retain-release.m revision 6041111f3749e76a1712ec58dd17449bd3177ddd 
1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-check-objc-mem -analyzer-store=basic -fblocks -verify %s
2// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-check-objc-mem -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#if __has_feature(attribute_ns_returns_not_retained)
11#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))
12#endif
13#if __has_feature(attribute_cf_returns_not_retained)
14#define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained))
15#endif
16
17//===----------------------------------------------------------------------===//
18// The following code is reduced using delta-debugging from Mac OS X headers:
19//
20// #include <Cocoa/Cocoa.h>
21// #include <CoreFoundation/CoreFoundation.h>
22// #include <DiskArbitration/DiskArbitration.h>
23// #include <QuartzCore/QuartzCore.h>
24// #include <Quartz/Quartz.h>
25// #include <IOKit/IOKitLib.h>
26//
27// It includes the basic definitions for the test cases below.
28//===----------------------------------------------------------------------===//
29
30typedef unsigned int __darwin_natural_t;
31typedef unsigned long uintptr_t;
32typedef unsigned int uint32_t;
33typedef unsigned long long uint64_t;
34typedef unsigned int UInt32;
35typedef signed long CFIndex;
36typedef struct {
37    CFIndex location;
38    CFIndex length;
39} CFRange;
40static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) {
41    CFRange range;
42    range.location = loc;
43    range.length = len;
44    return range;
45}
46typedef const void * CFTypeRef;
47typedef const struct __CFString * CFStringRef;
48typedef const struct __CFAllocator * CFAllocatorRef;
49extern const CFAllocatorRef kCFAllocatorDefault;
50extern CFTypeRef CFRetain(CFTypeRef cf);
51extern void CFRelease(CFTypeRef cf);
52typedef struct {
53}
54CFArrayCallBacks;
55extern const CFArrayCallBacks kCFTypeArrayCallBacks;
56typedef const struct __CFArray * CFArrayRef;
57typedef struct __CFArray * CFMutableArrayRef;
58extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
59extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
60extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
61typedef struct {
62}
63CFDictionaryKeyCallBacks;
64extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks;
65typedef struct {
66}
67CFDictionaryValueCallBacks;
68extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks;
69typedef const struct __CFDictionary * CFDictionaryRef;
70typedef struct __CFDictionary * CFMutableDictionaryRef;
71extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks);
72typedef UInt32 CFStringEncoding;
73enum {
74kCFStringEncodingMacRoman = 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  };
75extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
76typedef double CFTimeInterval;
77typedef CFTimeInterval CFAbsoluteTime;
78extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
79typedef const struct __CFDate * CFDateRef;
80extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
81extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
82typedef __darwin_natural_t natural_t;
83typedef natural_t mach_port_name_t;
84typedef mach_port_name_t mach_port_t;
85typedef int kern_return_t;
86typedef kern_return_t mach_error_t;
87enum {
88kCFNumberSInt8Type = 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    };
89typedef CFIndex CFNumberType;
90typedef const struct __CFNumber * CFNumberRef;
91extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
92typedef const struct __CFAttributedString *CFAttributedStringRef;
93typedef struct __CFAttributedString *CFMutableAttributedStringRef;
94extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ;
95extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ;
96extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ;
97typedef signed char BOOL;
98typedef unsigned long NSUInteger;
99@class NSString, Protocol;
100extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
101typedef struct _NSZone NSZone;
102@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
103@protocol NSObject
104- (BOOL)isEqual:(id)object;
105- (id)retain;
106- (oneway void)release;
107- (id)autorelease;
108@end  @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone;
109@end  @protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone;
110@end  @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
111@end
112@interface NSObject <NSObject> {}
113+ (id)allocWithZone:(NSZone *)zone;
114+ (id)alloc;
115- (void)dealloc;
116@end
117@interface NSObject (NSCoderMethods)
118- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder;
119@end
120extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
121typedef struct {
122}
123NSFastEnumerationState;
124@protocol NSFastEnumeration  - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
125@end           @class NSString, NSDictionary;
126@interface NSValue : NSObject <NSCopying, NSCoding>  - (void)getValue:(void *)value;
127@end  @interface NSNumber : NSValue  - (char)charValue;
128- (id)initWithInt:(int)value;
129@end   @class NSString;
130@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
131@end  @interface NSArray (NSArrayCreation)  + (id)array;
132@end       @interface NSAutoreleasePool : NSObject {
133}
134- (void)drain;
135@end extern NSString * const NSBundleDidLoadNotification;
136typedef double NSTimeInterval;
137@interface NSDate : NSObject <NSCopying, NSCoding>  - (NSTimeInterval)timeIntervalSinceReferenceDate;
138@end            typedef unsigned short unichar;
139@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>    - (NSUInteger)length;
140- ( const char *)UTF8String;
141- (id)initWithUTF8String:(const char *)nullTerminatedCString;
142+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
143@end        @class NSString, NSURL, NSError;
144@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding>  - (NSUInteger)length;
145+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
146+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
147@end   @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary;
