. This isn't really correct, as 562 // far as returning 0. In most error conditions it will throw an exception. 563 // If allocation fails it could return 0, but again this 564 // isn't expected. 565 NSString *name = [NSString stringWithUTF8String:inname]; 566 if(!name) 567 return; 568 569 const char *kindC = 0; 570 const char *nameC = 0; 571 572 // In both cases, we cannot reach a point down below where we 573 // dereference kindC or nameC with either being null. This is because 574 // we assume that [NSObject alloc] doesn't fail and that we have the guard 575 // up above. 576 577 if(kind) 578 kindC = [kind UTF8String]; 579 if(name) 580 nameC = [name UTF8String]; 581 if(!isFoo(kindC[0])) // expected-warning{{null}} 582 return; 583 if(!isFoo(nameC[0])) // no-warning 584 return; 585 586 [kind release]; 587 [name release]; // expected-warning{{Incorrect decrement of the reference count}} 588} 589 590// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming 591// conventions with respect to 'return'ing ownership. 592@interface PR3677: NSObject @end 593@implementation PR3677 594+ (id)allocWithZone:(NSZone *)inZone { 595 return [super allocWithZone:inZone]; // no-warning 596} 597@end 598 599// PR 3820 - Reason about calls to -dealloc 600void pr3820_DeallocInsteadOfRelease(void) 601{ 602 id foo = [[NSString alloc] init]; // no-warning 603 [foo dealloc]; 604 // foo is not leaked, since it has been deallocated. 605} 606 607void pr3820_ReleaseAfterDealloc(void) 608{ 609 id foo = [[NSString alloc] init]; 610 [foo dealloc]; 611 [foo release]; // expected-warning{{used after it is release}} 612 // NSInternalInconsistencyException: message sent to deallocated object 613} 614 615void pr3820_DeallocAfterRelease(void) 616{ 617 NSLog(@"\n\n[%s]", __FUNCTION__); 618 id foo = [[NSString alloc] init]; 619 [foo release]; 620 [foo dealloc]; // expected-warning{{used after it is released}} 621 // message sent to released object 622} 623 624// From <rdar://problem/6704930>. The problem here is that 'length' binds to 625// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to 626// reason about '($0 - 1) > constant'. As a temporary hack, we drop the value 627// of '($0 - 1)' and conjure a new symbol. 628void rdar6704930(unsigned char *s, unsigned int length) { 629 NSString* name = 0; 630 if (s != 0) { 631 if (length > 0) { 632 while (length > 0) { 633 if (*s == ':') { 634 ++s; 635 --length; 636 name = [[NSString alloc] init]; // no-warning 637 break; 638 } 639 ++s; 640 --length; 641 } 642 if ((length == 0) && (name != 0)) { 643 [name release]; 644 name = 0; 645 } 646 if (length == 0) { // no ':' found -> use it all as name 647 name = [[NSString alloc] init]; // no-warning 648 } 649 } 650 } 651 652 if (name != 0) { 653 [name release]; 654 } 655} 656 657//===----------------------------------------------------------------------===// 658// <rdar://problem/6833332> 659// One build of the analyzer accidentally stopped tracking the allocated 660// object after the 'retain'. 661//===----------------------------------------------------------------------===// 662 663@interface rdar_6833332 : NSObject <NSApplicationDelegate> { 664 NSWindow *window; 665} 666@property (nonatomic, retain) NSWindow *window; 667@end 668 669@implementation rdar_6833332 670@synthesize window; 671- (void)applicationDidFinishLaunching:(NSNotification *)aNotification { 672 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 673 674 [dict setObject:@"foo" forKey:@"bar"]; 675 676 NSLog(@"%@", dict); 677} 678- (void)dealloc { 679 [window release]; 680 [super dealloc]; 681} 682 683- (void)radar10102244 { 684 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 685 if (window) 686 NSLog(@"%@", window); 687} 688@end 689 690//===----------------------------------------------------------------------===// 691// <rdar://problem/6257780> clang checker fails to catch use-after-release 692//===----------------------------------------------------------------------===// 693 694int rdar_6257780_Case1() { 695 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 696 NSArray *array = [NSArray array]; 697 [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 698 [pool drain]; 699 return 0; 700} 701 702//===----------------------------------------------------------------------===// 703// <rdar://problem/10640253> Analyzer is confused about NSAutoreleasePool -allocWithZone:. 