1 // RUN: rm -rf %t 2 // RUN: %clang_cc1 -fblocks -objcmt-migrate-annotation -objcmt-migrate-instancetype -objcmt-migrate-readwrite-property -mt-migrate-directory %t %s -x objective-c -triple x86_64-apple-darwin11 3 // RUN: c-arcmt-test -mt-migrate-directory %t | arcmt-test -verify-transformed-files %s.result 4 // RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin10 -fsyntax-only -x objective-c %s.result 5 6 #ifndef CF_IMPLICIT_BRIDGING_ENABLED 7 #if __has_feature(arc_cf_code_audited) 8 #define CF_IMPLICIT_BRIDGING_ENABLED _Pragma("clang arc_cf_code_audited begin") 9 #else 10 #define CF_IMPLICIT_BRIDGING_ENABLED 11 #endif 12 #endif 13 14 #ifndef CF_IMPLICIT_BRIDGING_DISABLED 15 #if __has_feature(arc_cf_code_audited) 16 #define CF_IMPLICIT_BRIDGING_DISABLED _Pragma("clang arc_cf_code_audited end") 17 #else 18 #define CF_IMPLICIT_BRIDGING_DISABLED 19 #endif 20 #endif 21 22 #if __has_feature(attribute_ns_returns_retained) 23 #define NS_RETURNS_RETAINED __attribute__((ns_returns_retained)) 24 #endif 25 #if __has_feature(attribute_cf_returns_retained) 26 #define CF_RETURNS_RETAINED __attribute__((cf_returns_retained)) 27 #endif 28 #if __has_feature(attribute_ns_returns_not_retained) 29 #define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained)) 30 #endif 31 #if __has_feature(attribute_cf_returns_not_retained) 32 #define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained)) 33 #endif 34 #if __has_feature(attribute_ns_consumes_self) 35 #define NS_CONSUMES_SELF __attribute__((ns_consumes_self)) 36 #endif 37 #if __has_feature(attribute_ns_consumed) 38 #define NS_CONSUMED __attribute__((ns_consumed)) 39 #endif 40 #if __has_feature(attribute_cf_consumed) 41 #define CF_CONSUMED __attribute__((cf_consumed)) 42 #endif 43 #if __has_attribute(ns_returns_autoreleased) 44 #define NS_RETURNS_AUTORELEASED __attribute__((ns_returns_autoreleased)) 45 #endif 46 47 //===----------------------------------------------------------------------===// 48 // The following code is reduced using delta-debugging from Mac OS X headers: 49 // 50 // #include <Cocoa/Cocoa.h> 51 // #include <CoreFoundation/CoreFoundation.h> 52 // #include <DiskArbitration/DiskArbitration.h> 53 // #include <QuartzCore/QuartzCore.h> 54 // #include <Quartz/Quartz.h> 55 // #include <IOKit/IOKitLib.h> 56 // 57 // It includes the basic definitions for the test cases below. 58 //===----------------------------------------------------------------------===// 59 60 typedef unsigned int __darwin_natural_t; 61 typedef unsigned long uintptr_t; 62 typedef unsigned int uint32_t; 63 typedef unsigned long long uint64_t; 64 typedef unsigned int UInt32; 65 typedef signed long CFIndex; 66 typedef CFIndex CFByteOrder; 67 typedef struct { 68 CFIndex location; 69 CFIndex length; 70 } CFRange; 71 static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) { 72 CFRange range; 73 range.location = loc; 74 range.length = len; 75 return range; 76 } 77 typedef const void * CFTypeRef; 78 typedef const struct __CFString * CFStringRef; 79 typedef const struct __CFAllocator * CFAllocatorRef; 80 extern const CFAllocatorRef kCFAllocatorDefault; 81 extern CFTypeRef CFRetain(CFTypeRef cf); 82 extern void CFRelease(CFTypeRef cf); 83 extern CFTypeRef CFMakeCollectable(CFTypeRef cf); 84 typedef struct { 85 } 86 CFArrayCallBacks; 87 extern const CFArrayCallBacks kCFTypeArrayCallBacks; 88 typedef const struct __CFArray * CFArrayRef; 89 typedef struct __CFArray * CFMutableArrayRef; 90 extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks); 91 extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx); 92 extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value); 93 typedef struct { 94 } 95 CFDictionaryKeyCallBacks; 96 extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks; 97 typedef struct { 98 } 99 CFDictionaryValueCallBacks; 100 extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks; 101 typedef const struct __CFDictionary * CFDictionaryRef; 102 typedef struct __CFDictionary * CFMutableDictionaryRef; 103 extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks); 104 typedef UInt32 CFStringEncoding; 105 enum { 106 kCFStringEncodingMacRoman = 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 }; 107 extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding); 108 typedef double CFTimeInterval; 109 typedef CFTimeInterval CFAbsoluteTime; 110 extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void); 111 typedef const struct __CFDate * CFDateRef; 112 extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at); 113 extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate); 114 typedef __darwin_natural_t natural_t; 115 typedef natural_t mach_port_name_t; 116 typedef mach_port_name_t mach_port_t; 117 typedef int kern_return_t; 118 typedef kern_return_t mach_error_t; 119 enum { 120 kCFNumberSInt8Type = 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 }; 121 typedef CFIndex CFNumberType; 122 typedef const struct __CFNumber * CFNumberRef; 123 extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr); 124 typedef const struct __CFAttributedString *CFAttributedStringRef; 125 typedef struct __CFAttributedString *CFMutableAttributedStringRef; 126 extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ; 127 extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ; 128 extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ; 129 typedef signed char BOOL; 130 typedef unsigned long NSUInteger; 131 @class NSString, Protocol; 132 extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2))); 133 typedef struct _NSZone NSZone; 134 @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; 135 @protocol NSObject 136 - (BOOL)isEqual:(id)object; 137 - (id)retain; 138 - (oneway void)release; 139 - (id)autorelease; 140 - (NSString *)description; 141 - (id)init; 142 @end 143 @protocol NSCopying 144 - (id)copyWithZone:(NSZone *)zone; 145 @end 146 @protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; 147 @end 148 @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; 149 @end 150 @interface NSObject <NSObject> {} 151 + (id)allocWithZone:(NSZone *)zone; 152 + (id)alloc; 153 + (id)new; 154 - (void)dealloc; 155 @end 156 @interface NSObject (NSCoderMethods) 157 - (id)awakeAfterUsingCoder:(NSCoder *)aDecoder; 158 @end 159 extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone); 160 typedef struct { 161 } 162 NSFastEnumerationState; 163 @protocol NSFastEnumeration 164 - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len; 165 @end 166 @class NSString, NSDictionary; 167 @interface NSValue : NSObject <NSCopying, NSCoding> - (void)getValue:(void *)value; 168 @end 169 @interface NSNumber : NSValue 170 - (char)charValue; 171 - (id)initWithInt:(int)value; 172 + (NSNumber *)numberWithInt:(int)value; 173 @end 174 @class NSString; 175 @interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 176 - (NSUInteger)count; 177 - (id)initWithObjects:(const id [])objects count:(NSUInteger)cnt; 178 + (id)arrayWithObject:(id)anObject; 179 + (id)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt; 180 + (id)arrayWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 181 - (id)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); 182 - (id)initWithArray:(NSArray *)array; 183 @end @interface NSArray (NSArrayCreation) + (id)array; 184 @end @interface NSAutoreleasePool : NSObject { 185 } 186 - (void)drain; 187 @end extern NSString * const NSBundleDidLoadNotification; 188 typedef double NSTimeInterval; 189 @interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; 190 @end typedef unsigned short unichar; 191 @interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> 192 - (NSUInteger)length; 193 - (NSString *)stringByAppendingString:(NSString *)aString; 194 - ( const char *)UTF8String; 195 - (id)initWithUTF8String:(const char *)nullTerminatedCString; 196 + (id)stringWithUTF8String:(const char *)nullTerminatedCString; 197 @end @class NSString, NSURL, NSError; 198 @interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length; 199 + (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length; 200 + (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b; 201 @end @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary; 202 @interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> 203 - (NSUInteger)count; 204 + (id)dictionaryWithObjects:(NSArray *)objects forKeys:(NSArray *)keys; 205 + (id)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt; 206 @end 207 @interface NSMutableDictionary : NSDictionary - (void)removeObjectForKey:(id)aKey; 208 - (void)setObject:(id)anObject forKey:(id)aKey; 209 @end @interface NSMutableDictionary (NSMutableDictionaryCreation) + (id)dictionaryWithCapacity:(NSUInteger)numItems; 210 @end typedef double CGFloat; 211 struct CGSize { 212 }; 213 typedef struct CGSize CGSize; 214 struct CGRect { 215 }; 216 typedef struct CGRect CGRect; 217 typedef mach_port_t io_object_t; 218 typedef char io_name_t[128]; 219 typedef io_object_t io_iterator_t; 220 typedef io_object_t io_service_t; 221 typedef struct IONotificationPort * IONotificationPortRef; 222 typedef void (*IOServiceMatchingCallback)( void * refcon, io_iterator_t iterator ); 223 io_service_t IOServiceGetMatchingService( mach_port_t masterPort, CFDictionaryRef matching ); 