retain-release.m revision 12b9434d5bf801e24242b1f6fd04899f8a7fa92c 
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#if __has_feature(attribute_ns_consumes_self)
17#define NS_CONSUMES_SELF __attribute__((ns_consumes_self))
18#endif
19
20//===----------------------------------------------------------------------===//
21// The following code is reduced using delta-debugging from Mac OS X headers:
22//
23// #include <Cocoa/Cocoa.h>
24// #include <CoreFoundation/CoreFoundation.h>
25// #include <DiskArbitration/DiskArbitration.h>
26// #include <QuartzCore/QuartzCore.h>
27// #include <Quartz/Quartz.h>
28// #include <IOKit/IOKitLib.h>
29//
30// It includes the basic definitions for the test cases below.
31//===----------------------------------------------------------------------===//
32
33typedef unsigned int __darwin_natural_t;
34typedef unsigned long uintptr_t;
35typedef unsigned int uint32_t;
36typedef unsigned long long uint64_t;
37typedef unsigned int UInt32;
38typedef signed long CFIndex;
39typedef struct {
40    CFIndex location;
41    CFIndex length;
42} CFRange;
43static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) {
44    CFRange range;
45    range.location = loc;
46    range.length = len;
47    return range;
48}
49typedef const void * CFTypeRef;
50typedef const struct __CFString * CFStringRef;
51typedef const struct __CFAllocator * CFAllocatorRef;
52extern const CFAllocatorRef kCFAllocatorDefault;
53extern CFTypeRef CFRetain(CFTypeRef cf);
54extern void CFRelease(CFTypeRef cf);
55typedef struct {
56}
57CFArrayCallBacks;
58extern const CFArrayCallBacks kCFTypeArrayCallBacks;
59typedef const struct __CFArray * CFArrayRef;
60typedef struct __CFArray * CFMutableArrayRef;
61extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
62extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
63extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
64typedef struct {
65}
66CFDictionaryKeyCallBacks;
67extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks;
68typedef struct {
69}
70CFDictionaryValueCallBacks;
71extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks;
72typedef const struct __CFDictionary * CFDictionaryRef;
73typedef struct __CFDictionary * CFMutableDictionaryRef;
74extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks);
75typedef UInt32 CFStringEncoding;
76enum {
77kCFStringEncodingMacRoman = 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  };
78extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
79typedef double CFTimeInterval;
80typedef CFTimeInterval CFAbsoluteTime;
81extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
82typedef const struct __CFDate * CFDateRef;
83extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
84extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
85typedef __darwin_natural_t natural_t;
86typedef natural_t mach_port_name_t;
87typedef mach_port_name_t mach_port_t;
88typedef int kern_return_t;
89typedef kern_return_t mach_error_t;
90enum {
91kCFNumberSInt8Type = 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    };
92typedef CFIndex CFNumberType;
93typedef const struct __CFNumber * CFNumberRef;
94extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
95typedef const struct __CFAttributedString *CFAttributedStringRef;
96typedef struct __CFAttributedString *CFMutableAttributedStringRef;
97extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ;
98extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ;
99extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ;
100typedef signed char BOOL;
101typedef unsigned long NSUInteger;
102@class NSString, Protocol;
103extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
104typedef struct _NSZone NSZone;
105@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
106@protocol NSObject
107- (BOOL)isEqual:(id)object;
108- (id)retain;
109- (oneway void)release;
110- (id)autorelease;
111@end  @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone;
112@end  @protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone;
113@end  @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
114@end
115@interface NSObject <NSObject> {}
116+ (id)allocWithZone:(NSZone *)zone;
117+ (id)alloc;
118- (void)dealloc;
119@end
120@interface NSObject (NSCoderMethods)
121- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder;
122@end
123extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
124typedef struct {
125}
126NSFastEnumerationState;
127@protocol NSFastEnumeration  - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
128@end           @class NSString, NSDictionary;
129@interface NSValue : NSObject <NSCopying, NSCoding>  - (void)getValue:(void *)value;
130@end  @interface NSNumber : NSValue  - (char)charValue;
131- (id)initWithInt:(int)value;
132@end   @class NSString;
133@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
134@end  @interface NSArray (NSArrayCreation)  + (id)array;
135@end       @interface NSAutoreleasePool : NSObject {
136}
137- (void)drain;
138@end extern NSString * const NSBundleDidLoadNotification;
139typedef double NSTimeInterval;
140@interface NSDate : NSObject <NSCopying, NSCoding>  - (NSTimeInterval)timeIntervalSinceReferenceDate;
141@end            typedef unsigned short unichar;
142@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>    - (NSUInteger)length;
143- ( const char *)UTF8String;
144- (id)initWithUTF8String:(const char *)nullTerminatedCString;
145+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
146@end        @class NSString, NSURL, NSError;
147@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding>  - (NSUInteger)length;
148+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
149+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
150@end   @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary;
151@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count;
152@end    @interface NSMutableDictionary : NSDictionary  - (void)removeObjectForKey:(id)aKey;
153- (void)setObject:(id)anObject forKey:(id)aKey;
154@end  @interface NSMutableDictionary (NSMutableDictionaryCreation)  + (id)dictionaryWithCapacity:(NSUInteger)numItems;
155@end  typedef double CGFloat;
156struct CGSize {
157};
158typedef struct CGSize CGSize;
159struct CGRect {
160};
161typedef struct CGRect CGRect;
162typedef mach_port_t io_object_t;
163typedef char io_name_t[128];
164typedef io_object_t io_iterator_t;
165typedef io_object_t io_service_t;
