retain-release.m revision 38cc6bca5c172e2888c86fb0bef6883db0692cf6 
1// RUN: clang-cc -triple x86_64-apple-darwin10 -analyze -checker-cfref -analyzer-store=basic -fblocks -verify %s
2// RUN: clang-cc -triple x86_64-apple-darwin10 -analyze -checker-cfref -analyzer-store=region -fblocks -verify %s
3
4#if __has_feature(attribute_ns_returns_retained)
5#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))
6#endif
7#if __has_feature(attribute_cf_returns_retained)
8#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
9#endif
10
11//===----------------------------------------------------------------------===//
12// The following code is reduced using delta-debugging from Mac OS X headers:
13//
14// #include <Cocoa/Cocoa.h>
15// #include <CoreFoundation/CoreFoundation.h>
16// #include <DiskArbitration/DiskArbitration.h>
17// #include <QuartzCore/QuartzCore.h>
18// #include <Quartz/Quartz.h>
19// #include <IOKit/IOKitLib.h>
20//
21// It includes the basic definitions for the test cases below.
22//===----------------------------------------------------------------------===//
23
24typedef unsigned int __darwin_natural_t;
25typedef unsigned long uintptr_t;
26typedef unsigned int uint32_t;
27typedef unsigned long long uint64_t;
28typedef unsigned int UInt32;
29typedef signed long CFIndex;
30typedef struct {
31    CFIndex location;
32    CFIndex length;
33} CFRange;
34static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) {
35    CFRange range;
36    range.location = loc;
37    range.length = len;
38    return range;
39}
40typedef const void * CFTypeRef;
41typedef const struct __CFString * CFStringRef;
42typedef const struct __CFAllocator * CFAllocatorRef;
43extern const CFAllocatorRef kCFAllocatorDefault;
44extern CFTypeRef CFRetain(CFTypeRef cf);
45extern void CFRelease(CFTypeRef cf);
46typedef struct {
47}
48CFArrayCallBacks;
49extern const CFArrayCallBacks kCFTypeArrayCallBacks;
50typedef const struct __CFArray * CFArrayRef;
51typedef struct __CFArray * CFMutableArrayRef;
52extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
53extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
54extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
55typedef struct {
56}
57CFDictionaryKeyCallBacks;
58extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks;
59typedef struct {
60}
61CFDictionaryValueCallBacks;
62extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks;
63typedef const struct __CFDictionary * CFDictionaryRef;
64typedef struct __CFDictionary * CFMutableDictionaryRef;
65extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks);
66typedef UInt32 CFStringEncoding;
67enum {
68kCFStringEncodingMacRoman = 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  };
69extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
70typedef double CFTimeInterval;
71typedef CFTimeInterval CFAbsoluteTime;
72extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
73typedef const struct __CFDate * CFDateRef;
74extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
75extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
76typedef __darwin_natural_t natural_t;
77typedef natural_t mach_port_name_t;
78typedef mach_port_name_t mach_port_t;
79typedef int kern_return_t;
80typedef kern_return_t mach_error_t;
81enum {
82kCFNumberSInt8Type = 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    };
83typedef CFIndex CFNumberType;
84typedef const struct __CFNumber * CFNumberRef;
85extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
86typedef const struct __CFAttributedString *CFAttributedStringRef;
87typedef struct __CFAttributedString *CFMutableAttributedStringRef;
88extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ;
89extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ;
90extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ;
91typedef signed char BOOL;
92typedef unsigned long NSUInteger;
93@class NSString, Protocol;
94extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
95typedef struct _NSZone NSZone;
96@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
97@protocol NSObject
98- (BOOL)isEqual:(id)object;
99- (id)retain;
100- (oneway void)release;
101- (id)autorelease;
102@end  @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone;
103@end  @protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone;
104@end  @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
105@end
106@interface NSObject <NSObject> {}
107+ (id)allocWithZone:(NSZone *)zone;
108+ (id)alloc;
109- (void)dealloc;
110@end
111@interface NSObject (NSCoderMethods)
112- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder;
113@end
114extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
115typedef struct {
116}
117NSFastEnumerationState;
118@protocol NSFastEnumeration  - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
119@end           @class NSString, NSDictionary;
120@interface NSValue : NSObject <NSCopying, NSCoding>  - (void)getValue:(void *)value;
121@end  @interface NSNumber : NSValue  - (char)charValue;
122- (id)initWithInt:(int)value;
123@end   @class NSString;
124@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
125@end  @interface NSArray (NSArrayCreation)  + (id)array;
126@end       @interface NSAutoreleasePool : NSObject {
127}
128- (void)drain;
129@end extern NSString * const NSBundleDidLoadNotification;
130typedef double NSTimeInterval;
131@interface NSDate : NSObject <NSCopying, NSCoding>  - (NSTimeInterval)timeIntervalSinceReferenceDate;
132@end            typedef unsigned short unichar;
133@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>    - (NSUInteger)length;
134- ( const char *)UTF8String;
135- (id)initWithUTF8String:(const char *)nullTerminatedCString;
136+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
137@end        @class NSString, NSURL, NSError;
138@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding>  - (NSUInteger)length;
139+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
140+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
141@end   @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary;
142@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
143@end    @interface NSMutableDictionary : NSDictionary  - (void)removeObjectForKey:(id)aKey;
144- (void)setObject:(id)anObject forKey:(id)aKey;
145@end  @interface NSMutableDictionary (NSMutableDictionaryCreation)  + (id)dictionaryWithCapacity:(NSUInteger)numItems;
146@end  typedef double CGFloat;
147struct CGSize {
148};
149typedef struct CGSize CGSize;
150struct CGRect {
151};
152typedef struct CGRect CGRect;
153typedef mach_port_t io_object_t;