224 kern_return_t IOServiceGetMatchingServices( mach_port_t masterPort, CFDictionaryRef matching, io_iterator_t * existing ); 225 kern_return_t IOServiceAddNotification( mach_port_t masterPort, const io_name_t notificationType, CFDictionaryRef matching, mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) __attribute__((deprecated)); // expected-note {{'IOServiceAddNotification' declared here}} 226 kern_return_t IOServiceAddMatchingNotification( IONotificationPortRef notifyPort, const io_name_t notificationType, CFDictionaryRef matching, IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification ); 227 CFMutableDictionaryRef IOServiceMatching( const char * name ); 228 CFMutableDictionaryRef IOServiceNameMatching( const char * name ); 229 CFMutableDictionaryRef IOBSDNameMatching( mach_port_t masterPort, uint32_t options, const char * bsdName ); 230 CFMutableDictionaryRef IOOpenFirmwarePathMatching( mach_port_t masterPort, uint32_t options, const char * path ); 231 CFMutableDictionaryRef IORegistryEntryIDMatching( uint64_t entryID ); 232 typedef struct __DASession * DASessionRef; 233 extern DASessionRef DASessionCreate( CFAllocatorRef allocator ); 234 typedef struct __DADisk * DADiskRef; 235 extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name ); 236 extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media ); 237 extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk ); 238 extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk ); 239 @interface NSTask : NSObject - (id)init; 240 @end typedef struct CGColorSpace *CGColorSpaceRef; 241 typedef struct CGImage *CGImageRef; 242 typedef struct CGLayer *CGLayerRef; 243 @interface NSResponder : NSObject <NSCoding> { 244 } 245 @end @protocol NSAnimatablePropertyContainer - (id)animator; 246 @end extern NSString *NSAnimationTriggerOrderIn ; 247 @interface NSView : NSResponder <NSAnimatablePropertyContainer> { 248 } 249 @end @protocol NSValidatedUserInterfaceItem - (SEL)action; 250 @end @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem; 251 @end @class NSDate, NSDictionary, NSError, NSException, NSNotification; 252 @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError; 253 @interface NSApplication : NSResponder <NSUserInterfaceValidations> { 254 } 255 - (void)beginSheet:(NSWindow *)sheet modalForWindow:(NSWindow *)docWindow modalDelegate:(id)modalDelegate didEndSelector:(SEL)didEndSelector contextInfo:(void *)contextInfo; 256 @end enum { 257 NSTerminateCancel = 0, NSTerminateNow = 1, NSTerminateLater = 2 }; 258 typedef NSUInteger NSApplicationTerminateReply; 259 @protocol NSApplicationDelegate <NSObject> @optional - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender; 260 @end @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView; 261 @interface NSCell : NSObject <NSCopying, NSCoding> { 262 } 263 @end 264 typedef struct { 265 } 266 CVTimeStamp; 267 @interface CIImage : NSObject <NSCoding, NSCopying> { 268 } 269 typedef int CIFormat; 270 @end enum { 271 kDAReturnSuccess = 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 }; 272 typedef mach_error_t DAReturn; 273 typedef const struct __DADissenter * DADissenterRef; 274 extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string ); 275 @interface CIContext: NSObject { 276 } 277 - (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r; 278 - (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs; 279 - (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d; 280 @end extern NSString* const QCRendererEventKey; 281 @protocol QCCompositionRenderer - (NSDictionary*) attributes; 282 @end @interface QCRenderer : NSObject <QCCompositionRenderer> { 283 } 284 - (id) createSnapshotImageOfType:(NSString*)type; 285 @end extern NSString* const QCViewDidStartRenderingNotification; 286 @interface QCView : NSView <QCCompositionRenderer> { 287 } 288 - (id) createSnapshotImageOfType:(NSString*)type; 289 @end enum { 290 ICEXIFOrientation1 = 1, ICEXIFOrientation2 = 2, ICEXIFOrientation3 = 3, ICEXIFOrientation4 = 4, ICEXIFOrientation5 = 5, ICEXIFOrientation6 = 6, ICEXIFOrientation7 = 7, ICEXIFOrientation8 = 8, }; 291 @class ICDevice; 292 @protocol ICDeviceDelegate <NSObject> @required - (void)didRemoveDevice:(ICDevice*)device; 293 @end extern NSString *const ICScannerStatusWarmingUp; 294 @class ICScannerDevice; 295 @protocol ICScannerDeviceDelegate <ICDeviceDelegate> @optional - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner; 296 @end 297 298 typedef long unsigned int __darwin_size_t; 299 typedef __darwin_size_t size_t; 300 typedef unsigned long CFTypeID; 301 struct CGPoint { 302 CGFloat x; 303 CGFloat y; 304 }; 305 typedef struct CGPoint CGPoint; 306 typedef struct CGGradient *CGGradientRef; 307 typedef uint32_t CGGradientDrawingOptions; 308 extern CFTypeID CGGradientGetTypeID(void); 309 extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef 310 space, const CGFloat components[], const CGFloat locations[], size_t count); 311 extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space, 312 CFArrayRef colors, const CGFloat locations[]); 313 extern CGGradientRef CGGradientRetain(CGGradientRef gradient); 314 extern void CGGradientRelease(CGGradientRef gradient); 315 typedef struct CGContext *CGContextRef; 316 extern void CGContextDrawLinearGradient(CGContextRef context, 317 CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint, 318 CGGradientDrawingOptions options); 319 extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void); 320 321 @interface NSMutableArray : NSObject 322 - (void)addObject:(id)object; 323 + (id)array; 324 @end 325 326 // This is how NSMakeCollectable is declared in the OS X 10.8 headers. 327 id NSMakeCollectable(CFTypeRef __attribute__((cf_consumed))) __attribute__((ns_returns_retained)); 328 329 typedef const struct __CFUUID * CFUUIDRef; 330 331 extern 332 void *CFPlugInInstanceCreate(CFAllocatorRef allocator, CFUUIDRef factoryUUID, CFUUIDRef typeUUID); 333 334 //===----------------------------------------------------------------------===// 335 // Test cases. 336 //===----------------------------------------------------------------------===// 337 338 CFAbsoluteTime f1() { 339 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 340 CFDateRef date = CFDateCreate(0, t); 341 CFRetain(date); 342 CFRelease(date); 343 CFDateGetAbsoluteTime(date); // no-warning 344 CFRelease(date); 345 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 346 return t; 347 } 348 349 CFAbsoluteTime f2() { 350 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 351 CFDateRef date = CFDateCreate(0, t); 352 [((NSDate*) date) retain]; 353 CFRelease(date); 354 CFDateGetAbsoluteTime(date); // no-warning 355 [((NSDate*) date) release]; 356 t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} 357 return t; 358 } 359 360 361 NSDate* global_x; 362 363 // Test to see if we suppress an error when we store the pointer 364 // to a global. 365 366 CFAbsoluteTime f3() { 367 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 368 CFDateRef date = CFDateCreate(0, t); 369 [((NSDate*) date) retain]; 370 CFRelease(date); 371 CFDateGetAbsoluteTime(date); // no-warning 372 global_x = (NSDate*) date; 373 [((NSDate*) date) release]; 374 t = CFDateGetAbsoluteTime(date); // no-warning 375 return t; 376 } 377 378 //--------------------------------------------------------------------------- 379 // Test case 'f4' differs for region store and basic store. See 380 // retain-release-region-store.m and retain-release-basic-store.m. 381 //--------------------------------------------------------------------------- 382 383 // Test a leak. 384 385 CFAbsoluteTime f5(int x) { 386 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 387 CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}} 388 389 if (x) 390 CFRelease(date); 391 392 return t; 393 } 394 395 // Test a leak involving the return. 396 397 CFDateRef f6(int x) { 398 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning{{leak}} 399 CFRetain(date); 400 return date; 401 } 402 403 // Test a leak involving an overwrite. 404 405 CFDateRef f7() { 406 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); //expected-warning{{leak}} 407 CFRetain(date); 408 date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning {{leak}} 409 return date; 410 } 411 412 // Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and 413 // has the word create. 414 CFDateRef MyDateCreate(); 415 416 CFDateRef f8() { 417 CFDateRef date = MyDateCreate(); // expected-warning{{leak}} 418 CFRetain(date); 419 return date; 420 } 421 422 __attribute__((cf_returns_retained)) CFDateRef f9() { 423 CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // no-warning 424 int *p = 0; 425 // When allocations fail, CFDateCreate can return null. 426 if (!date) *p = 1; // expected-warning{{null}} 427 return date; 428 } 429 430 // Handle DiskArbitration API: 431 // 432 // http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/ 433 // 434 void f10(io_service_t media, DADiskRef d, CFStringRef s) { 435 DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}} 436 if (disk) NSLog(@"ok"); 437 438 disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}} 439 if (disk) NSLog(@"ok"); 440 441 CFDictionaryRef dict = DADiskCopyDescription(d); // expected-warning{{leak}} 442 if (dict) NSLog(@"ok"); 443 444 disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}} 445 if (disk) NSLog(@"ok"); 446 447 DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault, // expected-warning{{leak}} 448 kDAReturnSuccess, s); 449 if (dissenter) NSLog(@"ok"); 450 451 DASessionRef session = DASessionCreate(kCFAllocatorDefault); // expected-warning{{leak}} 452 if (session) NSLog(@"ok"); 453 } 454 455 // Test retain/release checker with CFString and CFMutableArray. 