166typedef struct IONotificationPort * IONotificationPortRef;
167typedef void (*IOServiceMatchingCallback)(  void * refcon,  io_iterator_t iterator );
168io_service_t IOServiceGetMatchingService(  mach_port_t masterPort,  CFDictionaryRef matching );
169kern_return_t IOServiceGetMatchingServices(  mach_port_t masterPort,  CFDictionaryRef matching,  io_iterator_t * existing );
170kern_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));
171kern_return_t IOServiceAddMatchingNotification(  IONotificationPortRef notifyPort,  const io_name_t notificationType,  CFDictionaryRef matching,         IOServiceMatchingCallback callback,         void * refCon,  io_iterator_t * notification );
172CFMutableDictionaryRef IOServiceMatching(  const char * name );
173CFMutableDictionaryRef IOServiceNameMatching(  const char * name );
174CFMutableDictionaryRef IOBSDNameMatching(  mach_port_t masterPort,  uint32_t options,  const char * bsdName );
175CFMutableDictionaryRef IOOpenFirmwarePathMatching(  mach_port_t masterPort,  uint32_t options,  const char * path );
176CFMutableDictionaryRef IORegistryEntryIDMatching(  uint64_t entryID );
177typedef struct __DASession * DASessionRef;
178extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
179typedef struct __DADisk * DADiskRef;
180extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
181extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
182extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
183extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
184@interface NSTask : NSObject - (id)init;
185@end                    typedef struct CGColorSpace *CGColorSpaceRef;
186typedef struct CGImage *CGImageRef;
187typedef struct CGLayer *CGLayerRef;
188@interface NSResponder : NSObject <NSCoding> {
189}
190@end    @protocol NSAnimatablePropertyContainer      - (id)animator;
191@end  extern NSString *NSAnimationTriggerOrderIn ;
192@interface NSView : NSResponder  <NSAnimatablePropertyContainer>  {
193}
194@end @protocol NSValidatedUserInterfaceItem - (SEL)action;
195@end   @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem;
196@end  @class NSDate, NSDictionary, NSError, NSException, NSNotification;
197@interface NSApplication : NSResponder <NSUserInterfaceValidations> {
198}
199@end   enum {
200NSTerminateCancel = 0,         NSTerminateNow = 1,         NSTerminateLater = 2 };
201typedef NSUInteger NSApplicationTerminateReply;
202@protocol NSApplicationDelegate <NSObject> @optional        - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
203@end  @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView;
204@interface NSCell : NSObject <NSCopying, NSCoding> {
205}
206@end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError;
207typedef struct {
208}
209CVTimeStamp;
210@interface CIImage : NSObject <NSCoding, NSCopying> {
211}
212typedef int CIFormat;
213@end  enum {
214kDAReturnSuccess = 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 };
215typedef mach_error_t DAReturn;
216typedef const struct __DADissenter * DADissenterRef;
217extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
218@interface CIContext: NSObject {
219}
220- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r;
221- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r     format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs;
222- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d;
223@end extern NSString* const QCRendererEventKey;
224@protocol QCCompositionRenderer - (NSDictionary*) attributes;
225@end   @interface QCRenderer : NSObject <QCCompositionRenderer> {
226}
227- (id) createSnapshotImageOfType:(NSString*)type;
228@end  extern NSString* const QCViewDidStartRenderingNotification;
229@interface QCView : NSView <QCCompositionRenderer> {
230}
231- (id) createSnapshotImageOfType:(NSString*)type;
232@end    enum {
233ICEXIFOrientation1 = 1,     ICEXIFOrientation2 = 2,     ICEXIFOrientation3 = 3,     ICEXIFOrientation4 = 4,     ICEXIFOrientation5 = 5,     ICEXIFOrientation6 = 6,     ICEXIFOrientation7 = 7,     ICEXIFOrientation8 = 8, };
234@class ICDevice;
235@protocol ICDeviceDelegate <NSObject>  @required      - (void)didRemoveDevice:(ICDevice*)device;
236@end extern NSString *const ICScannerStatusWarmingUp;
237@class ICScannerDevice;
238@protocol ICScannerDeviceDelegate <ICDeviceDelegate>  @optional       - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
239@end
240
241typedef long unsigned int __darwin_size_t;
242typedef __darwin_size_t size_t;
243typedef unsigned long CFTypeID;
244struct CGPoint {
245  CGFloat x;
246  CGFloat y;
247};
248typedef struct CGPoint CGPoint;
249typedef struct CGGradient *CGGradientRef;
250typedef uint32_t CGGradientDrawingOptions;
251extern CFTypeID CGGradientGetTypeID(void);
252extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef
253  space, const CGFloat components[], const CGFloat locations[], size_t count);
254extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space,
255  CFArrayRef colors, const CGFloat locations[]);
256extern CGGradientRef CGGradientRetain(CGGradientRef gradient);
257extern void CGGradientRelease(CGGradientRef gradient);
258typedef struct CGContext *CGContextRef;
259extern void CGContextDrawLinearGradient(CGContextRef context,
260    CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint,
261    CGGradientDrawingOptions options);
262extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void);
263
264//===----------------------------------------------------------------------===//
265// Test cases.
266//===----------------------------------------------------------------------===//
267
268CFAbsoluteTime f1() {
269  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
270  CFDateRef date = CFDateCreate(0, t);
271  CFRetain(date);
272  CFRelease(date);
273  CFDateGetAbsoluteTime(date); // no-warning
274  CFRelease(date);
275  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released.}}
276  return t;
277}
278
279CFAbsoluteTime f2() {
280  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
281  CFDateRef date = CFDateCreate(0, t);  
282  [((NSDate*) date) retain];
283  CFRelease(date);
284  CFDateGetAbsoluteTime(date); // no-warning
285  [((NSDate*) date) release];
286  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released.}}
287  return t;
288}
289
290
291NSDate* global_x;
292
293// Test to see if we supresss an error when we store the pointer
294// to a global.
