retain-release.m revision d7a31ba6db617e38bb064df0ab09dbd41cdfed18 
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 that an object is non-null after being CFRetained/CFReleased.
472void f17(int x, CFTypeRef p) {
473  if (x) {
474    CFRelease(p);
475    if (!p)
476      CFRelease(0); // no-warning
477  }
478  else {
479    CFRetain(p);
480    if (!p)
481      CFRetain(0); // no-warning
482  }
483}
484
485// Test basic tracking of ivars associated with 'self'.  For the retain/release
486// checker we currently do not want to flag leaks associated with stores
487// of tracked objects to ivars.
488@interface SelfIvarTest : NSObject {
489  id myObj;
490}
491- (void)test_self_tracking;
492@end
493
494@implementation SelfIvarTest
495- (void)test_self_tracking {
496  myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
497}
498@end
499
500// Test return of non-owned objects in contexts where an owned object
501// is expected.
502@interface TestReturnNotOwnedWhenExpectedOwned
503- (NSString*)newString;
504@end
505
506@implementation TestReturnNotOwnedWhenExpectedOwned
507- (NSString*)newString {
508  NSString *s = [NSString stringWithUTF8String:"hello"];
509  return s; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
510}
511@end
512
513// <rdar://problem/6659160>
514int isFoo(char c);
515
516static void rdar_6659160(char *inkind, char *inname)
517{
518  // We currently expect that [NSObject alloc] cannot fail.  This
519  // will be a toggled flag in the future.  It can indeed return null, but
520  // Cocoa programmers generally aren't expected to reason about out-of-memory
521  // conditions.
522  NSString *kind = [[NSString alloc] initWithUTF8String:inkind];  // expected-warning{{leak}}
523  
524  // We do allow stringWithUTF8String to fail.  This isn't really correct, as
525  // far as returning 0.  In most error conditions it will throw an exception.
526  // If allocation fails it could return 0, but again this
527  // isn't expected.
528  NSString *name = [NSString stringWithUTF8String:inname];
529  if(!name)
530    return;
531
532  const char *kindC = 0;
533  const char *nameC = 0;
534  
535  // In both cases, we cannot reach a point down below where we
536  // dereference kindC or nameC with either being null.  This is because
537  // we assume that [NSObject alloc] doesn't fail and that we have the guard
538  // up above.
539  
540  if(kind)
541    kindC = [kind UTF8String];
542  if(name)
543    nameC = [name UTF8String];
544  if(!isFoo(kindC[0])) // expected-warning{{null}}
545    return;
546  if(!isFoo(nameC[0])) // no-warning
547    return;
548
549  [kind release];
550  [name release]; // expected-warning{{Incorrect decrement of the reference count}}
551}
552
553// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming
554//  conventions with respect to 'return'ing ownership.
555@interface PR3677: NSObject @end
556@implementation PR3677
557+ (id)allocWithZone:(NSZone *)inZone {
558  return [super allocWithZone:inZone];  // no-warning
559}
560@end
561
562// PR 3820 - Reason about calls to -dealloc
563void pr3820_DeallocInsteadOfRelease(void)
564{
565  id foo = [[NSString alloc] init]; // no-warning
566  [foo dealloc];
567  // foo is not leaked, since it has been deallocated.
568}
569
570void pr3820_ReleaseAfterDealloc(void)
571{
572  id foo = [[NSString alloc] init];
573  [foo dealloc];
574  [foo release];  // expected-warning{{used after it is release}}
575  // NSInternalInconsistencyException: message sent to deallocated object
576}
577
578void pr3820_DeallocAfterRelease(void)
579{
580  NSLog(@"\n\n[%s]", __FUNCTION__);
581  id foo = [[NSString alloc] init];
582  [foo release];
583  [foo dealloc]; // expected-warning{{used after it is released}}
584  // message sent to released object
585}
586
587// From <rdar://problem/6704930>.  The problem here is that 'length' binds to
588// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to
589// reason about '($0 - 1) > constant'.  As a temporary hack, we drop the value
590// of '($0 - 1)' and conjure a new symbol.
