1// RUN: rm -f %t.objc.plist %t.objcpp.plist 2// RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10\ 3// RUN: -analyzer-checker=core,osx.coreFoundation.CFRetainRelease\ 4// RUN: -analyzer-checker=osx.cocoa.ClassRelease,osx.cocoa.RetainCount\ 5// RUN: -analyzer-checker=debug.ExprInspection -fblocks -verify %s\ 6// RUN: -Wno-objc-root-class -analyzer-output=plist -o %t.objc.plist 7// RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10\ 8// RUN: -analyzer-checker=core,osx.coreFoundation.CFRetainRelease\ 9// RUN: -analyzer-checker=osx.cocoa.ClassRelease,osx.cocoa.RetainCount\ 10// RUN: -analyzer-checker=debug.ExprInspection -fblocks -verify %s\ 11// RUN: -Wno-objc-root-class -analyzer-output=plist -o %t.objcpp.plist\ 12// RUN: -x objective-c++ -std=gnu++98 13// RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10\ 14// RUN: -analyzer-checker=core,osx.coreFoundation.CFRetainRelease\ 15// RUN: -analyzer-checker=osx.cocoa.ClassRelease,osx.cocoa.RetainCount\ 16// RUN: -analyzer-checker=debug.ExprInspection -fblocks -verify %s\ 17// RUN: -Wno-objc-root-class -x objective-c++ -std=gnu++98\ 18// RUN: -analyzer-config osx.cocoa.RetainCount:TrackNSCFStartParam=true\ 19// RUN: -DTRACK_START_PARAM 20// RUN: %normalize_plist <%t.objcpp.plist | diff -ub %S/Inputs/expected-plists/retain-release.m.objcpp.plist - 21// RUN: %normalize_plist <%t.objc.plist | diff -ub %S/Inputs/expected-plists/retain-release.m.objc.plist - 22 23void clang_analyzer_eval(int); 24 25#if __has_feature(attribute_ns_returns_retained) 26#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained)) 27#endif 28#if __has_feature(attribute_cf_returns_retained) 29#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained)) 30#endif 31#if __has_feature(attribute_ns_returns_not_retained) 32#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained)) 33#endif 34#if __has_feature(attribute_cf_returns_not_retained) 35#define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained)) 36#endif 37#if __has_feature(attribute_ns_consumes_self) 38#define NS_CONSUMES_SELF __attribute__((ns_consumes_self)) 39#endif 40#if __has_feature(attribute_ns_consumed) 41#define NS_CONSUMED __attribute__((ns_consumed)) 42#endif 43#if __has_feature(attribute_cf_consumed) 44#define CF_CONSUMED __attribute__((cf_consumed)) 45#endif 46#if __has_attribute(ns_returns_autoreleased) 47#define NS_RETURNS_AUTORELEASED __attribute__((ns_returns_autoreleased)) 48#endif 49 50//===----------------------------------------------------------------------===// 51// The following code is reduced using delta-debugging from Mac OS X headers: 52// 53// #include <Cocoa/Cocoa.h> 54// #include <CoreFoundation/CoreFoundation.h> 55// #include <DiskArbitration/DiskArbitration.h> 56// #include <QuartzCore/QuartzCore.h> 57// #include <Quartz/Quartz.h> 58// #include <IOKit/IOKitLib.h> 59// 60// It includes the basic definitions for the test cases below. 61//===----------------------------------------------------------------------===// 62 63typedef unsigned int __darwin_natural_t; 64typedef unsigned long uintptr_t; 65typedef unsigned int uint32_t; 66typedef unsigned long long uint64_t; 67typedef unsigned int UInt32; 68typedef signed long CFIndex; 69typedef CFIndex CFByteOrder; 70typedef struct { 71 CFIndex location; 72 CFIndex length; 73} CFRange; 74static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) { 75 CFRange range; 76 range.location = loc; 77 range.length = len; 78 return range; 79} 80typedef const void * CFTypeRef; 81typedef const struct __CFString * CFStringRef; 82typedef const struct __CFAllocator * CFAllocatorRef; 83extern const CFAllocatorRef kCFAllocatorDefault; 84 85extern CFTypeRef CFRetain(CFTypeRef cf); 86extern void CFRelease(CFTypeRef cf); 87extern CFTypeRef CFMakeCollectable(CFTypeRef cf); 88extern CFTypeRef CFAutorelease(CFTypeRef CF_CONSUMED cf); 89 90typedef struct { 91} 92CFArrayCallBacks; 93extern const CFArrayCallBacks kCFTypeArrayCallBacks; 94typedef const struct __CFArray * CFArrayRef; 95typedef struct __CFArray * CFMutableArrayRef; 96extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks); 97extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx); 98extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value); 99typedef struct { 100} 101CFDictionaryKeyCallBacks; 102extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks; 103typedef struct { 104} 105CFDictionaryValueCallBacks; 106extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks; 107typedef const struct __CFDictionary * CFDictionaryRef; 108typedef struct __CFDictionary * CFMutableDictionaryRef; 109extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks); 110typedef UInt32 CFStringEncoding; 111enum { 112kCFStringEncodingMacRoman = 0, kCFStringEncodingWindowsLatin1 = 0x0500, kCFStringEncodingISOLatin1 = 0x0201, kCFStringEncodingNextStepLatin = 0x0B01, kCFStringEncodingASCII = 0x0600, kCFStringEncodingUnicode = 0x0100, kCFStringEncodingUTF8 = 0x08000100, kCFStringEncodingNonLossyASCII = 0x0BFF , kCFStringEncodingUTF16 = 0x0100, kCFStringEncodingUTF16BE = 0x10000100, kCFStringEncodingUTF16LE = 0x14000100, kCFStringEncodingUTF32 = 0x0c000100, kCFStringEncodingUTF32BE = 0x18000100, kCFStringEncodingUTF32LE = 0x1c000100 }; 113extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding); 114typedef double CFTimeInterval; 115typedef CFTimeInterval CFAbsoluteTime; 116extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void); 117typedef const struct __CFDate * CFDateRef; 118extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at); 119extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate); 120typedef __darwin_natural_t natural_t; 121typedef natural_t mach_port_name_t; 122typedef mach_port_name_t mach_port_t; 123typedef int kern_return_t; 124typedef kern_return_t mach_error_t; 125enum { 126kCFNumberSInt8Type = 1, kCFNumberSInt16Type = 2, kCFNumberSInt32Type = 3, kCFNumberSInt64Type = 4, kCFNumberFloat32Type = 5, kCFNumberFloat64Type = 6, kCFNumberCharType = 7, kCFNumberShortType = 8, kCFNumberIntType = 9, kCFNumberLongType = 10, kCFNumberLongLongType = 11, kCFNumberFloatType = 12, kCFNumberDoubleType = 13, kCFNumberCFIndexType = 14, kCFNumberNSIntegerType = 15, kCFNumberCGFloatType = 16, kCFNumberMaxType = 16 }; 127typedef CFIndex CFNumberType; 128typedef const struct __CFNumber * CFNumberRef; 129extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr); 130typedef const struct __CFAttributedString *CFAttributedStringRef; 131typedef struct __CFAttributedString *CFMutableAttributedStringRef; 132extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ; 133extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ; 134extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ; 135typedef signed char BOOL; 136typedef unsigned long NSUInteger; 137@class NSString, Protocol; 138extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2))); 139typedef struct _NSZone NSZone; 140@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; 141@protocol NSObject 142- (BOOL)isEqual:(id)object; 143- (id)retain; 144- (oneway void)release; 145- (id)autorelease; 146- (NSString *)description; 147- (id)init; 148@end 149@protocol NSCopying 150- (id)copyWithZone:(NSZone *)zone; 151@end 152@protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; 153@end 154@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; 155@end 156@interface NSObject <NSObject> {} 157+ (id)allocWithZone:(NSZone *)zone; 158+ (id)alloc; 159+ (id)new; 160- (void)dealloc; 161@end 162@interface NSObject (NSCoderMethods) 163- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder; 164@end 165extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone); 166typedef struct { 167} 168NSFastEnumerationState; 169@protocol NSFastEnumeration 170- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len; 171@end 172@class NSString, NSDictionary; 173@interface NSValue : NSObject <NSCopying, NSCoding> - (void)getValue:(void *)value; 174@end 175@interface NSNumber : NSValue 176- (char)charValue; 177- (id)initWithInt:(int)value; 178+ (NSNumber *)numberWithInt:(int)value; 179@end 180@class NSString; 181@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 182- (NSUInteger)count; 183- (id)initWithObjects:(const id [])objects count:(NSUInteger)cnt; 184+ (id)arrayWithObject:(id)anObject; 185+ (id)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt; 186+ (id)arrayWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 187- (id)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 188- (id)initWithArray:(NSArray *)array; 189@end @interface NSArray (NSArrayCreation) + (id)array; 190@end @interface NSAutoreleasePool : NSObject { 191} 192- (void)drain; 193@end extern NSString * const NSBundleDidLoadNotification; 194typedef double NSTimeInterval; 195@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; 196@end typedef unsigned short unichar; 197@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> 198- (NSUInteger)length; 199- (NSString *)stringByAppendingString:(NSString *)aString; 200- ( const char *)UTF8String; 201- (id)initWithUTF8String:(const char *)nullTerminatedCString; 202+ (id)stringWithUTF8String:(const char *)nullTerminatedCString; 203@end @class NSString, NSURL, NSError; 204@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length; 205+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length; 206+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b; 207@end @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary; 208@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 209- (NSUInteger)count; 210+ (id)dictionaryWithObjects:(NSArray *)objects forKeys:(NSArray *)keys; 211+ (id)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt; 212@end 213@interface NSMutableDictionary : NSDictionary - (void)removeObjectForKey:(id)aKey; 214- (void)setObject:(id)anObject forKey:(id)aKey; 215@end 216@interface NSMutableDictionary (NSMutableDictionaryCreation) + (id)dictionaryWithCapacity:(NSUInteger)numItems; 217@end 218 219@interface NSNull : NSObject 220+ (NSNull*) null; 221@end 222 223typedef double CGFloat; 224struct CGSize { 225}; 226typedef struct CGSize CGSize; 227struct CGRect { 228}; 229typedef struct CGRect CGRect; 230typedef mach_port_t io_object_t; 231typedef char io_name_t[128]; 232typedef io_object_t io_iterator_t; 233typedef io_object_t io_service_t; 234typedef struct IONotificationPort * IONotificationPortRef; 235typedef void (*IOServiceMatchingCallback)( void * refcon, io_iterator_t iterator ); 236io_service_t IOServiceGetMatchingService( mach_port_t masterPort, CFDictionaryRef matching ); 237kern_return_t IOServiceGetMatchingServices( mach_port_t masterPort, CFDictionaryRef matching, io_iterator_t * existing ); 238kern_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' has been explicitly marked deprecated here}} 