154typedef char io_name_t[128];
155typedef io_object_t io_iterator_t;
156typedef io_object_t io_service_t;
157typedef struct IONotificationPort * IONotificationPortRef;
158typedef void (*IOServiceMatchingCallback)(  void * refcon,  io_iterator_t iterator );
159io_service_t IOServiceGetMatchingService(  mach_port_t masterPort,  CFDictionaryRef matching );
160kern_return_t IOServiceGetMatchingServices(  mach_port_t masterPort,  CFDictionaryRef matching,  io_iterator_t * existing );
161kern_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));
162kern_return_t IOServiceAddMatchingNotification(  IONotificationPortRef notifyPort,  const io_name_t notificationType,  CFDictionaryRef matching,         IOServiceMatchingCallback callback,         void * refCon,  io_iterator_t * notification );
163CFMutableDictionaryRef IOServiceMatching(  const char * name );
164CFMutableDictionaryRef IOServiceNameMatching(  const char * name );
165CFMutableDictionaryRef IOBSDNameMatching(  mach_port_t masterPort,  uint32_t options,  const char * bsdName );
166CFMutableDictionaryRef IOOpenFirmwarePathMatching(  mach_port_t masterPort,  uint32_t options,  const char * path );
167CFMutableDictionaryRef IORegistryEntryIDMatching(  uint64_t entryID );
168typedef struct __DASession * DASessionRef;
169extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
170typedef struct __DADisk * DADiskRef;
171extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
172extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
173extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
174extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
175@interface NSTask : NSObject - (id)init;
176@end                    typedef struct CGColorSpace *CGColorSpaceRef;
177typedef struct CGImage *CGImageRef;
178typedef struct CGLayer *CGLayerRef;
179@interface NSResponder : NSObject <NSCoding> {
180}
181@end    @protocol NSAnimatablePropertyContainer      - (id)animator;
182@end  extern NSString *NSAnimationTriggerOrderIn ;
183@interface NSView : NSResponder  <NSAnimatablePropertyContainer>  {
184}
185@end @protocol NSValidatedUserInterfaceItem - (SEL)action;
186@end   @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem;
187@end  @class NSDate, NSDictionary, NSError, NSException, NSNotification;
188@interface NSApplication : NSResponder <NSUserInterfaceValidations> {
189}
190@end   enum {
191NSTerminateCancel = 0,         NSTerminateNow = 1,         NSTerminateLater = 2 };
192typedef NSUInteger NSApplicationTerminateReply;
193@protocol NSApplicationDelegate <NSObject> @optional        - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
194@end  @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView;
195@interface NSCell : NSObject <NSCopying, NSCoding> {
196}
197@end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError;
198typedef struct {
199}
200CVTimeStamp;
201@interface CIImage : NSObject <NSCoding, NSCopying> {
202}
203typedef int CIFormat;
204@end  enum {
205kDAReturnSuccess = 0,     kDAReturnError = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x01,     kDAReturnBusy = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x02,     kDAReturnBadArgument = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x03,     kDAReturnExclusiveAccess = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x04,     kDAReturnNoResources = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x05,     kDAReturnNotFound = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x06,     kDAReturnNotMounted = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x07,     kDAReturnNotPermitted = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x08,     kDAReturnNotPrivileged = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x09,     kDAReturnNotReady = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0A,     kDAReturnNotWritable = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0B,     kDAReturnUnsupported = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0C };
206typedef mach_error_t DAReturn;
207typedef const struct __DADissenter * DADissenterRef;
208extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
209@interface CIContext: NSObject {
210}
211- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r;
212- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r     format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs;
213- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d;
214@end extern NSString* const QCRendererEventKey;
215@protocol QCCompositionRenderer - (NSDictionary*) attributes;
216@end   @interface QCRenderer : NSObject <QCCompositionRenderer> {
217}
218- (id) createSnapshotImageOfType:(NSString*)type;
219@end  extern NSString* const QCViewDidStartRenderingNotification;
220@interface QCView : NSView <QCCompositionRenderer> {
221}
222- (id) createSnapshotImageOfType:(NSString*)type;
223@end    enum {
224ICEXIFOrientation1 = 1,     ICEXIFOrientation2 = 2,     ICEXIFOrientation3 = 3,     ICEXIFOrientation4 = 4,     ICEXIFOrientation5 = 5,     ICEXIFOrientation6 = 6,     ICEXIFOrientation7 = 7,     ICEXIFOrientation8 = 8, };
225@class ICDevice;
226@protocol ICDeviceDelegate <NSObject>  @required      - (void)didRemoveDevice:(ICDevice*)device;
227@end extern NSString *const ICScannerStatusWarmingUp;
228@class ICScannerDevice;
229@protocol ICScannerDeviceDelegate <ICDeviceDelegate>  @optional       - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
230@end
231
232typedef long unsigned int __darwin_size_t;
233typedef __darwin_size_t size_t;
234typedef unsigned long CFTypeID;
235struct CGPoint {
236  CGFloat x;
237  CGFloat y;
238};
239typedef struct CGPoint CGPoint;
240typedef struct CGGradient *CGGradientRef;
241typedef uint32_t CGGradientDrawingOptions;
242extern CFTypeID CGGradientGetTypeID(void);
243extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef
244  space, const CGFloat components[], const CGFloat locations[], size_t count);
245extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space,
246  CFArrayRef colors, const CGFloat locations[]);
247extern CGGradientRef CGGradientRetain(CGGradientRef gradient);
248extern void CGGradientRelease(CGGradientRef gradient);
249typedef struct CGContext *CGContextRef;
250extern void CGContextDrawLinearGradient(CGContextRef context,
251    CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint,
252    CGGradientDrawingOptions options);
253extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void);
254
255//===----------------------------------------------------------------------===//
256// Test cases.