148@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
149@end    @interface NSMutableDictionary : NSDictionary  - (void)removeObjectForKey:(id)aKey;
150- (void)setObject:(id)anObject forKey:(id)aKey;
151@end  @interface NSMutableDictionary (NSMutableDictionaryCreation)  + (id)dictionaryWithCapacity:(NSUInteger)numItems;
152@end  typedef double CGFloat;
153struct CGSize {
154};
155typedef struct CGSize CGSize;
156struct CGRect {
157};
158typedef struct CGRect CGRect;
159typedef mach_port_t io_object_t;
160typedef char io_name_t[128];
161typedef io_object_t io_iterator_t;
162typedef io_object_t io_service_t;
163typedef struct IONotificationPort * IONotificationPortRef;
164typedef void (*IOServiceMatchingCallback)(  void * refcon,  io_iterator_t iterator );
165io_service_t IOServiceGetMatchingService(  mach_port_t masterPort,  CFDictionaryRef matching );
166kern_return_t IOServiceGetMatchingServices(  mach_port_t masterPort,  CFDictionaryRef matching,  io_iterator_t * existing );
167kern_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));
168kern_return_t IOServiceAddMatchingNotification(  IONotificationPortRef notifyPort,  const io_name_t notificationType,  CFDictionaryRef matching,         IOServiceMatchingCallback callback,         void * refCon,  io_iterator_t * notification );
169CFMutableDictionaryRef IOServiceMatching(  const char * name );
170CFMutableDictionaryRef IOServiceNameMatching(  const char * name );
171CFMutableDictionaryRef IOBSDNameMatching(  mach_port_t masterPort,  uint32_t options,  const char * bsdName );
172CFMutableDictionaryRef IOOpenFirmwarePathMatching(  mach_port_t masterPort,  uint32_t options,  const char * path );
173CFMutableDictionaryRef IORegistryEntryIDMatching(  uint64_t entryID );
174typedef struct __DASession * DASessionRef;
175extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
176typedef struct __DADisk * DADiskRef;
177extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
178extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
179extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
180extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
181@interface NSTask : NSObject - (id)init;
182@end                    typedef struct CGColorSpace *CGColorSpaceRef;
183typedef struct CGImage *CGImageRef;
184typedef struct CGLayer *CGLayerRef;
185@interface NSResponder : NSObject <NSCoding> {
186}
187@end    @protocol NSAnimatablePropertyContainer      - (id)animator;
188@end  extern NSString *NSAnimationTriggerOrderIn ;
189@interface NSView : NSResponder  <NSAnimatablePropertyContainer>  {
190}
191@end @protocol NSValidatedUserInterfaceItem - (SEL)action;
192@end   @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem;
193@end  @class NSDate, NSDictionary, NSError, NSException, NSNotification;
194@interface NSApplication : NSResponder <NSUserInterfaceValidations> {
195}
196@end   enum {
197NSTerminateCancel = 0,         NSTerminateNow = 1,         NSTerminateLater = 2 };
198typedef NSUInteger NSApplicationTerminateReply;
199@protocol NSApplicationDelegate <NSObject> @optional        - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
200@end  @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView;
201@interface NSCell : NSObject <NSCopying, NSCoding> {
202}
203@end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError;
204typedef struct {
205}
206CVTimeStamp;
207@interface CIImage : NSObject <NSCoding, NSCopying> {
208}
209typedef int CIFormat;
210@end  enum {
211kDAReturnSuccess = 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 };
212typedef mach_error_t DAReturn;
213typedef const struct __DADissenter * DADissenterRef;
214extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
215@interface CIContext: NSObject {
216}
217- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r;
218- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r     format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs;
219- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d;
220@end extern NSString* const QCRendererEventKey;
221@protocol QCCompositionRenderer - (NSDictionary*) attributes;
222@end   @interface QCRenderer : NSObject <QCCompositionRenderer> {
223}
224- (id) createSnapshotImageOfType:(NSString*)type;
225@end  extern NSString* const QCViewDidStartRenderingNotification;
226@interface QCView : NSView <QCCompositionRenderer> {
227}
228- (id) createSnapshotImageOfType:(NSString*)type;
229@end    enum {
230ICEXIFOrientation1 = 1,     ICEXIFOrientation2 = 2,     ICEXIFOrientation3 = 3,     ICEXIFOrientation4 = 4,     ICEXIFOrientation5 = 5,     ICEXIFOrientation6 = 6,     ICEXIFOrientation7 = 7,     ICEXIFOrientation8 = 8, };
231@class ICDevice;
232@protocol ICDeviceDelegate <NSObject>  @required      - (void)didRemoveDevice:(ICDevice*)device;
233@end extern NSString *const ICScannerStatusWarmingUp;
234@class ICScannerDevice;
235@protocol ICScannerDeviceDelegate <ICDeviceDelegate>  @optional       - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
236@end
237
238typedef long unsigned int __darwin_size_t;
239typedef __darwin_size_t size_t;
240typedef unsigned long CFTypeID;
241struct CGPoint {
242  CGFloat x;
243  CGFloat y;
244};
245typedef struct CGPoint CGPoint;
246typedef struct CGGradient *CGGradientRef;
247typedef uint32_t CGGradientDrawingOptions;
248extern CFTypeID CGGradientGetTypeID(void);
249extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef
250  space, const CGFloat components[], const CGFloat locations[], size_t count);
251extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space,
252  CFArrayRef colors, const CGFloat locations[]);
253extern CGGradientRef CGGradientRetain(CGGradientRef gradient);
254extern void CGGradientRelease(CGGradientRef gradient);
255typedef struct CGContext *CGContextRef;
256extern void CGContextDrawLinearGradient(CGContextRef context,
257    CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint,
258    CGGradientDrawingOptions options);
259extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void);
260
261//===----------------------------------------------------------------------===//
262// Test cases.