239kern_return_t IOServiceAddMatchingNotification( IONotificationPortRef notifyPort, const io_name_t notificationType, CFDictionaryRef matching, IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification ); 240CFMutableDictionaryRef IOServiceMatching( const char * name ); 241CFMutableDictionaryRef IOServiceNameMatching( const char * name ); 242CFMutableDictionaryRef IOBSDNameMatching( mach_port_t masterPort, uint32_t options, const char * bsdName ); 243CFMutableDictionaryRef IOOpenFirmwarePathMatching( mach_port_t masterPort, uint32_t options, const char * path ); 244CFMutableDictionaryRef IORegistryEntryIDMatching( uint64_t entryID ); 245typedef struct __DASession * DASessionRef; 246extern DASessionRef DASessionCreate( CFAllocatorRef allocator ); 247typedef struct __DADisk * DADiskRef; 248extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name ); 249extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media ); 250extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk ); 251extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk ); 252@interface NSTask : NSObject - (id)init; 253@end typedef struct CGColorSpace *CGColorSpaceRef; 254typedef struct CGImage *CGImageRef; 255typedef struct CGLayer *CGLayerRef; 256@interface NSResponder : NSObject <NSCoding> { 257} 258@end @protocol NSAnimatablePropertyContainer - (id)animator; 259@end extern NSString *NSAnimationTriggerOrderIn ; 260@interface NSView : NSResponder <NSAnimatablePropertyContainer> { 261} 262@end @protocol NSValidatedUserInterfaceItem - (SEL)action; 263@end @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem; 264@end @class NSDate, NSDictionary, NSError, NSException, NSNotification; 265@class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError; 266@interface NSApplication : NSResponder <NSUserInterfaceValidations> { 267} 268- (void)beginSheet:(NSWindow *)sheet modalForWindow:(NSWindow *)docWindow modalDelegate:(id)modalDelegate didEndSelector:(SEL)didEndSelector contextInfo:(void *)contextInfo; 269@end enum { 270NSTerminateCancel = 0, NSTerminateNow = 1, NSTerminateLater = 2 }; 271typedef NSUInteger NSApplicationTerminateReply; 272@protocol NSApplicationDelegate <NSObject> @optional - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender; 273@end @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView; 274@interface NSCell : NSObject <NSCopying, NSCoding> { 275} 276@end 277typedef struct { 278} 279CVTimeStamp; 280@interface CIImage : NSObject <NSCoding, NSCopying> { 281} 282typedef int CIFormat; 283@end enum { 284kDAReturnSuccess = 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 }; 285typedef mach_error_t DAReturn; 286typedef const struct __DADissenter * DADissenterRef; 287extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string ); 288@interface CIContext: NSObject { 289} 290- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r; 291- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs; 292- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d; 293@end extern NSString* const QCRendererEventKey; 294@protocol QCCompositionRenderer - (NSDictionary*) attributes; 295@end @interface QCRenderer : NSObject <QCCompositionRenderer> { 296} 297- (id) createSnapshotImageOfType:(NSString*)type; 298@end extern NSString* const QCViewDidStartRenderingNotification; 299@interface QCView : NSView <QCCompositionRenderer> { 300} 301- (id) createSnapshotImageOfType:(NSString*)type; 302@end enum { 303ICEXIFOrientation1 = 1, ICEXIFOrientation2 = 2, ICEXIFOrientation3 = 3, ICEXIFOrientation4 = 4, ICEXIFOrientation5 = 5, ICEXIFOrientation6 = 6, ICEXIFOrientation7 = 7, ICEXIFOrientation8 = 8, }; 304@class ICDevice; 305@protocol ICDeviceDelegate <NSObject> @required - (void)didRemoveDevice:(ICDevice*)device; 306@end extern NSString *const ICScannerStatusWarmingUp; 307@class ICScannerDevice; 308@protocol ICScannerDeviceDelegate <ICDeviceDelegate> @optional - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner; 309@end 310 311typedef long unsigned int __darwin_size_t; 312typedef __darwin_size_t size_t; 313typedef unsigned long CFTypeID; 314struct CGPoint { 315 CGFloat x; 316 CGFloat y; 317}; 318typedef struct CGPoint CGPoint; 319typedef struct CGGradient *CGGradientRef; 320typedef uint32_t CGGradientDrawingOptions; 321extern CFTypeID CGGradientGetTypeID(void); 322extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef 323 space, const CGFloat components[], const CGFloat locations[], size_t count); 324extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space, 325 CFArrayRef colors, const CGFloat locations[]); 326extern CGGradientRef CGGradientRetain(CGGradientRef gradient); 327extern void CGGradientRelease(CGGradientRef gradient); 328typedef struct CGContext *CGContextRef; 329extern void CGContextDrawLinearGradient(CGContextRef context, 330 CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint, 331 CGGradientDrawingOptions options); 332extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void); 333 334@interface NSMutableArray : NSObject 335- (void)addObject:(id)object; 336+ (id)array; 337@end 338 339// This is how NSMakeCollectable is declared in the OS X 10.8 headers. 340id NSMakeCollectable(CFTypeRef __attribute__((cf_consumed))) __attribute__((ns_returns_retained)); 341 342typedef const struct __CFUUID * CFUUIDRef; 343 344extern 345void *CFPlugInInstanceCreate(CFAllocatorRef allocator, CFUUIDRef factoryUUID, CFUUIDRef typeUUID); 346typedef struct { 347 int ref; 348} isl_basic_map; 349 350//===----------------------------------------------------------------------===// 351// Test cases. 352//===----------------------------------------------------------------------===// 353 354CFAbsoluteTime f1() { 355 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 356 CFDateRef date = CFDateCreate(0, t); 357 CFRetain(date); 358 CFRelease(date); 359 CFDateGetAbsoluteTime(date); // no-warning 360 CFRelease(date); 361 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 362 return t; 363} 364 365CFAbsoluteTime f2() { 366 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 367 CFDateRef date = CFDateCreate(0, t); 368 [((NSDate*) date) retain]; 369 CFRelease(date); 370 CFDateGetAbsoluteTime(date); // no-warning 371 [((NSDate*) date) release]; 372 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 373 return t; 374} 375 376 377NSDate* global_x; 378 379// Test to see if we suppress an error when we store the pointer 380// to a global. 381 382CFAbsoluteTime f3() { 383 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 384 CFDateRef date = CFDateCreate(0, t); 385 [((NSDate*) date) retain]; 386 CFRelease(date); 387 CFDateGetAbsoluteTime(date); // no-warning 388 global_x = (NSDate*) date; 389 [((NSDate*) date) release]; 390 t = CFDateGetAbsoluteTime(date); // no-warning 391 return t; 392} 393 394//--------------------------------------------------------------------------- 395// Test case 'f4' differs for region store and basic store. See 396// retain-release-region-store.m and retain-release-basic-store.m. 397//--------------------------------------------------------------------------- 398 399// Test a leak. 400 401CFAbsoluteTime f5(int x) { 402 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 403 CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}} 404 405 if (x) 406 CFRelease(date); 407 408 return t; 409} 410 411// Test a leak involving the return. 412 413CFDateRef f6(int x) { 414 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning{{leak}} 415 CFRetain(date); 416 return date; 417} 418 419// Test a leak involving an overwrite. 420 421CFDateRef f7() { 422 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); //expected-warning{{leak}} 423 CFRetain(date); 424 date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning {{leak}} 425 return date; 426} 427 428// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and 429// has the word create. 430CFDateRef MyDateCreate(); 431 432CFDateRef f8() { 433 CFDateRef date = MyDateCreate(); // expected-warning{{leak}} 434 CFRetain(date); 435 return date; 436} 437 438__attribute__((cf_returns_retained)) CFDateRef f9() { 439 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // no-warning 440 int *p = 0; 441 // When allocations fail, CFDateCreate can return null. 442 if (!date) *p = 1; // expected-warning{{null}} 443 return date; 444} 445 446// Handle DiskArbitration API: 447// 448// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/ 449// 450void f10(io_service_t media, DADiskRef d, CFStringRef s) { 451 DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}} 452 if (disk) NSLog(@"ok"); 453 454 disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}} 455 if (disk) NSLog(@"ok"); 456 457 CFDictionaryRef dict = DADiskCopyDescription(d); // expected-warning{{leak}} 458 if (dict) NSLog(@"ok"); 459 460 disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}} 461 if (disk) NSLog(@"ok"); 462 463 DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault, // expected-warning{{leak}} 464 kDAReturnSuccess, s); 465 if (dissenter) NSLog(@"ok"); 466 467 DASessionRef session = DASessionCreate(kCFAllocatorDefault); // expected-warning{{leak}} 468 if (session) NSLog(@"ok"); 469} 470 471 472// Handle CoreMedia API 473 474struct CMFoo; 475typedef struct CMFoo *CMFooRef; 476 477CMFooRef CMCreateFooRef(); 478CMFooRef CMGetFooRef(); 479 480typedef signed long SInt32; 481typedef SInt32 OSStatus; 482OSStatus CMCreateFooAndReturnViaOutParameter(CMFooRef * CF_RETURNS_RETAINED fooOut); 483 484void testLeakCoreMediaReferenceType() { 485 CMFooRef f = CMCreateFooRef(); // expected-warning{{leak}} 486} 487 488void testOverReleaseMediaReferenceType() { 489 CMFooRef f = CMGetFooRef(); 490 CFRelease(f); // expected-warning{{Incorrect decrement of the reference count}} 491} 492 493void testOkToReleaseReturnsRetainedOutParameter() { 494 CMFooRef foo = 0; 495 OSStatus status = CMCreateFooAndReturnViaOutParameter(&foo); 496 497 if (status != 0) 498 return; 499 500 CFRelease(foo); // no-warning 501} 502 503void testLeakWithReturnsRetainedOutParameter() { 504 CMFooRef foo = 0; 505 OSStatus status = CMCreateFooAndReturnViaOutParameter(&foo); 506 507 if (status != 0) 508 return; 509 510 // FIXME: Ideally we would report a leak here since it is the caller's 511 // responsibility to release 'foo'. However, we don't currently have 512 // a mechanism in this checker to only require a release when a successful 513 // status is returned. 514} 515 516typedef CFTypeRef CMBufferRef; 517 518typedef CFTypeRef *CMBufferQueueRef; 519 520CMBufferRef CMBufferQueueDequeueAndRetain(CMBufferQueueRef); 521 522void testCMBufferQueueDequeueAndRetain(CMBufferQueueRef queue) { 523 CMBufferRef buffer = CMBufferQueueDequeueAndRetain(queue); // expected-warning{{Potential leak of an object stored into 'buffer'}} 524 // There's a state split due to the eagerly-assume behavior. 