591void rdar6704930(unsigned char *s, unsigned int length) {
592  NSString* name = 0;
593  if (s != 0) {
594    if (length > 0) {
595      while (length > 0) {
596        if (*s == ':') {
597          ++s;
598          --length;
599          name = [[NSString alloc] init]; // no-warning
600          break;
601        }
602        ++s;
603        --length;
604      }
605      if ((length == 0) && (name != 0)) {
606        [name release];
607        name = 0;
608      }
609      if (length == 0) { // no ':' found -> use it all as name
610        name = [[NSString alloc] init]; // no-warning
611      }
612    }
613  }
614
615  if (name != 0) {
616    [name release];
617  }
618}
619
620//===----------------------------------------------------------------------===//
621// <rdar://problem/6833332>
622// One build of the analyzer accidentally stopped tracking the allocated
623// object after the 'retain'.
624//===----------------------------------------------------------------------===//
625
626@interface rdar_6833332 : NSObject <NSApplicationDelegate> {
627    NSWindow *window;
628}
629@property (nonatomic, retain) NSWindow *window;
630@end
631
632@implementation rdar_6833332
633@synthesize window;
634- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
635 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}}
636
637 [dict setObject:@"foo" forKey:@"bar"];
638
639 NSLog(@"%@", dict);
640}
641- (void)dealloc {
642    [window release];
643    [super dealloc];
644}
645@end
646
647//===----------------------------------------------------------------------===//
648// <rdar://problem/6257780> clang checker fails to catch use-after-release
649//===----------------------------------------------------------------------===//
650                                 
651int rdar_6257780_Case1() {
652  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
653  NSArray *array = [NSArray array];
654  [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
655  [pool drain];
656  return 0;
657}
658
659//===----------------------------------------------------------------------===//
660// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs
661//===----------------------------------------------------------------------===//
662
663void rdar_6866843() {
664 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
665 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];
666 NSArray* array = [[NSArray alloc] init];
667 [dictionary setObject:array forKey:@"key"];
668 [array release];
669 // Using 'array' here should be fine
670 NSLog(@"array = %@\n", array); // no-warning
671 // Now the array is released
672 [dictionary release];
673 [pool drain];
674}
675
676
677//===----------------------------------------------------------------------===//
678// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects
679//===----------------------------------------------------------------------===//
680
681typedef CFTypeRef OtherRef;
682
683@interface RDar6877235 : NSObject {}
684- (CFTypeRef)_copyCFTypeRef;
685- (OtherRef)_copyOtherRef;
686@end
687
688@implementation RDar6877235
689- (CFTypeRef)_copyCFTypeRef {
690  return [[NSString alloc] init]; // no-warning
691}
692- (OtherRef)_copyOtherRef {
693  return [[NSString alloc] init]; // no-warning
694}
695@end
696
697//===----------------------------------------------------------------------===//
698//<rdar://problem/6320065> false positive - init method returns an object
699// owned by caller
700//===----------------------------------------------------------------------===//
701
702@interface RDar6320065 : NSObject {
703  NSString *_foo;
704}
705- (id)initReturningNewClass;
706- (id)_initReturningNewClassBad;
707- (id)initReturningNewClassBad2;
708@end
709
710@interface RDar6320065Subclass : RDar6320065
711@end
712
713@implementation RDar6320065
714- (id)initReturningNewClass {
715  [self release];
716  self = [[RDar6320065Subclass alloc] init]; // no-warning
717  return self;
718}
719- (id)_initReturningNewClassBad {
720  [self release];
721  [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}}
722  return self;
723}
724- (id)initReturningNewClassBad2 {
725  [self release];
726  self = [[RDar6320065Subclass alloc] init];
727  return [self autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
728}
729
730@end
731
732@implementation RDar6320065Subclass
733@end
734
735int RDar6320065_test() {
736  RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning
737  [test release];
738  return 0;
739}
740
741//===----------------------------------------------------------------------===//
742// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 
743//  and claims the receiver
744//===----------------------------------------------------------------------===//
745
746@interface RDar7129086 : NSObject {} @end
747@implementation RDar7129086
748- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder {
749  [self release]; // no-warning
750  return [NSString alloc];  // no-warning
751}
752@end
753
754//===----------------------------------------------------------------------===//
755// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a
756//  retained object
757//===----------------------------------------------------------------------===//
758
759@interface RDar6859457 : NSObject {}
760- (NSString*) NoCopyString;
761- (NSString*) noCopyString;
762@end
763
764@implementation RDar6859457 
765- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
766- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
767@end
768
769void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) {
770  [x NoCopyString]; // no-warning
771  [x noCopyString]; // no-warning
772  [NSData dataWithBytesNoCopy:bytes length:dataLength];  // no-warning
773  [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning
774}
775
776//===----------------------------------------------------------------------===//
777// PR 4230 - an autorelease pool is not necessarily leaked during a premature
778//  return
779//===----------------------------------------------------------------------===//
780
781static void PR4230(void)
782{
783  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning
784  NSString *object = [[[NSString alloc] init] autorelease]; // no-warning
785  return;
786}
787
788//===----------------------------------------------------------------------===//
789// Method name that has a null IdentifierInfo* for its first selector slot.
