test/Analysis/retain-release.mm

   1 // RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10 -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -fblocks -verify %s
   2
   3 #if __has_feature(attribute_ns_returns_retained)
   4 #define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))
   5 #endif
   6 #if __has_feature(attribute_cf_returns_retained)
   7 #define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
   8 #endif
   9 #if __has_feature(attribute_ns_returns_not_retained)
  10 #define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))
  11 #endif
  12 #if __has_feature(attribute_cf_returns_not_retained)
  13 #define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained))
  14 #endif
  15 #if __has_feature(attribute_ns_consumes_self)
  16 #define NS_CONSUMES_SELF __attribute__((ns_consumes_self))
  17 #endif
  18 #if __has_feature(attribute_ns_consumed)
  19 #define NS_CONSUMED __attribute__((ns_consumed))
  20 #endif
  21 #if __has_feature(attribute_cf_consumed)
  22 #define CF_CONSUMED __attribute__((cf_consumed))
  23 #endif
  24
  25 //===----------------------------------------------------------------------===//
  26 // The following code is reduced using delta-debugging from Mac OS X headers:
  27 //
  28 // #include <Cocoa/Cocoa.h>
  29 // #include <CoreFoundation/CoreFoundation.h>
  30 // #include <DiskArbitration/DiskArbitration.h>
  31 // #include <QuartzCore/QuartzCore.h>
  32 // #include <Quartz/Quartz.h>
  33 // #include <IOKit/IOKitLib.h>
  34 //
  35 // It includes the basic definitions for the test cases below.
  36 //===----------------------------------------------------------------------===//
  37
  38 typedef unsigned int __darwin_natural_t;
  39 typedef unsigned long uintptr_t;
  40 typedef unsigned int uint32_t;
  41 typedef unsigned long long uint64_t;
  42 typedef unsigned int UInt32;
  43 typedef signed long CFIndex;
  44 typedef struct {
  45     CFIndex location;
  46     CFIndex length;
  47 } CFRange;
  48 static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) {
  49     CFRange range;
  50     range.location = loc;
  51     range.length = len;
  52     return range;
  53 }
  54 typedef const void * CFTypeRef;
  55 typedef const struct __CFString * CFStringRef;
  56 typedef const struct __CFAllocator * CFAllocatorRef;
  57 extern const CFAllocatorRef kCFAllocatorDefault;
  58 extern CFTypeRef CFRetain(CFTypeRef cf);
  59 extern void CFRelease(CFTypeRef cf);
  60 typedef struct {
  61 }
  62 CFArrayCallBacks;
  63 extern const CFArrayCallBacks kCFTypeArrayCallBacks;
  64 typedef const struct __CFArray * CFArrayRef;
  65 typedef struct __CFArray * CFMutableArrayRef;
  66 extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
  67 void abort(void) __attribute__((noreturn));
  68 CFArrayRef CFArrayCreate(CFAllocatorRef allocator, const void **values, CFIndex numValues, const CFArrayCallBacks *callBacks);
  69 extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
  70 extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
  71 typedef struct {
  72 }
  73 CFDictionaryKeyCallBacks;
  74 extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks;
  75 typedef struct {
  76 }
  77 CFDictionaryValueCallBacks;
  78 extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks;
  79 typedef const struct __CFDictionary * CFDictionaryRef;
  80 typedef struct __CFDictionary * CFMutableDictionaryRef;
  81 extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks);
  82 typedef UInt32 CFStringEncoding;
  83 enum {
  84 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  };
  85 extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
  86 extern CFStringRef CFStringCreateCopy(CFAllocatorRef alloc, CFStringRef theString);
  87 typedef double CFTimeInterval;
  88 typedef CFTimeInterval CFAbsoluteTime;
  89 extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
  90 typedef const struct __CFDate * CFDateRef;
  91 extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
  92 extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
  93 typedef __darwin_natural_t natural_t;
  94 typedef natural_t mach_port_name_t;
  95 typedef mach_port_name_t mach_port_t;
  96 typedef int kern_return_t;
  97 typedef kern_return_t mach_error_t;
  98 enum {
  99 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    };
 100 typedef CFIndex CFNumberType;
 101 typedef const struct __CFNumber * CFNumberRef;
 102 extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
 103 typedef const struct __CFAttributedString *CFAttributedStringRef;
