retain-release.m revision 30ca73237c05ec466f43054c2b686d65538c26e7 
1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -fblocks -verify -Wno-objc-root-class %s
2// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -fblocks -verify -x objective-c++ -Wno-objc-root-class %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#if __has_feature(attribute_ns_consumed)
20#define NS_CONSUMED __attribute__((ns_consumed))
21#endif
22#if __has_feature(attribute_cf_consumed)
23#define CF_CONSUMED __attribute__((cf_consumed))
24#endif
25
26//===----------------------------------------------------------------------===//
27// The following code is reduced using delta-debugging from Mac OS X headers:
28//
29// #include <Cocoa/Cocoa.h>
30// #include <CoreFoundation/CoreFoundation.h>
31// #include <DiskArbitration/DiskArbitration.h>
32// #include <QuartzCore/QuartzCore.h>
33// #include <Quartz/Quartz.h>
34// #include <IOKit/IOKitLib.h>
35//
36// It includes the basic definitions for the test cases below.
37//===----------------------------------------------------------------------===//
38
39typedef unsigned int __darwin_natural_t;
40typedef unsigned long uintptr_t;
41typedef unsigned int uint32_t;
42typedef unsigned long long uint64_t;
43typedef unsigned int UInt32;
44typedef signed long CFIndex;
45typedef CFIndex CFByteOrder;
46typedef struct {
47    CFIndex location;
48    CFIndex length;
49} CFRange;
50static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) {
51    CFRange range;
52    range.location = loc;
53    range.length = len;
54    return range;
55}
56typedef const void * CFTypeRef;
57typedef const struct __CFString * CFStringRef;
58typedef const struct __CFAllocator * CFAllocatorRef;
59extern const CFAllocatorRef kCFAllocatorDefault;
60extern CFTypeRef CFRetain(CFTypeRef cf);
61extern void CFRelease(CFTypeRef cf);
62typedef struct {
63}
64CFArrayCallBacks;
65extern const CFArrayCallBacks kCFTypeArrayCallBacks;
66typedef const struct __CFArray * CFArrayRef;
67typedef struct __CFArray * CFMutableArrayRef;
68extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
69extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
70extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
71typedef struct {
72}
73CFDictionaryKeyCallBacks;
74extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks;
75typedef struct {
76}
77CFDictionaryValueCallBacks;
78extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks;
79typedef const struct __CFDictionary * CFDictionaryRef;
80typedef struct __CFDictionary * CFMutableDictionaryRef;
81extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks);
82typedef UInt32 CFStringEncoding;
83enum {
84kCFStringEncodingMacRoman = 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  };
85extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
86typedef double CFTimeInterval;
87typedef CFTimeInterval CFAbsoluteTime;
88extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
89typedef const struct __CFDate * CFDateRef;
90extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
91extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
92typedef __darwin_natural_t natural_t;
93typedef natural_t mach_port_name_t;
94typedef mach_port_name_t mach_port_t;
95typedef int kern_return_t;
96typedef kern_return_t mach_error_t;
97enum {
98kCFNumberSInt8Type = 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    };
99typedef CFIndex CFNumberType;
100typedef const struct __CFNumber * CFNumberRef;
101extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
102typedef const struct __CFAttributedString *CFAttributedStringRef;
103typedef struct __CFAttributedString *CFMutableAttributedStringRef;
104extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ;
105extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ;
106extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ;
107typedef signed char BOOL;
108typedef unsigned long NSUInteger;
109@class NSString, Protocol;
110extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
111typedef struct _NSZone NSZone;
112@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
113@protocol NSObject
114- (BOOL)isEqual:(id)object;
115- (id)retain;
116- (oneway void)release;
117- (id)autorelease;
118- (NSString *)description;
119- (id)init;
120@end
121@protocol NSCopying 
122- (id)copyWithZone:(NSZone *)zone;
123@end
124@protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone;
125@end
126@protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
127@end
128@interface NSObject <NSObject> {}
129+ (id)allocWithZone:(NSZone *)zone;
130+ (id)alloc;
131- (void)dealloc;
132@end
133@interface NSObject (NSCoderMethods)
134- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder;
135@end
136extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
137typedef struct {
138}
139NSFastEnumerationState;
140@protocol NSFastEnumeration 
141- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
142@end
143@class NSString, NSDictionary;
144@interface NSValue : NSObject <NSCopying, NSCoding>  - (void)getValue:(void *)value;
145@end
146@interface NSNumber : NSValue
147- (char)charValue;
148- (id)initWithInt:(int)value;
149+ (NSNumber *)numberWithInt:(int)value;
150@end
151@class NSString;
152@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>
153- (NSUInteger)count;
154- (id)initWithObjects:(const id [])objects count:(NSUInteger)cnt;
155+ (id)arrayWithObject:(id)anObject;
156+ (id)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt;
157+ (id)arrayWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1)));
158- (id)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1)));
159- (id)initWithArray:(NSArray *)array;
160@end  @interface NSArray (NSArrayCreation)  + (id)array;
161@end       @interface NSAutoreleasePool : NSObject {
162}
163- (void)drain;
164@end extern NSString * const NSBundleDidLoadNotification;
165typedef double NSTimeInterval;
166@interface NSDate : NSObject <NSCopying, NSCoding>  - (NSTimeInterval)timeIntervalSinceReferenceDate;
167@end            typedef unsigned short unichar;
168@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>
169- (NSUInteger)length;
170- (NSString *)stringByAppendingString:(NSString *)aString;
171- ( const char *)UTF8String;
172- (id)initWithUTF8String:(const char *)nullTerminatedCString;
173+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
174@end        @class NSString, NSURL, NSError;
175@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding>  - (NSUInteger)length;
176+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length;
177+ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b;
178@end   @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary;
179@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>
180- (NSUInteger)count;
181+ (id)dictionaryWithObjects:(NSArray *)objects forKeys:(NSArray *)keys;
182+ (id)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt;
183@end
184@interface NSMutableDictionary : NSDictionary  - (void)removeObjectForKey:(id)aKey;
185- (void)setObject:(id)anObject forKey:(id)aKey;
186@end  @interface NSMutableDictionary (NSMutableDictionaryCreation)  + (id)dictionaryWithCapacity:(NSUInteger)numItems;
187@end  typedef double CGFloat;
188struct CGSize {
189};
190typedef struct CGSize CGSize;
191struct CGRect {
192};
193typedef struct CGRect CGRect;
194typedef mach_port_t io_object_t;
195typedef char io_name_t[128];
196typedef io_object_t io_iterator_t;
197typedef io_object_t io_service_t;
198typedef struct IONotificationPort * IONotificationPortRef;
199typedef void (*IOServiceMatchingCallback)(  void * refcon,  io_iterator_t iterator );
200io_service_t IOServiceGetMatchingService(  mach_port_t masterPort,  CFDictionaryRef matching );
201kern_return_t IOServiceGetMatchingServices(  mach_port_t masterPort,  CFDictionaryRef matching,  io_iterator_t * existing );
202kern_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)); // expected-note {{'IOServiceAddNotification' declared here}}
203kern_return_t IOServiceAddMatchingNotification(  IONotificationPortRef notifyPort,  const io_name_t notificationType,  CFDictionaryRef matching,         IOServiceMatchingCallback callback,         void * refCon,  io_iterator_t * notification );