456 void f11() { 457 // Create the array. 458 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 459 460 // Create a string. 461 CFStringRef s1 = CFStringCreateWithCString(0, "hello world", 462 kCFStringEncodingUTF8); 463 464 // Add the string to the array. 465 CFArrayAppendValue(A, s1); 466 467 // Decrement the reference count. 468 CFRelease(s1); // no-warning 469 470 // Get the string. We don't own it. 471 s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0); 472 473 // Release the array. 474 CFRelease(A); // no-warning 475 476 // Release the string. This is a bug. 477 CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}} 478 } 479 480 // PR 3337: Handle functions declared using typedefs. 481 typedef CFTypeRef CREATEFUN(); 482 CFTypeRef MyCreateFun(); 483 484 void f12() { 485 CFTypeRef o = MyCreateFun(); // expected-warning {{leak}} 486 } 487 488 void f13_autorelease() { 489 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 490 [(id) A autorelease]; // no-warning 491 } 492 493 void f13_autorelease_b() { 494 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 495 [(id) A autorelease]; 496 [(id) A autorelease]; 497 } // expected-warning{{Object autoreleased too many times}} 498 499 CFMutableArrayRef f13_autorelease_c() { 500 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 501 [(id) A autorelease]; 502 [(id) A autorelease]; 503 return A; // expected-warning{{Object autoreleased too many times}} 504 } 505 506 CFMutableArrayRef f13_autorelease_d() { 507 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 508 [(id) A autorelease]; 509 [(id) A autorelease]; 510 CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object autoreleased too many times}} 511 CFRelease(B); // no-warning 512 while (1) {} 513 } 514 515 516 // This case exercises the logic where the leak site is the same as the allocation site. 517 void f14_leakimmediately() { 518 CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}} 519 } 520 521 // Test that we track an allocated object beyond the point where the *name* 522 // of the variable storing the reference is no longer live. 523 void f15() { 524 // Create the array. 525 CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); 526 CFMutableArrayRef *B = &A; 527 // At this point, the name 'A' is no longer live. 528 CFRelease(*B); // no-warning 529 } 530 531 // Test when we pass NULL to CFRetain/CFRelease/CFMakeCollectable/CFAutorelease. 532 void f16(int x, CFTypeRef p) { 533 if (p) 534 return; 535 536 switch (x) { 537 case 0: 538 CFRelease(p); 539 break; 540 case 1: 541 CFRetain(p); 542 break; 543 case 2: 544 CFMakeCollectable(p); 545 break; 546 case 3: 547 CFAutorelease(p); 548 break; 549 default: 550 break; 551 } 552 } 553 554 // Test that an object is non-null after CFRetain/CFRelease/CFMakeCollectable/CFAutorelease. 555 void f17(int x, CFTypeRef p) { 556 switch (x) { 557 case 0: 558 CFRelease(p); 559 if (!p) 560 CFRelease(0); // no-warning 561 break; 562 case 1: 563 CFRetain(p); 564 if (!p) 565 CFRetain(0); // no-warning 566 break; 567 case 2: 568 CFMakeCollectable(p); 569 if (!p) 570 CFMakeCollectable(0); // no-warning 571 break; 572 case 3: 573 CFAutorelease(p); 574 if (!p) 575 CFAutorelease(0); // no-warning 576 break; 577 default: 578 break; 579 } 580 } 581 582 // Test basic tracking of ivars associated with 'self'. For the retain/release 583 // checker we currently do not want to flag leaks associated with stores 584 // of tracked objects to ivars. 585 @interface SelfIvarTest : NSObject { 586 id myObj; 587 } 588 - (void)test_self_tracking; 589 @end 590 591 @implementation SelfIvarTest 592 - (void)test_self_tracking { 593 myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 594 } 595 @end 596 597 // Test return of non-owned objects in contexts where an owned object 598 // is expected. 599 @interface TestReturnNotOwnedWhenExpectedOwned 600 - (NSString*)newString; 601 @end 602 603 @implementation TestReturnNotOwnedWhenExpectedOwned 604 - (NSString*)newString { 605 NSString *s = [NSString stringWithUTF8String:"hello"]; 606 return s; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 607 } 608 @end 609 610 // <rdar://problem/6659160> 611 int isFoo(char c); 612 613 static void rdar_6659160(char *inkind, char *inname) 614 { 615 // We currently expect that [NSObject alloc] cannot fail. This 616 // will be a toggled flag in the future. It can indeed return null, but 617 // Cocoa programmers generally aren't expected to reason about out-of-memory 618 // conditions. 619 NSString *kind = [[NSString alloc] initWithUTF8String:inkind]; // expected-warning{{leak}} 620 621 // We do allow stringWithUTF8String to fail. This isn't really correct, as 622 // far as returning 0. In most error conditions it will throw an exception. 623 // If allocation fails it could return 0, but again this 624 // isn't expected. 625 NSString *name = [NSString stringWithUTF8String:inname]; 626 if(!name) 627 return; 628 629 const char *kindC = 0; 630 const char *nameC = 0; 631 632 // In both cases, we cannot reach a point down below where we 633 // dereference kindC or nameC with either being null. This is because 634 // we assume that [NSObject alloc] doesn't fail and that we have the guard 635 // up above. 636 637 if(kind) 638 kindC = [kind UTF8String]; 639 if(name) 640 nameC = [name UTF8String]; 641 if(!isFoo(kindC[0])) // expected-warning{{null}} 642 return; 643 if(!isFoo(nameC[0])) // no-warning 644 return; 645 646 [kind release]; 647 [name release]; // expected-warning{{Incorrect decrement of the reference count}} 648 } 649 650 // PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming 651 // conventions with respect to 'return'ing ownership. 652 @interface PR3677: NSObject @end 653 @implementation PR3677 654 + (id)allocWithZone:(NSZone *)inZone { 655 return [super allocWithZone:inZone]; // no-warning 656 } 657 @end 658 659 // PR 3820 - Reason about calls to -dealloc 660 void pr3820_DeallocInsteadOfRelease(void) 661 { 662 id foo = [[NSString alloc] init]; // no-warning 663 [foo dealloc]; 664 // foo is not leaked, since it has been deallocated. 665 } 666 667 void pr3820_ReleaseAfterDealloc(void) 668 { 669 id foo = [[NSString alloc] init]; 670 [foo dealloc]; 671 [foo release]; // expected-warning{{used after it is release}} 672 // NSInternalInconsistencyException: message sent to deallocated object 673 } 674 675 void pr3820_DeallocAfterRelease(void) 676 { 677 NSLog(@"\n\n[%s]", __FUNCTION__); 678 id foo = [[NSString alloc] init]; 679 [foo release]; 680 [foo dealloc]; // expected-warning{{used after it is released}} 681 // message sent to released object 682 } 683 684 // From <rdar://problem/6704930>. The problem here is that 'length' binds to 685 // '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to 686 // reason about '($0 - 1) > constant'. As a temporary hack, we drop the value 687 // of '($0 - 1)' and conjure a new symbol. 688 void rdar6704930(unsigned char *s, unsigned int length) { 689 NSString* name = 0; 690 if (s != 0) { 691 if (length > 0) { 692 while (length > 0) { 693 if (*s == ':') { 694 ++s; 695 --length; 696 name = [[NSString alloc] init]; // no-warning 697 break; 698 } 699 ++s; 700 --length; 701 } 702 if ((length == 0) && (name != 0)) { 703 [name release]; 704 name = 0; 705 } 706 if (length == 0) { // no ':' found -> use it all as name 707 name = [[NSString alloc] init]; // no-warning 708 } 709 } 710 } 711 712 if (name != 0) { 713 [name release]; 714 } 715 } 716 717 //===----------------------------------------------------------------------===// 718 // <rdar://problem/6833332> 719 // One build of the analyzer accidentally stopped tracking the allocated 720 // object after the 'retain'. 721 //===----------------------------------------------------------------------===// 722 723 @interface rdar_6833332 : NSObject <NSApplicationDelegate> { 724 NSWindow *window; 725 } 726 @property (nonatomic, retain) NSWindow *window; 727 @end 728 729 @implementation rdar_6833332 730 @synthesize window; 731 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification { 732 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 733 734 [dict setObject:@"foo" forKey:@"bar"]; 735 736 NSLog(@"%@", dict); 737 } 738 - (void)dealloc { 739 [window release]; 740 [super dealloc]; 741 } 742 743 - (void)radar10102244 { 744 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 745 if (window) 746 NSLog(@"%@", window); 747 } 748 @end 749 750 //===----------------------------------------------------------------------===// 751 // <rdar://problem/6257780> clang checker fails to catch use-after-release 752 //===----------------------------------------------------------------------===// 753 754 int rdar_6257780_Case1() { 755 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 756 NSArray *array = [NSArray array]; 757 [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 758 [pool drain]; 759 return 0; 760 } 761 762 //===----------------------------------------------------------------------===// 763 // <rdar://problem/10640253> Analyzer is confused about NSAutoreleasePool -allocWithZone:. 