 104 typedef struct __CFAttributedString *CFMutableAttributedStringRef;
 105 extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ;
 106 extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ;
 107 extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ;
 108 typedef signed char BOOL;
 109 typedef unsigned long NSUInteger;
 110 @class NSString, Protocol;
 111 extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
 112 typedef struct _NSZone NSZone;
 113 @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
 114 @protocol NSObject
 115 - (BOOL)isEqual:(id)object;
 116 - (id)retain;
 117 - (id)copy;
 118 - (oneway void)release;
 119 - (id)autorelease;
 120 @end  @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone;
 121 @end  @protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone;
 122 @end  @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
 123 @end
 124 @interface NSObject <NSObject> {}
 125 + (id)allocWithZone:(NSZone *)zone;
 126 + (id)alloc;
 127 - (void)dealloc;
 128 - (id)init;
 129 @end
 130 @interface NSObject (NSCoderMethods)
 131 - (id)awakeAfterUsingCoder:(NSCoder *)aDecoder;
 132 @end
 133 extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
 134 typedef struct {
 135 }
 136 NSFastEnumerationState;
 137 @protocol NSFastEnumeration  - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
 138 @end           @class NSString, NSDictionary;
 139 @interface NSValue : NSObject <NSCopying, NSCoding>  - (void)getValue:(void *)value;
 140 @end  @interface NSNumber : NSValue  - (char)charValue;
 141 - (id)initWithInt:(int)value;
 142 @end   @class NSString;
 143 @interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
 144 @end  @interface NSArray (NSArrayCreation)  + (id)array;
 145 @end       @interface NSAutoreleasePool : NSObject {
 146 }
 147 - (void)drain;
 148 @end extern NSString * const NSBundleDidLoadNotification;
 149 typedef double NSTimeInterval;
 150 @interface NSDate : NSObject <NSCopying, NSCoding>  - (NSTimeInterval)timeIntervalSinceReferenceDate;
 151 @end            typedef unsigned short unichar;
 152 @interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>    - (NSUInteger)length;
 153 - ( const char *)UTF8String;
 154 - (id)initWithUTF8String:(const char *)nullTerminatedCString;
 155 + (id)stringWithUTF8String:(const char *)nullTerminatedCString;
 156 @end        @class NSString, NSURL, NSError;
 157 @interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding>  - (NSUInteger)length;
 158 + (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
 159 + (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
 160 @end   @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary;
 161 @interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
 162 @end    @interface NSMutableDictionary : NSDictionary  - (void)removeObjectForKey:(id)aKey;
 163 - (void)setObject:(id)anObject forKey:(id)aKey;
 164 @end  @interface NSMutableDictionary (NSMutableDictionaryCreation)  + (id)dictionaryWithCapacity:(NSUInteger)numItems;
 165 @end  typedef double CGFloat;
 166 struct CGSize {
 167 };
 168 typedef struct CGSize CGSize;
 169 struct CGRect {
 170 };
 171 typedef struct CGRect CGRect;
 172 typedef mach_port_t io_object_t;
 173 typedef char io_name_t[128];
 174 typedef io_object_t io_iterator_t;
 175 typedef io_object_t io_service_t;
 176 typedef struct IONotificationPort * IONotificationPortRef;
 177 typedef void (*IOServiceMatchingCallback)(  void * refcon,  io_iterator_t iterator );
 178 io_service_t IOServiceGetMatchingService(  mach_port_t masterPort,  CFDictionaryRef matching );
 179 kern_return_t IOServiceGetMatchingServices(  mach_port_t masterPort,  CFDictionaryRef matching,  io_iterator_t * existing );
 180 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));
 181 kern_return_t IOServiceAddMatchingNotification(  IONotificationPortRef notifyPort,  const io_name_t notificationType,  CFDictionaryRef matching,         IOServiceMatchingCallback callback,         void * refCon,  io_iterator_t * notification );
 182 CFMutableDictionaryRef IOServiceMatching(  const char * name );
 183 CFMutableDictionaryRef IOServiceNameMatching(  const char * name );
 184 CFMutableDictionaryRef IOBSDNameMatching(  mach_port_t masterPort,  uint32_t options,  const char * bsdName );
 185 CFMutableDictionaryRef IOOpenFirmwarePathMatching(  mach_port_t masterPort,  uint32_t options,  const char * path );
 186 CFMutableDictionaryRef IORegistryEntryIDMatching(  uint64_t entryID );