790// This test just makes sure that we handle it.
791//===----------------------------------------------------------------------===//
792
793@interface TestNullIdentifier
794@end
795
796@implementation TestNullIdentifier
797+ (id):(int)x, ... {
798  return [[NSString alloc] init]; // expected-warning{{leak}}
799}
800@end
801
802//===----------------------------------------------------------------------===//
803// <rdar://problem/6893565> don't flag leaks for return types that cannot be 
804//                          determined to be CF types
805//===----------------------------------------------------------------------===//
806
807// We don't know if 'struct s6893565' represents a Core Foundation type, so
808// we shouldn't emit an error here.
809typedef struct s6893565* TD6893565;
810
811@interface RDar6893565 {}
812-(TD6893565)newThing;
813@end
814
815@implementation RDar6893565
816-(TD6893565)newThing {  
817  return (TD6893565) [[NSString alloc] init]; // no-warning
818}
819@end
820
821//===----------------------------------------------------------------------===//
822// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods
823//===----------------------------------------------------------------------===//
824
825void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context,
826                 NSString *str, CIImage *img, CGRect rect,
827                 CIFormat form, CGColorSpaceRef cs) {
828  [view createSnapshotImageOfType:str]; // expected-warning{{leak}}
829  [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}}
830  [context createCGImage:img fromRect:rect]; // expected-warning{{leak}}
831  [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}}
832}
833
834//===----------------------------------------------------------------------===//
835// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:]
836//                           misinterpreted by clang scan-build
837//===----------------------------------------------------------------------===//
838
839void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) {
840  [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}}
841}
842
843//===----------------------------------------------------------------------===//
844// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 
845//                          checker
846//===----------------------------------------------------------------------===//
847
848void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options,  const char * bsdName) {  
849  IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}}
850}
851
852void IOServiceMatching_wrapper(const char * name) {
853  IOServiceMatching(name); // expected-warning{{leak}}
854}
855
856void IOServiceNameMatching_wrapper(const char * name) {
857  IOServiceNameMatching(name); // expected-warning{{leak}}
858}
859
860CF_RETURNS_RETAINED CFDictionaryRef CreateDict();
861
862void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType,
863  mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) {
864
865  CFDictionaryRef matching = CreateDict();
866  CFRelease(matching);
867  IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}}
868                           wakePort, reference, notification);
869}
870
871void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) {
872  IORegistryEntryIDMatching(entryID); // expected-warning{{leak}}
873}
874
875void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options,
876                                        const char * path) {
877  IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}}
878}
879
880void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) {
881  CFDictionaryRef matching = CreateDict();
882  IOServiceGetMatchingService(masterPort, matching);
883  CFRelease(matching); // expected-warning{{used after it is released}}
884}
885
886void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) {
887  CFDictionaryRef matching = CreateDict();
888  IOServiceGetMatchingServices(masterPort, matching, existing);
889  CFRelease(matching); // expected-warning{{used after it is released}}
890}
891
892void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 
893  IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) {
894    
895  CFDictionaryRef matching = CreateDict();
896  IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification);
897  CFRelease(matching); // expected-warning{{used after it is released}}
898}
899
900//===----------------------------------------------------------------------===//
901// Test of handling objects whose references "escape" to containers.