764 //===----------------------------------------------------------------------===// 765 766 void rdar_10640253_autorelease_allocWithZone() { 767 NSAutoreleasePool *pool = [[NSAutoreleasePool allocWithZone:(NSZone*)0] init]; 768 (void) pool; 769 } 770 771 //===----------------------------------------------------------------------===// 772 // <rdar://problem/6866843> Checker should understand new/setObject:/release constructs 773 //===----------------------------------------------------------------------===// 774 775 void rdar_6866843() { 776 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 777 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init]; 778 NSArray* array = [[NSArray alloc] init]; 779 [dictionary setObject:array forKey:@"key"]; 780 [array release]; 781 // Using 'array' here should be fine 782 NSLog(@"array = %@\n", array); // no-warning 783 // Now the array is released 784 [dictionary release]; 785 [pool drain]; 786 } 787 788 789 //===----------------------------------------------------------------------===// 790 // <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects 791 //===----------------------------------------------------------------------===// 792 793 typedef CFTypeRef OtherRef; 794 795 @interface RDar6877235 : NSObject {} 796 - (CFTypeRef)_copyCFTypeRef; 797 - (OtherRef)_copyOtherRef; 798 @end 799 800 @implementation RDar6877235 801 - (CFTypeRef)_copyCFTypeRef { 802 return [[NSString alloc] init]; // no-warning 803 } 804 - (OtherRef)_copyOtherRef { 805 return [[NSString alloc] init]; // no-warning 806 } 807 @end 808 809 //===----------------------------------------------------------------------===// 810 // <rdar://problem/6320065> false positive - init method returns an object 811 // owned by caller 812 //===----------------------------------------------------------------------===// 813 814 @interface RDar6320065 : NSObject { 815 NSString *_foo; 816 } 817 - (id)initReturningNewClass; 818 - (id)_initReturningNewClassBad; 819 - (id)initReturningNewClassBad2; 820 @end 821 822 @interface RDar6320065Subclass : RDar6320065 823 @end 824 825 @implementation RDar6320065 826 - (id)initReturningNewClass { 827 [self release]; 828 self = [[RDar6320065Subclass alloc] init]; // no-warning 829 return self; 830 } 831 - (id)_initReturningNewClassBad { 832 [self release]; 833 [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}} 834 return self; 835 } 836 - (id)initReturningNewClassBad2 { 837 [self release]; 838 self = [[RDar6320065Subclass alloc] init]; 839 return [self autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} 840 } 841 842 @end 843 844 @implementation RDar6320065Subclass 845 @end 846 847 int RDar6320065_test() { 848 RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning 849 [test release]; 850 return 0; 851 } 852 853 //===----------------------------------------------------------------------===// 854 // <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 855 // and claims the receiver 856 //===----------------------------------------------------------------------===// 857 858 @interface RDar7129086 : NSObject {} @end 859 @implementation RDar7129086 860 - (id)awakeAfterUsingCoder:(NSCoder *)aDecoder { 861 [self release]; // no-warning 862 return [NSString alloc]; // no-warning 863 } 864 @end 865 866 //===----------------------------------------------------------------------===// 867 // <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a 868 // retained object 869 //===----------------------------------------------------------------------===// 870 871 @interface RDar6859457 : NSObject {} 872 - (NSString*) NoCopyString; 873 - (NSString*) noCopyString; 874 @end 875 876 @implementation RDar6859457 877 - (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 878 - (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} 879 @end 880 881 void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) { 882 [x NoCopyString]; // expected-warning{{leak}} 883 [x noCopyString]; // expected-warning{{leak}} 884 [NSData dataWithBytesNoCopy:bytes length:dataLength]; // no-warning 885 [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning 886 } 887 888 //===----------------------------------------------------------------------===// 889 // PR 4230 - an autorelease pool is not necessarily leaked during a premature 890 // return 891 //===----------------------------------------------------------------------===// 892 893 static void PR4230(void) 894 { 895 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning 896 NSString *object = [[[NSString alloc] init] autorelease]; // no-warning 897 return; 898 } 899 900 static void PR4230_new(void) 901 { 902 NSAutoreleasePool *pool = [NSAutoreleasePool new]; // no-warning 903 NSString *object = [[[NSString alloc] init] autorelease]; // no-warning 904 return; 905 } 906 907 //===----------------------------------------------------------------------===// 908 // Method name that has a null IdentifierInfo* for its first selector slot. 909 // This test just makes sure that we handle it. 910 //===----------------------------------------------------------------------===// 911 912 @interface TestNullIdentifier 913 @end 914 915 @implementation TestNullIdentifier 916 + (id):(int)x, ... { 917 return [[NSString alloc] init]; // expected-warning{{leak}} 918 } 919 @end 920 921 //===----------------------------------------------------------------------===// 922 // <rdar://problem/6893565> don't flag leaks for return types that cannot be 923 // determined to be CF types 924 //===----------------------------------------------------------------------===// 925 926 // We don't know if 'struct s6893565' represents a Core Foundation type, so 927 // we shouldn't emit an error here. 928 typedef struct s6893565* TD6893565; 929 930 @interface RDar6893565 {} 931 -(TD6893565)newThing; 932 @end 933 934 @implementation RDar6893565 935 -(TD6893565)newThing { 936 return (TD6893565) [[NSString alloc] init]; // no-warning 937 } 938 @end 939 940 //===----------------------------------------------------------------------===// 941 // <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods 942 //===----------------------------------------------------------------------===// 943 944 void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context, 945 NSString *str, CIImage *img, CGRect rect, 946 CIFormat form, CGColorSpaceRef cs) { 947 [view createSnapshotImageOfType:str]; // expected-warning{{leak}} 948 [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}} 949 [context createCGImage:img fromRect:rect]; // expected-warning{{leak}} 950 [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}} 951 } 952 953 //===----------------------------------------------------------------------===// 954 // <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:] 955 // misinterpreted by clang scan-build 956 //===----------------------------------------------------------------------===// 957 958 void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) { 959 [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}} 960 } 961 962 //===----------------------------------------------------------------------===// 963 // <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 964 // checker 965 //===----------------------------------------------------------------------===// 966 967 void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options, const char * bsdName) { 968 IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}} 969 } 970 971 void IOServiceMatching_wrapper(const char * name) { 972 IOServiceMatching(name); // expected-warning{{leak}} 973 } 974 975 void IOServiceNameMatching_wrapper(const char * name) { 976 IOServiceNameMatching(name); // expected-warning{{leak}} 977 } 978 979 CF_RETURNS_RETAINED CFDictionaryRef CreateDict(); 980 981 void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType, 982 mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) { 983 984 CFDictionaryRef matching = CreateDict(); 985 CFRelease(matching); 986 IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}} 987 wakePort, reference, notification); 988 } 989 990 void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) { 991 IORegistryEntryIDMatching(entryID); // expected-warning{{leak}} 992 } 993 994 void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options, 995 const char * path) { 996 IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}} 997 } 998 999 void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) { 1000 CFDictionaryRef matching = CreateDict(); 1001 IOServiceGetMatchingService(masterPort, matching); 1002 CFRelease(matching); // expected-warning{{used after it is released}} 1003 } 1004 1005 void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) { 1006 CFDictionaryRef matching = CreateDict(); 1007 IOServiceGetMatchingServices(masterPort, matching, existing); 1008 CFRelease(matching); // expected-warning{{used after it is released}} 1009 } 1010 1011 void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 1012 IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) { 1013 1014 CFDictionaryRef matching = CreateDict(); 1015 IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification); 1016 CFRelease(matching); // expected-warning{{used after it is released}} 1017 } 1018 1019 //===----------------------------------------------------------------------===// 1020 // Test of handling objects whose references "escape" to containers. 