 187 typedef struct __DASession * DASessionRef;
 188 extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
 189 typedef struct __DADisk * DADiskRef;
 190 extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
 191 extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
 192 extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
 193 extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
 194 @interface NSTask : NSObject - (id)init;
 195 @end                    typedef struct CGColorSpace *CGColorSpaceRef;
 196 typedef struct CGImage *CGImageRef;
 197 typedef struct CGLayer *CGLayerRef;
 198 @interface NSResponder : NSObject <NSCoding> {
 199 }
 200 @end    @protocol NSAnimatablePropertyContainer      - (id)animator;
 201 @end  extern NSString *NSAnimationTriggerOrderIn ;
 202 @interface NSView : NSResponder  <NSAnimatablePropertyContainer>  {
 203 }
 204 @end @protocol NSValidatedUserInterfaceItem - (SEL)action;
 205 @end   @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem;
 206 @end  @class NSDate, NSDictionary, NSError, NSException, NSNotification;
 207 @interface NSApplication : NSResponder <NSUserInterfaceValidations> {
 208 }
 209 @end   enum {
 210 NSTerminateCancel = 0,         NSTerminateNow = 1,         NSTerminateLater = 2 };
 211 typedef NSUInteger NSApplicationTerminateReply;
 212 @protocol NSApplicationDelegate <NSObject> @optional        - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
 213 @end  @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView;
 214 @interface NSCell : NSObject <NSCopying, NSCoding> {
 215 }
 216 @end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError;
 217 typedef struct {
 218 }
 219 CVTimeStamp;
 220 @interface CIImage : NSObject <NSCoding, NSCopying> {
 221 }
 222 typedef int CIFormat;
 223 @end  enum {
 224 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 };
 225 typedef mach_error_t DAReturn;
 226 typedef const struct __DADissenter * DADissenterRef;
 227 extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
 228 @interface CIContext: NSObject {
 229 }
 230 - (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r;
 231 - (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r     format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs;
 232 - (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d;
 233 @end extern NSString* const QCRendererEventKey;
 234 @protocol QCCompositionRenderer - (NSDictionary*) attributes;
 235 @end   @interface QCRenderer : NSObject <QCCompositionRenderer> {
 236 }
 237 - (id) createSnapshotImageOfType:(NSString*)type;
 238 @end  extern NSString* const QCViewDidStartRenderingNotification;
 239 @interface QCView : NSView <QCCompositionRenderer> {
 240 }
 241 - (id) createSnapshotImageOfType:(NSString*)type;
 242 @end    enum {
 243 ICEXIFOrientation1 = 1,     ICEXIFOrientation2 = 2,     ICEXIFOrientation3 = 3,     ICEXIFOrientation4 = 4,     ICEXIFOrientation5 = 5,     ICEXIFOrientation6 = 6,     ICEXIFOrientation7 = 7,     ICEXIFOrientation8 = 8, };
 244 @class ICDevice;
 245 @protocol ICDeviceDelegate <NSObject>  @required      - (void)didRemoveDevice:(ICDevice*)device;
 246 @end extern NSString *const ICScannerStatusWarmingUp;
 247 @class ICScannerDevice;
 248 @protocol ICScannerDeviceDelegate <ICDeviceDelegate>  @optional       - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
 249 @end
 250
 251 typedef long unsigned int __darwin_size_t;
 252 typedef __darwin_size_t size_t;
 253 typedef unsigned long CFTypeID;
 254 struct CGPoint {
 255   CGFloat x;
 256   CGFloat y;
 257 };
 258 typedef struct CGPoint CGPoint;
 259 typedef struct CGGradient *CGGradientRef;
 260 typedef uint32_t CGGradientDrawingOptions;
 261 extern CFTypeID CGGradientGetTypeID(void);
 262 extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef
 263   space, const CGFloat components[], const CGFloat locations[], size_t count);
 264 extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space,
 265   CFArrayRef colors, const CGFloat locations[]);
 266 extern CGGradientRef CGGradientRetain(CGGradientRef gradient);
 267 extern void CGGradientRelease(CGGradientRef gradient);
 268 typedef struct CGContext *CGContextRef;
 269 extern void CGContextDrawLinearGradient(CGContextRef context,
 270     CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint,
 271     CGGradientDrawingOptions options);
 272 extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void);
 273 //===----------------------------------------------------------------------===//
 274 // Test cases.