263//===----------------------------------------------------------------------===//
264
265CFAbsoluteTime f1() {
266  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
267  CFDateRef date = CFDateCreate(0, t);
268  CFRetain(date);
269  CFRelease(date);
270  CFDateGetAbsoluteTime(date); // no-warning
271  CFRelease(date);
272  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released.}}
273  return t;
274}
275
276CFAbsoluteTime f2() {
277  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
278  CFDateRef date = CFDateCreate(0, t);  
279  [((NSDate*) date) retain];
280  CFRelease(date);
281  CFDateGetAbsoluteTime(date); // no-warning
282  [((NSDate*) date) release];
283  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released.}}
284  return t;
285}
286
287
288NSDate* global_x;
289
290// Test to see if we supresss an error when we store the pointer
291// to a global.
292
293CFAbsoluteTime f3() {
294  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
295  CFDateRef date = CFDateCreate(0, t);  
296  [((NSDate*) date) retain];
297  CFRelease(date);
298  CFDateGetAbsoluteTime(date); // no-warning
299  global_x = (NSDate*) date;  
300  [((NSDate*) date) release];
301  t = CFDateGetAbsoluteTime(date);   // no-warning
302  return t;
303}
304
305//---------------------------------------------------------------------------
306// Test case 'f4' differs for region store and basic store.  See
307// retain-release-region-store.m and retain-release-basic-store.m.
308//---------------------------------------------------------------------------
309
310// Test a leak.
311
312CFAbsoluteTime f5(int x) {  
313  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
314  CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}}
315  
316  if (x)
317    CFRelease(date);
318  
319  return t;
320}
321
322// Test a leak involving the return.
323
324CFDateRef f6(int x) {  
325  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  // expected-warning{{leak}}
326  CFRetain(date);
327  return date;
328}
329
330// Test a leak involving an overwrite.
331
332CFDateRef f7() {
333  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  //expected-warning{{leak}}
334  CFRetain(date);
335  date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
336  return date;
337}
338
339// Generalization of Create rule.  MyDateCreate returns a CFXXXTypeRef, and
340// has the word create.
341CFDateRef MyDateCreate();
342
343CFDateRef f8() {
344  CFDateRef date = MyDateCreate(); // expected-warning{{leak}}
345  CFRetain(date);  
346  return date;
347}
348
349CFDateRef f9() {
350  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
351  int *p = 0;
352  // When allocations fail, CFDateCreate can return null.
353  if (!date) *p = 1; // expected-warning{{null}}
354  return date;
355}
356
357// Handle DiskArbitration API:
358//
359// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
360//
361void f10(io_service_t media, DADiskRef d, CFStringRef s) {
362  DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}}
363  if (disk) NSLog(@"ok");
364  
365  disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}}
366  if (disk) NSLog(@"ok");
367
368  CFDictionaryRef dict = DADiskCopyDescription(d);  // expected-warning{{leak}}
369  if (dict) NSLog(@"ok"); 
370  
371  disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}}
372  if (disk) NSLog(@"ok");
373    
374  DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault,   // expected-warning{{leak}}
375                                                kDAReturnSuccess, s);
376  if (dissenter) NSLog(@"ok");
377  
378  DASessionRef session = DASessionCreate(kCFAllocatorDefault);  // expected-warning{{leak}}
379  if (session) NSLog(@"ok");
380}
381
382// Test retain/release checker with CFString and CFMutableArray.
383void f11() {
384  // Create the array.
385  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
386
387  // Create a string.
388  CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
389                                             kCFStringEncodingUTF8);
390
391  // Add the string to the array.
392  CFArrayAppendValue(A, s1);
393  
394  // Decrement the reference count.
395  CFRelease(s1); // no-warning
396  
397  // Get the string.  We don't own it.
398  s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
399  
400  // Release the array.
401  CFRelease(A); // no-warning
402  
403  // Release the string.  This is a bug.
404  CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
405}
406
407// PR 3337: Handle functions declared using typedefs.
408typedef CFTypeRef CREATEFUN();
409CREATEFUN MyCreateFun;
410
411void f12() {
412  CFTypeRef o = MyCreateFun(); // expected-warning {{leak}}
413}
414
415void f13_autorelease() {
416  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
417  [(id) A autorelease]; // no-warning
418}
419
420void f13_autorelease_b() {
421  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
422  [(id) A autorelease];
423  [(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}}
424}
425
426CFMutableArrayRef f13_autorelease_c() {
427  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
428  [(id) A autorelease];
429  [(id) A autorelease]; 
430  return A; // expected-warning{{Object sent -autorelease too many times}}
431}
432
433CFMutableArrayRef f13_autorelease_d() {
434  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
435  [(id) A autorelease];
436  [(id) A autorelease]; 
437  CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}}
438  CFRelease(B); // no-warning
439  while (1) {}
440}
441
442
443// This case exercises the logic where the leak site is the same as the allocation site.
444void f14_leakimmediately() {
445  CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}}
446}
447
448// Test that we track an allocated object beyond the point where the *name*
449// of the variable storing the reference is no longer live.