257//===----------------------------------------------------------------------===//
258
259CFAbsoluteTime f1() {
260  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
261  CFDateRef date = CFDateCreate(0, t);
262  CFRetain(date);
263  CFRelease(date);
264  CFDateGetAbsoluteTime(date); // no-warning
265  CFRelease(date);
266  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released.}}
267  return t;
268}
269
270CFAbsoluteTime f2() {
271  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
272  CFDateRef date = CFDateCreate(0, t);  
273  [((NSDate*) date) retain];
274  CFRelease(date);
275  CFDateGetAbsoluteTime(date); // no-warning
276  [((NSDate*) date) release];
277  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released.}}
278  return t;
279}
280
281
282NSDate* global_x;
283
284// Test to see if we supresss an error when we store the pointer
285// to a global.
286
287CFAbsoluteTime f3() {
288  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
289  CFDateRef date = CFDateCreate(0, t);  
290  [((NSDate*) date) retain];
291  CFRelease(date);
292  CFDateGetAbsoluteTime(date); // no-warning
293  global_x = (NSDate*) date;  
294  [((NSDate*) date) release];
295  t = CFDateGetAbsoluteTime(date);   // no-warning
296  return t;
297}
298
299//---------------------------------------------------------------------------
300// Test case 'f4' differs for region store and basic store.  See
301// retain-release-region-store.m and retain-release-basic-store.m.
302//---------------------------------------------------------------------------
303
304// Test a leak.
305
306CFAbsoluteTime f5(int x) {  
307  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
308  CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}}
309  
310  if (x)
311    CFRelease(date);
312  
313  return t;
314}
315
316// Test a leak involving the return.
317
318CFDateRef f6(int x) {  
319  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  // expected-warning{{leak}}
320  CFRetain(date);
321  return date;
322}
323
324// Test a leak involving an overwrite.
325
326CFDateRef f7() {
327  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  //expected-warning{{leak}}
328  CFRetain(date);
329  date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
330  return date;
331}
332
333// Generalization of Create rule.  MyDateCreate returns a CFXXXTypeRef, and
334// has the word create.
335CFDateRef MyDateCreate();
336
337CFDateRef f8() {
338  CFDateRef date = MyDateCreate(); // expected-warning{{leak}}
339  CFRetain(date);  
340  return date;
341}
342
343CFDateRef f9() {
344  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
345  int *p = 0;
346  // When allocations fail, CFDateCreate can return null.
347  if (!date) *p = 1; // expected-warning{{null}}
348  return date;
349}
350
351// Handle DiskArbitration API:
352//
353// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
354//
355void f10(io_service_t media, DADiskRef d, CFStringRef s) {
356  DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}}
357  if (disk) NSLog(@"ok");
358  
359  disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}}
360  if (disk) NSLog(@"ok");
361
362  CFDictionaryRef dict = DADiskCopyDescription(d);  // expected-warning{{leak}}
363  if (dict) NSLog(@"ok"); 
364  
365  disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}}
366  if (disk) NSLog(@"ok");
367    
368  DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault,   // expected-warning{{leak}}
369                                                kDAReturnSuccess, s);
370  if (dissenter) NSLog(@"ok");
371  
372  DASessionRef session = DASessionCreate(kCFAllocatorDefault);  // expected-warning{{leak}}
373  if (session) NSLog(@"ok");
374}
375
376// Test retain/release checker with CFString and CFMutableArray.
377void f11() {
378  // Create the array.
379  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
380
381  // Create a string.
382  CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
383                                             kCFStringEncodingUTF8);
384
385  // Add the string to the array.
386  CFArrayAppendValue(A, s1);
387  
388  // Decrement the reference count.
389  CFRelease(s1); // no-warning
390  
391  // Get the string.  We don't own it.
392  s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
393  
394  // Release the array.
395  CFRelease(A); // no-warning
396  
397  // Release the string.  This is a bug.
398  CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
399}
400
401// PR 3337: Handle functions declared using typedefs.
402typedef CFTypeRef CREATEFUN();
403CREATEFUN MyCreateFun;
404
405void f12() {
406  CFTypeRef o = MyCreateFun(); // expected-warning {{leak}}
407}
408
409void f13_autorelease() {
410  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
411  [(id) A autorelease]; // no-warning
412}
413
414void f13_autorelease_b() {
415  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
416  [(id) A autorelease];
417  [(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}}
418}
419
420CFMutableArrayRef f13_autorelease_c() {
421  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
422  [(id) A autorelease];
423  [(id) A autorelease]; 
424  return A; // expected-warning{{Object sent -autorelease too many times}}
425}
426
427CFMutableArrayRef f13_autorelease_d() {
428  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
429  [(id) A autorelease];
430  [(id) A autorelease]; 
431  CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}}
432  CFRelease(B); // no-warning
433  while (1) {}
434}
435
436
437// This case exercises the logic where the leak site is the same as the allocation site.