 275 //===----------------------------------------------------------------------===//
 276
 277 class SmartPointer {
 278   id x;
 279 public:
 280   SmartPointer(id x) : x(x) {}
 281   ~SmartPointer() { [x release]; }
 282
 283   void adopt(id x);
 284   void noAdopt(id x);
 285 };
 286
 287 void test_positive() {
 288   id x = [[NSObject alloc] init]; // expected-warning {{leak}}
 289 }
 290
 291 void test_smartpointer_1() {
 292   id x = [[NSObject alloc] init];  // no-warning
 293   SmartPointer foo(x);
 294 }
 295
 296 void test_smartpointer_2() {
 297   id x = [[NSObject alloc] init];  // no-warning
 298   SmartPointer foo(0);
 299   foo.adopt(x);
 300 }
 301
 302 // FIXME: Eventually we want annotations to say whether or not
 303 // a C++ method claims ownership of an Objective-C object.
 304 void test_smartpointer_3() {
 305   id x = [[NSObject alloc] init];  // no-warning
 306   SmartPointer foo(0);
 307   foo.noAdopt(x);
 308 }
 309
 310 void test_smartpointer_4() {
 311   id x = [[NSObject alloc] init];  // no-warning
 312   SmartPointer *foo = new SmartPointer(x);
 313   delete foo;
 314 }
 315
 316 extern CFStringRef ElectronMicroscopyEngage(void);
 317 void test_microscopy() {
 318   NSString *token = (NSString*) ElectronMicroscopyEngage();
 319   [token release]; // expected-warning {{object that is not owned}}
 320 }
 321
 322 extern CFStringRef Scopy(void);
 323 void test_Scopy() {
 324   NSString *token = (NSString*) Scopy();
 325   [token release]; // expected-warning {{object that is not owned}}
 326 }
 327
 328 //===----------------------------------------------------------------------===//
 329 // Test handling of template functions used to do magic with
 330 // tracked retained pointers.
 331 //===----------------------------------------------------------------------===//
 332
 333 template <typename T, typename U> T static_objc_cast(U* value)
 334 {
 335   // ...debugging code omitted...
 336   return static_cast<T>(value);
 337 }
 338
 339 int rdar10553686(void)
 340 {
 341   NSObject* bar = static_objc_cast<NSObject*>([[NSObject alloc] init]);
 342   [bar release];
 343   return 0;
 344 }
 345 int rdar10553686_positive(void)
 346 {
 347   NSObject* bar = static_objc_cast<NSObject*>([[NSObject alloc] init]);
 348   [bar release];
 349   [bar retain]; // expected-warning {{used after it is released}}
 350   return 0;
 351 }
 352
 353 @interface NSMapTable : NSObject <NSCopying, NSCoding, NSFastEnumeration>
 354 @end
 355 extern void *NSMapGet(NSMapTable *table, const void *key);
 356 extern void NSMapInsert(NSMapTable *table, const void *key, const void *value);
 357 extern void NSMapInsertKnownAbsent(NSMapTable *table, const void *key, const void *value);
 358 char *strdup(const char *s);
 359
 360 NSString * radar11152419(NSString *string1, NSString *key1, NSMapTable *map) {
 361     NSString *string = ( NSString *)NSMapGet(map, key1);
 362     if (!string) {
 363         string = [string1 copy];
 364         NSString *key = [key1 copy];
 365         NSMapInsert(map, (void*) key, (void*)string); // no warning
 366         NSMapInsertKnownAbsent(map, (void*)key, (void*)string); // no warning
 367     }
 368     return string;
 369 }
 370
 371 //===----------------------------------------------------------------------===//
 372 // Don't crash on non-member functions with "callbacks" but without names.