450void f15() {
451  // Create the array.
452  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
453  CFMutableArrayRef *B = &A;
454  // At this point, the name 'A' is no longer live.
455  CFRelease(*B);  // no-warning
456}
457
458// Test when we pass NULL to CFRetain/CFRelease.
459void f16(int x, CFTypeRef p) {
460  if (p)
461    return;
462
463  if (x) {
464    CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}}
465  }
466  else {
467    CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}}
468  }
469}
470
471// Test basic tracking of ivars associated with 'self'.  For the retain/release
472// checker we currently do not want to flag leaks associated with stores
473// of tracked objects to ivars.
474@interface SelfIvarTest : NSObject {
475  id myObj;
476}
477- (void)test_self_tracking;
478@end
479
480@implementation SelfIvarTest
481- (void)test_self_tracking {
482  myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
483}
484@end
485
486// Test return of non-owned objects in contexts where an owned object
487// is expected.
488@interface TestReturnNotOwnedWhenExpectedOwned
489- (NSString*)newString;
490@end
491
492@implementation TestReturnNotOwnedWhenExpectedOwned
493- (NSString*)newString {
494  NSString *s = [NSString stringWithUTF8String:"hello"];
495  return s; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
496}
497@end
498
499// <rdar://problem/6659160>
500int isFoo(char c);
501
502static void rdar_6659160(char *inkind, char *inname)
503{
504  // We currently expect that [NSObject alloc] cannot fail.  This
505  // will be a toggled flag in the future.  It can indeed return null, but
506  // Cocoa programmers generally aren't expected to reason about out-of-memory
507  // conditions.
508  NSString *kind = [[NSString alloc] initWithUTF8String:inkind];  // expected-warning{{leak}}
509  
510  // We do allow stringWithUTF8String to fail.  This isn't really correct, as
511  // far as returning 0.  In most error conditions it will throw an exception.
512  // If allocation fails it could return 0, but again this
513  // isn't expected.
514  NSString *name = [NSString stringWithUTF8String:inname];
515  if(!name)
516    return;
517
518  const char *kindC = 0;
519  const char *nameC = 0;
520  
521  // In both cases, we cannot reach a point down below where we
522  // dereference kindC or nameC with either being null.  This is because
523  // we assume that [NSObject alloc] doesn't fail and that we have the guard
524  // up above.
525  
526  if(kind)
527    kindC = [kind UTF8String];
528  if(name)
529    nameC = [name UTF8String];
530  if(!isFoo(kindC[0])) // expected-warning{{null}}
531    return;
532  if(!isFoo(nameC[0])) // no-warning
533    return;
534
535  [kind release];
536  [name release]; // expected-warning{{Incorrect decrement of the reference count}}
537}
538
539// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming
540//  conventions with respect to 'return'ing ownership.
541@interface PR3677: NSObject @end
542@implementation PR3677
543+ (id)allocWithZone:(NSZone *)inZone {
544  return [super allocWithZone:inZone];  // no-warning
545}
546@end
547
548// PR 3820 - Reason about calls to -dealloc
549void pr3820_DeallocInsteadOfRelease(void)
550{
551  id foo = [[NSString alloc] init]; // no-warning
552  [foo dealloc];
553  // foo is not leaked, since it has been deallocated.
554}
555
556void pr3820_ReleaseAfterDealloc(void)
557{
558  id foo = [[NSString alloc] init];
559  [foo dealloc];
560  [foo release];  // expected-warning{{used after it is release}}
561  // NSInternalInconsistencyException: message sent to deallocated object
562}
563
564void pr3820_DeallocAfterRelease(void)
565{
566  NSLog(@"\n\n[%s]", __FUNCTION__);
567  id foo = [[NSString alloc] init];
568  [foo release];
569  [foo dealloc]; // expected-warning{{used after it is released}}
570  // message sent to released object
571}
572
573// From <rdar://problem/6704930>.  The problem here is that 'length' binds to
574// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to
575// reason about '($0 - 1) > constant'.  As a temporary hack, we drop the value
576// of '($0 - 1)' and conjure a new symbol.
577void rdar6704930(unsigned char *s, unsigned int length) {
578  NSString* name = 0;
579  if (s != 0) {
580    if (length > 0) {
581      while (length > 0) {
582        if (*s == ':') {
583          ++s;
584          --length;
585          name = [[NSString alloc] init]; // no-warning
586          break;
587        }
588        ++s;
589        --length;
590      }
591      if ((length == 0) && (name != 0)) {
592        [name release];
593        name = 0;
594      }
595      if (length == 0) { // no ':' found -> use it all as name
596        name = [[NSString alloc] init]; // no-warning
597      }
598    }
599  }
600
601  if (name != 0) {
602    [name release];
603  }
604}
605
606//===----------------------------------------------------------------------===//
607// <rdar://problem/6833332>
608// One build of the analyzer accidentally stopped tracking the allocated
609// object after the 'retain'.