1021 //===----------------------------------------------------------------------===// 1022 1023 void CFDictionaryAddValue(CFMutableDictionaryRef, void *, void *); 1024 1025 // <rdar://problem/6539791> 1026 void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) { 1027 CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); 1028 CFDictionaryAddValue(y, key, x); 1029 CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet 1030 signed z = 1; 1031 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 1032 if (value) { 1033 CFDictionaryAddValue(x, val_key, (void*)value); // no-warning 1034 CFRelease(value); 1035 CFDictionaryAddValue(y, val_key, (void*)value); // no-warning 1036 } 1037 } 1038 1039 // <rdar://problem/6560661> 1040 // Same issue, except with "AppendValue" functions. 1041 void rdar_6560661(CFMutableArrayRef x) { 1042 signed z = 1; 1043 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); 1044 // CFArrayAppendValue keeps a reference to value. 1045 CFArrayAppendValue(x, value); 1046 CFRelease(value); 1047 CFRetain(value); 1048 CFRelease(value); // no-warning 1049 } 1050 1051 // <rdar://problem/7152619> 1052 // Same issue, excwept with "CFAttributeStringSetAttribute". 1053 void rdar_7152619(CFStringRef str) { 1054 CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0); 1055 CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string); 1056 CFRelease(string); 1057 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1058 CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number); 1059 [number release]; 1060 [number retain]; 1061 CFRelease(attrString); 1062 } 1063 1064 //===----------------------------------------------------------------------===// 1065 // Test of handling CGGradientXXX functions. 1066 //===----------------------------------------------------------------------===// 1067 1068 void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1069 CGPoint myEndPoint) { 1070 size_t num_locations = 6; 1071 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1072 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1073 x, // Start color 1074 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1075 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1076 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1077 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1078 255.0/255.0,255.0/255.0, 255.0/255.0, x 1079 }; // End color 1080 1081 CGGradientRef myGradient = 1082 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}} 1083 components, locations, num_locations); 1084 1085 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1086 0); 1087 CGGradientRelease(myGradient); 1088 } 1089 1090 void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, 1091 CGPoint myEndPoint) { 1092 size_t num_locations = 6; 1093 CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; 1094 CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, 1095 x, // Start color 1096 207.0/255.0, 39.0/255.0, 39.0/255.0, x, 1097 147.0/255.0, 21.0/255.0, 22.0/255.0, x, 1098 175.0/255.0, 175.0/255.0, 175.0/255.0, x, 1099 255.0/255.0,255.0/255.0, 255.0/255.0, x, 1100 255.0/255.0,255.0/255.0, 255.0/255.0, x 1101 }; // End color 1102 1103 CGGradientRef myGradient = 1104 CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}} 1105 1106 CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, 1107 0); 1108 } 1109 1110 //===----------------------------------------------------------------------===// 1111 // <rdar://problem/7299394> clang false positive: retained instance passed to 1112 // thread in pthread_create marked as leak 1113 // 1114 // Until we have full IPA, the analyzer should stop tracking the reference 1115 // count of objects passed to pthread_create. 1116 // 1117 //===----------------------------------------------------------------------===// 1118 1119 struct _opaque_pthread_t {}; 1120 struct _opaque_pthread_attr_t {}; 1121 typedef struct _opaque_pthread_t *__darwin_pthread_t; 1122 typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t; 1123 typedef __darwin_pthread_t pthread_t; 1124 typedef __darwin_pthread_attr_t pthread_attr_t; 1125 typedef unsigned long __darwin_pthread_key_t; 1126 typedef __darwin_pthread_key_t pthread_key_t; 1127 1128 int pthread_create(pthread_t *, const pthread_attr_t *, 1129 void *(*)(void *), void *); 1130 1131 int pthread_setspecific(pthread_key_t key, const void *value); 1132 1133 void *rdar_7299394_start_routine(void *p) { 1134 [((id) p) release]; 1135 return 0; 1136 } 1137 void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) { 1138 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1139 pthread_create(thread, attr, rdar_7299394_start_routine, number); 1140 } 1141 void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) { 1142 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1143 } 1144 1145 //===----------------------------------------------------------------------===// 1146 // <rdar://problem/11282706> false positive with not understanding thread 1147 // local storage 1148 //===----------------------------------------------------------------------===// 1149 1150 void rdar11282706(pthread_key_t key) { 1151 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1152 pthread_setspecific(key, (void*) number); 1153 } 1154 1155 //===----------------------------------------------------------------------===// 1156 // <rdar://problem/7283567> False leak associated with call to 1157 // CVPixelBufferCreateWithBytes () 1158 // 1159 // According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and 1160 // CVPixelBufferCreateWithPlanarBytes can release (via a callback) the 1161 // pixel buffer object. These test cases show how the analyzer stops tracking 1162 // the reference count for the objects passed for this argument. This 1163 // could be made smarter. 1164 //===----------------------------------------------------------------------===// 1165 1166 typedef int int32_t; 1167 typedef UInt32 FourCharCode; 1168 typedef FourCharCode OSType; 1169 typedef uint64_t CVOptionFlags; 1170 typedef int32_t CVReturn; 1171 typedef struct __CVBuffer *CVBufferRef; 1172 typedef CVBufferRef CVImageBufferRef; 1173 typedef CVImageBufferRef CVPixelBufferRef; 1174 typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress ); 1175 1176 extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1177 size_t width, 1178 size_t height, 1179 OSType pixelFormatType, 1180 void *baseAddress, 1181 size_t bytesPerRow, 1182 CVPixelBufferReleaseBytesCallback releaseCallback, 1183 void *releaseRefCon, 1184 CFDictionaryRef pixelBufferAttributes, 1185 CVPixelBufferRef *pixelBufferOut) ; 1186 1187 typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] ); 1188 1189 extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator, 1190 size_t width, 1191 size_t height, 1192 OSType pixelFormatType, 1193 void *dataPtr, 1194 size_t dataSize, 1195 size_t numberOfPlanes, 1196 void *planeBaseAddress[], 1197 size_t planeWidth[], 1198 size_t planeHeight[], 1199 size_t planeBytesPerRow[], 1200 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1201 void *releaseRefCon, 1202 CFDictionaryRef pixelBufferAttributes, 1203 CVPixelBufferRef *pixelBufferOut) ; 1204 1205 extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, 1206 size_t width, 1207 size_t height, 1208 OSType pixelFormatType, 1209 void *baseAddress, 1210 size_t bytesPerRow, 1211 CVPixelBufferReleaseBytesCallback releaseCallback, 1212 void *releaseRefCon, 1213 CFDictionaryRef pixelBufferAttributes, 1214 CVPixelBufferRef *pixelBufferOut) ; 1215 1216 CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height, 1217 OSType pixelFormatType, void *baseAddress, 1218 size_t bytesPerRow, 1219 CVPixelBufferReleaseBytesCallback releaseCallback, 1220 CFDictionaryRef pixelBufferAttributes, 1221 CVPixelBufferRef *pixelBufferOut) { 1222 1223 // For the allocated object, it doesn't really matter what type it is 1224 // for the purpose of this test. All we want to show is that 1225 // this is freed later by the callback. 1226 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1227 1228 return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType, 1229 baseAddress, bytesPerRow, releaseCallback, 1230 number, // potentially released by callback 1231 pixelBufferAttributes, pixelBufferOut) ; 1232 } 1233 1234 CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height, 1235 OSType pixelFormatType, void *dataPtr, size_t dataSize, 1236 size_t numberOfPlanes, void *planeBaseAddress[], 1237 size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[], 1238 CVPixelBufferReleasePlanarBytesCallback releaseCallback, 1239 CFDictionaryRef pixelBufferAttributes, 1240 CVPixelBufferRef *pixelBufferOut) { 1241 1242 // For the allocated object, it doesn't really matter what type it is 1243 // for the purpose of this test. All we want to show is that 1244 // this is freed later by the callback. 