295
296CFAbsoluteTime f3() {
297  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
298  CFDateRef date = CFDateCreate(0, t);  
299  [((NSDate*) date) retain];
300  CFRelease(date);
301  CFDateGetAbsoluteTime(date); // no-warning
302  global_x = (NSDate*) date;  
303  [((NSDate*) date) release];
304  t = CFDateGetAbsoluteTime(date);   // no-warning
305  return t;
306}
307
308//---------------------------------------------------------------------------
309// Test case 'f4' differs for region store and basic store.  See
310// retain-release-region-store.m and retain-release-basic-store.m.
311//---------------------------------------------------------------------------
312
313// Test a leak.
314
315CFAbsoluteTime f5(int x) {  
316  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
317  CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}}
318  
319  if (x)
320    CFRelease(date);
321  
322  return t;
323}
324
325// Test a leak involving the return.
326
327CFDateRef f6(int x) {  
328  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  // expected-warning{{leak}}
329  CFRetain(date);
330  return date;
331}
332
333// Test a leak involving an overwrite.
334
335CFDateRef f7() {
336  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  //expected-warning{{leak}}
337  CFRetain(date);
338  date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
339  return date;
340}
341
342// Generalization of Create rule.  MyDateCreate returns a CFXXXTypeRef, and
343// has the word create.
344CFDateRef MyDateCreate();
345
346CFDateRef f8() {
347  CFDateRef date = MyDateCreate(); // expected-warning{{leak}}
348  CFRetain(date);  
349  return date;
350}
351
352CFDateRef f9() {
353  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
354  int *p = 0;
355  // When allocations fail, CFDateCreate can return null.
356  if (!date) *p = 1; // expected-warning{{null}}
357  return date;
358}
359
360// Handle DiskArbitration API:
361//
362// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
363//
364void f10(io_service_t media, DADiskRef d, CFStringRef s) {
365  DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}}
366  if (disk) NSLog(@"ok");
367  
368  disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}}
369  if (disk) NSLog(@"ok");
370
371  CFDictionaryRef dict = DADiskCopyDescription(d);  // expected-warning{{leak}}
372  if (dict) NSLog(@"ok"); 
373  
374  disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}}
375  if (disk) NSLog(@"ok");
376    
377  DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault,   // expected-warning{{leak}}
378                                                kDAReturnSuccess, s);
379  if (dissenter) NSLog(@"ok");
380  
381  DASessionRef session = DASessionCreate(kCFAllocatorDefault);  // expected-warning{{leak}}
382  if (session) NSLog(@"ok");
383}
384
385// Test retain/release checker with CFString and CFMutableArray.
386void f11() {
387  // Create the array.
388  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
389
390  // Create a string.
391  CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
392                                             kCFStringEncodingUTF8);
393
394  // Add the string to the array.
395  CFArrayAppendValue(A, s1);
396  
397  // Decrement the reference count.
398  CFRelease(s1); // no-warning
399  
400  // Get the string.  We don't own it.
401  s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
402  
403  // Release the array.
404  CFRelease(A); // no-warning
405  
406  // Release the string.  This is a bug.
407  CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
408}
409
410// PR 3337: Handle functions declared using typedefs.
411typedef CFTypeRef CREATEFUN();
412CREATEFUN MyCreateFun;
413
414void f12() {
415  CFTypeRef o = MyCreateFun(); // expected-warning {{leak}}
416}
417
418void f13_autorelease() {
419  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
420  [(id) A autorelease]; // no-warning
421}
422
423void f13_autorelease_b() {
424  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
425  [(id) A autorelease];
426  [(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}}
427}
428
429CFMutableArrayRef f13_autorelease_c() {
430  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
431  [(id) A autorelease];
432  [(id) A autorelease]; 
433  return A; // expected-warning{{Object sent -autorelease too many times}}
434}
435
436CFMutableArrayRef f13_autorelease_d() {
437  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
438  [(id) A autorelease];
439  [(id) A autorelease]; 
440  CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}}
441  CFRelease(B); // no-warning
442  while (1) {}
443}
444
445
446// This case exercises the logic where the leak site is the same as the allocation site.
447void f14_leakimmediately() {
448  CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}}
449}
450
451// Test that we track an allocated object beyond the point where the *name*
452// of the variable storing the reference is no longer live.
453void f15() {
454  // Create the array.
455  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
456  CFMutableArrayRef *B = &A;
457  // At this point, the name 'A' is no longer live.
458  CFRelease(*B);  // no-warning
459}
460
461// Test when we pass NULL to CFRetain/CFRelease.
462void f16(int x, CFTypeRef p) {
463  if (p)
464    return;
465
466  if (x) {
467    CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}}
468  }
469  else {
470    CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}}
471  }
472}
473
474// Test that an object is non-null after being CFRetained/CFReleased.
475void f17(int x, CFTypeRef p) {
476  if (x) {
477    CFRelease(p);
478    if (!p)
479      CFRelease(0); // no-warning
480  }
481  else {
482    CFRetain(p);
483    if (!p)
484      CFRetain(0); // no-warning
485  }
486}
487
488// Test basic tracking of ivars associated with 'self'.  For the retain/release
489// checker we currently do not want to flag leaks associated with stores
490// of tracked objects to ivars.