525 // The point here is that we don't treat CMBufferQueueDequeueAndRetain 526 // as some sort of CFRetain() that returns its argument. 527 clang_analyzer_eval((CMFooRef)buffer == (CMFooRef)queue); // expected-warning{{TRUE}} 528 // expected-warning@-1{{FALSE}} 529} 530 531// Test retain/release checker with CFString and CFMutableArray. 532void f11() { 533 // Create the array. 534 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 535 536 // Create a string. 537 CFStringRef s1 = CFStringCreateWithCString(0, "hello world", 538 kCFStringEncodingUTF8); 539 540 // Add the string to the array. 541 CFArrayAppendValue(A, s1); 542 543 // Decrement the reference count. 544 CFRelease(s1); // no-warning 545 546 // Get the string. We don't own it. 547 s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0); 548 549 // Release the array. 550 CFRelease(A); // no-warning 551 552 // Release the string. This is a bug. 553 CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}} 554} 555 556// PR 3337: Handle functions declared using typedefs. 557typedef CFTypeRef CREATEFUN(); 558CREATEFUN MyCreateFun; 559 560void f12() { 561 CFTypeRef o = MyCreateFun(); // expected-warning {{leak}} 562} 563 564void f13_autorelease() { 565 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 566 [(id) A autorelease]; // no-warning 567} 568 569void f13_autorelease_b() { 570 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 571 [(id) A autorelease]; 572 [(id) A autorelease]; 573} // expected-warning{{Object autoreleased too many times}} 574 575CFMutableArrayRef f13_autorelease_c() { 576 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 577 [(id) A autorelease]; 578 [(id) A autorelease]; 579 return A; // expected-warning{{Object autoreleased too many times}} 580} 581 582CFMutableArrayRef f13_autorelease_d() { 583 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 584 [(id) A autorelease]; 585 [(id) A autorelease]; 586 CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object autoreleased too many times}} 587 CFRelease(B); // no-warning 588 while (1) {} 589} 590 591 592// This case exercises the logic where the leak site is the same as the allocation site. 593void f14_leakimmediately() { 594 CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}} 595} 596 597// Test that we track an allocated object beyond the point where the *name* 598// of the variable storing the reference is no longer live. 599void f15() { 600 // Create the array. 601 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 602 CFMutableArrayRef *B = &A; 603 // At this point, the name 'A' is no longer live. 604 CFRelease(*B); // no-warning 605} 606 607// Test when we pass NULL to CFRetain/CFRelease/CFMakeCollectable/CFAutorelease. 608void f16(int x, CFTypeRef p) { 609 if (p) 610 return; 611 612 switch (x) { 613 case 0: 614 CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}} 615 break; 616 case 1: 617 CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}} 618 break; 619 case 2: 620 CFMakeCollectable(p); // expected-warning{{Null pointer argument in call to CFMakeCollectable}} 621 break; 622 case 3: 623 CFAutorelease(p); // expected-warning{{Null pointer argument in call to CFAutorelease}} 624 break; 625 default: 626 break; 627 } 628} 629 630#ifdef TRACK_START_PARAM 631@interface TestParam : NSObject 632- (void) f:(id) object; 633@end 634 635@implementation TestParam 636- (void) f:(id) object { // expected-warning{{Potential leak of an object of type 'id'}} 637 [object retain]; 638 [object retain]; 639} 640@end 641#endif 642 643// Test that an object is non-null after CFRetain/CFRelease/CFMakeCollectable/CFAutorelease. 644void f17(int x, CFTypeRef p) { 645#ifdef TRACK_START_PARAM 646 // expected-warning@-2{{Potential leak of an object of type 'CFTypeRef'}} 647#endif 648 switch (x) { 649 case 0: 650 CFRelease(p); 651#ifdef TRACK_START_PARAM 652 // expected-warning@-2{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 653#endif 654 if (!p) 655 CFRelease(0); // no-warning 656 break; 657 case 1: 658 CFRetain(p); 659 if (!p) 660 CFRetain(0); // no-warning 661 break; 662 case 2: 663 CFMakeCollectable(p); 664 if (!p) 665 CFMakeCollectable(0); // no-warning 666 break; 667 case 3: 668 CFAutorelease(p); 669 if (!p) 670 CFAutorelease(0); // no-warning 671 break; 672 default: 673 break; 674 } 675} 676#ifdef TRACK_START_PARAM 677 // expected-warning@-2{{Object autoreleased too many times}} 678#endif 679 680__attribute__((annotate("rc_ownership_returns_retained"))) isl_basic_map *isl_basic_map_cow(__attribute__((annotate("rc_ownership_consumed"))) isl_basic_map *bmap); 681 682// Test custom diagnostics for generalized objects. 683void f18(__attribute__((annotate("rc_ownership_consumed"))) isl_basic_map *bmap) { 684 // After this call, 'bmap' has a +1 reference count. 685 bmap = isl_basic_map_cow(bmap); // expected-warning {{Potential leak of an object}} 686} 687 688// Test basic tracking of ivars associated with 'self'. For the retain/release 689// checker we currently do not want to flag leaks associated with stores 690// of tracked objects to ivars. 691@interface SelfIvarTest : NSObject { 692 id myObj; 693} 694- (void)test_self_tracking; 695@end 696 697@implementation SelfIvarTest 698- (void)test_self_tracking { 699 myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 700} 701@end 702 703// Test return of non-owned objects in contexts where an owned object 704// is expected. 705@interface TestReturnNotOwnedWhenExpectedOwned 706- (NSString*)newString; 707@end 708 709@implementation TestReturnNotOwnedWhenExpectedOwned 710- (NSString*)newString { 711 NSString *s = [NSString stringWithUTF8String:"hello"]; 712 return s; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 713} 714@end 715 716// <rdar://problem/6659160> 717int isFoo(char c); 718 719static void rdar_6659160(char *inkind, char *inname) 720{ 721 // We currently expect that [NSObject alloc] cannot fail. This 722 // will be a toggled flag in the future. It can indeed return null, but 723 // Cocoa programmers generally aren't expected to reason about out-of-memory 724 // conditions. 725 NSString *kind = [[NSString alloc] initWithUTF8String:inkind]; // expected-warning{{leak}} 726 727 // We do allow stringWithUTF8String to fail. This isn't really correct, as 728 // far as returning 0. In most error conditions it will throw an exception. 729 // If allocation fails it could return 0, but again this 730 // isn't expected. 731 NSString *name = [NSString stringWithUTF8String:inname]; 732 if(!name) 733 return; 734 735 const char *kindC = 0; 736 const char *nameC = 0; 737 738 // In both cases, we cannot reach a point down below where we 739 // dereference kindC or nameC with either being null. This is because 740 // we assume that [NSObject alloc] doesn't fail and that we have the guard 741 // up above. 742 743 if(kind) 744 kindC = [kind UTF8String]; 745 if(name) 746 nameC = [name UTF8String]; 747 if(!isFoo(kindC[0])) // expected-warning{{null}} 748 return; 749 if(!isFoo(nameC[0])) // no-warning 750 return; 751 752 [kind release]; 753 [name release]; // expected-warning{{Incorrect decrement of the reference count}} 754} 755 756// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming 757// conventions with respect to 'return'ing ownership. 758@interface PR3677: NSObject @end 759@implementation PR3677 760+ (id)allocWithZone:(NSZone *)inZone { 761 return [super allocWithZone:inZone]; // no-warning 762} 763@end 764 765// PR 3820 - Reason about calls to -dealloc 766void pr3820_DeallocInsteadOfRelease(void) 767{ 768 id foo = [[NSString alloc] init]; // no-warning 769 [foo dealloc]; 770 // foo is not leaked, since it has been deallocated. 771} 772 773void pr3820_ReleaseAfterDealloc(void) 774{ 775 id foo = [[NSString alloc] init]; 776 [foo dealloc]; 777 [foo release]; // expected-warning{{used after it is release}} 778 // NSInternalInconsistencyException: message sent to deallocated object 779} 780 781void pr3820_DeallocAfterRelease(void) 782{ 783 NSLog(@"\n\n[%s]", __FUNCTION__); 784 id foo = [[NSString alloc] init]; 785 [foo release]; 786 [foo dealloc]; // expected-warning{{used after it is released}} 787 // message sent to released object 788} 789 790// From <rdar://problem/6704930>. The problem here is that 'length' binds to 791// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to 792// reason about '($0 - 1) > constant'. As a temporary hack, we drop the value 793// of '($0 - 1)' and conjure a new symbol. 794void rdar6704930(unsigned char *s, unsigned int length) { 795 NSString* name = 0; 796 if (s != 0) { 797 if (length > 0) { 798 while (length > 0) { 799 if (*s == ':') { 800 ++s; 801 --length; 802 name = [[NSString alloc] init]; // no-warning 803 break; 804 } 805 ++s; 806 --length; 807 } 808 if ((length == 0) && (name != 0)) { 809 [name release]; 810 name = 0; 811 } 812 if (length == 0) { // no ':' found -> use it all as name 813 name = [[NSString alloc] init]; // no-warning 814 } 815 } 816 } 817 818 if (name != 0) { 819 [name release]; 820 } 821} 822 823//===----------------------------------------------------------------------===// 824// <rdar://problem/6833332> 825// One build of the analyzer accidentally stopped tracking the allocated 826// object after the 'retain'. 827//===----------------------------------------------------------------------===// 828 829@interface rdar_6833332 : NSObject <NSApplicationDelegate> { 830 NSWindow *window; 831} 832@property (nonatomic, retain) NSWindow *window; 833@end 834 835@implementation rdar_6833332 836@synthesize window; 837- (void)applicationDidFinishLaunching:(NSNotification *)aNotification { 838 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 839 840 [dict setObject:@"foo" forKey:@"bar"]; 841 842 NSLog(@"%@", dict); 843} 844- (void)dealloc { 845 [window release]; 846 [super dealloc]; 847} 848 849- (void)radar10102244 { 850 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 851 if (window) 852 NSLog(@"%@", window); 853} 854@end 855 856//===----------------------------------------------------------------------===// 857// <rdar://problem/6257780> clang checker fails to catch use-after-release 858//===----------------------------------------------------------------------===// 859 860int rdar_6257780_Case1() { 861 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 862 NSArray *array = [NSArray array]; 863 [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 864 [pool drain]; 865 return 0; 866} 867 868//===----------------------------------------------------------------------===// 869// <rdar://problem/10640253> Analyzer is confused about NSAutoreleasePool -allocWithZone:. 