204CFMutableDictionaryRef IOServiceMatching(  const char * name );
205CFMutableDictionaryRef IOServiceNameMatching(  const char * name );
206CFMutableDictionaryRef IOBSDNameMatching(  mach_port_t masterPort,  uint32_t options,  const char * bsdName );
207CFMutableDictionaryRef IOOpenFirmwarePathMatching(  mach_port_t masterPort,  uint32_t options,  const char * path );
208CFMutableDictionaryRef IORegistryEntryIDMatching(  uint64_t entryID );
209typedef struct __DASession * DASessionRef;
210extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
211typedef struct __DADisk * DADiskRef;
212extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
213extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
214extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
215extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
216@interface NSTask : NSObject - (id)init;
217@end                    typedef struct CGColorSpace *CGColorSpaceRef;
218typedef struct CGImage *CGImageRef;
219typedef struct CGLayer *CGLayerRef;
220@interface NSResponder : NSObject <NSCoding> {
221}
222@end    @protocol NSAnimatablePropertyContainer      - (id)animator;
223@end  extern NSString *NSAnimationTriggerOrderIn ;
224@interface NSView : NSResponder  <NSAnimatablePropertyContainer>  {
225}
226@end @protocol NSValidatedUserInterfaceItem - (SEL)action;
227@end   @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem;
228@end  @class NSDate, NSDictionary, NSError, NSException, NSNotification;
229@class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError;
230@interface NSApplication : NSResponder <NSUserInterfaceValidations> {
231}
232- (void)beginSheet:(NSWindow *)sheet modalForWindow:(NSWindow *)docWindow modalDelegate:(id)modalDelegate didEndSelector:(SEL)didEndSelector contextInfo:(void *)contextInfo;
233@end   enum {
234NSTerminateCancel = 0,         NSTerminateNow = 1,         NSTerminateLater = 2 };
235typedef NSUInteger NSApplicationTerminateReply;
236@protocol NSApplicationDelegate <NSObject> @optional        - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
237@end  @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView;
238@interface NSCell : NSObject <NSCopying, NSCoding> {
239}
240@end 
241typedef struct {
242}
243CVTimeStamp;
244@interface CIImage : NSObject <NSCoding, NSCopying> {
245}
246typedef int CIFormat;
247@end  enum {
248kDAReturnSuccess = 0,     kDAReturnError = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x01,     kDAReturnBusy = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x02,     kDAReturnBadArgument = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x03,     kDAReturnExclusiveAccess = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x04,     kDAReturnNoResources = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x05,     kDAReturnNotFound = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x06,     kDAReturnNotMounted = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x07,     kDAReturnNotPermitted = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x08,     kDAReturnNotPrivileged = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x09,     kDAReturnNotReady = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0A,     kDAReturnNotWritable = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0B,     kDAReturnUnsupported = (((0x3eU)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0C };
249typedef mach_error_t DAReturn;
250typedef const struct __DADissenter * DADissenterRef;
251extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
252@interface CIContext: NSObject {
253}
254- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r;
255- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r     format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs;
256- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d;
257@end extern NSString* const QCRendererEventKey;
258@protocol QCCompositionRenderer - (NSDictionary*) attributes;
259@end   @interface QCRenderer : NSObject <QCCompositionRenderer> {
260}
261- (id) createSnapshotImageOfType:(NSString*)type;
262@end  extern NSString* const QCViewDidStartRenderingNotification;
263@interface QCView : NSView <QCCompositionRenderer> {
264}
265- (id) createSnapshotImageOfType:(NSString*)type;
266@end    enum {
267ICEXIFOrientation1 = 1,     ICEXIFOrientation2 = 2,     ICEXIFOrientation3 = 3,     ICEXIFOrientation4 = 4,     ICEXIFOrientation5 = 5,     ICEXIFOrientation6 = 6,     ICEXIFOrientation7 = 7,     ICEXIFOrientation8 = 8, };
268@class ICDevice;
269@protocol ICDeviceDelegate <NSObject>  @required      - (void)didRemoveDevice:(ICDevice*)device;
270@end extern NSString *const ICScannerStatusWarmingUp;
271@class ICScannerDevice;
272@protocol ICScannerDeviceDelegate <ICDeviceDelegate>  @optional       - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
273@end
274
275typedef long unsigned int __darwin_size_t;
276typedef __darwin_size_t size_t;
277typedef unsigned long CFTypeID;
278struct CGPoint {
279  CGFloat x;
280  CGFloat y;
281};
282typedef struct CGPoint CGPoint;
283typedef struct CGGradient *CGGradientRef;
284typedef uint32_t CGGradientDrawingOptions;
285extern CFTypeID CGGradientGetTypeID(void);
286extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef
287  space, const CGFloat components[], const CGFloat locations[], size_t count);
288extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space,
289  CFArrayRef colors, const CGFloat locations[]);
290extern CGGradientRef CGGradientRetain(CGGradientRef gradient);
291extern void CGGradientRelease(CGGradientRef gradient);
292typedef struct CGContext *CGContextRef;
293extern void CGContextDrawLinearGradient(CGContextRef context,
294    CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint,
295    CGGradientDrawingOptions options);
296extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void);
297
298@interface NSMutableArray : NSObject
299- (void)addObject:(id)object;
300+ (id)array;
301@end
302
303// This is how NSMakeCollectable is declared in the OS X 10.8 headers.
304id NSMakeCollectable(CFTypeRef __attribute__((cf_consumed))) __attribute__((ns_returns_retained));
305
306typedef const struct __CFUUID * CFUUIDRef;
307
308extern
309void *CFPlugInInstanceCreate(CFAllocatorRef allocator, CFUUIDRef factoryUUID, CFUUIDRef typeUUID);
310
311//===----------------------------------------------------------------------===//
312// Test cases.
313//===----------------------------------------------------------------------===//
314
315CFAbsoluteTime f1() {
316  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
317  CFDateRef date = CFDateCreate(0, t);
318  CFRetain(date);
319  CFRelease(date);
320  CFDateGetAbsoluteTime(date); // no-warning
321  CFRelease(date);
322  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released}}
323  return t;
324}
325
326CFAbsoluteTime f2() {
327  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
328  CFDateRef date = CFDateCreate(0, t);  
329  [((NSDate*) date) retain];
330  CFRelease(date);
331  CFDateGetAbsoluteTime(date); // no-warning
332  [((NSDate*) date) release];
333  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released}}
334  return t;
335}
336
337
338NSDate* global_x;
339
340// Test to see if we supresss an error when we store the pointer
341// to a global.
342
343CFAbsoluteTime f3() {
344  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
345  CFDateRef date = CFDateCreate(0, t);  
346  [((NSDate*) date) retain];
347  CFRelease(date);
348  CFDateGetAbsoluteTime(date); // no-warning
349  global_x = (NSDate*) date;  
350  [((NSDate*) date) release];
351  t = CFDateGetAbsoluteTime(date);   // no-warning
352  return t;
353}
354
355//---------------------------------------------------------------------------
356// Test case 'f4' differs for region store and basic store.  See
357// retain-release-region-store.m and retain-release-basic-store.m.
358//---------------------------------------------------------------------------
359
360// Test a leak.