491@interface SelfIvarTest : NSObject {
492  id myObj;
493}
494- (void)test_self_tracking;
495@end
496
497@implementation SelfIvarTest
498- (void)test_self_tracking {
499  myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
500}
501@end
502
503// Test return of non-owned objects in contexts where an owned object
504// is expected.
505@interface TestReturnNotOwnedWhenExpectedOwned
506- (NSString*)newString;
507@end
508
509@implementation TestReturnNotOwnedWhenExpectedOwned
510- (NSString*)newString {
511  NSString *s = [NSString stringWithUTF8String:"hello"];
512  return s; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
513}
514@end
515
516// <rdar://problem/6659160>
517int isFoo(char c);
518
519static void rdar_6659160(char *inkind, char *inname)
520{
521  // We currently expect that [NSObject alloc] cannot fail.  This
522  // will be a toggled flag in the future.  It can indeed return null, but
523  // Cocoa programmers generally aren't expected to reason about out-of-memory
524  // conditions.
525  NSString *kind = [[NSString alloc] initWithUTF8String:inkind];  // expected-warning{{leak}}
526  
527  // We do allow stringWithUTF8String to fail.  This isn't really correct, as
528  // far as returning 0.  In most error conditions it will throw an exception.
529  // If allocation fails it could return 0, but again this
530  // isn't expected.
531  NSString *name = [NSString stringWithUTF8String:inname];
532  if(!name)
533    return;
534
535  const char *kindC = 0;
536  const char *nameC = 0;
537  
538  // In both cases, we cannot reach a point down below where we
539  // dereference kindC or nameC with either being null.  This is because
540  // we assume that [NSObject alloc] doesn't fail and that we have the guard
541  // up above.
542  
543  if(kind)
544    kindC = [kind UTF8String];
545  if(name)
546    nameC = [name UTF8String];
547  if(!isFoo(kindC[0])) // expected-warning{{null}}
548    return;
549  if(!isFoo(nameC[0])) // no-warning
550    return;
551
552  [kind release];
553  [name release]; // expected-warning{{Incorrect decrement of the reference count}}
554}
555
556// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming
557//  conventions with respect to 'return'ing ownership.
558@interface PR3677: NSObject @end
559@implementation PR3677
560+ (id)allocWithZone:(NSZone *)inZone {
561  return [super allocWithZone:inZone];  // no-warning
562}
563@end
564
565// PR 3820 - Reason about calls to -dealloc
566void pr3820_DeallocInsteadOfRelease(void)
567{
568  id foo = [[NSString alloc] init]; // no-warning
569  [foo dealloc];
570  // foo is not leaked, since it has been deallocated.
571}
572
573void pr3820_ReleaseAfterDealloc(void)
574{
575  id foo = [[NSString alloc] init];
576  [foo dealloc];
577  [foo release];  // expected-warning{{used after it is release}}
578  // NSInternalInconsistencyException: message sent to deallocated object
579}
580
581void pr3820_DeallocAfterRelease(void)
582{
583  NSLog(@"\n\n[%s]", __FUNCTION__);
584  id foo = [[NSString alloc] init];
585  [foo release];
586  [foo dealloc]; // expected-warning{{used after it is released}}
587  // message sent to released object
588}
589
590// From <rdar://problem/6704930>.  The problem here is that 'length' binds to
591// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to
592// reason about '($0 - 1) > constant'.  As a temporary hack, we drop the value
593// of '($0 - 1)' and conjure a new symbol.
594void rdar6704930(unsigned char *s, unsigned int length) {
595  NSString* name = 0;
596  if (s != 0) {
597    if (length > 0) {
598      while (length > 0) {
599        if (*s == ':') {
600          ++s;
601          --length;
602          name = [[NSString alloc] init]; // no-warning
603          break;
604        }
605        ++s;
606        --length;
607      }
608      if ((length == 0) && (name != 0)) {
609        [name release];
610        name = 0;
611      }
612      if (length == 0) { // no ':' found -> use it all as name
613        name = [[NSString alloc] init]; // no-warning
614      }
615    }
616  }
617
618  if (name != 0) {
619    [name release];
620  }
621}
622
623//===----------------------------------------------------------------------===//
624// <rdar://problem/6833332>
625// One build of the analyzer accidentally stopped tracking the allocated
626// object after the 'retain'.