704//===----------------------------------------------------------------------===// 705 706void rdar_10640253_autorelease_allocWithZone() { 707 NSAutoreleasePool *pool = [[NSAutoreleasePool allocWithZone:(NSZone*)0] init]; 708 (void) pool; 709} 710 711//===----------------------------------------------------------------------===// 712// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs 713//===----------------------------------------------------------------------===// 714 715void rdar_6866843() { 716 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 717 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init]; 718 NSArray* array = [[NSArray alloc] init]; 719 [dictionary setObject:array forKey:@"key"]; 720 [array release]; 721 // Using 'array' here should be fine 722 NSLog(@"array = %@\n", array); // no-warning 723 // Now the array is released 724 [dictionary release]; 725 [pool drain]; 726} 727 728 729//===----------------------------------------------------------------------===// 730// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects 731//===----------------------------------------------------------------------===// 732 733typedef CFTypeRef OtherRef; 734 735@interface RDar6877235 : NSObject {} 736- (CFTypeRef)_copyCFTypeRef; 737- (OtherRef)_copyOtherRef; 738@end 739 740@implementation RDar6877235 741- (CFTypeRef)_copyCFTypeRef { 742 return [[NSString alloc] init]; // no-warning 743} 744- (OtherRef)_copyOtherRef { 745 return [[NSString alloc] init]; // no-warning 746} 747@end 748 749//===----------------------------------------------------------------------===// 750//<rdar://problem/6320065> false positive - init method returns an object 751// owned by caller 752//===----------------------------------------------------------------------===// 753 754@interface RDar6320065 : NSObject { 755 NSString *_foo; 756} 757- (id)initReturningNewClass; 758- (id)_initReturningNewClassBad; 759- (id)initReturningNewClassBad2; 760@end 761 762@interface RDar6320065Subclass : RDar6320065 763@end 764 765@implementation RDar6320065 766- (id)initReturningNewClass { 767 [self release]; 768 self = [[RDar6320065Subclass alloc] init]; // no-warning 769 return self; 770} 771- (id)_initReturningNewClassBad { 772 [self release]; 773 [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}} 774 return self; 775} 776- (id)initReturningNewClassBad2 { 777 [self release]; 778 self = [[RDar6320065Subclass alloc] init]; 779 return [self autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 780} 781 782@end 783 784@implementation RDar6320065Subclass 785@end 786 787int RDar6320065_test() { 788 RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning 789 [test release]; 790 return 0; 791} 792 793//===----------------------------------------------------------------------===// 794// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 795// and claims the receiver 796//===----------------------------------------------------------------------===// 797 798@interface RDar7129086 : NSObject {} @end 799@implementation RDar7129086 800- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder { 801 [self release]; // no-warning 802 return [NSString alloc]; // no-warning 803} 804@end 805 806//===----------------------------------------------------------------------===// 807// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a 808// retained object 809//===----------------------------------------------------------------------===// 810 811@interface RDar6859457 : NSObject {} 812- (NSString*) NoCopyString; 813- (NSString*) noCopyString; 814@end 815 816@implementation RDar6859457 817- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 818- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 819@end 820 821void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) { 822 [x NoCopyString]; // no-warning 823 [x noCopyString]; // no-warning 824 [NSData dataWithBytesNoCopy:bytes length:dataLength]; // no-warning 825 [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning 826} 827 828//===----------------------------------------------------------------------===// 829// PR 4230 - an autorelease pool is not necessarily leaked during a premature 830// return 831//===----------------------------------------------------------------------===// 832 833static void PR4230(void) 834{ 835 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning 836 NSString *object = [[[NSString alloc] init] autorelease]; // no-warning 837 return; 838} 839 840//===----------------------------------------------------------------------===// 841// Method name that has a null IdentifierInfo* for its first selector slot. 842// This test just makes sure that we handle it. 843//===----------------------------------------------------------------------===// 844 845@interface TestNullIdentifier 846@end 847 848@implementation TestNullIdentifier 849+ (id):(int)x, ... { 850 return [[NSString alloc] init]; // expected-warning{{leak}} 851} 852@end 853 854//===----------------------------------------------------------------------===// 855// <rdar://problem/6893565> don't flag leaks for return types that cannot be 856// determined to be CF types 857//===----------------------------------------------------------------------===// 858 859// We don't know if 'struct s6893565' represents a Core Foundation type, so 860// we shouldn't emit an error here. 861typedef struct s6893565* TD6893565; 862 863@interface RDar6893565 {} 864-(TD6893565)newThing; 865@end 866 867@implementation RDar6893565 868-(TD6893565)newThing { 869 return (TD6893565) [[NSString alloc] init]; // no-warning 870} 871@end 872 873//===----------------------------------------------------------------------===// 874// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods 875//===----------------------------------------------------------------------===// 876 877void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context, 878 NSString *str, CIImage *img, CGRect rect, 879 CIFormat form, CGColorSpaceRef cs) { 880 [view createSnapshotImageOfType:str]; // expected-warning{{leak}} 881 [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}} 882 [context createCGImage:img fromRect:rect]; // expected-warning{{leak}} 883 [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}} 884} 885 886//===----------------------------------------------------------------------===// 887// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:] 888// misinterpreted by clang scan-build 889//===----------------------------------------------------------------------===// 890 891void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) { 892 [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}} 893} 894 895//===----------------------------------------------------------------------===// 896// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 897// checker 898//===----------------------------------------------------------------------===// 899 900void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options, const char * bsdName) { 901 IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}} 902} 903 904void IOServiceMatching_wrapper(const char * name) { 905 IOServiceMatching(name); // expected-warning{{leak}} 906} 907 908void IOServiceNameMatching_wrapper(const char * name) { 909 IOServiceNameMatching(name); // expected-warning{{leak}} 910} 911 912CF_RETURNS_RETAINED CFDictionaryRef CreateDict(); 913 914void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType, 915 mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) { 916 917 CFDictionaryRef matching = CreateDict(); 918 CFRelease(matching); 919 IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}} 920 wakePort, reference, notification); 921} 922 923void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) { 924 IORegistryEntryIDMatching(entryID); // expected-warning{{leak}} 925} 926 927void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options, 928 const char * path) { 929 IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}} 930} 931 932void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) { 933 CFDictionaryRef matching = CreateDict(); 934 IOServiceGetMatchingService(masterPort, matching); 935 CFRelease(matching); // expected-warning{{used after it is released}} 936} 937 938void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) { 939 CFDictionaryRef matching = CreateDict(); 940 IOServiceGetMatchingServices(masterPort, matching, existing); 941 CFRelease(matching); // expected-warning{{used after it is released}} 942} 943 944void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 945 IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) { 946 947 CFDictionaryRef matching = CreateDict(); 948 IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification); 949 CFRelease(matching); // expected-warning{{used after it is released}} 950} 951 952//===----------------------------------------------------------------------===// 953// Test of handling objects whose references "escape" to containers. 954//===----------------------------------------------------------------------===// 955 956void CFDictionaryAddValue(CFMutableDictionaryRef, void *, void *); 957 958// <rdar://problem/6539791> 959void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) { 960 CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); 961 CFDictionaryAddValue(y, key, x); 962 CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet 963 signed z = 1; 964 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 965 if (value) { 966 CFDictionaryAddValue(x, val_key, (void*)value); // no-warning 967 CFRelease(value); 968 CFDictionaryAddValue(y, val_key, (void*)value); // no-warning 969 } 970} 971 972// <rdar://problem/6560661> 973// Same issue, except with "AppendValue" functions. 974void rdar_6560661(CFMutableArrayRef x) { 975 signed z = 1; 976 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 977 // CFArrayAppendValue keeps a reference to value. 978 CFArrayAppendValue(x, value); 979 CFRelease(value); 980 CFRetain(value); 981 CFRelease(value); // no-warning 982} 983 984// <rdar://problem/7152619> 985// Same issue, excwept with "CFAttributeStringSetAttribute". 986void rdar_7152619(CFStringRef str) { 987 CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0); 988 CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string); 989 CFRelease(string); 990 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 991 CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number); 992 [number release]; 993 [number retain]; 994 CFRelease(attrString); 995} 996 997//===----------------------------------------------------------------------===// 998// Test of handling CGGradientXXX functions. 