902//===----------------------------------------------------------------------===//
903
904void CFDictionaryAddValue();
905
906// <rdar://problem/6539791>
907void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) {
908  CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
909  CFDictionaryAddValue(y, key, x);
910  CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet
911  signed z = 1;
912  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
913  if (value) {
914    CFDictionaryAddValue(x, val_key, value); // no-warning
915    CFRelease(value);
916    CFDictionaryAddValue(y, val_key, value); // no-warning
917  }
918}
919
920// <rdar://problem/6560661>
921// Same issue, except with "AppendValue" functions.
922void rdar_6560661(CFMutableArrayRef x) {
923  signed z = 1;
924  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
925  // CFArrayAppendValue keeps a reference to value.
926  CFArrayAppendValue(x, value);
927  CFRelease(value);
928  CFRetain(value);
929  CFRelease(value); // no-warning
930}
931
932// <rdar://problem/7152619>
933// Same issue, excwept with "CFAttributeStringSetAttribute".
934void rdar_7152619(CFStringRef str) {
935  CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0);
936  CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string);
937  CFRelease(string);
938  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
939  CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number);
940  [number release];
941  [number retain];
942  CFRelease(attrString);  
943}
944
945//===----------------------------------------------------------------------===//
946// Test of handling CGGradientXXX functions.
947//===----------------------------------------------------------------------===//
948
949void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
950                  CGPoint myEndPoint) {
951  size_t num_locations = 6;
952  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
953  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
954     x,  // Start color
955    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
956    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
957    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
958    255.0/255.0,255.0/255.0, 255.0/255.0, x,
959    255.0/255.0,255.0/255.0, 255.0/255.0, x
960  }; // End color
961  
962  CGGradientRef myGradient =
963    CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}}
964      components, locations, num_locations);
965
966  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
967                              0);
968  CGGradientRelease(myGradient);
969}
970
971void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
972                  CGPoint myEndPoint) {
973  size_t num_locations = 6;
974  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
975  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
976     x,  // Start color
977    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
978    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
979    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
980    255.0/255.0,255.0/255.0, 255.0/255.0, x,
981    255.0/255.0,255.0/255.0, 255.0/255.0, x
982  }; // End color
983  
984  CGGradientRef myGradient =
985   CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}}
986
987  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
988                              0);
989}
990
991//===----------------------------------------------------------------------===//
992// <rdar://problem/7299394> clang false positive: retained instance passed to
993//                          thread in pthread_create marked as leak
994//
995// Until we have full IPA, the analyzer should stop tracking the reference
996// count of objects passed to pthread_create.
997//
998//===----------------------------------------------------------------------===//
999
1000struct _opaque_pthread_t {};
1001struct _opaque_pthread_attr_t {};
1002typedef struct _opaque_pthread_t *__darwin_pthread_t;
1003typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
1004typedef __darwin_pthread_t pthread_t;
1005typedef __darwin_pthread_attr_t pthread_attr_t;
1006
1007int pthread_create(pthread_t * restrict, const pthread_attr_t * restrict,
1008                   void *(*)(void *), void * restrict);
1009
1010void *rdar_7299394_start_routine(void *p) {
1011  [((id) p) release];
1012  return 0;
1013}
1014void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) {
1015  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1016  pthread_create(thread, attr, rdar_7299394_start_routine, number);
1017}
1018void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) {
1019  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1020}
1021
1022//===----------------------------------------------------------------------===//
1023// <rdar://problem/7283567> False leak associated with call to 
1024//                          CVPixelBufferCreateWithBytes ()
1025//
1026// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and
1027// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the
1028// pixel buffer object.  These test cases show how the analyzer stops tracking
1029// the reference count for the objects passed for this argument.  This
1030// could be made smarter.