361
362CFAbsoluteTime f5(int x) {  
363  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
364  CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}}
365  
366  if (x)
367    CFRelease(date);
368  
369  return t;
370}
371
372// Test a leak involving the return.
373
374CFDateRef f6(int x) {  
375  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  // expected-warning{{leak}}
376  CFRetain(date);
377  return date;
378}
379
380// Test a leak involving an overwrite.
381
382CFDateRef f7() {
383  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());  //expected-warning{{leak}}
384  CFRetain(date);
385  date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning {{leak}}
386  return date;
387}
388
389// Generalization of Create rule.  MyDateCreate returns a CFXXXTypeRef, and
390// has the word create.
391CFDateRef MyDateCreate();
392
393CFDateRef f8() {
394  CFDateRef date = MyDateCreate(); // expected-warning{{leak}}
395  CFRetain(date);  
396  return date;
397}
398
399__attribute__((cf_returns_retained)) CFDateRef f9() {
400  CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // no-warning
401  int *p = 0;
402  // When allocations fail, CFDateCreate can return null.
403  if (!date) *p = 1; // expected-warning{{null}}
404  return date;
405}
406
407// Handle DiskArbitration API:
408//
409// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
410//
411void f10(io_service_t media, DADiskRef d, CFStringRef s) {
412  DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}}
413  if (disk) NSLog(@"ok");
414  
415  disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}}
416  if (disk) NSLog(@"ok");
417
418  CFDictionaryRef dict = DADiskCopyDescription(d);  // expected-warning{{leak}}
419  if (dict) NSLog(@"ok"); 
420  
421  disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}}
422  if (disk) NSLog(@"ok");
423    
424  DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault,   // expected-warning{{leak}}
425                                                kDAReturnSuccess, s);
426  if (dissenter) NSLog(@"ok");
427  
428  DASessionRef session = DASessionCreate(kCFAllocatorDefault);  // expected-warning{{leak}}
429  if (session) NSLog(@"ok");
430}
431
432// Test retain/release checker with CFString and CFMutableArray.
433void f11() {
434  // Create the array.
435  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
436
437  // Create a string.
438  CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
439                                             kCFStringEncodingUTF8);
440
441  // Add the string to the array.
442  CFArrayAppendValue(A, s1);
443  
444  // Decrement the reference count.
445  CFRelease(s1); // no-warning
446  
447  // Get the string.  We don't own it.
448  s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
449  
450  // Release the array.
451  CFRelease(A); // no-warning
452  
453  // Release the string.  This is a bug.
454  CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
455}
456
457// PR 3337: Handle functions declared using typedefs.
458typedef CFTypeRef CREATEFUN();
459CREATEFUN MyCreateFun;
460
461void f12() {
462  CFTypeRef o = MyCreateFun(); // expected-warning {{leak}}
463}
464
465void f13_autorelease() {
466  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
467  [(id) A autorelease]; // no-warning
468}
469
470void f13_autorelease_b() {
471  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
472  [(id) A autorelease];
473  [(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}}
474}
475
476CFMutableArrayRef f13_autorelease_c() {
477  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
478  [(id) A autorelease];
479  [(id) A autorelease]; 
480  return A; // expected-warning{{Object sent -autorelease too many times}}
481}
482
483CFMutableArrayRef f13_autorelease_d() {
484  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
485  [(id) A autorelease];
486  [(id) A autorelease]; 
487  CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}}
488  CFRelease(B); // no-warning
489  while (1) {}
490}
491
492
493// This case exercises the logic where the leak site is the same as the allocation site.
494void f14_leakimmediately() {
495  CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}}
496}
497
498// Test that we track an allocated object beyond the point where the *name*
499// of the variable storing the reference is no longer live.
500void f15() {
501  // Create the array.
502  CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
503  CFMutableArrayRef *B = &A;
504  // At this point, the name 'A' is no longer live.
505  CFRelease(*B);  // no-warning
506}
507
508// Test when we pass NULL to CFRetain/CFRelease.
509void f16(int x, CFTypeRef p) {
510  if (p)
511    return;
512
513  if (x) {
514    CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}}
515  }
516  else {
517    CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}}
518  }
519}
520
521// Test that an object is non-null after being CFRetained/CFReleased.
522void f17(int x, CFTypeRef p) {
523  if (x) {
524    CFRelease(p);
525    if (!p)
526      CFRelease(0); // no-warning
527  }
528  else {
529    CFRetain(p);
530    if (!p)
531      CFRetain(0); // no-warning
532  }
533}
534
535// Test basic tracking of ivars associated with 'self'.  For the retain/release
536// checker we currently do not want to flag leaks associated with stores
537// of tracked objects to ivars.
538@interface SelfIvarTest : NSObject {
539  id myObj;
540}
541- (void)test_self_tracking;
542@end
543
544@implementation SelfIvarTest
545- (void)test_self_tracking {
546  myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
547}
548@end
549
550// Test return of non-owned objects in contexts where an owned object
551// is expected.
552@interface TestReturnNotOwnedWhenExpectedOwned
553- (NSString*)newString;
554@end
555
556@implementation TestReturnNotOwnedWhenExpectedOwned
557- (NSString*)newString {
558  NSString *s = [NSString stringWithUTF8String:"hello"];
559  return s; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}}
560}
561@end
562
563// <rdar://problem/6659160>
564int isFoo(char c);
565
566static void rdar_6659160(char *inkind, char *inname)
567{
568  // We currently expect that [NSObject alloc] cannot fail.  This
569  // will be a toggled flag in the future.  It can indeed return null, but
570  // Cocoa programmers generally aren't expected to reason about out-of-memory
571  // conditions.
572  NSString *kind = [[NSString alloc] initWithUTF8String:inkind];  // expected-warning{{leak}}
573  
574  // We do allow stringWithUTF8String to fail.  This isn't really correct, as
575  // far as returning 0.  In most error conditions it will throw an exception.
576  // If allocation fails it could return 0, but again this
577  // isn't expected.
578  NSString *name = [NSString stringWithUTF8String:inname];
579  if(!name)
580    return;
581
582  const char *kindC = 0;
583  const char *nameC = 0;
584  
585  // In both cases, we cannot reach a point down below where we
586  // dereference kindC or nameC with either being null.  This is because
587  // we assume that [NSObject alloc] doesn't fail and that we have the guard
588  // up above.
589  
590  if(kind)
591    kindC = [kind UTF8String];
592  if(name)
593    nameC = [name UTF8String];
594  if(!isFoo(kindC[0])) // expected-warning{{null}}
595    return;
596  if(!isFoo(nameC[0])) // no-warning
597    return;
598
599  [kind release];
600  [name release]; // expected-warning{{Incorrect decrement of the reference count}}
601}
602
603// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming
604//  conventions with respect to 'return'ing ownership.
605@interface PR3677: NSObject @end
606@implementation PR3677
607+ (id)allocWithZone:(NSZone *)inZone {
608  return [super allocWithZone:inZone];  // no-warning
609}
610@end
611
612// PR 3820 - Reason about calls to -dealloc
613void pr3820_DeallocInsteadOfRelease(void)
614{
615  id foo = [[NSString alloc] init]; // no-warning
616  [foo dealloc];
617  // foo is not leaked, since it has been deallocated.