999//===----------------------------------------------------------------------===// 1000 1001void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1002 CGPoint myEndPoint) { 1003 size_t num_locations = 6; 1004 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1005 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1006 x, // Start color 1007 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1008 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1009 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1010 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1011 255.0/255.0,255.0/255.0, 255.0/255.0, x 1012 }; // End color 1013 1014 CGGradientRef myGradient = 1015 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}} 1016 components, locations, num_locations); 1017 1018 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1019 0); 1020 CGGradientRelease(myGradient); 1021} 1022 1023void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1024 CGPoint myEndPoint) { 1025 size_t num_locations = 6; 1026 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1027 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1028 x, // Start color 1029 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1030 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1031 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1032 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1033 255.0/255.0,255.0/255.0, 255.0/255.0, x 1034 }; // End color 1035 1036 CGGradientRef myGradient = 1037 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}} 1038 1039 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1040 0); 1041} 1042 1043//===----------------------------------------------------------------------===// 1044// <rdar://problem/7299394> clang false positive: retained instance passed to 1045// thread in pthread_create marked as leak 1046// 1047// Until we have full IPA, the analyzer should stop tracking the reference 1048// count of objects passed to pthread_create. 1049// 1050//===----------------------------------------------------------------------===// 1051 1052struct _opaque_pthread_t {}; 1053struct _opaque_pthread_attr_t {}; 1054typedef struct _opaque_pthread_t *__darwin_pthread_t; 1055typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t; 1056typedef __darwin_pthread_t pthread_t; 1057typedef __darwin_pthread_attr_t pthread_attr_t; 1058 1059int pthread_create(pthread_t *, const pthread_attr_t *, 1060 void *(*)(void *), void *); 1061 1062void *rdar_7299394_start_routine(void *p) { 1063 [((id) p) release]; 1064 return 0; 1065} 1066void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) { 1067 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1068 pthread_create(thread, attr, rdar_7299394_start_routine, number); 1069} 1070void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) { 1071 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1072} 1073 1074//===----------------------------------------------------------------------===// 1075// <rdar://problem/7283567> False leak associated with call to 1076// CVPixelBufferCreateWithBytes () 1077// 1078// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and 1079// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the 1080// pixel buffer object. These test cases show how the analyzer stops tracking 1081// the reference count for the objects passed for this argument. This 1082// could be made smarter. 1083//===----------------------------------------------------------------------===// 1084 1085typedef int int32_t; 1086typedef UInt32 FourCharCode; 1087typedef FourCharCode OSType; 1088typedef uint64_t CVOptionFlags; 1089typedef int32_t CVReturn; 1090typedef struct __CVBuffer *CVBufferRef; 1091typedef CVBufferRef CVImageBufferRef; 1092typedef CVImageBufferRef CVPixelBufferRef; 1093typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress ); 1094 1095extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1096 size_t width, 1097 size_t height, 1098 OSType pixelFormatType, 1099 void *baseAddress, 1100 size_t bytesPerRow, 1101 CVPixelBufferReleaseBytesCallback releaseCallback, 1102 void *releaseRefCon, 1103 CFDictionaryRef pixelBufferAttributes, 1104 CVPixelBufferRef *pixelBufferOut) ; 1105 1106typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] ); 1107 1108extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator, 1109 size_t width, 1110 size_t height, 1111 OSType pixelFormatType, 1112 void *dataPtr, 1113 size_t dataSize, 1114 size_t numberOfPlanes, 1115 void *planeBaseAddress[], 1116 size_t planeWidth[], 1117 size_t planeHeight[], 1118 size_t planeBytesPerRow[], 1119 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1120 void *releaseRefCon, 1121 CFDictionaryRef pixelBufferAttributes, 1122 CVPixelBufferRef *pixelBufferOut) ; 1123 1124extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1125 size_t width, 1126 size_t height, 1127 OSType pixelFormatType, 1128 void *baseAddress, 1129 size_t bytesPerRow, 1130 CVPixelBufferReleaseBytesCallback releaseCallback, 1131 void *releaseRefCon, 1132 CFDictionaryRef pixelBufferAttributes, 1133 CVPixelBufferRef *pixelBufferOut) ; 1134 1135CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height, 1136 OSType pixelFormatType, void *baseAddress, 1137 size_t bytesPerRow, 1138 CVPixelBufferReleaseBytesCallback releaseCallback, 1139 CFDictionaryRef pixelBufferAttributes, 1140 CVPixelBufferRef *pixelBufferOut) { 1141 1142 // For the allocated object, it doesn't really matter what type it is 1143 // for the purpose of this test. All we want to show is that 1144 // this is freed later by the callback. 