1245 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1246 1247 return CVPixelBufferCreateWithPlanarBytes(allocator, 1248 width, height, pixelFormatType, dataPtr, dataSize, 1249 numberOfPlanes, planeBaseAddress, planeWidth, 1250 planeHeight, planeBytesPerRow, releaseCallback, 1251 number, // potentially released by callback 1252 pixelBufferAttributes, pixelBufferOut) ; 1253 } 1254 1255 //===----------------------------------------------------------------------===// 1256 // <rdar://problem/7358899> False leak associated with 1257 // CGBitmapContextCreateWithData 1258 //===----------------------------------------------------------------------===// 1259 typedef uint32_t CGBitmapInfo; 1260 typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data); 1261 1262 CGContextRef CGBitmapContextCreateWithData(void *data, 1263 size_t width, size_t height, size_t bitsPerComponent, 1264 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1265 CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo); 1266 1267 void rdar_7358899(void *data, 1268 size_t width, size_t height, size_t bitsPerComponent, 1269 size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, 1270 CGBitmapContextReleaseDataCallback releaseCallback) { 1271 1272 // For the allocated object, it doesn't really matter what type it is 1273 // for the purpose of this test. All we want to show is that 1274 // this is freed later by the callback. 1275 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1276 1277 CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}} 1278 bytesPerRow, space, bitmapInfo, releaseCallback, number); 1279 } 1280 1281 //===----------------------------------------------------------------------===// 1282 // <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to 1283 // start before '_' when determining Cocoa fundamental rule 1284 // 1285 // Previously the retain/release checker just skipped prefixes before the 1286 // first '_' entirely. Now the checker honors the prefix if it results in a 1287 // recognizable naming convention (e.g., 'new', 'init'). 1288 //===----------------------------------------------------------------------===// 1289 1290 @interface RDar7265711 {} 1291 - (id) new_stuff; 1292 @end 1293 1294 void rdar7265711_a(RDar7265711 *x) { 1295 id y = [x new_stuff]; // expected-warning{{leak}} 1296 } 1297 1298 void rdar7265711_b(RDar7265711 *x) { 1299 id y = [x new_stuff]; // no-warning 1300 [y release]; 1301 } 1302 1303 //===----------------------------------------------------------------------===// 1304 // <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a 1305 // retained reference 1306 //===----------------------------------------------------------------------===// 1307 1308 @interface NSCursor : NSObject 1309 + (NSCursor *)dragCopyCursor; 1310 @end 1311 1312 void rdar7306898(void) { 1313 // 'dragCopyCursor' does not follow Cocoa's fundamental rule. It is a noun, not an sentence 1314 // implying a 'copy' of something. 1315 NSCursor *c = [NSCursor dragCopyCursor]; // no-warning 1316 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1317 } 1318 1319 //===----------------------------------------------------------------------===// 1320 // <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class 1321 // directly is not likely what the user intended 1322 //===----------------------------------------------------------------------===// 1323 1324 @interface RDar7252064 : NSObject @end 1325 void rdar7252064(void) { 1326 [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1327 [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1328 [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}} 1329 [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}} 1330 } 1331 1332 //===----------------------------------------------------------------------===// 1333 // Tests of ownership attributes. 1334 //===----------------------------------------------------------------------===// 1335 1336 typedef NSString* MyStringTy; 1337 1338 @protocol FooP; 1339 1340 @interface TestOwnershipAttr : NSObject 1341 - (NSString*) returnsAnOwnedString NS_RETURNS_RETAINED; // no-warning 1342 - (NSString*) returnsAnOwnedCFString CF_RETURNS_RETAINED; // no-warning 1343 - (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning 1344 - (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning 1345 - (NSString*) newString_auto NS_RETURNS_AUTORELEASED; // no-warning 1346 - (NSString*) newStringNoAttr; 1347 - (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}} 1348 - (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED; 1349 + (void) consume:(id) NS_CONSUMED x; 1350 + (void) consume2:(id) CF_CONSUMED x; 1351 @end 1352 1353 static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions and methods}} 1354 1355 void test_attr_1(TestOwnershipAttr *X) { 1356 NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}} 1357 } 1358 1359 void test_attr_1b(TestOwnershipAttr *X) { 1360 NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}} 1361 } 1362 1363 void test_attr1c(TestOwnershipAttr *X) { 1364 NSString *str = [X newString]; // no-warning 1365 NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}} 1366 NSString *str3 = [X newString_auto]; // no-warning 1367 NSString *str4 = [[X newString_auto] retain]; // expected-warning {{leak}} 1368 } 1369 1370 void testattr2_a() { 1371 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}} 1372 } 1373 1374 void testattr2_b() { 1375 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // expected-warning{{leak}} 1376 } 1377 1378 void testattr2_b_11358224_self_assign_looses_the_leak() { 1379 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit];// expected-warning{{leak}} 1380 x = x; 1381 } 1382 1383 void testattr2_c() { 1384 TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning 1385 [x release]; 1386 } 1387 1388 void testattr3() { 1389 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1390 [TestOwnershipAttr consume:x]; 1391 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1392 [TestOwnershipAttr consume2:y]; 1393 } 1394 1395 void consume_ns(id NS_CONSUMED x); 1396 void consume_cf(id CF_CONSUMED x); 1397 1398 void testattr4() { 1399 TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning 1400 consume_ns(x); 1401 TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning 1402 consume_cf(y); 1403 } 1404 1405 @interface TestOwnershipAttr2 : NSObject 1406 - (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning 1407 @end 1408 1409 @implementation TestOwnershipAttr2 1410 - (NSString*) newString { 1411 return [NSString alloc]; // expected-warning {{Potential leak of an object}} 1412 } 1413 @end 1414 1415 @interface MyClassTestCFAttr : NSObject {} 1416 - (NSDate*) returnsCFRetained CF_RETURNS_RETAINED; 1417 - (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED; 1418 - (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED; 1419 - (CFDateRef) newCFRetainedAsCFNoAttr; 1420 - (NSDate*) alsoReturnsRetained; 1421 - (CFDateRef) alsoReturnsRetainedAsCF; 1422 - (NSDate*) returnsNSRetained NS_RETURNS_RETAINED; 1423 @end 1424 1425 CF_RETURNS_RETAINED 1426 CFDateRef returnsRetainedCFDate() { 1427 return CFDateCreate(0, CFAbsoluteTimeGetCurrent()); 1428 } 1429 1430 @implementation MyClassTestCFAttr 1431 - (NSDate*) returnsCFRetained { 1432 return (NSDate*) returnsRetainedCFDate(); // No leak. 1433 } 1434 1435 - (CFDateRef) returnsCFRetainedAsCF { 1436 return returnsRetainedCFDate(); // No leak. 1437 } 1438 1439 - (CFDateRef) newCFRetainedAsCF { 1440 return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; 1441 } 1442 1443 - (CFDateRef) newCFRetainedAsCFNoAttr { 1444 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}} 1445 } 1446 1447 - (NSDate*) alsoReturnsRetained { 1448 return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}} 1449 } 1450 1451 - (CFDateRef) alsoReturnsRetainedAsCF { 1452 return returnsRetainedCFDate(); // expected-warning{{leak}} 1453 } 1454 1455 1456 - (NSDate*) returnsNSRetained { 1457 return (NSDate*) returnsRetainedCFDate(); // no-warning 1458 } 1459 @end 1460 1461 //===----------------------------------------------------------------------===// 1462 // Test that leaks post-dominated by "panic" functions are not reported. 1463 // 1464 // <rdar://problem/5905851> do not report a leak when post-dominated by a call 1465 // to a noreturn or panic function 1466 //===----------------------------------------------------------------------===// 1467 1468 void panic() __attribute__((noreturn)); 1469 void panic_not_in_hardcoded_list() __attribute__((noreturn)); 1470 1471 void test_panic_negative() { 1472 signed z = 1; 1473 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1474 } 1475 1476 void test_panic_positive() { 1477 signed z = 1; 1478 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1479 panic(); 1480 } 1481 1482 void test_panic_neg_2(int x) { 1483 signed z = 1; 1484 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} 1485 if (x) 1486 panic(); 1487 } 1488 1489 void test_panic_pos_2(int x) { 1490 signed z = 1; 1491 CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning 1492 if (x) 1493 panic(); 1494 if (!x) { 1495 // This showed up in <rdar://problem/7796563>, where we silently missed checking 1496 // the function type for noreturn. "panic()" is a hard-coded known panic function 1497 // that isn't always noreturn. 