438void f14_leakimmediately() {
439  CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}}
440}
441
442// Test that we track an allocated object beyond the point where the *name*
443// of the variable storing the reference is no longer live.
444void f15() {
445  // Create the array.
446  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
447  CFMutableArrayRef *B = &A;
448  // At this point, the name 'A' is no longer live.
449  CFRelease(*B);  // no-warning
450}
451
452// Test when we pass NULL to CFRetain/CFRelease.
453void f16(int x, CFTypeRef p) {
454  if (p)
455    return;
456
457  if (x) {
458    CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}}
459  }
460  else {
461    CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}}
462  }
463}
464
465// Test basic tracking of ivars associated with 'self'.  For the retain/release
466// checker we currently do not want to flag leaks associated with stores
467// of tracked objects to ivars.
468@interface SelfIvarTest : NSObject {
469  id myObj;
470}
471- (void)test_self_tracking;
472@end
473
474@implementation SelfIvarTest
475- (void)test_self_tracking {
476  myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
477}
478@end
479
480// Test return of non-owned objects in contexts where an owned object
481// is expected.
482@interface TestReturnNotOwnedWhenExpectedOwned
483- (NSString*)newString;
484@end
485
486@implementation TestReturnNotOwnedWhenExpectedOwned
487- (NSString*)newString {
488  NSString *s = [NSString stringWithUTF8String:"hello"];
489  return s; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
490}
491@end
492
493// <rdar://problem/6659160>
494int isFoo(char c);
495
496static void rdar_6659160(char *inkind, char *inname)
497{
498  // We currently expect that [NSObject alloc] cannot fail.  This
499  // will be a toggled flag in the future.  It can indeed return null, but
500  // Cocoa programmers generally aren't expected to reason about out-of-memory
501  // conditions.
502  NSString *kind = [[NSString alloc] initWithUTF8String:inkind];  // expected-warning{{leak}}
503  
504  // We do allow stringWithUTF8String to fail.  This isn't really correct, as
505  // far as returning 0.  In most error conditions it will throw an exception.
506  // If allocation fails it could return 0, but again this
507  // isn't expected.
508  NSString *name = [NSString stringWithUTF8String:inname];
509  if(!name)
510    return;
511
512  const char *kindC = 0;
513  const char *nameC = 0;
514  
515  // In both cases, we cannot reach a point down below where we
516  // dereference kindC or nameC with either being null.  This is because
517  // we assume that [NSObject alloc] doesn't fail and that we have the guard
518  // up above.
519  
520  if(kind)
521    kindC = [kind UTF8String];
522  if(name)
523    nameC = [name UTF8String];
524  if(!isFoo(kindC[0])) // expected-warning{{null}}
525    return;
526  if(!isFoo(nameC[0])) // no-warning
527    return;
528
529  [kind release];
530  [name release]; // expected-warning{{Incorrect decrement of the reference count}}
531}
532
533// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming
534//  conventions with respect to 'return'ing ownership.
535@interface PR3677: NSObject @end
536@implementation PR3677
537+ (id)allocWithZone:(NSZone *)inZone {
538  return [super allocWithZone:inZone];  // no-warning
539}
540@end
541
542// PR 3820 - Reason about calls to -dealloc
543void pr3820_DeallocInsteadOfRelease(void)
544{
545  id foo = [[NSString alloc] init]; // no-warning
546  [foo dealloc];
547  // foo is not leaked, since it has been deallocated.
548}
549
550void pr3820_ReleaseAfterDealloc(void)
551{
552  id foo = [[NSString alloc] init];
553  [foo dealloc];
554  [foo release];  // expected-warning{{used after it is release}}
555  // NSInternalInconsistencyException: message sent to deallocated object
556}
557
558void pr3820_DeallocAfterRelease(void)
559{
560  NSLog(@"\n\n[%s]", __FUNCTION__);
561  id foo = [[NSString alloc] init];
562  [foo release];
563  [foo dealloc]; // expected-warning{{used after it is released}}
564  // message sent to released object
565}
566
567// From <rdar://problem/6704930>.  The problem here is that 'length' binds to
568// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to
569// reason about '($0 - 1) > constant'.  As a temporary hack, we drop the value
570// of '($0 - 1)' and conjure a new symbol.
571void rdar6704930(unsigned char *s, unsigned int length) {
572  NSString* name = 0;
573  if (s != 0) {
574    if (length > 0) {
575      while (length > 0) {
576        if (*s == ':') {
577          ++s;
578          --length;
579          name = [[NSString alloc] init]; // no-warning
580          break;
581        }
582        ++s;
583        --length;
584      }
585      if ((length == 0) && (name != 0)) {
586        [name release];
587        name = 0;
588      }
589      if (length == 0) { // no ':' found -> use it all as name
590        name = [[NSString alloc] init]; // no-warning
591      }
592    }
593  }
594
595  if (name != 0) {
596    [name release];
597  }
598}
599
600//===----------------------------------------------------------------------===//
601// <rdar://problem/6833332>
602// One build of the analyzer accidentally stopped tracking the allocated
603// object after the 'retain'.
