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