1145 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1146 1147 return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType, 1148 baseAddress, bytesPerRow, releaseCallback, 1149 number, // potentially released by callback 1150 pixelBufferAttributes, pixelBufferOut) ; 1151} 1152 1153CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height, 1154 OSType pixelFormatType, void *dataPtr, size_t dataSize, 1155 size_t numberOfPlanes, void *planeBaseAddress[], 1156 size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[], 1157 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1158 CFDictionaryRef pixelBufferAttributes, 1159 CVPixelBufferRef *pixelBufferOut) { 1160 1161 // For the allocated object, it doesn't really matter what type it is 1162 // for the purpose of this test. All we want to show is that 1163 // this is freed later by the callback. 1164 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1165 1166 return CVPixelBufferCreateWithPlanarBytes(allocator, 1167 width, height, pixelFormatType, dataPtr, dataSize, 1168 numberOfPlanes, planeBaseAddress, planeWidth, 1169 planeHeight, planeBytesPerRow, releaseCallback, 1170 number, // potentially released by callback 1171 pixelBufferAttributes, pixelBufferOut) ; 1172} 1173 1174//===----------------------------------------------------------------------===// 1175// <rdar://problem/7358899> False leak associated with 1176// CGBitmapContextCreateWithData 1177//===----------------------------------------------------------------------===// 1178typedef uint32_t CGBitmapInfo; 1179typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data); 1180 1181CGContextRef CGBitmapContextCreateWithData(void *data, 1182 size_t width, size_t height, size_t bitsPerComponent, 1183 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1184 CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo); 1185 1186void rdar_7358899(void *data, 1187 size_t width, size_t height, size_t bitsPerComponent, 1188 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1189 CGBitmapContextReleaseDataCallback releaseCallback) { 1190 1191 // For the allocated object, it doesn't really matter what type it is 1192 // for the purpose of this test. All we want to show is that 1193 // this is freed later by the callback. 1194 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1195 1196 CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}} 1197 bytesPerRow, space, bitmapInfo, releaseCallback, number); 1198} 1199 1200//===----------------------------------------------------------------------===// 1201// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to 1202// start before '_' when determining Cocoa fundamental rule 1203// 1204// Previously the retain/release checker just skipped prefixes before the 1205// first '_' entirely. Now the checker honors the prefix if it results in a 1206// recognizable naming convention (e.g., 'new', 'init'). 1207//===----------------------------------------------------------------------===// 1208 1209@interface RDar7265711 {} 1210- (id) new_stuff; 1211@end 1212 1213void rdar7265711_a(RDar7265711 *x) { 1214 id y = [x new_stuff]; // expected-warning{{leak}} 1215} 1216 1217void rdar7265711_b(RDar7265711 *x) { 1218 id y = [x new_stuff]; // no-warning 1219 [y release]; 1220} 1221 1222//===----------------------------------------------------------------------===// 1223// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a 1224// retained reference 1225//===----------------------------------------------------------------------===// 1226 1227@interface NSCursor : NSObject 1228+ (NSCursor *)dragCopyCursor; 1229@end 1230 1231void rdar7306898(void) { 1232 // 'dragCopyCursor' does not follow Cocoa's fundamental rule. It is a noun, not an sentence 1233 // implying a 'copy' of something. 1234 NSCursor *c = [NSCursor dragCopyCursor]; // no-warning 1235 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1236} 1237 1238//===----------------------------------------------------------------------===// 1239// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class 1240// directly is not likely what the user intended 1241//===----------------------------------------------------------------------===// 1242 1243@interface RDar7252064 : NSObject @end 1244void rdar7252064(void) { 1245 [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1246 [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1247 [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1248 [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}} 1249} 1250 1251//===----------------------------------------------------------------------===// 1252// Tests of ownership attributes. 