604//===----------------------------------------------------------------------===//
605
606@interface rdar_6833332 : NSObject <NSApplicationDelegate> {
607    NSWindow *window;
608}
609@property (nonatomic, retain) NSWindow *window;
610@end
611
612@implementation rdar_6833332
613@synthesize window;
614- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
615 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}}
616
617 [dict setObject:@"foo" forKey:@"bar"];
618
619 NSLog(@"%@", dict);
620}
621- (void)dealloc {
622    [window release];
623    [super dealloc];
624}
625@end
626
627//===----------------------------------------------------------------------===//
628// <rdar://problem/6257780> clang checker fails to catch use-after-release
629//===----------------------------------------------------------------------===//
630                                 
631int rdar_6257780_Case1() {
632  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
633  NSArray *array = [NSArray array];
634  [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
635  [pool drain];
636  return 0;
637}
638
639//===----------------------------------------------------------------------===//
640// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs
641//===----------------------------------------------------------------------===//
642
643void rdar_6866843() {
644 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
645 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];
646 NSArray* array = [[NSArray alloc] init];
647 [dictionary setObject:array forKey:@"key"];
648 [array release];
649 // Using 'array' here should be fine
650 NSLog(@"array = %@\n", array); // no-warning
651 // Now the array is released
652 [dictionary release];
653 [pool drain];
654}
655
656
657//===----------------------------------------------------------------------===//
658// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects
659//===----------------------------------------------------------------------===//
660
661typedef CFTypeRef OtherRef;
662
663@interface RDar6877235 : NSObject {}
664- (CFTypeRef)_copyCFTypeRef;
665- (OtherRef)_copyOtherRef;
666@end
667
668@implementation RDar6877235
669- (CFTypeRef)_copyCFTypeRef {
670  return [[NSString alloc] init]; // no-warning
671}
672- (OtherRef)_copyOtherRef {
673  return [[NSString alloc] init]; // no-warning
674}
675@end
676
677//===----------------------------------------------------------------------===//
678//<rdar://problem/6320065> false positive - init method returns an object
679// owned by caller
680//===----------------------------------------------------------------------===//
681
682@interface RDar6320065 : NSObject {
683  NSString *_foo;
684}
685- (id)initReturningNewClass;
686- (id)initReturningNewClassBad;
687- (id)initReturningNewClassBad2;
688@end
689
690@interface RDar6320065Subclass : RDar6320065
691@end
692
693@implementation RDar6320065
694- (id)initReturningNewClass {
695  [self release];
696  self = [[RDar6320065Subclass alloc] init]; // no-warning
697  return self;
698}
699- (id)initReturningNewClassBad {
700  [self release];
701  [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}}
702  return self;
703}
704- (id)initReturningNewClassBad2 {
705  [self release];
706  self = [[RDar6320065Subclass alloc] init];
707  return [self autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
708}
709
710@end
711
712@implementation RDar6320065Subclass
713@end
714
715int RDar6320065_test() {
716  RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning
717  [test release];
718  return 0;
719}
720
721//===----------------------------------------------------------------------===//
722// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 
723//  and claims the receiver
724//===----------------------------------------------------------------------===//
725
726@interface RDar7129086 : NSObject {} @end
727@implementation RDar7129086
728- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder {
729  [self release]; // no-warning
730  return [NSString alloc];  // no-warning
731}
732@end
733
734//===----------------------------------------------------------------------===//
735// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a
736//  retained object
737//===----------------------------------------------------------------------===//
738
739@interface RDar6859457 : NSObject {}
740- (NSString*) NoCopyString;
741- (NSString*) noCopyString;
742@end
743
744@implementation RDar6859457 
745- (NSString*) NoCopyString { return [[NSString alloc] init]; } // no-warning
746- (NSString*) noCopyString { return [[NSString alloc] init]; } // no-warning
747@end
748
749void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) {
750  [x NoCopyString]; // expected-warning{{leak}}
751  [x noCopyString]; // expected-warning{{leak}}
752  [NSData dataWithBytesNoCopy:bytes length:dataLength];  // no-warning
753  [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning
754}
755
756//===----------------------------------------------------------------------===//
757// PR 4230 - an autorelease pool is not necessarily leaked during a premature
758//  return
759//===----------------------------------------------------------------------===//
760
761static void PR4230(void)
762{
763  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning
764  NSString *object = [[[NSString alloc] init] autorelease]; // no-warning
765  return;
766}
767
768//===----------------------------------------------------------------------===//
769// Method name that has a null IdentifierInfo* for its first selector slot.
770// This test just makes sure that we handle it.
771//===----------------------------------------------------------------------===//
772
773@interface TestNullIdentifier
774@end
775
776@implementation TestNullIdentifier
777+ (id):(int)x, ... {
778  return [[NSString alloc] init]; // expected-warning{{leak}}
779}
780@end
781
782//===----------------------------------------------------------------------===//
783// <rdar://problem/6893565> don't flag leaks for return types that cannot be 
784//                          determined to be CF types
785//===----------------------------------------------------------------------===//
786
787// We don't know if 'struct s6893565' represents a Core Foundation type, so
788// we shouldn't emit an error here.