627//===----------------------------------------------------------------------===//
628
629@interface rdar_6833332 : NSObject <NSApplicationDelegate> {
630    NSWindow *window;
631}
632@property (nonatomic, retain) NSWindow *window;
633@end
634
635@implementation rdar_6833332
636@synthesize window;
637- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
638 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}}
639
640 [dict setObject:@"foo" forKey:@"bar"];
641
642 NSLog(@"%@", dict);
643}
644- (void)dealloc {
645    [window release];
646    [super dealloc];
647}
648@end
649
650//===----------------------------------------------------------------------===//
651// <rdar://problem/6257780> clang checker fails to catch use-after-release
652//===----------------------------------------------------------------------===//
653                                 
654int rdar_6257780_Case1() {
655  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
656  NSArray *array = [NSArray array];
657  [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
658  [pool drain];
659  return 0;
660}
661
662//===----------------------------------------------------------------------===//
663// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs
664//===----------------------------------------------------------------------===//
665
666void rdar_6866843() {
667 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
668 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];
669 NSArray* array = [[NSArray alloc] init];
670 [dictionary setObject:array forKey:@"key"];
671 [array release];
672 // Using 'array' here should be fine
673 NSLog(@"array = %@\n", array); // no-warning
674 // Now the array is released
675 [dictionary release];
676 [pool drain];
677}
678
679
680//===----------------------------------------------------------------------===//
681// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects
682//===----------------------------------------------------------------------===//
683
684typedef CFTypeRef OtherRef;
685
686@interface RDar6877235 : NSObject {}
687- (CFTypeRef)_copyCFTypeRef;
688- (OtherRef)_copyOtherRef;
689@end
690
691@implementation RDar6877235
692- (CFTypeRef)_copyCFTypeRef {
693  return [[NSString alloc] init]; // no-warning
694}
695- (OtherRef)_copyOtherRef {
696  return [[NSString alloc] init]; // no-warning
697}
698@end
699
700//===----------------------------------------------------------------------===//
701//<rdar://problem/6320065> false positive - init method returns an object
702// owned by caller
703//===----------------------------------------------------------------------===//
704
705@interface RDar6320065 : NSObject {
706  NSString *_foo;
707}
708- (id)initReturningNewClass;
709- (id)_initReturningNewClassBad;
710- (id)initReturningNewClassBad2;
711@end
712
713@interface RDar6320065Subclass : RDar6320065
714@end
715
716@implementation RDar6320065
717- (id)initReturningNewClass {
718  [self release];
719  self = [[RDar6320065Subclass alloc] init]; // no-warning
720  return self;
721}
722- (id)_initReturningNewClassBad {
723  [self release];
724  [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}}
725  return self;
726}
727- (id)initReturningNewClassBad2 {
728  [self release];
729  self = [[RDar6320065Subclass alloc] init];
730  return [self autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
731}
732
733@end
734
735@implementation RDar6320065Subclass
736@end
737
738int RDar6320065_test() {
739  RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning
740  [test release];
741  return 0;
742}
743
744//===----------------------------------------------------------------------===//
745// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 
746//  and claims the receiver
747//===----------------------------------------------------------------------===//
748
749@interface RDar7129086 : NSObject {} @end
750@implementation RDar7129086
751- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder {
752  [self release]; // no-warning
753  return [NSString alloc];  // no-warning
754}
755@end
756
757//===----------------------------------------------------------------------===//
758// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a
759//  retained object
760//===----------------------------------------------------------------------===//
761
762@interface RDar6859457 : NSObject {}
763- (NSString*) NoCopyString;
764- (NSString*) noCopyString;
765@end
766
767@implementation RDar6859457 
768- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
769- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
770@end
771
772void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) {
773  [x NoCopyString]; // no-warning
774  [x noCopyString]; // no-warning
775  [NSData dataWithBytesNoCopy:bytes length:dataLength];  // no-warning
776  [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning
777}
778
779//===----------------------------------------------------------------------===//
780// PR 4230 - an autorelease pool is not necessarily leaked during a premature
781//  return
782//===----------------------------------------------------------------------===//
783
784static void PR4230(void)
785{
786  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning
787  NSString *object = [[[NSString alloc] init] autorelease]; // no-warning
788  return;
789}
790
791//===----------------------------------------------------------------------===//
792// Method name that has a null IdentifierInfo* for its first selector slot.
793// This test just makes sure that we handle it.
794//===----------------------------------------------------------------------===//
795
796@interface TestNullIdentifier
797@end
798
799@implementation TestNullIdentifier
800+ (id):(int)x, ... {
801  return [[NSString alloc] init]; // expected-warning{{leak}}
802}
803@end
804
805//===----------------------------------------------------------------------===//
806// <rdar://problem/6893565> don't flag leaks for return types that cannot be 
807//                          determined to be CF types
808//===----------------------------------------------------------------------===//
809
810// We don't know if 'struct s6893565' represents a Core Foundation type, so
811// we shouldn't emit an error here.
812typedef struct s6893565* TD6893565;
813
814@interface RDar6893565 {}
815-(TD6893565)newThing;
816@end
817
818@implementation RDar6893565
819-(TD6893565)newThing {  
820  return (TD6893565) [[NSString alloc] init]; // no-warning
821}
822@end
823
824//===----------------------------------------------------------------------===//
825// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods
826//===----------------------------------------------------------------------===//
827
828void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context,
829                 NSString *str, CIImage *img, CGRect rect,
830                 CIFormat form, CGColorSpaceRef cs) {
831  [view createSnapshotImageOfType:str]; // expected-warning{{leak}}
832  [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}}
833  [context createCGImage:img fromRect:rect]; // expected-warning{{leak}}
834  [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}}
835}
836
837//===----------------------------------------------------------------------===//
838// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:]
839//                           misinterpreted by clang scan-build
840//===----------------------------------------------------------------------===//
841
842void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) {
843  [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}}
844}
845
846//===----------------------------------------------------------------------===//
847// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 
848//                          checker
849//===----------------------------------------------------------------------===//
850
851void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options,  const char * bsdName) {  
852  IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}}
853}
854
855void IOServiceMatching_wrapper(const char * name) {
856  IOServiceMatching(name); // expected-warning{{leak}}
857}
858
859void IOServiceNameMatching_wrapper(const char * name) {
860  IOServiceNameMatching(name); // expected-warning{{leak}}
861}
862
863CF_RETURNS_RETAINED CFDictionaryRef CreateDict();
864
865void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType,
866  mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) {
867
868  CFDictionaryRef matching = CreateDict();
869  CFRelease(matching);
870  IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}}
871                           wakePort, reference, notification);
872}
873
874void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) {
875  IORegistryEntryIDMatching(entryID); // expected-warning{{leak}}
876}
877
878void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options,
879                                        const char * path) {
880  IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}}
881}
882
883void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) {
884  CFDictionaryRef matching = CreateDict();
885  IOServiceGetMatchingService(masterPort, matching);
886  CFRelease(matching); // expected-warning{{used after it is released}}
887}
888
889void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) {
890  CFDictionaryRef matching = CreateDict();
891  IOServiceGetMatchingServices(masterPort, matching, existing);
892  CFRelease(matching); // expected-warning{{used after it is released}}
893}
894
895void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 
896  IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) {
897    
898  CFDictionaryRef matching = CreateDict();
899  IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification);
900  CFRelease(matching); // expected-warning{{used after it is released}}
901}
902
903//===----------------------------------------------------------------------===//
904// Test of handling objects whose references "escape" to containers.