870//===----------------------------------------------------------------------===// 871 872void rdar_10640253_autorelease_allocWithZone() { 873 NSAutoreleasePool *pool = [[NSAutoreleasePool allocWithZone:(NSZone*)0] init]; 874 (void) pool; 875} 876 877//===----------------------------------------------------------------------===// 878// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs 879//===----------------------------------------------------------------------===// 880 881void rdar_6866843() { 882 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 883 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init]; 884 NSArray* array = [[NSArray alloc] init]; 885 [dictionary setObject:array forKey:@"key"]; 886 [array release]; 887 // Using 'array' here should be fine 888 NSLog(@"array = %@\n", array); // no-warning 889 // Now the array is released 890 [dictionary release]; 891 [pool drain]; 892} 893 894 895//===----------------------------------------------------------------------===// 896// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects 897//===----------------------------------------------------------------------===// 898 899typedef CFTypeRef OtherRef; 900 901@interface RDar6877235 : NSObject {} 902- (CFTypeRef)_copyCFTypeRef; 903- (OtherRef)_copyOtherRef; 904@end 905 906@implementation RDar6877235 907- (CFTypeRef)_copyCFTypeRef { 908 return [[NSString alloc] init]; // no-warning 909} 910- (OtherRef)_copyOtherRef { 911 return [[NSString alloc] init]; // no-warning 912} 913@end 914 915//===----------------------------------------------------------------------===// 916// <rdar://problem/6320065> false positive - init method returns an object 917// owned by caller 918//===----------------------------------------------------------------------===// 919 920@interface RDar6320065 : NSObject { 921 NSString *_foo; 922} 923- (id)initReturningNewClass; 924- (id)_initReturningNewClassBad; 925- (id)initReturningNewClassBad2; 926@end 927 928@interface RDar6320065Subclass : RDar6320065 929@end 930 931@implementation RDar6320065 932- (id)initReturningNewClass { 933 [self release]; 934 self = [[RDar6320065Subclass alloc] init]; // no-warning 935 return self; 936} 937- (id)_initReturningNewClassBad { 938 [self release]; 939 [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}} 940 return self; 941} 942- (id)initReturningNewClassBad2 { 943 [self release]; 944 self = [[RDar6320065Subclass alloc] init]; 945 return [self autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 946} 947 948@end 949 950@implementation RDar6320065Subclass 951@end 952 953int RDar6320065_test() { 954 RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning 955 [test release]; 956 return 0; 957} 958 959//===----------------------------------------------------------------------===// 960// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 961// and claims the receiver 962//===----------------------------------------------------------------------===// 963 964@interface RDar7129086 : NSObject {} @end 965@implementation RDar7129086 966- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder { 967 [self release]; // no-warning 968 return [NSString alloc]; // no-warning 969} 970@end 971 972//===----------------------------------------------------------------------===// 973// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a 974// retained object 975//===----------------------------------------------------------------------===// 976 977@interface RDar6859457 : NSObject {} 978- (NSString*) NoCopyString; 979- (NSString*) noCopyString; 980@end 981 982@implementation RDar6859457 983- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 984- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 985@end 986 987void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) { 988 [x NoCopyString]; // expected-warning{{leak}} 989 [x noCopyString]; // expected-warning{{leak}} 990 [NSData dataWithBytesNoCopy:bytes length:dataLength]; // no-warning 991 [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning 992} 993 994//===----------------------------------------------------------------------===// 995// PR 4230 - an autorelease pool is not necessarily leaked during a premature 996// return 997//===----------------------------------------------------------------------===// 998 999static void PR4230(void) 1000{ 1001 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning 1002 NSString *object = [[[NSString alloc] init] autorelease]; // no-warning 1003 return; 1004} 1005 1006static void PR4230_new(void) 1007{ 1008 NSAutoreleasePool *pool = [NSAutoreleasePool new]; // no-warning 1009 NSString *object = [[[NSString alloc] init] autorelease]; // no-warning 1010 return; 1011} 1012 1013//===----------------------------------------------------------------------===// 1014// Method name that has a null IdentifierInfo* for its first selector slot. 1015// This test just makes sure that we handle it. 1016//===----------------------------------------------------------------------===// 1017 1018@interface TestNullIdentifier 1019@end 1020 1021@implementation TestNullIdentifier 1022+ (id):(int)x, ... { 1023 return [[NSString alloc] init]; // expected-warning{{leak}} 1024} 1025@end 1026 1027//===----------------------------------------------------------------------===// 1028// <rdar://problem/6893565> don't flag leaks for return types that cannot be 1029// determined to be CF types 1030//===----------------------------------------------------------------------===// 1031 1032// We don't know if 'struct s6893565' represents a Core Foundation type, so 1033// we shouldn't emit an error here. 1034typedef struct s6893565* TD6893565; 1035 1036@interface RDar6893565 {} 1037-(TD6893565)newThing; 1038@end 1039 1040@implementation RDar6893565 1041-(TD6893565)newThing { 1042 return (TD6893565) [[NSString alloc] init]; // no-warning 1043} 1044@end 1045 1046//===----------------------------------------------------------------------===// 1047// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods 1048//===----------------------------------------------------------------------===// 1049 1050void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context, 1051 NSString *str, CIImage *img, CGRect rect, 1052 CIFormat form, CGColorSpaceRef cs) { 1053 [view createSnapshotImageOfType:str]; // expected-warning{{leak}} 1054 [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}} 1055 [context createCGImage:img fromRect:rect]; // expected-warning{{leak}} 1056 [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}} 1057} 1058 1059//===----------------------------------------------------------------------===// 1060// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:] 1061// misinterpreted by clang scan-build 1062//===----------------------------------------------------------------------===// 1063 1064void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) { 1065 [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}} 1066} 1067 1068//===----------------------------------------------------------------------===// 1069// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 1070// checker 1071//===----------------------------------------------------------------------===// 1072 1073void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options, const char * bsdName) { 1074 IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}} 1075} 1076 1077void IOServiceMatching_wrapper(const char * name) { 1078 IOServiceMatching(name); // expected-warning{{leak}} 1079} 1080 1081void IOServiceNameMatching_wrapper(const char * name) { 1082 IOServiceNameMatching(name); // expected-warning{{leak}} 1083} 1084 1085CF_RETURNS_RETAINED CFDictionaryRef CreateDict(); 1086 1087void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType, 1088 mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) { 1089 1090 CFDictionaryRef matching = CreateDict(); 1091 CFRelease(matching); 1092 IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}} 1093 wakePort, reference, notification); 1094} 1095 1096void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) { 1097 IORegistryEntryIDMatching(entryID); // expected-warning{{leak}} 1098} 1099 1100void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options, 1101 const char * path) { 1102 IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}} 1103} 1104 1105void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) { 1106 CFDictionaryRef matching = CreateDict(); 1107 IOServiceGetMatchingService(masterPort, matching); 1108 CFRelease(matching); // expected-warning{{used after it is released}} 1109} 1110 1111void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) { 1112 CFDictionaryRef matching = CreateDict(); 1113 IOServiceGetMatchingServices(masterPort, matching, existing); 1114 CFRelease(matching); // expected-warning{{used after it is released}} 1115} 1116 1117void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 1118 IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) { 1119 1120 CFDictionaryRef matching = CreateDict(); 1121 IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification); 1122 CFRelease(matching); // expected-warning{{used after it is released}} 1123} 1124 1125//===----------------------------------------------------------------------===// 1126// Test of handling objects whose references "escape" to containers. 1127//===----------------------------------------------------------------------===// 1128 1129void CFDictionaryAddValue(CFMutableDictionaryRef, void *, void *); 1130 1131// <rdar://problem/6539791> 1132void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) { 1133 CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); 1134 CFDictionaryAddValue(y, key, x); 1135 CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet 1136 signed z = 1; 1137 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 1138 if (value) { 1139 CFDictionaryAddValue(x, val_key, (void*)value); // no-warning 1140 CFRelease(value); 1141 CFDictionaryAddValue(y, val_key, (void*)value); // no-warning 1142 } 1143} 1144 1145// <rdar://problem/6560661> 1146// Same issue, except with "AppendValue" functions. 1147void rdar_6560661(CFMutableArrayRef x) { 1148 signed z = 1; 1149 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 1150 // CFArrayAppendValue keeps a reference to value. 1151 CFArrayAppendValue(x, value); 1152 CFRelease(value); 1153 CFRetain(value); 1154 CFRelease(value); // no-warning 1155} 1156 1157// <rdar://problem/7152619> 1158// Same issue, excwept with "CFAttributeStringSetAttribute". 1159void rdar_7152619(CFStringRef str) { 1160 CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0); 1161 CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string); 1162 CFRelease(string); 1163 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1164 CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number); 1165 [number release]; 1166 [number retain]; 1167 CFRelease(attrString); 1168} 1169 1170//===----------------------------------------------------------------------===// 1171// Test of handling CGGradientXXX functions. 