789typedef struct s6893565* TD6893565;
790
791@interface RDar6893565 {}
792-(TD6893565)newThing;
793@end
794
795@implementation RDar6893565
796-(TD6893565)newThing {  
797  return (TD6893565) [[NSString alloc] init]; // no-warning
798}
799@end
800
801//===----------------------------------------------------------------------===//
802// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods
803//===----------------------------------------------------------------------===//
804
805void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context,
806                 NSString *str, CIImage *img, CGRect rect,
807                 CIFormat form, CGColorSpaceRef cs) {
808  [view createSnapshotImageOfType:str]; // expected-warning{{leak}}
809  [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}}
810  [context createCGImage:img fromRect:rect]; // expected-warning{{leak}}
811  [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}}
812}
813
814//===----------------------------------------------------------------------===//
815// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:]
816//                           misinterpreted by clang scan-build
817//===----------------------------------------------------------------------===//
818
819void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) {
820  [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}}
821}
822
823//===----------------------------------------------------------------------===//
824// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 
825//                          checker
826//===----------------------------------------------------------------------===//
827
828void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options,  const char * bsdName) {  
829  IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}}
830}
831
832void IOServiceMatching_wrapper(const char * name) {
833  IOServiceMatching(name); // expected-warning{{leak}}
834}
835
836void IOServiceNameMatching_wrapper(const char * name) {
837  IOServiceNameMatching(name); // expected-warning{{leak}}
838}
839
840CF_RETURNS_RETAINED CFDictionaryRef CreateDict();
841
842void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType,
843  mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) {
844
845  CFDictionaryRef matching = CreateDict();
846  CFRelease(matching);
847  IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}}
848                           wakePort, reference, notification);
849}
850
851void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) {
852  IORegistryEntryIDMatching(entryID); // expected-warning{{leak}}
853}
854
855void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options,
856                                        const char * path) {
857  IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}}
858}
859
860void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) {
861  CFDictionaryRef matching = CreateDict();
862  IOServiceGetMatchingService(masterPort, matching);
863  CFRelease(matching); // expected-warning{{used after it is released}}
864}
865
866void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) {
867  CFDictionaryRef matching = CreateDict();
868  IOServiceGetMatchingServices(masterPort, matching, existing);
869  CFRelease(matching); // expected-warning{{used after it is released}}
870}
871
872void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 
873  IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) {
874    
875  CFDictionaryRef matching = CreateDict();
876  IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification);
877  CFRelease(matching); // expected-warning{{used after it is released}}
878}
879
880//===----------------------------------------------------------------------===//
881// Test of handling objects whose references "escape" to containers.
882//===----------------------------------------------------------------------===//
883
884// <rdar://problem/6539791>
885void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) {
886  CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
887  CFDictionaryAddValue(y, key, x);
888  CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet
889  signed z = 1;
890  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
891  if (value) {
892    CFDictionaryAddValue(x, val_key, value); // no-warning
893    CFRelease(value);
894    CFDictionaryAddValue(y, val_key, value); // no-warning
895  }
896}
897
898// <rdar://problem/6560661>
899// Same issue, except with "AppendValue" functions.
900void rdar_6560661(CFMutableArrayRef x) {
901  signed z = 1;
902  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
903  // CFArrayAppendValue keeps a reference to value.
904  CFArrayAppendValue(x, value);
905  CFRelease(value);
906  CFRetain(value);
907  CFRelease(value); // no-warning
908}
909
910// <rdar://problem/7152619>
911// Same issue, excwept with "CFAttributeStringSetAttribute".
912void rdar_7152619(CFStringRef str) {
913  CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0);
914  CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string);
915  CFRelease(string);
916  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
917  CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number);
918  [number release];
919  [number retain];
920  CFRelease(attrString);  
921}
922
923//===----------------------------------------------------------------------===//
924// Test of handling CGGradientXXX functions.
925//===----------------------------------------------------------------------===//
926
927void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
928                  CGPoint myEndPoint) {
929  size_t num_locations = 6;
930  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
931  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
932     x,  // Start color
933    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
934    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
935    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
936    255.0/255.0,255.0/255.0, 255.0/255.0, x,
937    255.0/255.0,255.0/255.0, 255.0/255.0, x
938  }; // End color
939  
940  CGGradientRef myGradient =
941    CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}}
942      components, locations, num_locations);
943
944  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
945                              0);
946  CGGradientRelease(myGradient);
947}
948
949void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
950                  CGPoint myEndPoint) {
951  size_t num_locations = 6;
952  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
953  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
954     x,  // Start color
955    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
956    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
957    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
958    255.0/255.0,255.0/255.0, 255.0/255.0, x,
959    255.0/255.0,255.0/255.0, 255.0/255.0, x
960  }; // End color
961  
962  CGGradientRef myGradient =
963   CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}}
964
965  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
966                              0);
967}
968
969//===----------------------------------------------------------------------===//
970// <rdar://problem/7299394> clang false positive: retained instance passed to
971//                          thread in pthread_create marked as leak
972//
973// Until we have full IPA, the analyzer should stop tracking the reference
974// count of objects passed to pthread_create.