905//===----------------------------------------------------------------------===//
906
907void CFDictionaryAddValue();
908
909// <rdar://problem/6539791>
910void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) {
911  CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
912  CFDictionaryAddValue(y, key, x);
913  CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet
914  signed z = 1;
915  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
916  if (value) {
917    CFDictionaryAddValue(x, val_key, value); // no-warning
918    CFRelease(value);
919    CFDictionaryAddValue(y, val_key, value); // no-warning
920  }
921}
922
923// <rdar://problem/6560661>
924// Same issue, except with "AppendValue" functions.
925void rdar_6560661(CFMutableArrayRef x) {
926  signed z = 1;
927  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
928  // CFArrayAppendValue keeps a reference to value.
929  CFArrayAppendValue(x, value);
930  CFRelease(value);
931  CFRetain(value);
932  CFRelease(value); // no-warning
933}
934
935// <rdar://problem/7152619>
936// Same issue, excwept with "CFAttributeStringSetAttribute".
937void rdar_7152619(CFStringRef str) {
938  CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0);
939  CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string);
940  CFRelease(string);
941  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
942  CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number);
943  [number release];
944  [number retain];
945  CFRelease(attrString);  
946}
947
948//===----------------------------------------------------------------------===//
949// Test of handling CGGradientXXX functions.
950//===----------------------------------------------------------------------===//
951
952void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
953                  CGPoint myEndPoint) {
954  size_t num_locations = 6;
955  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
956  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
957     x,  // Start color
958    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
959    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
960    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
961    255.0/255.0,255.0/255.0, 255.0/255.0, x,
962    255.0/255.0,255.0/255.0, 255.0/255.0, x
963  }; // End color
964  
965  CGGradientRef myGradient =
966    CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}}
967      components, locations, num_locations);
968
969  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
970                              0);
971  CGGradientRelease(myGradient);
972}
973
974void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
975                  CGPoint myEndPoint) {
976  size_t num_locations = 6;
977  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
978  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
979     x,  // Start color
980    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
981    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
982    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
983    255.0/255.0,255.0/255.0, 255.0/255.0, x,
984    255.0/255.0,255.0/255.0, 255.0/255.0, x
985  }; // End color
986  
987  CGGradientRef myGradient =
988   CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}}
989
990  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
991                              0);
992}
993
994//===----------------------------------------------------------------------===//
995// <rdar://problem/7299394> clang false positive: retained instance passed to
996//                          thread in pthread_create marked as leak
997//
998// Until we have full IPA, the analyzer should stop tracking the reference
999// count of objects passed to pthread_create.
1000//
1001//===----------------------------------------------------------------------===//
1002
1003struct _opaque_pthread_t {};
1004struct _opaque_pthread_attr_t {};
1005typedef struct _opaque_pthread_t *__darwin_pthread_t;
1006typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
1007typedef __darwin_pthread_t pthread_t;
1008typedef __darwin_pthread_attr_t pthread_attr_t;
1009
1010int pthread_create(pthread_t * restrict, const pthread_attr_t * restrict,
1011                   void *(*)(void *), void * restrict);
1012
1013void *rdar_7299394_start_routine(void *p) {
1014  [((id) p) release];
1015  return 0;
1016}
1017void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) {
1018  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1019  pthread_create(thread, attr, rdar_7299394_start_routine, number);
1020}
1021void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) {
1022  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1023}
1024
1025//===----------------------------------------------------------------------===//
1026// <rdar://problem/7283567> False leak associated with call to 
1027//                          CVPixelBufferCreateWithBytes ()
1028//
1029// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and
1030// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the
1031// pixel buffer object.  These test cases show how the analyzer stops tracking
1032// the reference count for the objects passed for this argument.  This
1033// could be made smarter.
1034//===----------------------------------------------------------------------===//
1035
1036typedef int int32_t;
1037typedef UInt32 FourCharCode;
1038typedef FourCharCode OSType;
1039typedef uint64_t CVOptionFlags;
1040typedef int32_t CVReturn;
1041typedef struct __CVBuffer *CVBufferRef;
1042typedef CVBufferRef CVImageBufferRef;
1043typedef CVImageBufferRef CVPixelBufferRef;
1044typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress );
1045
1046extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1047            size_t width,
1048            size_t height,
1049            OSType pixelFormatType,
1050            void *baseAddress,
1051            size_t bytesPerRow,
1052            CVPixelBufferReleaseBytesCallback releaseCallback,
1053            void *releaseRefCon,
1054            CFDictionaryRef pixelBufferAttributes,
1055                   CVPixelBufferRef *pixelBufferOut) ;
1056
1057typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] );
1058
1059extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator,
1060        size_t width,
1061        size_t height,
1062        OSType pixelFormatType,
1063        void *dataPtr,
1064        size_t dataSize,
1065        size_t numberOfPlanes,
1066        void *planeBaseAddress[],
1067        size_t planeWidth[],
1068        size_t planeHeight[],
1069        size_t planeBytesPerRow[],
1070        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1071        void *releaseRefCon,
1072        CFDictionaryRef pixelBufferAttributes,
1073        CVPixelBufferRef *pixelBufferOut) ;
1074
1075extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1076            size_t width,
1077            size_t height,
1078            OSType pixelFormatType,
1079            void *baseAddress,
1080            size_t bytesPerRow,
1081            CVPixelBufferReleaseBytesCallback releaseCallback,
1082            void *releaseRefCon,
1083            CFDictionaryRef pixelBufferAttributes,
1084                   CVPixelBufferRef *pixelBufferOut) ;
1085
1086CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height,
1087                      OSType pixelFormatType, void *baseAddress,
1088                      size_t bytesPerRow,
1089                      CVPixelBufferReleaseBytesCallback releaseCallback,
1090                      CFDictionaryRef pixelBufferAttributes,
1091                      CVPixelBufferRef *pixelBufferOut) {
1092
1093  // For the allocated object, it doesn't really matter what type it is
1094  // for the purpose of this test.  All we want to show is that
1095  // this is freed later by the callback.