1253//===----------------------------------------------------------------------===// 1254 1255typedef NSString* MyStringTy; 1256 1257@protocol FooP; 1258 1259@interface TestOwnershipAttr : NSObject 1260- (NSString*) returnsAnOwnedString NS_RETURNS_RETAINED; // no-warning 1261- (NSString*) returnsAnOwnedCFString CF_RETURNS_RETAINED; // no-warning 1262- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning 1263- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning 1264- (NSString*) newStringNoAttr; 1265- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}} 1266- (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED; 1267+ (void) consume:(id) NS_CONSUMED x; 1268+ (void) consume2:(id) CF_CONSUMED x; 1269@end 1270 1271static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions and methods}} 1272 1273void test_attr_1(TestOwnershipAttr *X) { 1274 NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}} 1275} 1276 1277void test_attr_1b(TestOwnershipAttr *X) { 1278 NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}} 1279} 1280 1281void test_attr1c(TestOwnershipAttr *X) { 1282 NSString *str = [X newString]; // no-warning 1283 NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}} 1284} 1285 1286void testattr2_a() { 1287 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}} 1288} 1289 1290void testattr2_b() { 1291 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // expected-warning{{leak}} 1292} 1293 1294void testattr2_c() { 1295 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning 1296 [x release]; 1297} 1298 1299void testattr3() { 1300 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1301 [TestOwnershipAttr consume:x]; 1302 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1303 [TestOwnershipAttr consume2:y]; 1304} 1305 1306void consume_ns(id NS_CONSUMED x); 1307void consume_cf(id CF_CONSUMED x); 1308 1309void testattr4() { 1310 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1311 consume_ns(x); 1312 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1313 consume_cf(y); 1314} 1315 1316 1317@interface MyClassTestCFAttr : NSObject {} 1318- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED; 1319- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED; 1320- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED; 1321- (CFDateRef) newCFRetainedAsCFNoAttr; 1322- (NSDate*) alsoReturnsRetained; 1323- (CFDateRef) alsoReturnsRetainedAsCF; 1324- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED; 1325@end 1326 1327CF_RETURNS_RETAINED 1328CFDateRef returnsRetainedCFDate() { 1329 return CFDateCreate(0, CFAbsoluteTimeGetCurrent()); 1330} 1331 1332@implementation MyClassTestCFAttr 1333- (NSDate*) returnsCFRetained { 1334 return (NSDate*) returnsRetainedCFDate(); // No leak. 1335} 1336 1337- (CFDateRef) returnsCFRetainedAsCF { 1338 return returnsRetainedCFDate(); // No leak. 1339} 1340 1341- (CFDateRef) newCFRetainedAsCF { 1342 return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; 1343} 1344 1345- (CFDateRef) newCFRetainedAsCFNoAttr { 1346 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}} 1347} 1348 1349- (NSDate*) alsoReturnsRetained { 1350 return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}} 1351} 1352 1353- (CFDateRef) alsoReturnsRetainedAsCF { 1354 return returnsRetainedCFDate(); // expected-warning{{leak}} 1355} 1356 1357 1358- (NSDate*) returnsNSRetained { 1359 return (NSDate*) returnsRetainedCFDate(); // no-warning 1360} 1361@end 1362 1363//===----------------------------------------------------------------------===// 1364// Test that leaks post-dominated by "panic" functions are not reported. 1365// 1366// <rdar://problem/5905851> do not report a leak when post-dominated by a call 1367// to a noreturn or panic function 1368//===----------------------------------------------------------------------===// 1369 1370void panic() __attribute__((noreturn)); 1371void panic_not_in_hardcoded_list() __attribute__((noreturn)); 1372 1373void test_panic_negative() { 1374 signed z = 1; 1375 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1376} 1377 1378void test_panic_positive() { 1379 signed z = 1; 1380 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1381 panic(); 1382} 1383 1384void test_panic_neg_2(int x) { 1385 signed z = 1; 1386 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1387 if (x) 1388 panic(); 1389} 1390 1391void test_panic_pos_2(int x) { 1392 signed z = 1; 1393 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1394 if (x) 1395 panic(); 1396 if (!x) { 1397 // This showed up in <rdar://problem/7796563>, where we silently missed checking 1398 // the function type for noreturn. "panic()" is a hard-coded known panic function 1399 // that isn't always noreturn. 