618}
619
620void pr3820_ReleaseAfterDealloc(void)
621{
622  id foo = [[NSString alloc] init];
623  [foo dealloc];
624  [foo release];  // expected-warning{{used after it is release}}
625  // NSInternalInconsistencyException: message sent to deallocated object
626}
627
628void pr3820_DeallocAfterRelease(void)
629{
630  NSLog(@"\n\n[%s]", __FUNCTION__);
631  id foo = [[NSString alloc] init];
632  [foo release];
633  [foo dealloc]; // expected-warning{{used after it is released}}
634  // message sent to released object
635}
636
637// From <rdar://problem/6704930>.  The problem here is that 'length' binds to
638// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to
639// reason about '($0 - 1) > constant'.  As a temporary hack, we drop the value
640// of '($0 - 1)' and conjure a new symbol.
641void rdar6704930(unsigned char *s, unsigned int length) {
642  NSString* name = 0;
643  if (s != 0) {
644    if (length > 0) {
645      while (length > 0) {
646        if (*s == ':') {
647          ++s;
648          --length;
649          name = [[NSString alloc] init]; // no-warning
650          break;
651        }
652        ++s;
653        --length;
654      }
655      if ((length == 0) && (name != 0)) {
656        [name release];
657        name = 0;
658      }
659      if (length == 0) { // no ':' found -> use it all as name
660        name = [[NSString alloc] init]; // no-warning
661      }
662    }
663  }
664
665  if (name != 0) {
666    [name release];
667  }
668}
669
670//===----------------------------------------------------------------------===//
671// <rdar://problem/6833332>
672// One build of the analyzer accidentally stopped tracking the allocated
673// object after the 'retain'.
674//===----------------------------------------------------------------------===//
675
676@interface rdar_6833332 : NSObject <NSApplicationDelegate> {
677    NSWindow *window;
678}
679@property (nonatomic, retain) NSWindow *window;
680@end
681
682@implementation rdar_6833332
683@synthesize window;
684- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
685 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}}
686
687 [dict setObject:@"foo" forKey:@"bar"];
688
689 NSLog(@"%@", dict);
690}
691- (void)dealloc {
692    [window release];
693    [super dealloc];
694}
695
696- (void)radar10102244 {
697 NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} 
698 if (window) 
699   NSLog(@"%@", window);    
700}
701@end
702
703//===----------------------------------------------------------------------===//
704// <rdar://problem/6257780> clang checker fails to catch use-after-release
705//===----------------------------------------------------------------------===//
706
707int rdar_6257780_Case1() {
708  NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
709  NSArray *array = [NSArray array];
710  [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
711  [pool drain];
712  return 0;
713}
714
715//===----------------------------------------------------------------------===//
716// <rdar://problem/10640253> Analyzer is confused about NSAutoreleasePool -allocWithZone:.
717//===----------------------------------------------------------------------===//
718
719void rdar_10640253_autorelease_allocWithZone() {
720    NSAutoreleasePool *pool = [[NSAutoreleasePool allocWithZone:(NSZone*)0] init];
721    (void) pool;
722}
723
724//===----------------------------------------------------------------------===//
725// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs
726//===----------------------------------------------------------------------===//
727
728void rdar_6866843() {
729 NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
730 NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];
731 NSArray* array = [[NSArray alloc] init];
732 [dictionary setObject:array forKey:@"key"];
733 [array release];
734 // Using 'array' here should be fine
735 NSLog(@"array = %@\n", array); // no-warning
736 // Now the array is released
737 [dictionary release];
738 [pool drain];
739}
740
741
742//===----------------------------------------------------------------------===//
743// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects
744//===----------------------------------------------------------------------===//
745
746typedef CFTypeRef OtherRef;
747
748@interface RDar6877235 : NSObject {}
749- (CFTypeRef)_copyCFTypeRef;
750- (OtherRef)_copyOtherRef;
751@end
752
753@implementation RDar6877235
754- (CFTypeRef)_copyCFTypeRef {
755  return [[NSString alloc] init]; // no-warning
756}
757- (OtherRef)_copyOtherRef {
758  return [[NSString alloc] init]; // no-warning
759}
760@end
761
762//===----------------------------------------------------------------------===//
763// <rdar://problem/6320065> false positive - init method returns an object
764// owned by caller
765//===----------------------------------------------------------------------===//
766
767@interface RDar6320065 : NSObject {
768  NSString *_foo;
769}
770- (id)initReturningNewClass;
771- (id)_initReturningNewClassBad;
772- (id)initReturningNewClassBad2;
773@end
774
775@interface RDar6320065Subclass : RDar6320065
776@end
777
778@implementation RDar6320065
779- (id)initReturningNewClass {
780  [self release];
781  self = [[RDar6320065Subclass alloc] init]; // no-warning
782  return self;
783}
784- (id)_initReturningNewClassBad {
785  [self release];
786  [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}}
787  return self;
788}
789- (id)initReturningNewClassBad2 {
790  [self release];
791  self = [[RDar6320065Subclass alloc] init];
792  return [self autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}}
793}
794
795@end
796
797@implementation RDar6320065Subclass
798@end
799
800int RDar6320065_test() {
801  RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning
802  [test release];
803  return 0;
804}
805
806//===----------------------------------------------------------------------===//
807// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object 
808//  and claims the receiver
809//===----------------------------------------------------------------------===//
810
811@interface RDar7129086 : NSObject {} @end
812@implementation RDar7129086
813- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder {
814  [self release]; // no-warning
815  return [NSString alloc];  // no-warning
816}
817@end
818
819//===----------------------------------------------------------------------===//
820// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a
821//  retained object
822//===----------------------------------------------------------------------===//
823
824@interface RDar6859457 : NSObject {}
825- (NSString*) NoCopyString;
826- (NSString*) noCopyString;
827@end
828
829@implementation RDar6859457 
830- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
831- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}}
832@end
833
834void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) {
835  [x NoCopyString]; // expected-warning{{leak}}
836  [x noCopyString]; // expected-warning{{leak}}
837  [NSData dataWithBytesNoCopy:bytes length:dataLength];  // no-warning
838  [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning
839}
840
841//===----------------------------------------------------------------------===//
842// PR 4230 - an autorelease pool is not necessarily leaked during a premature
843//  return
844//===----------------------------------------------------------------------===//
845
846static void PR4230(void)
847{
848  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning
849  NSString *object = [[[NSString alloc] init] autorelease]; // no-warning
850  return;
851}
852
853//===----------------------------------------------------------------------===//
854// Method name that has a null IdentifierInfo* for its first selector slot.
855// This test just makes sure that we handle it.
856//===----------------------------------------------------------------------===//
857
858@interface TestNullIdentifier
859@end
860
861@implementation TestNullIdentifier
862+ (id):(int)x, ... {
863  return [[NSString alloc] init]; // expected-warning{{leak}}
864}
865@end
866
867//===----------------------------------------------------------------------===//
868// <rdar://problem/6893565> don't flag leaks for return types that cannot be 
869//                          determined to be CF types
870//===----------------------------------------------------------------------===//
871
872// We don't know if 'struct s6893565' represents a Core Foundation type, so
873// we shouldn't emit an error here.