1498 panic_not_in_hardcoded_list(); 1499 } 1500 } 1501 1502 //===----------------------------------------------------------------------===// 1503 // Test uses of blocks (closures) 1504 //===----------------------------------------------------------------------===// 1505 1506 void test_blocks_1_pos(void) { 1507 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} 1508 ^{}(); 1509 } 1510 1511 void test_blocks_1_indirect_release(void) { 1512 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1513 ^{ [number release]; }(); 1514 } 1515 1516 void test_blocks_1_indirect_retain(void) { 1517 // Eventually this should be reported as a leak. 1518 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1519 ^{ [number retain]; }(); 1520 } 1521 1522 void test_blocks_1_indirect_release_via_call(void) { 1523 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning 1524 ^(NSObject *o){ [o release]; }(number); 1525 } 1526 1527 void test_blocks_1_indirect_retain_via_call(void) { 1528 NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning {{leak}} 1529 ^(NSObject *o){ [o retain]; }(number); 1530 } 1531 1532 //===--------------------------------------------------------------------===// 1533 // Test sending message to super that returns an object alias. Previously 1534 // this caused a crash in the analyzer. 1535 //===--------------------------------------------------------------------===// 1536 1537 @interface Rdar8015556 : NSObject {} @end 1538 @implementation Rdar8015556 1539 - (id)retain { 1540 return [super retain]; 1541 } 1542 @end 1543 1544 // <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions 1545 // detector. 1546 1547 @protocol Prot_R8272168 @end 1548 Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168(); 1549 void r8272168() { 1550 GetAClassThatImplementsProt_R8272168(); 1551 } 1552 1553 // Test case for <rdar://problem/8356342>, which in the past triggered 1554 // a false positive. 1555 @interface RDar8356342 1556 - (NSDate*) rdar8356342:(NSDate *)inValue; 1557 @end 1558 1559 @implementation RDar8356342 1560 - (NSDate*) rdar8356342:(NSDate*)inValue { 1561 NSDate *outValue = inValue; 1562 if (outValue == 0) 1563 outValue = [[NSDate alloc] init]; // no-warning 1564 1565 if (outValue != inValue) 1566 [outValue autorelease]; 1567 1568 return outValue; 1569 } 1570 @end 1571 1572 // <rdar://problem/8724287> - This test case previously crashed because 1573 // of a bug in BugReporter. 1574 extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key); 1575 typedef struct __CFError * CFErrorRef; 1576 extern const CFStringRef kCFErrorUnderlyingErrorKey; 1577 extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err); 1578 static void rdar_8724287(CFErrorRef error) 1579 { 1580 CFErrorRef error_to_dump; 1581 1582 error_to_dump = error; 1583 while (error_to_dump != ((void*)0)) { 1584 CFDictionaryRef info; 1585 1586 info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object}} 1587 1588 if (info != ((void*)0)) { 1589 } 1590 1591 error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey); 1592 } 1593 } 1594 1595 // <rdar://problem/9234108> - Make sure the model applies cf_consumed 1596 // correctly in argument positions besides the first. 1597 extern void *CFStringCreate(void); 1598 extern void rdar_9234108_helper(void *key, void * CF_CONSUMED value); 1599 void rdar_9234108() { 1600 rdar_9234108_helper(0, CFStringCreate()); 1601 } 1602 1603 // <rdar://problem/9726279> - Make sure that objc_method_family works 1604 // to override naming conventions. 1605 struct TwoDoubles { 1606 double one; 1607 double two; 1608 }; 1609 typedef struct TwoDoubles TwoDoubles; 1610 1611 @interface NSValue (Mine) 1612 - (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles __attribute__((objc_method_family(init))); 1613 @end 1614 1615 @implementation NSValue (Mine) 1616 - (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles 1617 { 1618 return [self init]; 1619 } 1620 @end 1621 1622 void rdar9726279() { 1623 TwoDoubles twoDoubles = { 0.0, 0.0 }; 1624 NSValue *value = [[NSValue alloc] _prefix_initWithTwoDoubles:twoDoubles]; 1625 [value release]; 1626 } 1627 1628 // <rdar://problem/9732321> 1629 // Test camelcase support for CF conventions. While Core Foundation APIs 1630 // don't use camel casing, other code is allowed to use it. 1631 CFArrayRef camelcase_create_1() { 1632 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1633 } 1634 1635 CFArrayRef camelcase_createno() { 1636 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1637 } 1638 1639 CFArrayRef camelcase_copy() { 1640 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1641 } 1642 1643 CFArrayRef camelcase_copying() { 1644 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1645 } 1646 1647 CFArrayRef copyCamelCase() { 1648 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1649 } 1650 1651 CFArrayRef __copyCamelCase() { 1652 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1653 } 1654 1655 CFArrayRef __createCamelCase() { 1656 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1657 } 1658 1659 CFArrayRef camel_create() { 1660 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1661 } 1662 1663 1664 CFArrayRef camel_creat() { 1665 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1666 } 1667 1668 CFArrayRef camel_copy() { 1669 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1670 } 1671 1672 CFArrayRef camel_copyMachine() { 1673 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning 1674 } 1675 1676 CFArrayRef camel_copymachine() { 1677 return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} 1678 } 1679 1680 // rdar://problem/8024350 1681 @protocol F18P 1682 - (id) clone; 1683 @end 1684 @interface F18 : NSObject<F18P> @end 1685 @interface F18(Cat) 1686 - (id) clone NS_RETURNS_RETAINED; 1687 @end 1688 1689 @implementation F18 1690 - (id) clone { 1691 return [F18 alloc]; 1692 } 1693 @end 1694 1695 // Radar 6582778. 1696 void rdar6582778(void) { 1697 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1698 CFTypeRef vals[] = { CFDateCreate(0, t) }; // expected-warning {{leak}} 1699 } 1700 1701 CFTypeRef global; 1702 1703 void rdar6582778_2(void) { 1704 CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); 1705 global = CFDateCreate(0, t); // no-warning 1706 } 1707 1708 // <rdar://problem/10232019> - Test that objects passed to containers 1709 // are marked "escaped". 1710 1711 void rdar10232019() { 1712 NSMutableArray *array = [NSMutableArray array]; 1713 1714 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1715 [array addObject:string]; 1716 [string release]; 1717 1718 NSString *otherString = [string stringByAppendingString:@"bar"]; // no-warning 1719 NSLog(@"%@", otherString); 1720 } 1721 1722 void rdar10232019_positive() { 1723 NSMutableArray *array = [NSMutableArray array]; 1724 1725 NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; 1726 [string release]; 1727 1728 NSString *otherString = [string stringByAppendingString:@"bar"]; // expected-warning {{Reference-counted object is used after it is release}} 1729 NSLog(@"%@", otherString); 1730 } 1731 1732 // RetainCountChecker support for XPC. 1733 // <rdar://problem/9658496> 1734 typedef void * xpc_object_t; 1735 xpc_object_t _CFXPCCreateXPCObjectFromCFObject(CFTypeRef cf); 1736 void xpc_release(xpc_object_t object); 1737 1738 void rdar9658496() { 1739 CFStringRef cf; 1740 xpc_object_t xpc; 1741 cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1742 xpc = _CFXPCCreateXPCObjectFromCFObject( cf ); 1743 CFRelease(cf); 1744 xpc_release(xpc); 1745 } 1746 1747 // Support annotations with method families. 1748 @interface RDar10824732 : NSObject 1749 - (id)initWithObj:(id CF_CONSUMED)obj; 1750 @end 1751 1752 @implementation RDar10824732 1753 - (id)initWithObj:(id)obj { 1754 [obj release]; 1755 return [super init]; 1756 } 1757 @end 1758 1759 void rdar_10824732() { 1760 @autoreleasepool { 1761 NSString *obj = @"test"; 1762 RDar10824732 *foo = [[RDar10824732 alloc] initWithObj:obj]; // no-warning 1763 [foo release]; 1764 } 1765 } 1766 1767 // Stop tracking objects passed to functions, which take callbacks as parameters. 1768 // radar://10973977 1769 typedef int (*CloseCallback) (void *); 1770 void ReaderForIO(CloseCallback ioclose, void *ioctx); 1771 int IOClose(void *context); 1772 1773 @protocol SInS <NSObject> 1774 @end 1775 1776 @interface radar10973977 : NSObject 1777 - (id<SInS>)inputS; 1778 - (void)reader; 1779 @end 1780 1781 @implementation radar10973977 1782 - (void)reader 1783 { 1784 id<SInS> inputS = [[self inputS] retain]; 1785 ReaderForIO(IOClose, inputS); 1786 } 1787 - (id<SInS>)inputS 1788 { 1789 return 0; 1790 } 1791 @end 1792 1793 // Object escapes through a selector callback: radar://11398514 1794 extern id NSApp; 1795 @interface MySheetController 1796 - (id<SInS>)inputS; 1797 - (void)showDoSomethingSheetAction:(id)action; 1798 - (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo; 1799 @end 1800 1801 @implementation MySheetController 1802 - (id<SInS>)inputS { 1803 return 0; 1804 } 1805 - (void)showDoSomethingSheetAction:(id)action { 1806 id<SInS> inputS = [[self inputS] retain]; 1807 [NSApp beginSheet:0 1808 modalForWindow:0 1809 modalDelegate:0 1810 didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) 1811 contextInfo:(void *)inputS]; // no - warning 1812 } 1813 - (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo { 1814 1815 id contextObject = (id)contextInfo; 1816 [contextObject release]; 1817 } 1818 1819 - (id)copyAutoreleaseRadar13081402 { 1820 id x = [[[NSString alloc] initWithUTF8String:"foo"] autorelease]; 1821 [x retain]; 1822 return x; // no warning 1823 } 1824 1825 @end 1826 //===----------------------------------------------------------------------===// 1827 // Test returning allocated memory in a struct. 