1031//===----------------------------------------------------------------------===//
1032
1033typedef int int32_t;
1034typedef UInt32 FourCharCode;
1035typedef FourCharCode OSType;
1036typedef uint64_t CVOptionFlags;
1037typedef int32_t CVReturn;
1038typedef struct __CVBuffer *CVBufferRef;
1039typedef CVBufferRef CVImageBufferRef;
1040typedef CVImageBufferRef CVPixelBufferRef;
1041typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress );
1042
1043extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1044            size_t width,
1045            size_t height,
1046            OSType pixelFormatType,
1047            void *baseAddress,
1048            size_t bytesPerRow,
1049            CVPixelBufferReleaseBytesCallback releaseCallback,
1050            void *releaseRefCon,
1051            CFDictionaryRef pixelBufferAttributes,
1052                   CVPixelBufferRef *pixelBufferOut) ;
1053
1054typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] );
1055
1056extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator,
1057        size_t width,
1058        size_t height,
1059        OSType pixelFormatType,
1060        void *dataPtr,
1061        size_t dataSize,
1062        size_t numberOfPlanes,
1063        void *planeBaseAddress[],
1064        size_t planeWidth[],
1065        size_t planeHeight[],
1066        size_t planeBytesPerRow[],
1067        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1068        void *releaseRefCon,
1069        CFDictionaryRef pixelBufferAttributes,
1070        CVPixelBufferRef *pixelBufferOut) ;
1071
1072extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1073            size_t width,
1074            size_t height,
1075            OSType pixelFormatType,
1076            void *baseAddress,
1077            size_t bytesPerRow,
1078            CVPixelBufferReleaseBytesCallback releaseCallback,
1079            void *releaseRefCon,
1080            CFDictionaryRef pixelBufferAttributes,
1081                   CVPixelBufferRef *pixelBufferOut) ;
1082
1083CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height,
1084                      OSType pixelFormatType, void *baseAddress,
1085                      size_t bytesPerRow,
1086                      CVPixelBufferReleaseBytesCallback releaseCallback,
1087                      CFDictionaryRef pixelBufferAttributes,
1088                      CVPixelBufferRef *pixelBufferOut) {
1089
1090  // For the allocated object, it doesn't really matter what type it is
1091  // for the purpose of this test.  All we want to show is that
1092  // this is freed later by the callback.
1093  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1094  
1095  return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType,
1096                                baseAddress, bytesPerRow, releaseCallback,
1097                                number, // potentially released by callback
1098                                pixelBufferAttributes, pixelBufferOut) ;
1099}
1100
1101CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height,
1102        OSType pixelFormatType, void *dataPtr, size_t dataSize,
1103        size_t numberOfPlanes, void *planeBaseAddress[],
1104        size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[],
1105        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1106        CFDictionaryRef pixelBufferAttributes,
1107        CVPixelBufferRef *pixelBufferOut) {
1108    
1109    // For the allocated object, it doesn't really matter what type it is
1110    // for the purpose of this test.  All we want to show is that
1111    // this is freed later by the callback.
1112    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1113
1114    return CVPixelBufferCreateWithPlanarBytes(allocator,
1115              width, height, pixelFormatType, dataPtr, dataSize,
1116              numberOfPlanes, planeBaseAddress, planeWidth,
1117              planeHeight, planeBytesPerRow, releaseCallback,
1118              number, // potentially released by callback
1119              pixelBufferAttributes, pixelBufferOut) ;
1120}
1121
1122//===----------------------------------------------------------------------===//
1123// <rdar://problem/7358899> False leak associated with 
1124//  CGBitmapContextCreateWithData
1125//===----------------------------------------------------------------------===//
1126typedef uint32_t CGBitmapInfo;
1127typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data);
1128    
1129CGContextRef CGBitmapContextCreateWithData(void *data,
1130    size_t width, size_t height, size_t bitsPerComponent,
1131    size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1132    CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo);
1133
1134void rdar_7358899(void *data,
1135      size_t width, size_t height, size_t bitsPerComponent,
1136      size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1137      CGBitmapContextReleaseDataCallback releaseCallback) {
1138
1139    // For the allocated object, it doesn't really matter what type it is
1140    // for the purpose of this test.  All we want to show is that
1141    // this is freed later by the callback.