1400 panic_not_in_hardcoded_list(); 1401 } 1402} 1403 1404//===----------------------------------------------------------------------===// 1405// Test uses of blocks (closures) 1406//===----------------------------------------------------------------------===// 1407 1408void test_blocks_1_pos(void) { 1409 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1410 ^{}(); 1411} 1412 1413void test_blocks_1_indirect_release(void) { 1414 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1415 ^{ [number release]; }(); 1416} 1417 1418void test_blocks_1_indirect_retain(void) { 1419 // Eventually this should be reported as a leak. 1420 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1421 ^{ [number retain]; }(); 1422} 1423 1424void test_blocks_1_indirect_release_via_call(void) { 1425 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1426 ^(NSObject *o){ [o release]; }(number); 1427} 1428 1429void test_blocks_1_indirect_retain_via_call(void) { 1430 // Eventually this should be reported as a leak. 1431 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1432 ^(NSObject *o){ [o retain]; }(number); 1433} 1434 1435//===--------------------------------------------------------------------===// 1436// Test sending message to super that returns an object alias. Previously 1437// this caused a crash in the analyzer. 1438//===--------------------------------------------------------------------===// 1439 1440@interface Rdar8015556 : NSObject {} @end 1441@implementation Rdar8015556 1442- (id)retain { 1443 return [super retain]; 1444} 1445@end 1446 1447// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions 1448// detector. 1449 1450@protocol Prot_R8272168 @end 1451Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168(); 1452void r8272168() { 1453 GetAClassThatImplementsProt_R8272168(); 1454} 1455 1456// Test case for <rdar://problem/8356342>, which in the past triggered 1457// a false positive. 1458@interface RDar8356342 1459- (NSDate*) rdar8356342:(NSDate *)inValue; 1460@end 1461 1462@implementation RDar8356342 1463- (NSDate*) rdar8356342:(NSDate*)inValue { 1464 NSDate *outValue = inValue; 1465 if (outValue == 0) 1466 outValue = [[NSDate alloc] init]; // no-warning 1467 1468 if (outValue != inValue) 1469 [outValue autorelease]; 1470 1471 return outValue; 1472} 1473@end 1474 1475// <rdar://problem/8724287> - This test case previously crashed because 1476// of a bug in BugReporter. 1477extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key); 1478typedef struct __CFError * CFErrorRef; 1479extern const CFStringRef kCFErrorUnderlyingErrorKey; 1480extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err); 1481static void rdar_8724287(CFErrorRef error) 1482{ 1483 CFErrorRef error_to_dump; 1484 1485 error_to_dump = error; 1486 while (error_to_dump != ((void*)0)) { 1487 CFDictionaryRef info; 1488 1489 info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object}} 1490 1491 if (info != ((void*)0)) { 1492 } 1493 1494 error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey); 1495 } 1496} 1497 1498// <rdar://problem/9234108> - Make sure the model applies cf_consumed 1499// correctly in argument positions besides the first. 1500extern void *CFStringCreate(void); 1501extern void rdar_9234108_helper(void *key, void * CF_CONSUMED value); 1502void rdar_9234108() { 1503 rdar_9234108_helper(0, CFStringCreate()); 1504} 1505 1506// <rdar://problem/9726279> - Make sure that objc_method_family works 1507// to override naming conventions. 1508struct TwoDoubles { 1509 double one; 1510 double two; 1511}; 1512typedef struct TwoDoubles TwoDoubles; 1513 1514@interface NSValue (Mine) 1515- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles __attribute__((objc_method_family(init))); 1516@end 1517 1518@implementation NSValue (Mine) 1519- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles 1520{ 1521 return [self init]; 1522} 1523@end 1524 1525void rdar9726279() { 1526 TwoDoubles twoDoubles = { 0.0, 0.0 }; 1527 NSValue *value = [[NSValue alloc] _prefix_initWithTwoDoubles:twoDoubles]; 1528 [value release]; 1529} 1530 1531// <rdar://problem/9732321> 1532// Test camelcase support for CF conventions. While Core Foundation APIs 1533// don't use camel casing, other code is allowed to use it. 1534CFArrayRef camelcase_create_1() { 1535 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1536} 1537 1538CFArrayRef camelcase_createno() { 1539 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1540} 1541 1542CFArrayRef camelcase_copy() { 1543 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1544} 1545 1546CFArrayRef camelcase_copying() { 1547 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1548} 1549 1550CFArrayRef copyCamelCase() { 1551 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1552} 1553 1554CFArrayRef __copyCamelCase() { 1555 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1556} 1557 1558CFArrayRef __createCamelCase() { 1559 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1560} 1561 1562CFArrayRef camel_create() { 1563 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1564} 1565 1566 1567CFArrayRef camel_creat() { 1568 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1569} 1570 1571CFArrayRef camel_copy() { 1572 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1573} 1574 1575CFArrayRef camel_copyMachine() { 1576 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1577} 1578 1579CFArrayRef camel_copymachine() { 1580 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1581} 1582 1583// rdar://problem/8024350 1584@protocol F18P 1585- (id) clone; 1586@end 1587@interface F18 : NSObject<F18P> @end 1588@interface F18(Cat) 1589- (id) clone NS_RETURNS_RETAINED; 1590@end 1591 1592@implementation F18 1593- (id) clone { 1594 return [F18 alloc]; 1595} 1596@end 1597 1598// Radar 6582778. 