1828 // 1829 // We currently don't have a general way to track pointers that "escape". 1830 // Here we test that RetainCountChecker doesn't get excited about returning 1831 // allocated CF objects in struct fields. 1832 //===----------------------------------------------------------------------===// 1833 void *malloc(size_t); 1834 struct rdar11104566 { CFStringRef myStr; }; 1835 struct rdar11104566 test_rdar11104566() { 1836 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1837 struct rdar11104566 V; 1838 V.myStr = cf; 1839 return V; // no-warning 1840 } 1841 1842 struct rdar11104566 *test_2_rdar11104566() { 1843 CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning 1844 struct rdar11104566 *V = (struct rdar11104566 *) malloc(sizeof(*V)); 1845 V->myStr = cf; 1846 return V; // no-warning 1847 } 1848 1849 //===----------------------------------------------------------------------===// 1850 // ObjC literals support. 1851 //===----------------------------------------------------------------------===// 1852 1853 void test_objc_arrays() { 1854 { // CASE ONE -- OBJECT IN ARRAY CREATED DIRECTLY 1855 NSObject *o = [[NSObject alloc] init]; 1856 NSArray *a = [[NSArray alloc] initWithObjects:o, (void*)0]; // expected-warning {{leak}} 1857 [o release]; 1858 [a description]; 1859 [o description]; 1860 } 1861 1862 { // CASE TWO -- OBJECT IN ARRAY CREATED BY DUPING AUTORELEASED ARRAY 1863 NSObject *o = [[NSObject alloc] init]; 1864 NSArray *a1 = [NSArray arrayWithObjects:o, (void*)0]; 1865 NSArray *a2 = [[NSArray alloc] initWithArray:a1]; // expected-warning {{leak}} 1866 [o release]; 1867 [a2 description]; 1868 [o description]; 1869 } 1870 1871 { // CASE THREE -- OBJECT IN RETAINED @[] 1872 NSObject *o = [[NSObject alloc] init]; 1873 NSArray *a3 = [@[o] retain]; // expected-warning {{leak}} 1874 [o release]; 1875 [a3 description]; 1876 [o description]; 1877 } 1878 1879 { // CASE FOUR -- OBJECT IN ARRAY CREATED BY DUPING @[] 1880 NSObject *o = [[NSObject alloc] init]; 1881 NSArray *a = [[NSArray alloc] initWithArray:@[o]]; // expected-warning {{leak}} 1882 [o release]; 1883 1884 [a description]; 1885 [o description]; 1886 } 1887 1888 { // CASE FIVE -- OBJECT IN RETAINED @{} 1889 NSValue *o = [[NSValue alloc] init]; 1890 NSDictionary *a = [@{o : o} retain]; // expected-warning {{leak}} 1891 [o release]; 1892 1893 [a description]; 1894 [o description]; 1895 } 1896 } 1897 1898 void test_objc_integer_literals() { 1899 id value = [@1 retain]; // expected-warning {{leak}} 1900 [value description]; 1901 } 1902 1903 void test_objc_boxed_expressions(int x, const char *y) { 1904 id value = [@(x) retain]; // expected-warning {{leak}} 1905 [value description]; 1906 1907 value = [@(y) retain]; // expected-warning {{leak}} 1908 [value description]; 1909 } 1910 1911 // Test NSLog doesn't escape tracked objects. 1912 void rdar11400885(int y) 1913 { 1914 @autoreleasepool { 1915 NSString *printString; 1916 if(y > 2) 1917 printString = [[NSString alloc] init]; 1918 else 1919 printString = [[NSString alloc] init]; 1920 NSLog(@"Once %@", printString); 1921 [printString release]; 1922 NSLog(@"Again: %@", printString); // expected-warning {{Reference-counted object is used after it is released}} 1923 } 1924 } 1925 1926 id makeCollectableNonLeak() { 1927 extern CFTypeRef CFCreateSomething(); 1928 1929 CFTypeRef object = CFCreateSomething(); // +1 1930 CFRetain(object); // +2 1931 id objCObject = NSMakeCollectable(object); // +2 1932 [objCObject release]; // +1 1933 return [objCObject autorelease]; // +0 1934 } 1935 1936 1937 void consumeAndStopTracking(id NS_CONSUMED obj, void (^callback)(void)); 1938 void CFConsumeAndStopTracking(CFTypeRef CF_CONSUMED obj, void (^callback)(void)); 1939 1940 void testConsumeAndStopTracking() { 1941 id retained = [@[] retain]; // +1 1942 consumeAndStopTracking(retained, ^{}); // no-warning 1943 1944 id doubleRetained = [[@[] retain] retain]; // +2 1945 consumeAndStopTracking(doubleRetained, ^{ 1946 [doubleRetained release]; 1947 }); // no-warning 1948 1949 id unretained = @[]; // +0 1950 consumeAndStopTracking(unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 1951 } 1952 1953 void testCFConsumeAndStopTracking() { 1954 id retained = [@[] retain]; // +1 1955 CFConsumeAndStopTracking((CFTypeRef)retained, ^{}); // no-warning 1956 1957 id doubleRetained = [[@[] retain] retain]; // +2 1958 CFConsumeAndStopTracking((CFTypeRef)doubleRetained, ^{ 1959 [doubleRetained release]; 1960 }); // no-warning 1961 1962 id unretained = @[]; // +0 1963 CFConsumeAndStopTracking((CFTypeRef)unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 1964 } 1965 //===----------------------------------------------------------------------===// 1966 // Test 'pragma clang arc_cf_code_audited' support. 1967 //===----------------------------------------------------------------------===// 1968 1969 typedef void *MyCFType; 1970 #pragma clang arc_cf_code_audited begin 1971 MyCFType CreateMyCFType(); 1972 #pragma clang arc_cf_code_audited end 1973 1974 void test_custom_cf() { 1975 MyCFType x = CreateMyCFType(); // expected-warning {{leak of an object stored into 'x'}} 1976 } 1977 1978 //===----------------------------------------------------------------------===// 1979 // Test calling CFPlugInInstanceCreate, which appears in CF but doesn't 1980 // return a CF object. 1981 //===----------------------------------------------------------------------===// 1982 1983 void test_CFPlugInInstanceCreate(CFUUIDRef factoryUUID, CFUUIDRef typeUUID) { 1984 CFPlugInInstanceCreate(kCFAllocatorDefault, factoryUUID, typeUUID); // no-warning 1985 } 1986 1987 //===----------------------------------------------------------------------===// 1988 // PR14927: -drain only has retain-count semantics on NSAutoreleasePool. 1989 //===----------------------------------------------------------------------===// 1990 1991 @interface PR14927 : NSObject 1992 - (void)drain; 1993 @end 1994 1995 void test_drain() { 1996 PR14927 *obj = [[PR14927 alloc] init]; 1997 [obj drain]; 1998 [obj release]; // no-warning 1999 } 2000 2001 //===----------------------------------------------------------------------===// 2002 // Allow cf_returns_retained and cf_returns_not_retained to mark a return 2003 // value as tracked, even if the object isn't a known CF type. 2004 //===----------------------------------------------------------------------===// 2005 2006 MyCFType getCustom() __attribute__((cf_returns_not_retained)); 2007 MyCFType makeCustom() __attribute__((cf_returns_retained)); 2008 2009 void testCustomReturnsRetained() { 2010 MyCFType obj = makeCustom(); // expected-warning {{leak of an object stored into 'obj'}} 2011 } 2012 2013 void testCustomReturnsNotRetained() { 2014 CFRelease(getCustom()); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} 2015 } 2016 2017 //===----------------------------------------------------------------------===// 2018 // Don't print variables which are out of the current scope. 2019 //===----------------------------------------------------------------------===// 2020 @interface MyObj12706177 : NSObject 2021 -(id)initX; 2022 +(void)test12706177; 2023 @end 2024 static int Cond; 2025 @implementation MyObj12706177 2026 -(id)initX { 2027 if (Cond) 2028 return 0; 2029 self = [super init]; 2030 return self; 2031 } 2032 +(void)test12706177 { 2033 id x = [[MyObj12706177 alloc] initX]; //expected-warning {{Potential leak of an object}} 2034 [x release]; 2035 } 2036 @end 2037 2038 //===----------------------------------------------------------------------===// 2039 // <rdar://problem/13783514> xpc_connection_set_finalizer_f 2040 //===----------------------------------------------------------------------===// 2041 2042 typedef xpc_object_t xpc_connection_t; 2043 typedef void (*xpc_finalizer_t)(void *value); 2044 void xpc_connection_set_context(xpc_connection_t connection, void *ctx); 2045 void xpc_connection_set_finalizer_f(xpc_connection_t connection, 2046 xpc_finalizer_t finalizer); 2047 void releaseAfterXPC(void *context) { 2048 [(NSArray *)context release]; 2049 } 2050 2051 void rdar13783514(xpc_connection_t connection) { 2052 xpc_connection_set_context(connection, [[NSMutableArray alloc] init]); 2053 xpc_connection_set_finalizer_f(connection, releaseAfterXPC); 2054 } // no-warning 2055 2056 CFAttributedStringRef CFAttributedCreate(void *CFObj CF_CONSUMED) CF_RETURNS_RETAINED; 2057 2058 @interface Action 2059 - (SEL)action; 2060 - (void)setAction:(SEL)aSelector; 2061 - (id) target; 2062 - (void)setTarget:(id)aTarget; 2063 @end 2064