1096  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1097  
1098  return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType,
1099                                baseAddress, bytesPerRow, releaseCallback,
1100                                number, // potentially released by callback
1101                                pixelBufferAttributes, pixelBufferOut) ;
1102}
1103
1104CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height,
1105        OSType pixelFormatType, void *dataPtr, size_t dataSize,
1106        size_t numberOfPlanes, void *planeBaseAddress[],
1107        size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[],
1108        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1109        CFDictionaryRef pixelBufferAttributes,
1110        CVPixelBufferRef *pixelBufferOut) {
1111    
1112    // For the allocated object, it doesn't really matter what type it is
1113    // for the purpose of this test.  All we want to show is that
1114    // this is freed later by the callback.
1115    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1116
1117    return CVPixelBufferCreateWithPlanarBytes(allocator,
1118              width, height, pixelFormatType, dataPtr, dataSize,
1119              numberOfPlanes, planeBaseAddress, planeWidth,
1120              planeHeight, planeBytesPerRow, releaseCallback,
1121              number, // potentially released by callback
1122              pixelBufferAttributes, pixelBufferOut) ;
1123}
1124
1125//===----------------------------------------------------------------------===//
1126// <rdar://problem/7358899> False leak associated with 
1127//  CGBitmapContextCreateWithData
1128//===----------------------------------------------------------------------===//
1129typedef uint32_t CGBitmapInfo;
1130typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data);
1131    
1132CGContextRef CGBitmapContextCreateWithData(void *data,
1133    size_t width, size_t height, size_t bitsPerComponent,
1134    size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1135    CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo);
1136
1137void rdar_7358899(void *data,
1138      size_t width, size_t height, size_t bitsPerComponent,
1139      size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1140      CGBitmapContextReleaseDataCallback releaseCallback) {
1141
1142    // For the allocated object, it doesn't really matter what type it is
1143    // for the purpose of this test.  All we want to show is that
1144    // this is freed later by the callback.
1145    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1146
1147  CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}}
1148    bytesPerRow, space, bitmapInfo, releaseCallback, number);
1149}
1150
1151//===----------------------------------------------------------------------===//
1152// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to
1153//  start before '_' when determining Cocoa fundamental rule
1154//
1155// Previously the retain/release checker just skipped prefixes before the
1156// first '_' entirely.  Now the checker honors the prefix if it results in a
1157// recognizable naming convention (e.g., 'new', 'init').
1158//===----------------------------------------------------------------------===//
1159
1160@interface RDar7265711 {}
1161- (id) new_stuff;
1162@end
1163
1164void rdar7265711_a(RDar7265711 *x) {
1165  id y = [x new_stuff]; // expected-warning{{leak}}
1166}
1167
1168void rdar7265711_b(RDar7265711 *x) {
1169  id y = [x new_stuff]; // no-warning
1170  [y release];
1171}
1172
1173//===----------------------------------------------------------------------===//
1174// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a
1175//                          retained reference
1176//===----------------------------------------------------------------------===//
1177
1178@interface NSCursor : NSObject
1179+ (NSCursor *)dragCopyCursor;
1180@end
1181
1182void rdar7306898(void) {
1183  // 'dragCopyCursor' does not follow Cocoa's fundamental rule.  It is a noun, not an sentence
1184  // implying a 'copy' of something.
1185  NSCursor *c =  [NSCursor dragCopyCursor]; // no-warning
1186  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1187}
1188
1189//===----------------------------------------------------------------------===//
1190// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class
1191// directly is not likely what the user intended
1192//===----------------------------------------------------------------------===//
1193
1194@interface RDar7252064 : NSObject @end
1195void rdar7252064(void) {
1196  [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1197  [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1198  [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1199  [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}}
1200}
1201
1202//===----------------------------------------------------------------------===//
1203// Tests of ownership attributes.
1204//===----------------------------------------------------------------------===//
1205
1206typedef NSString* MyStringTy;
1207
1208@protocol FooP;
1209
1210@interface TestOwnershipAttr : NSObject
1211- (NSString*) returnsAnOwnedString  NS_RETURNS_RETAINED; // no-warning
1212- (NSString*) returnsAnOwnedCFString  CF_RETURNS_RETAINED; // no-warning
1213- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning
1214- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning
1215- (NSString*) newStringNoAttr;
1216- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}}
1217- (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED;
1218@end
1219
1220static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions and methods}}
1221
1222void test_attr_1(TestOwnershipAttr *X) {
1223  NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}}
1224}
1225
1226void test_attr_1b(TestOwnershipAttr *X) {
1227  NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}}
1228}
1229
1230void test_attr1c(TestOwnershipAttr *X) {
1231  NSString *str = [X newString]; // no-warning
1232  NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}}
1233}
1234
1235void testattr2_a() {
1236  TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}}
1237}
1238
1239void testattr2_b() {
1240  TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit];  // expected-warning{{leak}}
1241}
1242
1243void testattr2_c() {
1244  TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning
1245  [x release];
1246}
1247
1248@interface MyClassTestCFAttr : NSObject {}
1249- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED;
1250- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED;
1251- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED;
1252- (CFDateRef) newCFRetainedAsCFNoAttr;
1253- (NSDate*) alsoReturnsRetained;
1254- (CFDateRef) alsoReturnsRetainedAsCF;
1255- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED;
1256@end
1257
1258CF_RETURNS_RETAINED
1259CFDateRef returnsRetainedCFDate()  {
1260  return CFDateCreate(0, CFAbsoluteTimeGetCurrent());
1261}
1262
1263@implementation MyClassTestCFAttr
1264- (NSDate*) returnsCFRetained {
1265  return (NSDate*) returnsRetainedCFDate(); // No leak.