1172//===----------------------------------------------------------------------===// 1173 1174void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1175 CGPoint myEndPoint) { 1176 size_t num_locations = 6; 1177 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1178 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1179 x, // Start color 1180 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1181 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1182 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1183 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1184 255.0/255.0,255.0/255.0, 255.0/255.0, x 1185 }; // End color 1186 1187 CGGradientRef myGradient = 1188 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}} 1189 components, locations, num_locations); 1190 1191 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1192 0); 1193 CGGradientRelease(myGradient); 1194} 1195 1196void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1197 CGPoint myEndPoint) { 1198 size_t num_locations = 6; 1199 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1200 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1201 x, // Start color 1202 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1203 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1204 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1205 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1206 255.0/255.0,255.0/255.0, 255.0/255.0, x 1207 }; // End color 1208 1209 CGGradientRef myGradient = 1210 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}} 1211 1212 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1213 0); 1214} 1215 1216//===----------------------------------------------------------------------===// 1217// <rdar://problem/7299394> clang false positive: retained instance passed to 1218// thread in pthread_create marked as leak 1219// 1220// Until we have full IPA, the analyzer should stop tracking the reference 1221// count of objects passed to pthread_create. 1222// 1223//===----------------------------------------------------------------------===// 1224 1225struct _opaque_pthread_t {}; 1226struct _opaque_pthread_attr_t {}; 1227typedef struct _opaque_pthread_t *__darwin_pthread_t; 1228typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t; 1229typedef __darwin_pthread_t pthread_t; 1230typedef __darwin_pthread_attr_t pthread_attr_t; 1231typedef unsigned long __darwin_pthread_key_t; 1232typedef __darwin_pthread_key_t pthread_key_t; 1233 1234int pthread_create(pthread_t *, const pthread_attr_t *, 1235 void *(*)(void *), void *); 1236 1237int pthread_setspecific(pthread_key_t key, const void *value); 1238 1239void *rdar_7299394_start_routine(void *p) { 1240 [((id) p) release]; 1241 return 0; 1242} 1243void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) { 1244 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1245 pthread_create(thread, attr, rdar_7299394_start_routine, number); 1246} 1247void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) { 1248 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1249} 1250 1251//===----------------------------------------------------------------------===// 1252// <rdar://problem/11282706> false positive with not understanding thread 1253// local storage 1254//===----------------------------------------------------------------------===// 1255 1256void rdar11282706(pthread_key_t key) { 1257 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1258 pthread_setspecific(key, (void*) number); 1259} 1260 1261//===----------------------------------------------------------------------===// 1262// <rdar://problem/7283567> False leak associated with call to 1263// CVPixelBufferCreateWithBytes () 1264// 1265// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and 1266// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the 1267// pixel buffer object. These test cases show how the analyzer stops tracking 1268// the reference count for the objects passed for this argument. This 1269// could be made smarter. 1270//===----------------------------------------------------------------------===// 1271 1272typedef int int32_t; 1273typedef UInt32 FourCharCode; 1274typedef FourCharCode OSType; 1275typedef uint64_t CVOptionFlags; 1276typedef int32_t CVReturn; 1277typedef struct __CVBuffer *CVBufferRef; 1278typedef CVBufferRef CVImageBufferRef; 1279typedef CVImageBufferRef CVPixelBufferRef; 1280typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress ); 1281 1282extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1283 size_t width, 1284 size_t height, 1285 OSType pixelFormatType, 1286 void *baseAddress, 1287 size_t bytesPerRow, 1288 CVPixelBufferReleaseBytesCallback releaseCallback, 1289 void *releaseRefCon, 1290 CFDictionaryRef pixelBufferAttributes, 1291 CVPixelBufferRef *pixelBufferOut) ; 1292 1293typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] ); 1294 1295extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator, 1296 size_t width, 1297 size_t height, 1298 OSType pixelFormatType, 1299 void *dataPtr, 1300 size_t dataSize, 1301 size_t numberOfPlanes, 1302 void *planeBaseAddress[], 1303 size_t planeWidth[], 1304 size_t planeHeight[], 1305 size_t planeBytesPerRow[], 1306 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1307 void *releaseRefCon, 1308 CFDictionaryRef pixelBufferAttributes, 1309 CVPixelBufferRef *pixelBufferOut) ; 1310 1311extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1312 size_t width, 1313 size_t height, 1314 OSType pixelFormatType, 1315 void *baseAddress, 1316 size_t bytesPerRow, 1317 CVPixelBufferReleaseBytesCallback releaseCallback, 1318 void *releaseRefCon, 1319 CFDictionaryRef pixelBufferAttributes, 1320 CVPixelBufferRef *pixelBufferOut) ; 1321 1322CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height, 1323 OSType pixelFormatType, void *baseAddress, 1324 size_t bytesPerRow, 1325 CVPixelBufferReleaseBytesCallback releaseCallback, 1326 CFDictionaryRef pixelBufferAttributes, 1327 CVPixelBufferRef *pixelBufferOut) { 1328 1329 // For the allocated object, it doesn't really matter what type it is 1330 // for the purpose of this test. All we want to show is that 1331 // this is freed later by the callback. 1332 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1333 1334 return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType, 1335 baseAddress, bytesPerRow, releaseCallback, 1336 number, // potentially released by callback 1337 pixelBufferAttributes, pixelBufferOut) ; 1338} 1339 1340CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height, 1341 OSType pixelFormatType, void *dataPtr, size_t dataSize, 1342 size_t numberOfPlanes, void *planeBaseAddress[], 1343 size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[], 1344 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1345 CFDictionaryRef pixelBufferAttributes, 1346 CVPixelBufferRef *pixelBufferOut) { 1347 1348 // For the allocated object, it doesn't really matter what type it is 1349 // for the purpose of this test. All we want to show is that 1350 // this is freed later by the callback. 1351 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1352 1353 return CVPixelBufferCreateWithPlanarBytes(allocator, 1354 width, height, pixelFormatType, dataPtr, dataSize, 1355 numberOfPlanes, planeBaseAddress, planeWidth, 1356 planeHeight, planeBytesPerRow, releaseCallback, 1357 number, // potentially released by callback 1358 pixelBufferAttributes, pixelBufferOut) ; 1359} 1360 1361#pragma clang arc_cf_code_audited begin 1362typedef struct SomeOpaqueStruct *CMSampleBufferRef; 1363CVImageBufferRef _Nonnull CMSampleBufferGetImageBuffer(CMSampleBufferRef _Nonnull sbuf); 1364#pragma clang arc_cf_code_audited end 1365 1366CVBufferRef _Nullable CVBufferRetain(CVBufferRef _Nullable buffer); 1367void CVBufferRelease(CF_CONSUMED CVBufferRef _Nullable buffer); 1368 1369void testCVPrefixRetain(CMSampleBufferRef sbuf) { 1370 // Make sure RetainCountChecker treats CVFooRetain() as a CF-style retain. 1371 CVPixelBufferRef pixelBuf = CMSampleBufferGetImageBuffer(sbuf); 1372 CVBufferRetain(pixelBuf); 1373 CVBufferRelease(pixelBuf); // no-warning 1374 1375 1376 // Make sure result of CVFooRetain() is the same as its argument. 1377 CVPixelBufferRef pixelBufAlias = CVBufferRetain(pixelBuf); 1378 CVBufferRelease(pixelBufAlias); // no-warning 1379} 1380 1381typedef signed long SInt32; 1382typedef SInt32 OSStatus; 1383typedef FourCharCode CMVideoCodecType; 1384 1385 1386typedef UInt32 VTEncodeInfoFlags; enum { 1387 kVTEncodeInfo_Asynchronous = 1UL << 0, 1388 kVTEncodeInfo_FrameDropped = 1UL << 1, 1389}; 1390typedef struct 1391{ 1392 int ignore; 1393} CMTime; 1394 1395 1396typedef void (*VTCompressionOutputCallback)( 1397 void * _Nullable outputCallbackRefCon, 1398 void * _Nullable sourceFrameRefCon, 1399 OSStatus status, 1400 VTEncodeInfoFlags infoFlags, 1401 _Nullable CMSampleBufferRef sampleBuffer ); 1402 1403typedef struct OpaqueVTCompressionSession* VTCompressionSessionRef; 1404 1405extern OSStatus 1406VTCompressionSessionCreate(_Nullable CFAllocatorRef allocator, 1407 int32_t width, 1408 int32_t height, 1409 CMVideoCodecType codecType, 1410 _Nullable CFDictionaryRef encoderSpecification, 1411 _Nullable CFDictionaryRef sourceImageBufferAttributes, 1412 _Nullable CFAllocatorRef compressedDataAllocator, 1413 _Nullable VTCompressionOutputCallback outputCallback, 1414 void * _Nullable outputCallbackRefCon, 1415 CF_RETURNS_RETAINED _Nullable VTCompressionSessionRef * _Nonnull compressionSessionOut); 1416 1417extern OSStatus 1418VTCompressionSessionEncodeFrame( 1419 _Nonnull VTCompressionSessionRef session, 1420 _Nonnull CVImageBufferRef imageBuffer, 1421 CMTime presentationTimeStamp, 1422 CMTime duration, 1423 _Nullable CFDictionaryRef frameProperties, 1424 void * _Nullable sourceFrameRefCon, 1425 VTEncodeInfoFlags * _Nullable infoFlagsOut); 1426 1427OSStatus test_VTCompressionSessionCreateAndEncode_CallbackReleases( 1428 _Nullable CFAllocatorRef allocator, 1429 int32_t width, 1430 int32_t height, 1431 CMVideoCodecType codecType, 1432 _Nullable CFDictionaryRef encoderSpecification, 1433 _Nullable CFDictionaryRef sourceImageBufferAttributes, 1434 _Nullable CFAllocatorRef compressedDataAllocator, 1435 _Nullable VTCompressionOutputCallback outputCallback, 1436 1437 _Nonnull CVImageBufferRef imageBuffer, 1438 CMTime presentationTimeStamp, 1439 CMTime duration, 1440 _Nullable CFDictionaryRef frameProperties 1441) { 1442 1443 // The outputCallback is passed both contexts and so can release either. 