874typedef struct s6893565* TD6893565;
875
876@interface RDar6893565 {}
877-(TD6893565)newThing;
878@end
879
880@implementation RDar6893565
881-(TD6893565)newThing {  
882  return (TD6893565) [[NSString alloc] init]; // no-warning
883}
884@end
885
886//===----------------------------------------------------------------------===//
887// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods
888//===----------------------------------------------------------------------===//
889
890void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context,
891                 NSString *str, CIImage *img, CGRect rect,
892                 CIFormat form, CGColorSpaceRef cs) {
893  [view createSnapshotImageOfType:str]; // expected-warning{{leak}}
894  [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}}
895  [context createCGImage:img fromRect:rect]; // expected-warning{{leak}}
896  [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}}
897}
898
899//===----------------------------------------------------------------------===//
900// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:]
901//                           misinterpreted by clang scan-build
902//===----------------------------------------------------------------------===//
903
904void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) {
905  [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}}
906}
907
908//===----------------------------------------------------------------------===//
909// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release 
910//                          checker
911//===----------------------------------------------------------------------===//
912
913void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options,  const char * bsdName) {  
914  IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}}
915}
916
917void IOServiceMatching_wrapper(const char * name) {
918  IOServiceMatching(name); // expected-warning{{leak}}
919}
920
921void IOServiceNameMatching_wrapper(const char * name) {
922  IOServiceNameMatching(name); // expected-warning{{leak}}
923}
924
925CF_RETURNS_RETAINED CFDictionaryRef CreateDict();
926
927void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType,
928  mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) {
929
930  CFDictionaryRef matching = CreateDict();
931  CFRelease(matching);
932  IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}}
933                           wakePort, reference, notification);
934}
935
936void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) {
937  IORegistryEntryIDMatching(entryID); // expected-warning{{leak}}
938}
939
940void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options,
941                                        const char * path) {
942  IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}}
943}
944
945void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) {
946  CFDictionaryRef matching = CreateDict();
947  IOServiceGetMatchingService(masterPort, matching);
948  CFRelease(matching); // expected-warning{{used after it is released}}
949}
950
951void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) {
952  CFDictionaryRef matching = CreateDict();
953  IOServiceGetMatchingServices(masterPort, matching, existing);
954  CFRelease(matching); // expected-warning{{used after it is released}}
955}
956
957void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, 
958  IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) {
959    
960  CFDictionaryRef matching = CreateDict();
961  IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification);
962  CFRelease(matching); // expected-warning{{used after it is released}}
963}
964
965//===----------------------------------------------------------------------===//
966// Test of handling objects whose references "escape" to containers.
967//===----------------------------------------------------------------------===//
968
969void CFDictionaryAddValue(CFMutableDictionaryRef, void *, void *);
970
971// <rdar://problem/6539791>
972void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) {
973  CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
974  CFDictionaryAddValue(y, key, x);
975  CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet
976  signed z = 1;
977  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
978  if (value) {
979    CFDictionaryAddValue(x, val_key, (void*)value); // no-warning
980    CFRelease(value);
981    CFDictionaryAddValue(y, val_key, (void*)value); // no-warning
982  }
983}
984
985// <rdar://problem/6560661>
986// Same issue, except with "AppendValue" functions.
987void rdar_6560661(CFMutableArrayRef x) {
988  signed z = 1;
989  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);
990  // CFArrayAppendValue keeps a reference to value.
991  CFArrayAppendValue(x, value);
992  CFRelease(value);
993  CFRetain(value);
994  CFRelease(value); // no-warning
995}
996
997// <rdar://problem/7152619>
998// Same issue, excwept with "CFAttributeStringSetAttribute".
999void rdar_7152619(CFStringRef str) {
1000  CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0);
1001  CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string);
1002  CFRelease(string);
1003  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1004  CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number);
1005  [number release];
1006  [number retain];
1007  CFRelease(attrString);  
1008}
1009
1010//===----------------------------------------------------------------------===//
1011// Test of handling CGGradientXXX functions.
1012//===----------------------------------------------------------------------===//
1013
1014void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
1015                  CGPoint myEndPoint) {
1016  size_t num_locations = 6;
1017  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
1018  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
1019     x,  // Start color
1020    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
1021    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
1022    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
1023    255.0/255.0,255.0/255.0, 255.0/255.0, x,
1024    255.0/255.0,255.0/255.0, 255.0/255.0, x
1025  }; // End color
1026  
1027  CGGradientRef myGradient =
1028    CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}}
1029      components, locations, num_locations);
1030
1031  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
1032                              0);
1033  CGGradientRelease(myGradient);
1034}
1035
1036void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint,
1037                  CGPoint myEndPoint) {
1038  size_t num_locations = 6;
1039  CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 };
1040  CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0,
1041     x,  // Start color
1042    207.0/255.0, 39.0/255.0, 39.0/255.0, x,
1043    147.0/255.0, 21.0/255.0, 22.0/255.0, x,
1044    175.0/255.0, 175.0/255.0, 175.0/255.0, x,
1045    255.0/255.0,255.0/255.0, 255.0/255.0, x,
1046    255.0/255.0,255.0/255.0, 255.0/255.0, x
1047  }; // End color
1048  
1049  CGGradientRef myGradient =
1050   CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}}
1051
1052  CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint,
1053                              0);
1054}
1055
1056//===----------------------------------------------------------------------===//
1057// <rdar://problem/7299394> clang false positive: retained instance passed to
1058//                          thread in pthread_create marked as leak
1059//
1060// Until we have full IPA, the analyzer should stop tracking the reference
1061// count of objects passed to pthread_create.
1062//
1063//===----------------------------------------------------------------------===//
1064
1065struct _opaque_pthread_t {};
1066struct _opaque_pthread_attr_t {};
1067typedef struct _opaque_pthread_t *__darwin_pthread_t;
1068typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
1069typedef __darwin_pthread_t pthread_t;
1070typedef __darwin_pthread_attr_t pthread_attr_t;
1071typedef unsigned long __darwin_pthread_key_t;
1072typedef __darwin_pthread_key_t pthread_key_t;
1073
1074int pthread_create(pthread_t *, const pthread_attr_t *,
1075                   void *(*)(void *), void *);
1076
1077int pthread_setspecific(pthread_key_t key, const void *value);
1078
1079void *rdar_7299394_start_routine(void *p) {
1080  [((id) p) release];
1081  return 0;
1082}
1083void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) {
1084  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1085  pthread_create(thread, attr, rdar_7299394_start_routine, number);
1086}
1087void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) {
1088  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1089}
1090
1091//===----------------------------------------------------------------------===//
1092// <rdar://problem/11282706> false positive with not understanding thread
1093// local storage
1094//===----------------------------------------------------------------------===//
1095
1096void rdar11282706(pthread_key_t key) {
1097  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1098  pthread_setspecific(key, (void*) number);
1099}
1100
1101//===----------------------------------------------------------------------===//
1102// <rdar://problem/7283567> False leak associated with call to 
1103//                          CVPixelBufferCreateWithBytes ()
1104//
1105// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and
1106// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the
1107// pixel buffer object.  These test cases show how the analyzer stops tracking
1108// the reference count for the objects passed for this argument.  This
1109// could be made smarter.