610//===----------------------------------------------------------------------===//
611
612@interface rdar_6833332 : NSObject <NSApplicationDelegate> {
613    NSWindow *window;
614}
615@property (nonatomic, retain) NSWindow *window;
616@end
617
618@implementation rdar_6833332
619@synthesize window;
620- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
621 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}}
622
623 [dict setObject:@"foo" forKey:@"bar"];
624
625 NSLog(@"%@", dict);
626}
627- (void)dealloc {
628    [window release];
629    [super dealloc];
630}
631@end
632
633//===----------------------------------------------------------------------===//
634// <rdar://problem/6257780> clang checker fails to catch use-after-release
635//===----------------------------------------------------------------------===//
636                                 
637int rdar_6257780_Case1() {
638  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
639  NSArray *array = [NSArray array];
640  [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
641  [pool drain];
642  return 0;
643}
644
645//===----------------------------------------------------------------------===//
646// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs
647//===----------------------------------------------------------------------===//
648
649void rdar_6866843() {
650 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
651 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];
652 NSArray* array = [[NSArray alloc] init];
653 [dictionary setObject:array forKey:@"key"];
654 [array release];
655 // Using 'array' here should be fine
656 NSLog(@"array = %@\n", array); // no-warning
657 // Now the array is released
658 [dictionary release];
659 [pool drain];
660}
661
662
663//===----------------------------------------------------------------------===//
664// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects
665//===----------------------------------------------------------------------===//
666
667typedef CFTypeRef OtherRef;
668
669@interface RDar6877235 : NSObject {}
670- (CFTypeRef)_copyCFTypeRef;
671- (OtherRef)_copyOtherRef;
672@end
673
674@implementation RDar6877235
675- (CFTypeRef)_copyCFTypeRef {
676  return [[NSString alloc] init]; // no-warning
677}
678- (OtherRef)_copyOtherRef {
679  return [[NSString alloc] init]; // no-warning
680}
681@end
682
683//===----------------------------------------------------------------------===//
684//<rdar://problem/6320065> false positive - init method returns an object
685// owned by caller
686//===----------------------------------------------------------------------===//
687
688@interface RDar6320065 : NSObject {
689  NSString *_foo;
690}
691- (id)initReturningNewClass;
692- (id)initReturningNewClassBad;
693- (id)initReturningNewClassBad2;
694@end
695
696@interface RDar6320065Subclass : RDar6320065
697@end
698
699@implementation RDar6320065
700- (id)initReturningNewClass {
701  [self release];
702  self = [[RDar6320065Subclass alloc] init]; // no-warning
703  return self;
704}
705- (id)initReturningNewClassBad {
706  [self release];
707  [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}}
708  return self;
709}
710- (id)initReturningNewClassBad2 {
711  [self release];
712  self = [[RDar6320065Subclass alloc] init];
713  return [self autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
714}
715
716@end
717
718@implementation RDar6320065Subclass
719@end
720
721int RDar6320065_test() {
722  RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning
723  [test release];
724  return 0;
725}
726
727//===----------------------------------------------------------------------===//
728// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 
729//  and claims the receiver
730//===----------------------------------------------------------------------===//
731
732@interface RDar7129086 : NSObject {} @end
733@implementation RDar7129086
734- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder {
735  [self release]; // no-warning
736  return [NSString alloc];  // no-warning
737}
738@end
739
740//===----------------------------------------------------------------------===//
741// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a
742//  retained object
743//===----------------------------------------------------------------------===//
744
745@interface RDar6859457 : NSObject {}
746- (NSString*) NoCopyString;
747- (NSString*) noCopyString;
748@end
749
750@implementation RDar6859457 
751- (NSString*) NoCopyString { return [[NSString alloc] init]; } // no-warning
752- (NSString*) noCopyString { return [[NSString alloc] init]; } // no-warning
753@end
754
755void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) {
756  [x NoCopyString]; // expected-warning{{leak}}
757  [x noCopyString]; // expected-warning{{leak}}
758  [NSData dataWithBytesNoCopy:bytes length:dataLength];  // no-warning
759  [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning
760}
761
762//===----------------------------------------------------------------------===//
763// PR 4230 - an autorelease pool is not necessarily leaked during a premature
764//  return
765//===----------------------------------------------------------------------===//
766
767static void PR4230(void)
768{
769  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning
770  NSString *object = [[[NSString alloc] init] autorelease]; // no-warning
771  return;
772}
773
774//===----------------------------------------------------------------------===//
775// Method name that has a null IdentifierInfo* for its first selector slot.
776// This test just makes sure that we handle it.
777//===----------------------------------------------------------------------===//
778
779@interface TestNullIdentifier
780@end
781
782@implementation TestNullIdentifier
783+ (id):(int)x, ... {
784  return [[NSString alloc] init]; // expected-warning{{leak}}
785}
786@end
787
788//===----------------------------------------------------------------------===//
789// <rdar://problem/6893565> don't flag leaks for return types that cannot be 
790//                          determined to be CF types
791//===----------------------------------------------------------------------===//
792
793// We don't know if 'struct s6893565' represents a Core Foundation type, so
794// we shouldn't emit an error here.