1444 NSNumber *contextForCreate = [[NSNumber alloc] initWithInt:5]; // no-warning 1445 NSNumber *contextForEncode = [[NSNumber alloc] initWithInt:6]; // no-warning 1446 1447 VTCompressionSessionRef session = 0; 1448 OSStatus status = VTCompressionSessionCreate(allocator, 1449 width, height, codecType, encoderSpecification, 1450 sourceImageBufferAttributes, 1451 compressedDataAllocator, outputCallback, contextForCreate, 1452 &session); 1453 1454 VTEncodeInfoFlags encodeInfoFlags; 1455 1456 status = VTCompressionSessionEncodeFrame(session, imageBuffer, 1457 presentationTimeStamp, duration, frameProperties, contextForEncode, 1458 &encodeInfoFlags); 1459 1460 return status; 1461} 1462 1463//===----------------------------------------------------------------------===// 1464// <rdar://problem/7358899> False leak associated with 1465// CGBitmapContextCreateWithData 1466//===----------------------------------------------------------------------===// 1467typedef uint32_t CGBitmapInfo; 1468typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data); 1469 1470CGContextRef CGBitmapContextCreateWithData(void *data, 1471 size_t width, size_t height, size_t bitsPerComponent, 1472 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1473 CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo); 1474 1475void rdar_7358899(void *data, 1476 size_t width, size_t height, size_t bitsPerComponent, 1477 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1478 CGBitmapContextReleaseDataCallback releaseCallback) { 1479 1480 // For the allocated object, it doesn't really matter what type it is 1481 // for the purpose of this test. All we want to show is that 1482 // this is freed later by the callback. 1483 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1484 1485 CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}} 1486 bytesPerRow, space, bitmapInfo, releaseCallback, number); 1487} 1488 1489//===----------------------------------------------------------------------===// 1490// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to 1491// start before '_' when determining Cocoa fundamental rule 1492// 1493// Previously the retain/release checker just skipped prefixes before the 1494// first '_' entirely. Now the checker honors the prefix if it results in a 1495// recognizable naming convention (e.g., 'new', 'init'). 1496//===----------------------------------------------------------------------===// 1497 1498@interface RDar7265711 {} 1499- (id) new_stuff; 1500@end 1501 1502void rdar7265711_a(RDar7265711 *x) { 1503 id y = [x new_stuff]; // expected-warning{{leak}} 1504} 1505 1506void rdar7265711_b(RDar7265711 *x) { 1507 id y = [x new_stuff]; // no-warning 1508 [y release]; 1509} 1510 1511//===----------------------------------------------------------------------===// 1512// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a 1513// retained reference 1514//===----------------------------------------------------------------------===// 1515 1516@interface NSCursor : NSObject 1517+ (NSCursor *)dragCopyCursor; 1518@end 1519 1520void rdar7306898(void) { 1521 // 'dragCopyCursor' does not follow Cocoa's fundamental rule. It is a noun, not an sentence 1522 // implying a 'copy' of something. 1523 NSCursor *c = [NSCursor dragCopyCursor]; // no-warning 1524 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1525} 1526 1527//===----------------------------------------------------------------------===// 1528// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class 1529// directly is not likely what the user intended 1530//===----------------------------------------------------------------------===// 1531 1532@interface RDar7252064 : NSObject @end 1533void rdar7252064(void) { 1534 [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1535 [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1536 [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1537 [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}} 1538} 1539 1540//===----------------------------------------------------------------------===// 1541// Tests of ownership attributes. 1542//===----------------------------------------------------------------------===// 1543 1544typedef NSString* MyStringTy; 1545 1546@protocol FooP; 1547 1548@interface TestOwnershipAttr : NSObject 1549- (NSString*) returnsAnOwnedString NS_RETURNS_RETAINED; // no-warning 1550- (NSString*) returnsAnOwnedCFString CF_RETURNS_RETAINED; // no-warning 1551- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning 1552- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning 1553- (NSString*) newString_auto NS_RETURNS_AUTORELEASED; // no-warning 1554- (NSString*) newStringNoAttr; 1555- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}} 1556- (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED; 1557+ (void) consume:(id) NS_CONSUMED x; 1558+ (void) consume2:(id) CF_CONSUMED x; 1559@end 1560 1561static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' only applies to function types; type here is 'int'}} 1562 1563void test_attr_1(TestOwnershipAttr *X) { 1564 NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}} 1565} 1566 1567void test_attr_1b(TestOwnershipAttr *X) { 1568 NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}} 1569} 1570 1571void test_attr1c(TestOwnershipAttr *X) { 1572 NSString *str = [X newString]; // no-warning 1573 NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}} 1574 NSString *str3 = [X newString_auto]; // no-warning 1575 NSString *str4 = [[X newString_auto] retain]; // expected-warning {{leak}} 1576} 1577 1578void testattr2_a() { 1579 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}} 1580} 1581 1582void testattr2_b() { 1583 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // expected-warning{{leak}} 1584} 1585 1586void testattr2_b_11358224_self_assign_looses_the_leak() { 1587 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit];// expected-warning{{leak}} 1588 x = x; 1589} 1590 1591void testattr2_c() { 1592 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning 1593 [x release]; 1594} 1595 1596void testattr3() { 1597 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1598 [TestOwnershipAttr consume:x]; 1599 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1600 [TestOwnershipAttr consume2:y]; 1601} 1602 1603void consume_ns(id NS_CONSUMED x); 1604void consume_cf(id CF_CONSUMED x); 1605 1606void testattr4() { 1607 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1608 consume_ns(x); 1609 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1610 consume_cf(y); 1611} 1612 1613@interface TestOwnershipAttr2 : NSObject 1614- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning 1615@end 1616 1617@implementation TestOwnershipAttr2 1618- (NSString*) newString { 1619 return [NSString alloc]; // expected-warning {{Potential leak of an object}} 1620} 1621@end 1622 1623@interface MyClassTestCFAttr : NSObject {} 1624- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED; 1625- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED; 1626- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED; 1627- (CFDateRef) newCFRetainedAsCFNoAttr; 1628- (NSDate*) alsoReturnsRetained; 1629- (CFDateRef) alsoReturnsRetainedAsCF; 1630- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED; 1631@end 1632 1633CF_RETURNS_RETAINED 1634CFDateRef returnsRetainedCFDate() { 1635 return CFDateCreate(0, CFAbsoluteTimeGetCurrent()); 1636} 1637 1638@implementation MyClassTestCFAttr 1639- (NSDate*) returnsCFRetained { 1640 return (NSDate*) returnsRetainedCFDate(); // No leak. 1641} 1642 1643- (CFDateRef) returnsCFRetainedAsCF { 1644 return returnsRetainedCFDate(); // No leak. 1645} 1646 1647- (CFDateRef) newCFRetainedAsCF { 1648 return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; 1649} 1650 1651- (CFDateRef) newCFRetainedAsCFNoAttr { 1652 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}} 1653} 1654 1655- (NSDate*) alsoReturnsRetained { 1656 return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}} 1657} 1658 1659- (CFDateRef) alsoReturnsRetainedAsCF { 1660 return returnsRetainedCFDate(); // expected-warning{{leak}} 1661} 1662 1663 1664- (NSDate*) returnsNSRetained { 1665 return (NSDate*) returnsRetainedCFDate(); // no-warning 1666} 1667@end 1668 1669//===----------------------------------------------------------------------===// 1670// Test that leaks post-dominated by "panic" functions are not reported. 1671// 1672// <rdar://problem/5905851> do not report a leak when post-dominated by a call 1673// to a noreturn or panic function 1674//===----------------------------------------------------------------------===// 1675 1676void panic() __attribute__((noreturn)); 1677void panic_not_in_hardcoded_list() __attribute__((noreturn)); 1678 1679void test_panic_negative() { 1680 signed z = 1; 1681 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1682} 1683 1684void test_panic_positive() { 1685 signed z = 1; 1686 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1687 panic(); 1688} 1689 1690void test_panic_neg_2(int x) { 1691 signed z = 1; 1692 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1693 if (x) 1694 panic(); 1695} 1696 1697void test_panic_pos_2(int x) { 1698 signed z = 1; 1699 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1700 if (x) 1701 panic(); 1702 if (!x) { 1703 // This showed up in <rdar://problem/7796563>, where we silently missed checking 1704 // the function type for noreturn. "panic()" is a hard-coded known panic function 1705 // that isn't always noreturn. 1706 panic_not_in_hardcoded_list(); 1707 } 1708} 1709 1710//===----------------------------------------------------------------------===// 1711// Test uses of blocks (closures) 1712//===----------------------------------------------------------------------===// 1713 1714void test_blocks_1_pos(void) { 1715 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1716 ^{}(); 1717} 1718 1719void test_blocks_1_indirect_release(void) { 1720 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1721 ^{ [number release]; }(); 1722} 1723 1724void test_blocks_1_indirect_retain(void) { 1725 // Eventually this should be reported as a leak. 1726 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1727 ^{ [number retain]; }(); 1728} 1729 1730void test_blocks_1_indirect_release_via_call(void) { 1731 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1732 ^(NSObject *o){ [o release]; }(number); 1733} 1734 1735void test_blocks_1_indirect_retain_via_call(void) { 1736 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning {{leak}} 1737 ^(NSObject *o){ [o retain]; }(number); 1738} 1739 1740//===--------------------------------------------------------------------===// 1741// Test sending message to super that returns an object alias. Previously 1742// this caused a crash in the analyzer. 