 373 //===----------------------------------------------------------------------===//
 374
 375 struct IntWrapper {
 376   int arg;
 377 };
 378
 379 int operator>> (const IntWrapper &W, int (*f)(int)) {
 380   return f(W.arg);
 381 }
 382
 383 void testCallback() {
 384   IntWrapper val = { 42 };
 385
 386   extern int process(int);
 387   val >> process;
 388 }
 389
 390 //===----------------------------------------------------------------------===//
 391 // Test handling static initializers.
 392 //===----------------------------------------------------------------------===//
 393
 394 @interface radar13227740 : NSObject
 395 @end
 396
 397 @implementation radar13227740
 398 - (CFArrayRef)test {
 399     static CFArrayRef array = ::CFArrayCreate(0, 0, 0, 0);
 400     do { if (!((0 != array)/1)) { abort(); } } while (false);
 401     return array;
 402 }
 403
 404 // Previously this reported a bogus leak.
 405 - (void)test2 {
 406     (void)[self test];
 407     (void)[self test];
 408 }
 409 @end
 410
 411 //===----------------------------------------------------------------------===//
 412 // Don't crash on getting a null expression from CallEnter corresponding to a
 413 // destructor.
 414 //===----------------------------------------------------------------------===//
 415
 416 template <typename X>
 417 class Holder {
 418 public:
 419         Holder() throw();
 420         ~Holder() throw() {}
 421         X* get() const throw();
 422         void reset(X* p) throw();
 423 private:
 424         X* ptr_;
 425 };
 426
 427 template<typename X>
 428 inline
 429 Holder<X>::Holder() throw()
 430 : ptr_(0){}
 431
 432 template <typename X>
 433 inline
 434 X* Holder<X>::get() const throw() {
 435         return ptr_;
 436 }
 437
 438 template <typename X>
 439 inline
 440 void Holder<X>::reset(X* p) throw() {
 441         if (ptr_ != p) {
 442                 if (ptr_ != 0) {
 443                         ::CFRelease( ptr_ );
 444                 }
 445                 ptr_ = p;
 446         }
 447 }
 448
 449 class radar13722286 {
 450 public:
 451   radar13722286() {}
 452 private:
 453         void                    PrepareBitmap();
 454         Holder<const struct __CFString> mStr;
 455 };
 456
 457 void    radar13722286::PrepareBitmap() {
 458         if (mStr.get() != 0) {
 459                 Holder<const struct __CFString> str1;
 460                 mStr.reset( CFStringCreateCopy( 0, str1.get() ) ); //expected-warning {{Potential leak of an object}}
 461         }
 462 }
 463
 464 // rdar://34210609
 465 void _() { _(); }; // no-warning
 466
 467 // Do not assume that IOBSDNameMatching increments a reference counter,
 468 // unless return type is CFMutableDictionaryRef.
 469 void* IOBSDNameMatching();
 470 void rdar33832412() {
 471   void* x = IOBSDNameMatching(); // no-warning
 472 }
 473
 474
 475 namespace member_CFRetains {
 476 class Foo {
 477 public:
 478   void CFRetain(const Foo &) {}
 479   void CFRetain(int) {}
 480 };
 481
 482 void bar() {
 483   Foo foo;
 484   foo.CFRetain(foo); // no-warning
 485   foo.CFRetain(0); // no-warning
 486 }
 487 }