795typedef struct s6893565* TD6893565;
796
797@interface RDar6893565 {}
798-(TD6893565)newThing;
799@end
800
801@implementation RDar6893565
802-(TD6893565)newThing {  
803  return (TD6893565) [[NSString alloc] init]; // no-warning
804}
805@end
806
807//===----------------------------------------------------------------------===//
808// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods
809//===----------------------------------------------------------------------===//
810
811void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context,
812                 NSString *str, CIImage *img, CGRect rect,
813                 CIFormat form, CGColorSpaceRef cs) {
814  [view createSnapshotImageOfType:str]; // expected-warning{{leak}}
815  [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}}
816  [context createCGImage:img fromRect:rect]; // expected-warning{{leak}}
817  [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}}
818}
819
820//===----------------------------------------------------------------------===//
821// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:]
822//                           misinterpreted by clang scan-build
823//===----------------------------------------------------------------------===//
824
825void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) {
826  [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}}
827}
828
829//===----------------------------------------------------------------------===//
830// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 
831//                          checker
832//===----------------------------------------------------------------------===//
833
834void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options,  const char * bsdName) {  
835  IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}}
836}
837
838void IOServiceMatching_wrapper(const char * name) {
839  IOServiceMatching(name); // expected-warning{{leak}}
840}
841
842void IOServiceNameMatching_wrapper(const char * name) {
843  IOServiceNameMatching(name); // expected-warning{{leak}}
844}
845
846CF_RETURNS_RETAINED CFDictionaryRef CreateDict();
847
848void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType,
849  mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) {
850
851  CFDictionaryRef matching = CreateDict();
852  CFRelease(matching);
853  IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}}
854                           wakePort, reference, notification);
855}
856
857void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) {
858  IORegistryEntryIDMatching(entryID); // expected-warning{{leak}}
859}
860
861void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options,
862                                        const char * path) {
863  IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}}
864}
865
866void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) {
867  CFDictionaryRef matching = CreateDict();
868  IOServiceGetMatchingService(masterPort, matching);
869  CFRelease(matching); // expected-warning{{used after it is released}}
870}
871
872void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) {
873  CFDictionaryRef matching = CreateDict();
874  IOServiceGetMatchingServices(masterPort, matching, existing);
875  CFRelease(matching); // expected-warning{{used after it is released}}
876}
877
878void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 
879  IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) {
880    
881  CFDictionaryRef matching = CreateDict();
882  IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification);
883  CFRelease(matching); // expected-warning{{used after it is released}}
884}
885
886//===----------------------------------------------------------------------===//
887// Test of handling objects whose references "escape" to containers.
888//===----------------------------------------------------------------------===//
889
890void CFDictionaryAddValue();
891
892// <rdar://problem/6539791>
893void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) {
894  CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
895  CFDictionaryAddValue(y, key, x);
896  CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet
897  signed z = 1;
898  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
899  if (value) {
900    CFDictionaryAddValue(x, val_key, value); // no-warning
901    CFRelease(value);
902    CFDictionaryAddValue(y, val_key, value); // no-warning
903  }
904}
905
906// <rdar://problem/6560661>
907// Same issue, except with "AppendValue" functions.
908void rdar_6560661(CFMutableArrayRef x) {
909  signed z = 1;
910  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
911  // CFArrayAppendValue keeps a reference to value.
912  CFArrayAppendValue(x, value);
913  CFRelease(value);
914  CFRetain(value);
915  CFRelease(value); // no-warning
916}
917
918// <rdar://problem/7152619>
919// Same issue, excwept with "CFAttributeStringSetAttribute".
920void rdar_7152619(CFStringRef str) {
921  CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0);
922  CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string);
923  CFRelease(string);
924  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
925  CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number);
926  [number release];
927  [number retain];
928  CFRelease(attrString);  
929}
930
931//===----------------------------------------------------------------------===//
932// Test of handling CGGradientXXX functions.
933//===----------------------------------------------------------------------===//
934
935void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
936                  CGPoint myEndPoint) {
937  size_t num_locations = 6;
938  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
939  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
940     x,  // Start color
941    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
942    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
943    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
944    255.0/255.0,255.0/255.0, 255.0/255.0, x,
945    255.0/255.0,255.0/255.0, 255.0/255.0, x
946  }; // End color
947  
948  CGGradientRef myGradient =
949    CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}}
950      components, locations, num_locations);
951
952  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
953                              0);
954  CGGradientRelease(myGradient);
955}
956
957void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
958                  CGPoint myEndPoint) {
959  size_t num_locations = 6;
960  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
961  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
962     x,  // Start color
963    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
964    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
965    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
966    255.0/255.0,255.0/255.0, 255.0/255.0, x,
967    255.0/255.0,255.0/255.0, 255.0/255.0, x
968  }; // End color
969  
970  CGGradientRef myGradient =
971   CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}}
972
973  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
974                              0);
975}
976
977//===----------------------------------------------------------------------===//
978// <rdar://problem/7299394> clang false positive: retained instance passed to
979//                          thread in pthread_create marked as leak
980//
981// Until we have full IPA, the analyzer should stop tracking the reference
982// count of objects passed to pthread_create.
983//
984//===----------------------------------------------------------------------===//
985
986struct _opaque_pthread_t {};
987struct _opaque_pthread_attr_t {};
988typedef struct _opaque_pthread_t *__darwin_pthread_t;
989typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
990typedef __darwin_pthread_t pthread_t;
991typedef __darwin_pthread_attr_t pthread_attr_t;
992
993int pthread_create(pthread_t * restrict, const pthread_attr_t * restrict,
994                   void *(*)(void *), void * restrict);
995
996void *rdar_7299394_start_routine(void *p) {
997  [((id) p) release];
998  return 0;
999}
1000void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) {
1001  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1002  pthread_create(thread, attr, rdar_7299394_start_routine, number);
1003}
1004void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) {
1005  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1006}
1007
1008//===----------------------------------------------------------------------===//
1009// <rdar://problem/7283567> False leak associated with call to 
1010//                          CVPixelBufferCreateWithBytes ()
1011//
1012// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and
1013// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the
1014// pixel buffer object.  These test cases show how the analyzer stops tracking
1015// the reference count for the objects passed for this argument.  This
1016// could be made smarter.