1599void rdar6582778(void) { 1600 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1601 CFTypeRef vals[] = { CFDateCreate(0, t) }; // expected-warning {{leak}} 1602} 1603 1604CFTypeRef global; 1605 1606void rdar6582778_2(void) { 1607 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1608 global = CFDateCreate(0, t); // no-warning 1609} 1610 1611// <rdar://problem/10232019> - Test that objects passed to containers 1612// are marked "escaped". 1613 1614void rdar10232019() { 1615 NSMutableArray *array = [NSMutableArray array]; 1616 1617 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1618 [array addObject:string]; 1619 [string release]; 1620 1621 NSString *otherString = [string stringByAppendingString:@"bar"]; // no-warning 1622 NSLog(@"%@", otherString); 1623} 1624 1625void rdar10232019_positive() { 1626 NSMutableArray *array = [NSMutableArray array]; 1627 1628 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1629 [string release]; 1630 1631 NSString *otherString = [string stringByAppendingString:@"bar"]; // expected-warning {{Reference-counted object is used after it is release}} 1632 NSLog(@"%@", otherString); 1633} 1634 1635// RetainCountChecker support for XPC. 1636// <rdar://problem/9658496> 1637typedef void * xpc_object_t; 1638xpc_object_t _CFXPCCreateXPCObjectFromCFObject(CFTypeRef cf); 1639void xpc_release(xpc_object_t object); 1640 1641void rdar9658496() { 1642 CFStringRef cf; 1643 xpc_object_t xpc; 1644 cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1645 xpc = _CFXPCCreateXPCObjectFromCFObject( cf ); 1646 CFRelease(cf); 1647 xpc_release(xpc); 1648} 1649 1650// Support annotations with method families. 1651@interface RDar10824732 : NSObject 1652- (id)initWithObj:(id CF_CONSUMED)obj; 1653@end 1654 1655@implementation RDar10824732 1656- (id)initWithObj:(id)obj { 1657 [obj release]; 1658 return [super init]; 1659} 1660@end 1661 1662void rdar_10824732() { 1663 @autoreleasepool { 1664 NSString *obj = @"test"; 1665 RDar10824732 *foo = [[RDar10824732 alloc] initWithObj:obj]; // no-warning 1666 [foo release]; 1667 } 1668} 1669 1670//===----------------------------------------------------------------------===// 1671// Test returning allocated memory in a struct. 1672// 1673// We currently don't have a general way to track pointers that "escape". 1674// Here we test that RetainCountChecker doesn't get excited about returning 1675// allocated CF objects in struct fields. 1676//===----------------------------------------------------------------------===// 1677void *malloc(size_t); 1678struct rdar11104566 { CFStringRef myStr; }; 1679struct rdar11104566 test_rdar11104566() { 1680 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1681 struct rdar11104566 V; 1682 V.myStr = cf; 1683 return V; // no-warning 1684} 1685 1686struct rdar11104566 *test_2_rdar11104566() { 1687 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1688 struct rdar11104566 *V = (struct rdar11104566 *) malloc(sizeof(*V)); 1689 V->myStr = cf; 1690 return V; // no-warning 1691} 1692 1693//===----------------------------------------------------------------------===// 1694// ObjC literals support. 1695//===----------------------------------------------------------------------===// 1696 1697void test_objc_arrays() { 1698 { // CASE ONE -- OBJECT IN ARRAY CREATED DIRECTLY 1699 NSObject *o = [[NSObject alloc] init]; 1700 NSArray *a = [[NSArray alloc] initWithObjects:o, (void*)0]; // expected-warning {{leak}} 1701 [o release]; 1702 [a description]; 1703 [o description]; 1704 } 1705 1706 { // CASE TWO -- OBJECT IN ARRAY CREATED BY DUPING AUTORELEASED ARRAY 1707 NSObject *o = [[NSObject alloc] init]; 1708 NSArray *a1 = [NSArray arrayWithObjects:o, (void*)0]; 1709 NSArray *a2 = [[NSArray alloc] initWithArray:a1]; // expected-warning {{leak}} 1710 [o release]; 1711 [a2 description]; 1712 [o description]; 1713 } 1714 1715 { // CASE THREE -- OBJECT IN RETAINED @[] 1716 NSObject *o = [[NSObject alloc] init]; 1717 NSArray *a3 = [@[o] retain]; // expected-warning {{leak}} 1718 [o release]; 1719 [a3 description]; 1720 [o description]; 1721 } 1722 1723 { // CASE FOUR -- OBJECT IN ARRAY CREATED BY DUPING @[] 1724 NSObject *o = [[NSObject alloc] init]; 1725 NSArray *a = [[NSArray alloc] initWithArray:@[o]]; // expected-warning {{leak}} 1726 [o release]; 1727 1728 [a description]; 1729 [o description]; 1730 } 1731 1732 { // CASE FIVE -- OBJECT IN RETAINED @{} 1733 NSValue *o = [[NSValue alloc] init]; 1734 NSDictionary *a = [@{o : o} retain]; // expected-warning {{leak}} 1735 [o release]; 1736 1737 [a description]; 1738 [o description]; 1739 } 1740} 1741 1742