1110//===----------------------------------------------------------------------===//
1111
1112typedef int int32_t;
1113typedef UInt32 FourCharCode;
1114typedef FourCharCode OSType;
1115typedef uint64_t CVOptionFlags;
1116typedef int32_t CVReturn;
1117typedef struct __CVBuffer *CVBufferRef;
1118typedef CVBufferRef CVImageBufferRef;
1119typedef CVImageBufferRef CVPixelBufferRef;
1120typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress );
1121
1122extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1123            size_t width,
1124            size_t height,
1125            OSType pixelFormatType,
1126            void *baseAddress,
1127            size_t bytesPerRow,
1128            CVPixelBufferReleaseBytesCallback releaseCallback,
1129            void *releaseRefCon,
1130            CFDictionaryRef pixelBufferAttributes,
1131                   CVPixelBufferRef *pixelBufferOut) ;
1132
1133typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] );
1134
1135extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator,
1136        size_t width,
1137        size_t height,
1138        OSType pixelFormatType,
1139        void *dataPtr,
1140        size_t dataSize,
1141        size_t numberOfPlanes,
1142        void *planeBaseAddress[],
1143        size_t planeWidth[],
1144        size_t planeHeight[],
1145        size_t planeBytesPerRow[],
1146        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1147        void *releaseRefCon,
1148        CFDictionaryRef pixelBufferAttributes,
1149        CVPixelBufferRef *pixelBufferOut) ;
1150
1151extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator,
1152            size_t width,
1153            size_t height,
1154            OSType pixelFormatType,
1155            void *baseAddress,
1156            size_t bytesPerRow,
1157            CVPixelBufferReleaseBytesCallback releaseCallback,
1158            void *releaseRefCon,
1159            CFDictionaryRef pixelBufferAttributes,
1160                   CVPixelBufferRef *pixelBufferOut) ;
1161
1162CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height,
1163                      OSType pixelFormatType, void *baseAddress,
1164                      size_t bytesPerRow,
1165                      CVPixelBufferReleaseBytesCallback releaseCallback,
1166                      CFDictionaryRef pixelBufferAttributes,
1167                      CVPixelBufferRef *pixelBufferOut) {
1168
1169  // For the allocated object, it doesn't really matter what type it is
1170  // for the purpose of this test.  All we want to show is that
1171  // this is freed later by the callback.
1172  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1173  
1174  return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType,
1175                                baseAddress, bytesPerRow, releaseCallback,
1176                                number, // potentially released by callback
1177                                pixelBufferAttributes, pixelBufferOut) ;
1178}
1179
1180CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height,
1181        OSType pixelFormatType, void *dataPtr, size_t dataSize,
1182        size_t numberOfPlanes, void *planeBaseAddress[],
1183        size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[],
1184        CVPixelBufferReleasePlanarBytesCallback releaseCallback,
1185        CFDictionaryRef pixelBufferAttributes,
1186        CVPixelBufferRef *pixelBufferOut) {
1187    
1188    // For the allocated object, it doesn't really matter what type it is
1189    // for the purpose of this test.  All we want to show is that
1190    // this is freed later by the callback.
1191    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1192
1193    return CVPixelBufferCreateWithPlanarBytes(allocator,
1194              width, height, pixelFormatType, dataPtr, dataSize,
1195              numberOfPlanes, planeBaseAddress, planeWidth,
1196              planeHeight, planeBytesPerRow, releaseCallback,
1197              number, // potentially released by callback
1198              pixelBufferAttributes, pixelBufferOut) ;
1199}
1200
1201//===----------------------------------------------------------------------===//
1202// <rdar://problem/7358899> False leak associated with 
1203//  CGBitmapContextCreateWithData
1204//===----------------------------------------------------------------------===//
1205typedef uint32_t CGBitmapInfo;
1206typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data);
1207    
1208CGContextRef CGBitmapContextCreateWithData(void *data,
1209    size_t width, size_t height, size_t bitsPerComponent,
1210    size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1211    CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo);
1212
1213void rdar_7358899(void *data,
1214      size_t width, size_t height, size_t bitsPerComponent,
1215      size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo,
1216      CGBitmapContextReleaseDataCallback releaseCallback) {
1217
1218    // For the allocated object, it doesn't really matter what type it is
1219    // for the purpose of this test.  All we want to show is that
1220    // this is freed later by the callback.
1221    NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1222
1223  CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}}
1224    bytesPerRow, space, bitmapInfo, releaseCallback, number);
1225}
1226
1227//===----------------------------------------------------------------------===//
1228// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to
1229//  start before '_' when determining Cocoa fundamental rule
1230//
1231// Previously the retain/release checker just skipped prefixes before the
1232// first '_' entirely.  Now the checker honors the prefix if it results in a
1233// recognizable naming convention (e.g., 'new', 'init').
1234//===----------------------------------------------------------------------===//
1235
1236@interface RDar7265711 {}
1237- (id) new_stuff;
1238@end
1239
1240void rdar7265711_a(RDar7265711 *x) {
1241  id y = [x new_stuff]; // expected-warning{{leak}}
1242}
1243
1244void rdar7265711_b(RDar7265711 *x) {
1245  id y = [x new_stuff]; // no-warning
1246  [y release];
1247}
1248
1249//===----------------------------------------------------------------------===//
1250// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a
1251//                          retained reference
1252//===----------------------------------------------------------------------===//
1253
1254@interface NSCursor : NSObject
1255+ (NSCursor *)dragCopyCursor;
1256@end
1257
1258void rdar7306898(void) {
1259  // 'dragCopyCursor' does not follow Cocoa's fundamental rule.  It is a noun, not an sentence
1260  // implying a 'copy' of something.
1261  NSCursor *c =  [NSCursor dragCopyCursor]; // no-warning
1262  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1263}
1264
1265//===----------------------------------------------------------------------===//
1266// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class
1267// directly is not likely what the user intended
1268//===----------------------------------------------------------------------===//
1269
1270@interface RDar7252064 : NSObject @end
1271void rdar7252064(void) {
1272  [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1273  [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1274  [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}}
1275  [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}}
1276}
1277
1278//===----------------------------------------------------------------------===//
1279// Tests of ownership attributes.
1280//===----------------------------------------------------------------------===//
1281
1282typedef NSString* MyStringTy;
1283
1284@protocol FooP;
1285
1286@interface TestOwnershipAttr : NSObject
1287- (NSString*) returnsAnOwnedString  NS_RETURNS_RETAINED; // no-warning
1288- (NSString*) returnsAnOwnedCFString  CF_RETURNS_RETAINED; // no-warning
1289- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning
1290- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning
1291- (NSString*) newStringNoAttr;
1292- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}}
1293- (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED;
1294+ (void) consume:(id) NS_CONSUMED x;
1295+ (void) consume2:(id) CF_CONSUMED x;
1296@end
1297
1298static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions and methods}}
1299
1300void test_attr_1(TestOwnershipAttr *X) {
1301  NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}}
1302}
1303
1304void test_attr_1b(TestOwnershipAttr *X) {
1305  NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}}
1306}
1307
1308void test_attr1c(TestOwnershipAttr *X) {
1309  NSString *str = [X newString]; // no-warning
1310  NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}}
1311}
1312
1313void testattr2_a() {
1314  TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}}
1315}
1316
1317void testattr2_b() {
1318  TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit];  // expected-warning{{leak}}
1319}
1320
1321void testattr2_b_11358224_self_assign_looses_the_leak() {
1322  TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit];// expected-warning{{leak}}
1323  x = x;
1324}
1325
1326void testattr2_c() {
1327  TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning
1328  [x release];
1329}
1330
1331void testattr3() {
1332  TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning
1333  [TestOwnershipAttr consume:x];
1334  TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning
1335  [TestOwnershipAttr consume2:y];
1336}
1337
1338void consume_ns(id NS_CONSUMED x);
1339void consume_cf(id CF_CONSUMED x);
1340
1341void testattr4() {
1342  TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning
1343  consume_ns(x);
1344  TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning
1345  consume_cf(y);
1346}
1347
1348@interface TestOwnershipAttr2 : NSObject
1349- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning
1350@end
1351
1352@implementation TestOwnershipAttr2
1353- (NSString*) newString {
1354  return [NSString alloc]; // expected-warning {{Potential leak of an object}}
1355}
1356@end
1357
1358@interface MyClassTestCFAttr : NSObject {}
1359- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED;
1360- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED;
1361- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED;
1362- (CFDateRef) newCFRetainedAsCFNoAttr;
1363- (NSDate*) alsoReturnsRetained;
1364- (CFDateRef) alsoReturnsRetainedAsCF;
1365- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED;
1366@end
1367
1368CF_RETURNS_RETAINED
1369CFDateRef returnsRetainedCFDate()  {
1370  return CFDateCreate(0, CFAbsoluteTimeGetCurrent());
1371}
1372
1373@implementation MyClassTestCFAttr
1374- (NSDate*) returnsCFRetained {
1375  return (NSDate*) returnsRetainedCFDate(); // No leak.