1743//===--------------------------------------------------------------------===// 1744 1745@interface Rdar8015556 : NSObject {} @end 1746@implementation Rdar8015556 1747- (id)retain { 1748 return [super retain]; 1749} 1750@end 1751 1752// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions 1753// detector. 1754 1755@protocol Prot_R8272168 @end 1756Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168(); 1757void r8272168() { 1758 GetAClassThatImplementsProt_R8272168(); 1759} 1760 1761// Test case for <rdar://problem/8356342>, which in the past triggered 1762// a false positive. 1763@interface RDar8356342 1764- (NSDate*) rdar8356342:(NSDate *)inValue; 1765@end 1766 1767@implementation RDar8356342 1768- (NSDate*) rdar8356342:(NSDate*)inValue { 1769 NSDate *outValue = inValue; 1770 if (outValue == 0) 1771 outValue = [[NSDate alloc] init]; // no-warning 1772 1773 if (outValue != inValue) 1774 [outValue autorelease]; 1775 1776 return outValue; 1777} 1778@end 1779 1780// <rdar://problem/8724287> - This test case previously crashed because 1781// of a bug in BugReporter. 1782extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key); 1783typedef struct __CFError * CFErrorRef; 1784extern const CFStringRef kCFErrorUnderlyingErrorKey; 1785extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err); 1786static void rdar_8724287(CFErrorRef error) 1787{ 1788 CFErrorRef error_to_dump; 1789 1790 error_to_dump = error; 1791 while (error_to_dump != ((void*)0)) { 1792 CFDictionaryRef info; 1793 1794 info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object}} 1795 1796 if (info != ((void*)0)) { 1797 } 1798 1799 error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey); 1800 } 1801} 1802 1803// <rdar://problem/9234108> - Make sure the model applies cf_consumed 1804// correctly in argument positions besides the first. 1805extern void *CFStringCreate(void); 1806extern void rdar_9234108_helper(void *key, void * CF_CONSUMED value); 1807void rdar_9234108() { 1808 rdar_9234108_helper(0, CFStringCreate()); 1809} 1810 1811// <rdar://problem/9726279> - Make sure that objc_method_family works 1812// to override naming conventions. 1813struct TwoDoubles { 1814 double one; 1815 double two; 1816}; 1817typedef struct TwoDoubles TwoDoubles; 1818 1819@interface NSValue (Mine) 1820- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles __attribute__((objc_method_family(init))); 1821@end 1822 1823@implementation NSValue (Mine) 1824- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles 1825{ 1826 return [self init]; 1827} 1828@end 1829 1830void rdar9726279() { 1831 TwoDoubles twoDoubles = { 0.0, 0.0 }; 1832 NSValue *value = [[NSValue alloc] _prefix_initWithTwoDoubles:twoDoubles]; 1833 [value release]; 1834} 1835 1836// <rdar://problem/9732321> 1837// Test camelcase support for CF conventions. While Core Foundation APIs 1838// don't use camel casing, other code is allowed to use it. 1839CFArrayRef camelcase_create_1() { 1840 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1841} 1842 1843CFArrayRef camelcase_createno() { 1844 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1845} 1846 1847CFArrayRef camelcase_copy() { 1848 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1849} 1850 1851CFArrayRef camelcase_copying() { 1852 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1853} 1854 1855CFArrayRef copyCamelCase() { 1856 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1857} 1858 1859CFArrayRef __copyCamelCase() { 1860 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1861} 1862 1863CFArrayRef __createCamelCase() { 1864 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1865} 1866 1867CFArrayRef camel_create() { 1868 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1869} 1870 1871 1872CFArrayRef camel_creat() { 1873 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1874} 1875 1876CFArrayRef camel_copy() { 1877 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1878} 1879 1880CFArrayRef camel_copyMachine() { 1881 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1882} 1883 1884CFArrayRef camel_copymachine() { 1885 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1886} 1887 1888// rdar://problem/8024350 1889@protocol F18P 1890- (id) clone; // expected-note 2 {{method declared here}} 1891@end 1892@interface F18 : NSObject<F18P> @end 1893@interface F18(Cat) 1894- (id) clone NS_RETURNS_RETAINED; // expected-warning {{overriding method has mismatched ns_returns_retained attributes}} 1895@end 1896 1897@implementation F18 1898- (id) clone { // expected-warning {{overriding method has mismatched ns_returns_retained attributes}} 1899 return [F18 alloc]; 1900} 1901@end 1902 1903// Radar 6582778. 1904void rdar6582778(void) { 1905 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1906 CFTypeRef vals[] = { CFDateCreate(0, t) }; // expected-warning {{leak}} 1907} 1908 1909CFTypeRef global; 1910 1911void rdar6582778_2(void) { 1912 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1913 global = CFDateCreate(0, t); // no-warning 1914} 1915 1916// <rdar://problem/10232019> - Test that objects passed to containers 1917// are marked "escaped". 1918 1919void rdar10232019() { 1920 NSMutableArray *array = [NSMutableArray array]; 1921 1922 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1923 [array addObject:string]; 1924 [string release]; 1925 1926 NSString *otherString = [string stringByAppendingString:@"bar"]; // no-warning 1927 NSLog(@"%@", otherString); 1928} 1929 1930void rdar10232019_positive() { 1931 NSMutableArray *array = [NSMutableArray array]; 1932 1933 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1934 [string release]; 1935 1936 NSString *otherString = [string stringByAppendingString:@"bar"]; // expected-warning {{Reference-counted object is used after it is release}} 1937 NSLog(@"%@", otherString); 1938} 1939 1940// RetainCountChecker support for XPC. 1941// <rdar://problem/9658496> 1942typedef void * xpc_object_t; 1943xpc_object_t _CFXPCCreateXPCObjectFromCFObject(CFTypeRef cf); 1944void xpc_release(xpc_object_t object); 1945 1946void rdar9658496() { 1947 CFStringRef cf; 1948 xpc_object_t xpc; 1949 cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1950 xpc = _CFXPCCreateXPCObjectFromCFObject( cf ); 1951 CFRelease(cf); 1952 xpc_release(xpc); 1953} 1954 1955// Support annotations with method families. 1956@interface RDar10824732 : NSObject 1957- (id)initWithObj:(id CF_CONSUMED)obj; 1958@end 1959 1960@implementation RDar10824732 1961- (id)initWithObj:(id)obj { 1962 [obj release]; 1963 return [super init]; 1964} 1965@end 1966 1967void rdar_10824732() { 1968 @autoreleasepool { 1969 NSString *obj = @"test"; 1970 RDar10824732 *foo = [[RDar10824732 alloc] initWithObj:obj]; // no-warning 1971 [foo release]; 1972 } 1973} 1974 1975// Stop tracking objects passed to functions, which take callbacks as parameters. 1976// radar://10973977 1977typedef int (*CloseCallback) (void *); 1978void ReaderForIO(CloseCallback ioclose, void *ioctx); 1979int IOClose(void *context); 1980 1981@protocol SInS <NSObject> 1982@end 1983 1984@interface radar10973977 : NSObject 1985- (id<SInS>)inputS; 1986- (void)reader; 1987@end 1988 1989@implementation radar10973977 1990- (void)reader 1991{ 1992 id<SInS> inputS = [[self inputS] retain]; 1993 ReaderForIO(IOClose, inputS); 1994} 1995- (id<SInS>)inputS 1996{ 1997 return 0; 1998} 1999@end 2000 2001// Object escapes through a selector callback: radar://11398514 2002extern id NSApp; 2003@interface MySheetController 2004- (id<SInS>)inputS; 2005- (void)showDoSomethingSheetAction:(id)action; 2006- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo; 2007@end 2008 2009@implementation MySheetController 2010- (id<SInS>)inputS { 2011 return 0; 2012} 2013- (void)showDoSomethingSheetAction:(id)action { 2014 id<SInS> inputS = [[self inputS] retain]; 2015 [NSApp beginSheet:0 2016 modalForWindow:0 2017 modalDelegate:0 2018 didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) 2019 contextInfo:(void *)inputS]; // no - warning 2020} 2021- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo { 2022 2023 id contextObject = (id)contextInfo; 2024 [contextObject release]; 2025} 2026 2027- (id)copyAutoreleaseRadar13081402 { 2028 id x = [[[NSString alloc] initWithUTF8String:"foo"] autorelease]; 2029 [x retain]; 2030 return x; // no warning 2031} 2032 2033@end 2034//===----------------------------------------------------------------------===// 2035// Test returning allocated memory in a struct. 2036// 2037// We currently don't have a general way to track pointers that "escape". 2038// Here we test that RetainCountChecker doesn't get excited about returning 2039// allocated CF objects in struct fields. 2040//===----------------------------------------------------------------------===// 2041void *malloc(size_t); 2042struct rdar11104566 { CFStringRef myStr; }; 2043struct rdar11104566 test_rdar11104566() { 2044 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 2045 struct rdar11104566 V; 2046 V.myStr = cf; 2047 return V; // no-warning 2048} 2049 2050struct rdar11104566 *test_2_rdar11104566() { 2051 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 2052 struct rdar11104566 *V = (struct rdar11104566 *) malloc(sizeof(*V)); 2053 V->myStr = cf; 2054 return V; // no-warning 2055} 2056 2057//===----------------------------------------------------------------------===// 2058// ObjC literals support. 2059//===----------------------------------------------------------------------===// 2060 2061void test_objc_arrays() { 2062 { // CASE ONE -- OBJECT IN ARRAY CREATED DIRECTLY 2063 NSObject *o = [[NSObject alloc] init]; 2064 NSArray *a = [[NSArray alloc] initWithObjects:o, (void*)0]; // expected-warning {{leak}} 2065 [o release]; 2066 [a description]; 2067 [o description]; 2068 } 2069 2070 { // CASE TWO -- OBJECT IN ARRAY CREATED BY DUPING AUTORELEASED ARRAY 2071 NSObject *o = [[NSObject alloc] init]; 2072 NSArray *a1 = [NSArray arrayWithObjects:o, (void*)0]; 2073 NSArray *a2 = [[NSArray alloc] initWithArray:a1]; // expected-warning {{leak}} 2074 [o release]; 2075 [a2 description]; 2076 [o description]; 2077 } 2078 2079 { // CASE THREE -- OBJECT IN RETAINED @[] 2080 NSObject *o = [[NSObject alloc] init]; 2081 NSArray *a3 = [@[o] retain]; // expected-warning {{leak}} 2082 [o release]; 2083 [a3 description]; 2084 [o description]; 2085 } 2086 2087 { // CASE FOUR -- OBJECT IN ARRAY CREATED BY DUPING @[] 2088 NSObject *o = [[NSObject alloc] init]; 2089 NSArray *a = [[NSArray alloc] initWithArray:@[o]]; // expected-warning {{leak}} 2090 [o release]; 2091 2092 [a description]; 2093 [o description]; 2094 } 2095 2096 { // CASE FIVE -- OBJECT IN RETAINED @{} 2097 NSValue *o = [[NSValue alloc] init]; 2098 NSDictionary *a = [@{o : o} retain]; // expected-warning {{leak}} 2099 [o release]; 2100 2101 [a description]; 2102 [o description]; 2103 } 2104} 2105 2106void test_objc_integer_literals() { 2107 id value = [@1 retain]; // expected-warning {{leak}} 2108 [value description]; 2109} 2110 2111void test_objc_boxed_expressions(int x, const char *y) { 2112 id value = [@(x) retain]; // expected-warning {{leak}} 2113 [value description]; 2114 2115 value = [@(y) retain]; // expected-warning {{leak}} 2116 [value description]; 2117} 2118 2119// Test NSLog doesn't escape tracked objects. 