1266}
1267
1268- (CFDateRef) returnsCFRetainedAsCF {
1269  return returnsRetainedCFDate(); // No leak.
1270}
1271
1272- (CFDateRef) newCFRetainedAsCF {
1273  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease];
1274}
1275
1276- (CFDateRef) newCFRetainedAsCFNoAttr {
1277  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
1278}
1279
1280- (NSDate*) alsoReturnsRetained {
1281  return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}}
1282}
1283
1284- (CFDateRef) alsoReturnsRetainedAsCF {
1285  return returnsRetainedCFDate(); // expected-warning{{leak}}
1286}
1287
1288
1289- (NSDate*) returnsNSRetained {
1290  return (NSDate*) returnsRetainedCFDate(); // no-warning
1291}
1292@end
1293
1294//===----------------------------------------------------------------------===//
1295// Test that leaks post-dominated by "panic" functions are not reported.
1296//
1297// <rdar://problem/5905851> do not report a leak when post-dominated by a call
1298// to a noreturn or panic function
1299//===----------------------------------------------------------------------===//
1300
1301void panic() __attribute__((noreturn));
1302void panic_not_in_hardcoded_list() __attribute__((noreturn));
1303
1304void test_panic_negative() {
1305  signed z = 1;
1306  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);  // expected-warning{{leak}}
1307}
1308
1309void test_panic_positive() {
1310  signed z = 1;
1311  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1312  panic();
1313}
1314
1315void test_panic_neg_2(int x) {
1316  signed z = 1;
1317  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}}
1318  if (x)
1319    panic();
1320}
1321
1322void test_panic_pos_2(int x) {
1323  signed z = 1;
1324  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1325  if (x)
1326    panic();
1327  if (!x) {
1328    // This showed up in <rdar://problem/7796563>, where we silently missed checking
1329    // the function type for noreturn.  "panic()" is a hard-coded known panic function
1330    // that isn't always noreturn.
1331    panic_not_in_hardcoded_list();
1332  }
1333}
1334
1335//===----------------------------------------------------------------------===//
1336// Test uses of blocks (closures)
1337//===----------------------------------------------------------------------===//
1338
1339void test_blocks_1_pos(void) {
1340  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1341  ^{}();
1342}
1343
1344void test_blocks_1_indirect_release(void) {
1345  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1346  ^{ [number release]; }();
1347}
1348
1349void test_blocks_1_indirect_retain(void) {
1350  // Eventually this should be reported as a leak.
1351  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1352  ^{ [number retain]; }();
1353}
1354
1355void test_blocks_1_indirect_release_via_call(void) {
1356  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1357  ^(NSObject *o){ [o release]; }(number);
1358}
1359
1360void test_blocks_1_indirect_retain_via_call(void) {
1361  // Eventually this should be reported as a leak.
1362  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1363  ^(NSObject *o){ [o retain]; }(number);
1364}
1365
1366//===--------------------------------------------------------------------===//
1367// Test sending message to super that returns an object alias.  Previously
1368// this caused a crash in the analyzer.
1369//===--------------------------------------------------------------------===//
1370
1371@interface Rdar8015556 : NSObject {} @end
1372@implementation Rdar8015556
1373- (id)retain {
1374  return [super retain];
1375}
1376@end
1377
1378// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions
1379// detector.
1380
1381@protocol Prot_R8272168 @end
1382Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168();
1383void r8272168() {
1384  GetAClassThatImplementsProt_R8272168();
1385}
1386
1387// Test case for <rdar://problem/8356342>, which in the past triggered
1388// a false positive.
1389@interface RDar8356342
1390- (NSDate*) rdar8356342:(NSDate *)inValue;
1391@end
1392
1393@implementation RDar8356342
1394- (NSDate*) rdar8356342:(NSDate*)inValue {
1395  NSDate *outValue = inValue;
1396  if (outValue == 0)
1397    outValue = [[NSDate alloc] init]; // no-warning
1398
1399  if (outValue != inValue)
1400    [outValue autorelease];
1401
1402  return outValue;
1403}
1404@end
1405
1406// <rdar://problem/8724287> - This test case previously crashed because
1407// of a bug in BugReporter.
1408extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key);
1409typedef struct __CFError * CFErrorRef;
1410extern const CFStringRef kCFErrorUnderlyingErrorKey;
1411extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err);
1412
1413static void rdar_8724287(CFErrorRef error)
1414{
1415    CFErrorRef error_to_dump;
1416
1417    error_to_dump = error;
1418    while (error_to_dump != ((void*)0)) {
1419        CFDictionaryRef info;
1420
1421        info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object allocated on line 1421 and stored into 'info'}}
1422
1423        if (info != ((void*)0)) {
1424        }
1425
1426        error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey);
1427    }
1428}
1429
1430