1017//===----------------------------------------------------------------------===//
1018
1019typedef int int32_t;
1020typedef UInt32 FourCharCode;
1021typedef FourCharCode OSType;
1022typedef uint64_t CVOptionFlags;
1023typedef int32_t CVReturn;
1024typedef struct __CVBuffer *CVBufferRef;
1025typedef CVBufferRef CVImageBufferRef;
1026typedef CVImageBufferRef CVPixelBufferRef;
1027typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress );
1028
1029extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1030            size_t width,
1031            size_t height,
1032            OSType pixelFormatType,
1033            void *baseAddress,
1034            size_t bytesPerRow,
1035            CVPixelBufferReleaseBytesCallback releaseCallback,
1036            void *releaseRefCon,
1037            CFDictionaryRef pixelBufferAttributes,
1038                   CVPixelBufferRef *pixelBufferOut) ;
1039
1040typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] );
1041
1042extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator,
1043        size_t width,
1044        size_t height,
1045        OSType pixelFormatType,
1046        void *dataPtr,
1047        size_t dataSize,
1048        size_t numberOfPlanes,
1049        void *planeBaseAddress[],
1050        size_t planeWidth[],
1051        size_t planeHeight[],
1052        size_t planeBytesPerRow[],
1053        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1054        void *releaseRefCon,
1055        CFDictionaryRef pixelBufferAttributes,
1056        CVPixelBufferRef *pixelBufferOut) ;
1057
1058extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1059            size_t width,
1060            size_t height,
1061            OSType pixelFormatType,
1062            void *baseAddress,
1063            size_t bytesPerRow,
1064            CVPixelBufferReleaseBytesCallback releaseCallback,
1065            void *releaseRefCon,
1066            CFDictionaryRef pixelBufferAttributes,
1067                   CVPixelBufferRef *pixelBufferOut) ;
1068
1069CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height,
1070                      OSType pixelFormatType, void *baseAddress,
1071                      size_t bytesPerRow,
1072                      CVPixelBufferReleaseBytesCallback releaseCallback,
1073                      CFDictionaryRef pixelBufferAttributes,
1074                      CVPixelBufferRef *pixelBufferOut) {
1075
1076  // For the allocated object, it doesn't really matter what type it is
1077  // for the purpose of this test.  All we want to show is that
1078  // this is freed later by the callback.
1079  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1080  
1081  return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType,
1082                                baseAddress, bytesPerRow, releaseCallback,
1083                                number, // potentially released by callback
1084                                pixelBufferAttributes, pixelBufferOut) ;
1085}
1086
1087CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height,
1088        OSType pixelFormatType, void *dataPtr, size_t dataSize,
1089        size_t numberOfPlanes, void *planeBaseAddress[],
1090        size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[],
1091        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1092        CFDictionaryRef pixelBufferAttributes,
1093        CVPixelBufferRef *pixelBufferOut) {
1094    
1095    // For the allocated object, it doesn't really matter what type it is
1096    // for the purpose of this test.  All we want to show is that
1097    // this is freed later by the callback.
1098    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1099
1100    return CVPixelBufferCreateWithPlanarBytes(allocator,
1101              width, height, pixelFormatType, dataPtr, dataSize,
1102              numberOfPlanes, planeBaseAddress, planeWidth,
1103              planeHeight, planeBytesPerRow, releaseCallback,
1104              number, // potentially released by callback
1105              pixelBufferAttributes, pixelBufferOut) ;
1106}
1107
1108//===----------------------------------------------------------------------===//
1109// <rdar://problem/7358899> False leak associated with 
1110//  CGBitmapContextCreateWithData
1111//===----------------------------------------------------------------------===//
1112typedef uint32_t CGBitmapInfo;
1113typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data);
1114    
1115CGContextRef CGBitmapContextCreateWithData(void *data,
1116    size_t width, size_t height, size_t bitsPerComponent,
1117    size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1118    CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo);
1119
1120void rdar_7358899(void *data,
1121      size_t width, size_t height, size_t bitsPerComponent,
1122      size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1123      CGBitmapContextReleaseDataCallback releaseCallback) {
1124
1125    // For the allocated object, it doesn't really matter what type it is
1126    // for the purpose of this test.  All we want to show is that
1127    // this is freed later by the callback.
1128    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1129
1130  CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}}
1131    bytesPerRow, space, bitmapInfo, releaseCallback, number);
1132}
1133
1134//===----------------------------------------------------------------------===//
1135// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to
1136//  start before '_' when determining Cocoa fundamental rule
1137//
1138// Previously the retain/release checker just skipped prefixes before the
1139// first '_' entirely.  Now the checker honors the prefix if it results in a
1140// recognizable naming convention (e.g., 'new', 'init').