1142    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1143
1144  CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}}
1145    bytesPerRow, space, bitmapInfo, releaseCallback, number);
1146}
1147
1148//===----------------------------------------------------------------------===//
1149// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to
1150//  start before '_' when determining Cocoa fundamental rule
1151//
1152// Previously the retain/release checker just skipped prefixes before the
1153// first '_' entirely.  Now the checker honors the prefix if it results in a
1154// recognizable naming convention (e.g., 'new', 'init').
1155//===----------------------------------------------------------------------===//
1156
1157@interface RDar7265711 {}
1158- (id) new_stuff;
1159@end
1160
1161void rdar7265711_a(RDar7265711 *x) {
1162  id y = [x new_stuff]; // expected-warning{{leak}}
1163}
1164
1165void rdar7265711_b(RDar7265711 *x) {
1166  id y = [x new_stuff]; // no-warning
1167  [y release];
1168}
1169
1170//===----------------------------------------------------------------------===//
1171// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a
1172//                          retained reference
1173//===----------------------------------------------------------------------===//
1174
1175@interface NSCursor : NSObject
1176+ (NSCursor *)dragCopyCursor;
1177@end
1178
1179void rdar7306898(void) {
1180  // 'dragCopyCursor' does not follow Cocoa's fundamental rule.  It is a noun, not an sentence
1181  // implying a 'copy' of something.
1182  NSCursor *c =  [NSCursor dragCopyCursor]; // no-warning
1183  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1184}
1185
1186//===----------------------------------------------------------------------===//
1187// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class
1188// directly is not likely what the user intended
1189//===----------------------------------------------------------------------===//
1190
1191@interface RDar7252064 : NSObject @end
1192void rdar7252064(void) {
1193  [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1194  [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1195  [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1196  [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}}
1197}
1198
1199//===----------------------------------------------------------------------===//
1200// Tests of ownership attributes.
1201//===----------------------------------------------------------------------===//
1202
1203typedef NSString* MyStringTy;
1204
1205@protocol FooP;
1206
1207@interface TestOwnershipAttr : NSObject
1208- (NSString*) returnsAnOwnedString  NS_RETURNS_RETAINED; // no-warning
1209- (NSString*) returnsAnOwnedCFString  CF_RETURNS_RETAINED; // no-warning
1210- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning
1211- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning
1212- (NSString*) newStringNoAttr;
1213- (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}}
1214@end
1215
1216static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to function or method types}}
1217
1218void test_attr_1(TestOwnershipAttr *X) {
1219  NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}}
1220}
1221
1222void test_attr_1b(TestOwnershipAttr *X) {
1223  NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}}
1224}
1225
1226void test_attr1c(TestOwnershipAttr *X) {
1227  NSString *str = [X newString]; // no-warning
1228  NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}}
1229}
1230
1231@interface MyClassTestCFAttr : NSObject {}
1232- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED;
1233- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED;
1234- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED;
1235- (CFDateRef) newCFRetainedAsCFNoAttr;
1236- (NSDate*) alsoReturnsRetained;
1237- (CFDateRef) alsoReturnsRetainedAsCF;
1238- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED;
1239@end
1240
1241CF_RETURNS_RETAINED
1242CFDateRef returnsRetainedCFDate()  {
1243  return CFDateCreate(0, CFAbsoluteTimeGetCurrent());
1244}
1245
1246@implementation MyClassTestCFAttr
1247- (NSDate*) returnsCFRetained {
1248  return (NSDate*) returnsRetainedCFDate(); // No leak.
1249}
1250
1251- (CFDateRef) returnsCFRetainedAsCF {
1252  return returnsRetainedCFDate(); // No leak.
1253}
1254
1255- (CFDateRef) newCFRetainedAsCF {
1256  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease];
1257}
1258
1259- (CFDateRef) newCFRetainedAsCFNoAttr {
1260  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; // expected-warning{{Object with +0 retain counts returned to caller where a +1 (owning) retain count is expected}}
1261}
1262
1263- (NSDate*) alsoReturnsRetained {
1264  return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}}
1265}
1266
1267- (CFDateRef) alsoReturnsRetainedAsCF {
1268  return returnsRetainedCFDate(); // expected-warning{{leak}}
1269}
1270
1271
1272- (NSDate*) returnsNSRetained {
1273  return (NSDate*) returnsRetainedCFDate(); // no-warning
1274}
1275@end
1276
1277//===----------------------------------------------------------------------===//
1278// Test that leaks post-dominated by "panic" functions are not reported.