1376}
1377
1378- (CFDateRef) returnsCFRetainedAsCF {
1379  return returnsRetainedCFDate(); // No leak.
1380}
1381
1382- (CFDateRef) newCFRetainedAsCF {
1383  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease];
1384}
1385
1386- (CFDateRef) newCFRetainedAsCFNoAttr {
1387  return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}}
1388}
1389
1390- (NSDate*) alsoReturnsRetained {
1391  return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}}
1392}
1393
1394- (CFDateRef) alsoReturnsRetainedAsCF {
1395  return returnsRetainedCFDate(); // expected-warning{{leak}}
1396}
1397
1398
1399- (NSDate*) returnsNSRetained {
1400  return (NSDate*) returnsRetainedCFDate(); // no-warning
1401}
1402@end
1403
1404//===----------------------------------------------------------------------===//
1405// Test that leaks post-dominated by "panic" functions are not reported.
1406//
1407// <rdar://problem/5905851> do not report a leak when post-dominated by a call
1408// to a noreturn or panic function
1409//===----------------------------------------------------------------------===//
1410
1411void panic() __attribute__((noreturn));
1412void panic_not_in_hardcoded_list() __attribute__((noreturn));
1413
1414void test_panic_negative() {
1415  signed z = 1;
1416  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z);  // expected-warning{{leak}}
1417}
1418
1419void test_panic_positive() {
1420  signed z = 1;
1421  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1422  panic();
1423}
1424
1425void test_panic_neg_2(int x) {
1426  signed z = 1;
1427  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}}
1428  if (x)
1429    panic();
1430}
1431
1432void test_panic_pos_2(int x) {
1433  signed z = 1;
1434  CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning
1435  if (x)
1436    panic();
1437  if (!x) {
1438    // This showed up in <rdar://problem/7796563>, where we silently missed checking
1439    // the function type for noreturn.  "panic()" is a hard-coded known panic function
1440    // that isn't always noreturn.
1441    panic_not_in_hardcoded_list();
1442  }
1443}
1444
1445//===----------------------------------------------------------------------===//
1446// Test uses of blocks (closures)
1447//===----------------------------------------------------------------------===//
1448
1449void test_blocks_1_pos(void) {
1450  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}}
1451  ^{}();
1452}
1453
1454void test_blocks_1_indirect_release(void) {
1455  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1456  ^{ [number release]; }();
1457}
1458
1459void test_blocks_1_indirect_retain(void) {
1460  // Eventually this should be reported as a leak.
1461  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1462  ^{ [number retain]; }();
1463}
1464
1465void test_blocks_1_indirect_release_via_call(void) {
1466  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning
1467  ^(NSObject *o){ [o release]; }(number);
1468}
1469
1470void test_blocks_1_indirect_retain_via_call(void) {
1471  NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning {{leak}}
1472  ^(NSObject *o){ [o retain]; }(number);
1473}
1474
1475//===--------------------------------------------------------------------===//
1476// Test sending message to super that returns an object alias.  Previously
1477// this caused a crash in the analyzer.
1478//===--------------------------------------------------------------------===//
1479
1480@interface Rdar8015556 : NSObject {} @end
1481@implementation Rdar8015556
1482- (id)retain {
1483  return [super retain];
1484}
1485@end
1486
1487// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions
1488// detector.
1489
1490@protocol Prot_R8272168 @end
1491Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168();
1492void r8272168() {
1493  GetAClassThatImplementsProt_R8272168();
1494}
1495
1496// Test case for <rdar://problem/8356342>, which in the past triggered
1497// a false positive.
1498@interface RDar8356342
1499- (NSDate*) rdar8356342:(NSDate *)inValue;
1500@end
1501
1502@implementation RDar8356342
1503- (NSDate*) rdar8356342:(NSDate*)inValue {
1504  NSDate *outValue = inValue;
1505  if (outValue == 0)
1506    outValue = [[NSDate alloc] init]; // no-warning
1507
1508  if (outValue != inValue)
1509    [outValue autorelease];
1510
1511  return outValue;
1512}
1513@end
1514
1515// <rdar://problem/8724287> - This test case previously crashed because
1516// of a bug in BugReporter.
1517extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key);
1518typedef struct __CFError * CFErrorRef;
1519extern const CFStringRef kCFErrorUnderlyingErrorKey;
1520extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err);
1521static void rdar_8724287(CFErrorRef error)
1522{
1523    CFErrorRef error_to_dump;
1524
1525    error_to_dump = error;
1526    while (error_to_dump != ((void*)0)) {
1527        CFDictionaryRef info;
1528
1529        info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object}}
1530
1531        if (info != ((void*)0)) {
1532        }
1533
1534        error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey);
1535    }
1536}
1537
1538// <rdar://problem/9234108> - Make sure the model applies cf_consumed
1539// correctly in argument positions besides the first.
1540extern void *CFStringCreate(void);
1541extern void rdar_9234108_helper(void *key, void * CF_CONSUMED value);
1542void rdar_9234108() {
1543  rdar_9234108_helper(0, CFStringCreate());
1544}
1545
1546// <rdar://problem/9726279> - Make sure that objc_method_family works
1547// to override naming conventions.
1548struct TwoDoubles {
1549  double one;
1550  double two;
1551};
1552typedef struct TwoDoubles TwoDoubles;
1553
1554@interface NSValue (Mine)
1555- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles __attribute__((objc_method_family(init)));
1556@end
1557
1558@implementation NSValue (Mine)
1559- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles
1560{
1561  return [self init];
1562}
1563@end
1564
1565void rdar9726279() {
1566  TwoDoubles twoDoubles = { 0.0, 0.0 };
1567  NSValue *value = [[NSValue alloc] _prefix_initWithTwoDoubles:twoDoubles];
1568  [value release];
1569}
1570
1571// <rdar://problem/9732321>
1572// Test camelcase support for CF conventions.  While Core Foundation APIs
1573// don't use camel casing, other code is allowed to use it.