975//
976//===----------------------------------------------------------------------===//
977
978struct _opaque_pthread_t {};
979struct _opaque_pthread_attr_t {};
980typedef struct _opaque_pthread_t *__darwin_pthread_t;
981typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
982typedef __darwin_pthread_t pthread_t;
983typedef __darwin_pthread_attr_t pthread_attr_t;
984
985int pthread_create(pthread_t * restrict, const pthread_attr_t * restrict,
986                   void *(*)(void *), void * restrict);
987
988void *rdar_7299394_start_routine(void *p) {
989  [((id) p) release];
990  return 0;
991}
992void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) {
993  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
994  pthread_create(thread, attr, rdar_7299394_start_routine, number);
995}
996void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) {
997  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
998}
999
1000//===----------------------------------------------------------------------===//
1001// <rdar://problem/7283567> False leak associated with call to 
1002//                          CVPixelBufferCreateWithBytes ()
1003//
1004// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and
1005// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the
1006// pixel buffer object.  These test cases show how the analyzer stops tracking
1007// the reference count for the objects passed for this argument.  This
1008// could be made smarter.
1009//===----------------------------------------------------------------------===//
1010
1011typedef int int32_t;
1012typedef UInt32 FourCharCode;
1013typedef FourCharCode OSType;
1014typedef uint64_t CVOptionFlags;
1015typedef int32_t CVReturn;
1016typedef struct __CVBuffer *CVBufferRef;
1017typedef CVBufferRef CVImageBufferRef;
1018typedef CVImageBufferRef CVPixelBufferRef;
1019typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress );
1020
1021extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1022            size_t width,
1023            size_t height,
1024            OSType pixelFormatType,
1025            void *baseAddress,
1026            size_t bytesPerRow,
1027            CVPixelBufferReleaseBytesCallback releaseCallback,
1028            void *releaseRefCon,
1029            CFDictionaryRef pixelBufferAttributes,
1030                   CVPixelBufferRef *pixelBufferOut) ;
1031
1032typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] );
1033
1034extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator,
1035        size_t width,
1036        size_t height,
1037        OSType pixelFormatType,
1038        void *dataPtr,
1039        size_t dataSize,
1040        size_t numberOfPlanes,
1041        void *planeBaseAddress[],
1042        size_t planeWidth[],
1043        size_t planeHeight[],
1044        size_t planeBytesPerRow[],
1045        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1046        void *releaseRefCon,
1047        CFDictionaryRef pixelBufferAttributes,
1048        CVPixelBufferRef *pixelBufferOut) ;
1049
1050extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1051            size_t width,
1052            size_t height,
1053            OSType pixelFormatType,
1054            void *baseAddress,
1055            size_t bytesPerRow,
1056            CVPixelBufferReleaseBytesCallback releaseCallback,
1057            void *releaseRefCon,
1058            CFDictionaryRef pixelBufferAttributes,
1059                   CVPixelBufferRef *pixelBufferOut) ;
1060
1061CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height,
1062                      OSType pixelFormatType, void *baseAddress,
1063                      size_t bytesPerRow,
1064                      CVPixelBufferReleaseBytesCallback releaseCallback,
1065                      CFDictionaryRef pixelBufferAttributes,
1066                      CVPixelBufferRef *pixelBufferOut) {
1067
1068  // For the allocated object, it doesn't really matter what type it is
1069  // for the purpose of this test.  All we want to show is that
1070  // this is freed later by the callback.
1071  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1072  
1073  return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType,
1074                                baseAddress, bytesPerRow, releaseCallback,
1075                                number, // potentially released by callback
1076                                pixelBufferAttributes, pixelBufferOut) ;
1077}
1078
1079CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height,
1080        OSType pixelFormatType, void *dataPtr, size_t dataSize,
1081        size_t numberOfPlanes, void *planeBaseAddress[],
1082        size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[],
1083        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1084        CFDictionaryRef pixelBufferAttributes,
1085        CVPixelBufferRef *pixelBufferOut) {
1086    
1087    // For the allocated object, it doesn't really matter what type it is
1088    // for the purpose of this test.  All we want to show is that
1089    // this is freed later by the callback.
1090    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1091
1092    return CVPixelBufferCreateWithPlanarBytes(allocator,
1093              width, height, pixelFormatType, dataPtr, dataSize,
1094              numberOfPlanes, planeBaseAddress, planeWidth,
1095              planeHeight, planeBytesPerRow, releaseCallback,
1096              number, // potentially released by callback
1097              pixelBufferAttributes, pixelBufferOut) ;
1098}
1099
1100//===----------------------------------------------------------------------===//
1101// <rdar://problem/7358899> False leak associated with 
1102//  CGBitmapContextCreateWithData
1103//===----------------------------------------------------------------------===//
1104typedef uint32_t CGBitmapInfo;
1105typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data);
1106    
1107CGContextRef CGBitmapContextCreateWithData(void *data,
1108    size_t width, size_t height, size_t bitsPerComponent,
1109    size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1110    CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo);
1111
1112void rdar_7358899(void *data,
1113      size_t width, size_t height, size_t bitsPerComponent,
1114      size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1115      CGBitmapContextReleaseDataCallback releaseCallback) {
1116
1117    // For the allocated object, it doesn't really matter what type it is
1118    // for the purpose of this test.  All we want to show is that
1119    // this is freed later by the callback.
1120    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1121
1122  CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}}
1123    bytesPerRow, space, bitmapInfo, releaseCallback, number);
1124}
1125
1126//===----------------------------------------------------------------------===//
1127// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to
1128//  start before '_' when determining Cocoa fundamental rule
1129//
1130// Previously the retain/release checker just skipped prefixes before the
1131// first '_' entirely.  Now the checker honors the prefix if it results in a
1132// recognizable naming convention (e.g., 'new', 'init').