1279//
1280// <rdar://problem/5905851> do not report a leak when post-dominated by a call
1281// to a noreturn or panic function
1282//===----------------------------------------------------------------------===//
1283
1284void panic() __attribute__((noreturn));
1285void panic_not_in_hardcoded_list() __attribute__((noreturn));
1286
1287void test_panic_negative() {
1288  signed z = 1;
1289  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);  // expected-warning{{leak}}
1290}
1291
1292void test_panic_positive() {
1293  signed z = 1;
1294  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1295  panic();
1296}
1297
1298void test_panic_neg_2(int x) {
1299  signed z = 1;
1300  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}}
1301  if (x)
1302    panic();
1303}
1304
1305void test_panic_pos_2(int x) {
1306  signed z = 1;
1307  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1308  if (x)
1309    panic();
1310  if (!x) {
1311    // This showed up in <rdar://problem/7796563>, where we silently missed checking
1312    // the function type for noreturn.  "panic()" is a hard-coded known panic function
1313    // that isn't always noreturn.
1314    panic_not_in_hardcoded_list();
1315  }
1316}
1317
1318//===----------------------------------------------------------------------===//
1319// Test uses of blocks (closures)
1320//===----------------------------------------------------------------------===//
1321
1322void test_blocks_1_pos(void) {
1323  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1324  ^{}();
1325}
1326
1327void test_blocks_1_indirect_release(void) {
1328  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1329  ^{ [number release]; }();
1330}
1331
1332void test_blocks_1_indirect_retain(void) {
1333  // Eventually this should be reported as a leak.
1334  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1335  ^{ [number retain]; }();
1336}
1337
1338void test_blocks_1_indirect_release_via_call(void) {
1339  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1340  ^(NSObject *o){ [o release]; }(number);
1341}
1342
1343void test_blocks_1_indirect_retain_via_call(void) {
1344  // Eventually this should be reported as a leak.
1345  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1346  ^(NSObject *o){ [o retain]; }(number);
1347}
1348
1349//===--------------------------------------------------------------------===//
1350// Test sending message to super that returns an object alias.  Previously
1351// this caused a crash in the analyzer.
1352//===--------------------------------------------------------------------===//
1353
1354@interface Rdar8015556 : NSObject {} @end
1355@implementation Rdar8015556
1356- (id)retain {
1357  return [super retain];
1358}
1359@end
1360
1361// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions
1362// detector.
1363
1364@protocol Prot_R8272168 @end
1365Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168();
1366void r8272168() {
1367  GetAClassThatImplementsProt_R8272168();
1368}
1369
1370// Test case for <rdar://problem/8356342>, which in the past triggered
1371// a false positive.
1372@interface RDar8356342
1373- (NSDate*) rdar8356342:(NSDate *)inValue;
1374@end
1375
1376@implementation RDar8356342
1377- (NSDate*) rdar8356342:(NSDate*)inValue {
1378  NSDate *outValue = inValue;
1379  if (outValue == 0)
1380    outValue = [[NSDate alloc] init]; // no-warning
1381
1382  if (outValue != inValue)
1383    [outValue autorelease];
1384
1385  return outValue;
1386}
1387@end
1388
1389// <rdar://problem/8724287> - This test case previously crashed because
1390// of a bug in BugReporter.
1391extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key);
1392typedef struct __CFError * CFErrorRef;
1393extern const CFStringRef kCFErrorUnderlyingErrorKey;
1394extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err);
1395
1396static void rdar_8724287(CFErrorRef error)
1397{
1398    CFErrorRef error_to_dump;
1399
1400    error_to_dump = error;
1401    while (error_to_dump != ((void*)0)) {
1402        CFDictionaryRef info;
1403
1404        info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object allocated on line 1404 and stored into 'info'}}
1405
1406        if (info != ((void*)0)) {
1407        }
1408
1409        error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey);
1410    }
1411}
1412
1413