1141//===----------------------------------------------------------------------===//
1142
1143@interface RDar7265711 {}
1144- (id) new_stuff;
1145@end
1146
1147void rdar7265711_a(RDar7265711 *x) {
1148  id y = [x new_stuff]; // expected-warning{{leak}}
1149}
1150
1151void rdar7265711_b(RDar7265711 *x) {
1152  id y = [x new_stuff]; // no-warning
1153  [y release];
1154}
1155
1156//===----------------------------------------------------------------------===//
1157// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a
1158//                          retained reference
1159//===----------------------------------------------------------------------===//
1160
1161@interface NSCursor : NSObject
1162+ (NSCursor *)dragCopyCursor;
1163@end
1164
1165void rdar7306898(void) {
1166  // 'dragCopyCursor' does not follow Cocoa's fundamental rule.  It is a noun, not an sentence
1167  // implying a 'copy' of something.
1168  NSCursor *c =  [NSCursor dragCopyCursor]; // no-warning
1169  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1170}
1171
1172//===----------------------------------------------------------------------===//
1173// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class
1174// directly is not likely what the user intended
1175//===----------------------------------------------------------------------===//
1176
1177@interface RDar7252064 : NSObject @end
1178void rdar7252064(void) {
1179  [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1180  [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1181  [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1182  [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}}
1183}
1184
1185//===----------------------------------------------------------------------===//
1186// Tests of ownership attributes.
1187//===----------------------------------------------------------------------===//
1188
1189typedef NSString* MyStringTy;
1190
1191@protocol FooP;
1192
1193@interface TestOwnershipAttr : NSObject
1194- (NSString*) returnsAnOwnedString  NS_RETURNS_RETAINED; // no-warning
1195- (NSString*) returnsAnOwnedCFString  CF_RETURNS_RETAINED; // no-warning
1196- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning
1197- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning
1198- (NSString*) newStringNoAttr;
1199- (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}}
1200@end
1201
1202static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to function or method types}}
1203
1204void test_attr_1(TestOwnershipAttr *X) {
1205  NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}}
1206}
1207
1208void test_attr_1b(TestOwnershipAttr *X) {
1209  NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}}
1210}
1211
1212void test_attr1c(TestOwnershipAttr *X) {
1213  NSString *str = [X newString]; // no-warning
1214  NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}}
1215}
1216
1217@interface MyClassTestCFAttr : NSObject {}
1218- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED;
1219- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED;
1220- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED;
1221- (CFDateRef) newCFRetainedAsCFNoAttr;
1222- (NSDate*) alsoReturnsRetained;
1223- (CFDateRef) alsoReturnsRetainedAsCF;
1224- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED;
1225@end
1226
1227CF_RETURNS_RETAINED
1228CFDateRef returnsRetainedCFDate()  {
1229  return CFDateCreate(0, CFAbsoluteTimeGetCurrent());
1230}
1231
1232@implementation MyClassTestCFAttr
1233- (NSDate*) returnsCFRetained {
1234  return (NSDate*) returnsRetainedCFDate(); // No leak.
1235}
1236
1237- (CFDateRef) returnsCFRetainedAsCF {
1238  return returnsRetainedCFDate(); // No leak.
1239}
1240
1241- (CFDateRef) newCFRetainedAsCF {
1242  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease];
1243}
1244
1245- (CFDateRef) newCFRetainedAsCFNoAttr {
1246  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
1247}
1248
1249- (NSDate*) alsoReturnsRetained {
1250  return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}}
1251}
1252
1253- (CFDateRef) alsoReturnsRetainedAsCF {
1254  return returnsRetainedCFDate(); // expected-warning{{leak}}
1255}
1256
1257
1258- (NSDate*) returnsNSRetained {
1259  return (NSDate*) returnsRetainedCFDate(); // no-warning
1260}
1261@end
1262
1263//===----------------------------------------------------------------------===//
1264// Test that leaks post-dominated by "panic" functions are not reported.
1265//
1266// <rdar://problem/5905851> do not report a leak when post-dominated by a call
1267// to a noreturn or panic function
1268//===----------------------------------------------------------------------===//
1269
1270void panic() __attribute__((noreturn));
1271
1272void test_panic_negative() {
1273  signed z = 1;
1274  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);  // expected-warning{{leak}}
1275}
1276
1277void test_panic_positive() {
1278  signed z = 1;
1279  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1280  panic();
1281}
1282
1283void test_panic_neg_2(int x) {
1284  signed z = 1;
1285  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}}
1286  if (x)
1287    panic();
1288}
1289
1290void test_panic_pos_2(int x) {
1291  signed z = 1;
1292  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1293  if (x)
1294    panic();  
1295  if (!x)
1296    panic();
1297}
1298
1299//===----------------------------------------------------------------------===//
1300// Test uses of blocks (closures)
1301//===----------------------------------------------------------------------===//
1302
1303void test_blocks_1_pos(void) {
1304  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1305  ^{}();
1306}
1307
1308void test_blocks_1_indirect_release(void) {
1309  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1310  ^{ [number release]; }();
1311}
1312
1313void test_blocks_1_indirect_retain(void) {
1314  // Eventually this should be reported as a leak.
1315  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1316  ^{ [number retain]; }();
1317}
1318
1319void test_blocks_1_indirect_release_via_call(void) {
1320  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1321  ^(NSObject *o){ [o release]; }(number);
1322}
1323
1324void test_blocks_1_indirect_retain_via_call(void) {
1325  // Eventually this should be reported as a leak.
1326  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1327  ^(NSObject *o){ [o retain]; }(number);
1328}
1329
1330