1133//===----------------------------------------------------------------------===//
1134
1135@interface RDar7265711 {}
1136- (id) new_stuff;
1137@end
1138
1139void rdar7265711_a(RDar7265711 *x) {
1140  id y = [x new_stuff]; // expected-warning{{leak}}
1141}
1142
1143void rdar7265711_b(RDar7265711 *x) {
1144  id y = [x new_stuff]; // no-warning
1145  [y release];
1146}
1147
1148//===----------------------------------------------------------------------===//
1149// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a
1150//                          retained reference
1151//===----------------------------------------------------------------------===//
1152
1153@interface NSCursor : NSObject
1154+ (NSCursor *)dragCopyCursor;
1155@end
1156
1157void rdar7306898(void) {
1158  // 'dragCopyCursor' does not follow Cocoa's fundamental rule.  It is a noun, not an sentence
1159  // implying a 'copy' of something.
1160  NSCursor *c =  [NSCursor dragCopyCursor]; // no-warning
1161  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1162}
1163
1164//===----------------------------------------------------------------------===//
1165// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class
1166// directly is not likely what the user intended
1167//===----------------------------------------------------------------------===//
1168
1169@interface RDar7252064 : NSObject @end
1170void rdar7252064(void) {
1171  [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1172  [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1173  [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1174  [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}}
1175}
1176
1177//===----------------------------------------------------------------------===//
1178// Tests of ownership attributes.
1179//===----------------------------------------------------------------------===//
1180
1181typedef NSString* MyStringTy;
1182
1183@protocol FooP;
1184
1185@interface TestOwnershipAttr : NSObject
1186- (NSString*) returnsAnOwnedString  NS_RETURNS_RETAINED; // no-warning
1187- (NSString*) returnsAnOwnedCFString  CF_RETURNS_RETAINED; // no-warning
1188- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning
1189- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions or methods that return a pointer or Objective-C object}}
1190@end
1191
1192static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to function or method types}}
1193
1194void test_attr_1(TestOwnershipAttr *X) {
1195  NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}}
1196}
1197
1198void test_attr_1b(TestOwnershipAttr *X) {
1199  NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}}
1200}
1201
1202@interface MyClassTestCFAttr : NSObject {}
1203- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED;
1204- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED;
1205- (NSDate*) alsoReturnsRetained;
1206- (CFDateRef) alsoReturnsRetainedAsCF;
1207- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED;
1208@end
1209
1210CF_RETURNS_RETAINED
1211CFDateRef returnsRetainedCFDate()  {
1212  return CFDateCreate(0, CFAbsoluteTimeGetCurrent());
1213}
1214
1215@implementation MyClassTestCFAttr
1216- (NSDate*) returnsCFRetained {
1217  return (NSDate*) returnsRetainedCFDate(); // No leak.
1218}
1219
1220- (CFDateRef) returnsCFRetainedAsCF {
1221  return returnsRetainedCFDate(); // No leak.
1222}
1223
1224
1225- (NSDate*) alsoReturnsRetained {
1226  return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}}
1227}
1228
1229- (CFDateRef) alsoReturnsRetainedAsCF {
1230  return returnsRetainedCFDate(); // expected-warning{{leak}}
1231}
1232
1233
1234- (NSDate*) returnsNSRetained {
1235  return (NSDate*) returnsRetainedCFDate(); // no-warning
1236}
1237@end
1238
1239//===----------------------------------------------------------------------===//
1240// Test that leaks post-dominated by "panic" functions are not reported.
1241//
1242// <rdar://problem/5905851> do not report a leak when post-dominated by a call
1243// to a noreturn or panic function
1244//===----------------------------------------------------------------------===//
1245
1246void panic() __attribute__((noreturn));
1247
1248void test_panic_negative() {
1249  signed z = 1;
1250  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);  // expected-warning{{leak}}
1251}
1252
1253void test_panic_positive() {
1254  signed z = 1;
1255  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1256  panic();
1257}
1258
1259void test_panic_neg_2(int x) {
1260  signed z = 1;
1261  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}}
1262  if (x)
1263    panic();
1264}
1265
1266void test_panic_pos_2(int x) {
1267  signed z = 1;
1268  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1269  if (x)
1270    panic();  
1271  if (!x)
1272    panic();
1273}
1274
1275//===----------------------------------------------------------------------===//
1276// Test uses of blocks (closures)
1277//===----------------------------------------------------------------------===//
1278
1279void test_blocks_1_pos(void) {
1280  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1281  ^{}();
1282}
1283
1284void test_blocks_1_indirect_release(void) {
1285  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1286  ^{ [number release]; }();
1287}
1288
1289void test_blocks_1_indirect_retain(void) {
1290  // Eventually this should be reported as a leak.
1291  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1292  ^{ [number retain]; }();
1293}
1294
1295void test_blocks_1_indirect_release_via_call(void) {
1296  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1297  ^(NSObject *o){ [o release]; }(number);
1298}
1299
1300void test_blocks_1_indirect_retain_via_call(void) {
1301  // Eventually this should be reported as a leak.
1302  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1303  ^(NSObject *o){ [o retain]; }(number);
1304}
1305
1306