2120void rdar11400885(int y) 2121{ 2122 @autoreleasepool { 2123 NSString *printString; 2124 if(y > 2) 2125 printString = [[NSString alloc] init]; 2126 else 2127 printString = [[NSString alloc] init]; 2128 NSLog(@"Once %@", printString); 2129 [printString release]; 2130 NSLog(@"Again: %@", printString); // expected-warning {{Reference-counted object is used after it is released}} 2131 } 2132} 2133 2134id makeCollectableNonLeak() { 2135 extern CFTypeRef CFCreateSomething(); 2136 2137 CFTypeRef object = CFCreateSomething(); // +1 2138 CFRetain(object); // +2 2139 id objCObject = NSMakeCollectable(object); // +2 2140 [objCObject release]; // +1 2141 return [objCObject autorelease]; // +0 2142} 2143 2144void consumeAndStopTracking(id NS_CONSUMED obj, void (^callback)(void)); 2145void CFConsumeAndStopTracking(CFTypeRef CF_CONSUMED obj, void (^callback)(void)); 2146 2147void testConsumeAndStopTracking() { 2148 id retained = [@[] retain]; // +1 2149 consumeAndStopTracking(retained, ^{}); // no-warning 2150 2151 id doubleRetained = [[@[] retain] retain]; // +2 2152 consumeAndStopTracking(doubleRetained, ^{ 2153 [doubleRetained release]; 2154 }); // no-warning 2155 2156 id unretained = @[]; // +0 2157 consumeAndStopTracking(unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2158} 2159 2160void testCFConsumeAndStopTracking() { 2161 id retained = [@[] retain]; // +1 2162 CFConsumeAndStopTracking((CFTypeRef)retained, ^{}); // no-warning 2163 2164 id doubleRetained = [[@[] retain] retain]; // +2 2165 CFConsumeAndStopTracking((CFTypeRef)doubleRetained, ^{ 2166 [doubleRetained release]; 2167 }); // no-warning 2168 2169 id unretained = @[]; // +0 2170 CFConsumeAndStopTracking((CFTypeRef)unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2171} 2172//===----------------------------------------------------------------------===// 2173// Test 'pragma clang arc_cf_code_audited' support. 2174//===----------------------------------------------------------------------===// 2175 2176typedef void *MyCFType; 2177#pragma clang arc_cf_code_audited begin 2178MyCFType CreateMyCFType(); 2179#pragma clang arc_cf_code_audited end 2180 2181void test_custom_cf() { 2182 MyCFType x = CreateMyCFType(); // expected-warning {{leak of an object stored into 'x'}} 2183} 2184 2185//===----------------------------------------------------------------------===// 2186// Test calling CFPlugInInstanceCreate, which appears in CF but doesn't 2187// return a CF object. 2188//===----------------------------------------------------------------------===// 2189 2190void test_CFPlugInInstanceCreate(CFUUIDRef factoryUUID, CFUUIDRef typeUUID) { 2191 CFPlugInInstanceCreate(kCFAllocatorDefault, factoryUUID, typeUUID); // no-warning 2192} 2193 2194//===----------------------------------------------------------------------===// 2195// PR14927: -drain only has retain-count semantics on NSAutoreleasePool. 2196//===----------------------------------------------------------------------===// 2197 2198@interface PR14927 : NSObject 2199- (void)drain; 2200@end 2201 2202void test_drain() { 2203 PR14927 *obj = [[PR14927 alloc] init]; 2204 [obj drain]; 2205 [obj release]; // no-warning 2206} 2207 2208//===----------------------------------------------------------------------===// 2209// Allow cf_returns_retained and cf_returns_not_retained to mark a return 2210// value as tracked, even if the object isn't a known CF type. 2211//===----------------------------------------------------------------------===// 2212 2213MyCFType getCustom() __attribute__((cf_returns_not_retained)); 2214MyCFType makeCustom() __attribute__((cf_returns_retained)); 2215 2216void testCustomReturnsRetained() { 2217 MyCFType obj = makeCustom(); // expected-warning {{leak of an object stored into 'obj'}} 2218} 2219 2220void testCustomReturnsNotRetained() { 2221 CFRelease(getCustom()); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2222} 2223 2224//===----------------------------------------------------------------------===// 2225// Don't print variables which are out of the current scope. 2226//===----------------------------------------------------------------------===// 2227@interface MyObj12706177 : NSObject 2228-(id)initX; 2229+(void)test12706177; 2230@end 2231static int Cond; 2232@implementation MyObj12706177 2233-(id)initX { 2234 if (Cond) 2235 return 0; 2236 self = [super init]; 2237 return self; 2238} 2239+(void)test12706177 { 2240 id x = [[MyObj12706177 alloc] initX]; //expected-warning {{Potential leak of an object}} 2241 [x release]; 2242} 2243@end 2244 2245//===----------------------------------------------------------------------===// 2246// CFAutorelease 2247//===----------------------------------------------------------------------===// 2248 2249CFTypeRef getAutoreleasedCFType() { 2250 extern CFTypeRef CFCreateSomething(); 2251 return CFAutorelease(CFCreateSomething()); // no-warning 2252} 2253 2254CFTypeRef getIncorrectlyAutoreleasedCFType() { 2255 extern CFTypeRef CFGetSomething(); 2256 return CFAutorelease(CFGetSomething()); // expected-warning{{Object autoreleased too many times}} 2257} 2258 2259CFTypeRef createIncorrectlyAutoreleasedCFType() { 2260 extern CFTypeRef CFCreateSomething(); 2261 return CFAutorelease(CFCreateSomething()); // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 2262} 2263 2264void useAfterAutorelease() { 2265 extern CFTypeRef CFCreateSomething(); 2266 CFTypeRef obj = CFCreateSomething(); 2267 CFAutorelease(obj); 2268 2269 extern void useCF(CFTypeRef); 2270 useCF(obj); // no-warning 2271} 2272 2273void useAfterRelease() { 2274 // Sanity check that the previous example would have warned with CFRelease. 2275 extern CFTypeRef CFCreateSomething(); 2276 CFTypeRef obj = CFCreateSomething(); 2277 CFRelease(obj); 2278 2279 extern void useCF(CFTypeRef); 2280 useCF(obj); // expected-warning{{Reference-counted object is used after it is released}} 2281} 2282 2283void testAutoreleaseReturnsInput() { 2284 extern CFTypeRef CFCreateSomething(); 2285 CFTypeRef obj = CFCreateSomething(); // expected-warning{{Potential leak of an object stored into 'obj'}} 2286 CFTypeRef second = CFAutorelease(obj); 2287 CFRetain(second); 2288} 2289 2290CFTypeRef testAutoreleaseReturnsInputSilent() { 2291 extern CFTypeRef CFCreateSomething(); 2292 CFTypeRef obj = CFCreateSomething(); 2293 CFTypeRef alias = CFAutorelease(obj); 2294 CFRetain(alias); 2295 CFRelease(obj); 2296 return obj; // no-warning 2297} 2298 2299void autoreleaseTypedObject() { 2300 CFArrayRef arr = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 2301 CFAutorelease((CFTypeRef)arr); // no-warning 2302} 2303 2304void autoreleaseReturningTypedObject() { 2305 CFArrayRef arr = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Potential leak of an object stored into 'arr'}} 2306 CFArrayRef alias = (CFArrayRef)CFAutorelease((CFTypeRef)arr); 2307 CFRetain(alias); 2308} 2309 2310CFArrayRef autoreleaseReturningTypedObjectSilent() { 2311 CFArrayRef arr = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 2312 CFArrayRef alias = (CFArrayRef)CFAutorelease((CFTypeRef)arr); 2313 CFRetain(alias); 2314 CFRelease(arr); 2315 return alias; // no-warning 2316} 2317 2318void autoreleaseObjC() { 2319 id obj = [@1 retain]; 2320 CFAutorelease(obj); // no-warning 2321 2322 id anotherObj = @1; 2323 CFAutorelease(anotherObj); 2324} // expected-warning{{Object autoreleased too many times}} 2325 2326//===----------------------------------------------------------------------===// 2327// <rdar://problem/13783514> xpc_connection_set_finalizer_f 2328//===----------------------------------------------------------------------===// 2329 2330typedef xpc_object_t xpc_connection_t; 2331typedef void (*xpc_finalizer_t)(void *value); 2332void xpc_connection_set_context(xpc_connection_t connection, void *ctx); 2333void xpc_connection_set_finalizer_f(xpc_connection_t connection, 2334 xpc_finalizer_t finalizer); 2335void releaseAfterXPC(void *context) { 2336 [(NSArray *)context release]; 2337} 2338 2339void rdar13783514(xpc_connection_t connection) { 2340 xpc_connection_set_context(connection, [[NSMutableArray alloc] init]); 2341 xpc_connection_set_finalizer_f(connection, releaseAfterXPC); 2342} // no-warning 2343 2344// Do not report leaks when object is cleaned up with __attribute__((cleanup ..)). 2345inline static void cleanupFunction(void *tp) { 2346 CFTypeRef x = *(CFTypeRef *)tp; 2347 if (x) { 2348 CFRelease(x); 2349 } 2350} 2351#define ADDCLEANUP __attribute__((cleanup(cleanupFunction))) 2352void foo() { 2353 ADDCLEANUP CFStringRef myString; 2354 myString = CFStringCreateWithCString(0, "hello world", kCFStringEncodingUTF8); 2355 ADDCLEANUP CFStringRef myString2 = 2356 CFStringCreateWithCString(0, "hello world", kCFStringEncodingUTF8); 2357} 2358 2359//===----------------------------------------------------------------------===// 2360// Handle NSNull 2361//===----------------------------------------------------------------------===// 2362 2363__attribute__((ns_returns_retained)) 2364id returnNSNull() { 2365 return [NSNull null]; // no-warning 2366} 2367 2368//===----------------------------------------------------------------------===// 2369// cf_returns_[not_]retained on parameters 2370//===----------------------------------------------------------------------===// 2371 2372void testCFReturnsNotRetained() { 2373 extern void getViaParam(CFTypeRef * CF_RETURNS_NOT_RETAINED outObj); 2374 CFTypeRef obj; 2375 getViaParam(&obj); 2376 CFRelease(obj); // // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2377} 2378 2379void testCFReturnsNotRetainedAnnotated() { 2380 extern void getViaParam2(CFTypeRef * _Nonnull CF_RETURNS_NOT_RETAINED outObj); 2381 CFTypeRef obj; 2382 getViaParam2(&obj); 2383 CFRelease(obj); // // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2384} 2385 2386void testCFReturnsRetained() { 2387 extern int copyViaParam(CFTypeRef * CF_RETURNS_RETAINED outObj); 2388 CFTypeRef obj; 2389 copyViaParam(&obj); 2390 CFRelease(obj); 2391 CFRelease(obj); // // FIXME-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2392} 2393 2394void testCFReturnsRetainedError() { 2395 extern int copyViaParam(CFTypeRef * CF_RETURNS_RETAINED outObj); 2396 CFTypeRef obj; 2397 if (copyViaParam(&obj) == -42) 2398 return; // no-warning 2399 CFRelease(obj); 2400} 2401