1574CFArrayRef camelcase_create_1() {
1575  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1576}
1577
1578CFArrayRef camelcase_createno() {
1579  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1580}
1581
1582CFArrayRef camelcase_copy() {
1583  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1584}
1585
1586CFArrayRef camelcase_copying() {
1587  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1588}
1589
1590CFArrayRef copyCamelCase() {
1591  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1592}
1593
1594CFArrayRef __copyCamelCase() {
1595  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1596}
1597
1598CFArrayRef __createCamelCase() {
1599  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1600}
1601
1602CFArrayRef camel_create() {
1603  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1604}
1605
1606
1607CFArrayRef camel_creat() {
1608  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1609}
1610
1611CFArrayRef camel_copy() {
1612  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1613}
1614
1615CFArrayRef camel_copyMachine() {
1616  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
1617}
1618
1619CFArrayRef camel_copymachine() {
1620  return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}}
1621}
1622
1623// rdar://problem/8024350
1624@protocol F18P
1625- (id) clone;
1626@end
1627@interface F18 : NSObject<F18P> @end
1628@interface F18(Cat)
1629- (id) clone NS_RETURNS_RETAINED;
1630@end
1631
1632@implementation F18
1633- (id) clone {
1634  return [F18 alloc];
1635}
1636@end
1637
1638// Radar 6582778.
1639void rdar6582778(void) {
1640  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
1641  CFTypeRef vals[] = { CFDateCreate(0, t) }; // expected-warning {{leak}}
1642}
1643
1644CFTypeRef global;
1645
1646void rdar6582778_2(void) {
1647  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
1648  global = CFDateCreate(0, t); // no-warning
1649}
1650
1651// <rdar://problem/10232019> - Test that objects passed to containers
1652// are marked "escaped".
1653
1654void rdar10232019() {
1655  NSMutableArray *array = [NSMutableArray array];
1656
1657  NSString *string = [[NSString alloc] initWithUTF8String:"foo"];
1658  [array addObject:string];
1659  [string release];
1660
1661  NSString *otherString = [string stringByAppendingString:@"bar"]; // no-warning
1662  NSLog(@"%@", otherString);
1663}
1664
1665void rdar10232019_positive() {
1666  NSMutableArray *array = [NSMutableArray array];
1667
1668  NSString *string = [[NSString alloc] initWithUTF8String:"foo"];
1669  [string release];
1670
1671  NSString *otherString = [string stringByAppendingString:@"bar"]; // expected-warning {{Reference-counted object is used after it is release}}
1672  NSLog(@"%@", otherString);
1673}
1674
1675// RetainCountChecker support for XPC.
1676// <rdar://problem/9658496>
1677typedef void * xpc_object_t;
1678xpc_object_t _CFXPCCreateXPCObjectFromCFObject(CFTypeRef cf);
1679void xpc_release(xpc_object_t object);
1680
1681void rdar9658496() {
1682  CFStringRef cf;
1683  xpc_object_t xpc;
1684  cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning
1685  xpc = _CFXPCCreateXPCObjectFromCFObject( cf );
1686  CFRelease(cf);
1687  xpc_release(xpc);
1688}
1689
1690// Support annotations with method families.
1691@interface RDar10824732 : NSObject
1692- (id)initWithObj:(id CF_CONSUMED)obj;
1693@end
1694
1695@implementation RDar10824732
1696- (id)initWithObj:(id)obj {
1697  [obj release];
1698  return [super init];
1699}
1700@end
1701
1702void rdar_10824732() {
1703  @autoreleasepool {
1704    NSString *obj = @"test";
1705    RDar10824732 *foo = [[RDar10824732 alloc] initWithObj:obj]; // no-warning
1706    [foo release];
1707  }
1708}
1709
1710// Stop tracking objects passed to functions, which take callbacks as parameters.
1711// radar://10973977
1712typedef int (*CloseCallback) (void *);
1713void ReaderForIO(CloseCallback ioclose, void *ioctx);
1714int IOClose(void *context);
1715
1716@protocol SInS <NSObject>
1717@end
1718
1719@interface radar10973977 : NSObject
1720- (id<SInS>)inputS;
1721- (void)reader;
1722@end
1723
1724@implementation radar10973977
1725- (void)reader
1726{
1727    id<SInS> inputS = [[self inputS] retain];
1728    ReaderForIO(IOClose, inputS);
1729}
1730- (id<SInS>)inputS
1731{
1732    return 0;
1733}
1734@end
1735
1736// Object escapes through a selector callback: radar://11398514
1737extern id NSApp;
1738@interface MySheetController
1739- (id<SInS>)inputS;
1740- (void)showDoSomethingSheetAction:(id)action;
1741- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo;
1742@end
1743
1744@implementation MySheetController
1745- (id<SInS>)inputS {
1746    return 0;
1747}
1748- (void)showDoSomethingSheetAction:(id)action {
1749  id<SInS> inputS = [[self inputS] retain]; 
1750  [NSApp beginSheet:0
1751         modalForWindow:0
1752         modalDelegate:0
1753         didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:)
1754         contextInfo:(void *)inputS]; // no - warning
1755}
1756- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo {
1757   
1758      id contextObject = (id)contextInfo;
1759      [contextObject release];
1760}
1761@end
1762//===----------------------------------------------------------------------===//
1763// Test returning allocated memory in a struct.
1764//
1765// We currently don't have a general way to track pointers that "escape".
1766// Here we test that RetainCountChecker doesn't get excited about returning
1767// allocated CF objects in struct fields.
1768//===----------------------------------------------------------------------===//
1769void *malloc(size_t);
1770struct rdar11104566 { CFStringRef myStr; };
1771struct rdar11104566 test_rdar11104566() {
1772  CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning
1773  struct rdar11104566 V;
1774  V.myStr = cf;
1775  return V; // no-warning
1776}
1777
1778struct rdar11104566 *test_2_rdar11104566() {
1779  CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning
1780  struct rdar11104566 *V = (struct rdar11104566 *) malloc(sizeof(*V));
1781  V->myStr = cf;
1782  return V; // no-warning
1783}
1784
1785//===----------------------------------------------------------------------===//
1786// ObjC literals support.
1787//===----------------------------------------------------------------------===//
1788
1789void test_objc_arrays() {
1790    { // CASE ONE -- OBJECT IN ARRAY CREATED DIRECTLY
1791        NSObject *o = [[NSObject alloc] init];
1792        NSArray *a = [[NSArray alloc] initWithObjects:o, (void*)0]; // expected-warning {{leak}}
1793        [o release];
1794        [a description];
1795        [o description];
1796    }
1797
1798    { // CASE TWO -- OBJECT IN ARRAY CREATED BY DUPING AUTORELEASED ARRAY
1799        NSObject *o = [[NSObject alloc] init];
1800        NSArray *a1 = [NSArray arrayWithObjects:o, (void*)0];
1801        NSArray *a2 = [[NSArray alloc] initWithArray:a1]; // expected-warning {{leak}}
1802        [o release];        
1803        [a2 description];
1804        [o description];
1805    }
1806
1807    { // CASE THREE -- OBJECT IN RETAINED @[]
1808        NSObject *o = [[NSObject alloc] init];
1809        NSArray *a3 = [@[o] retain]; // expected-warning {{leak}}
1810        [o release];        
1811        [a3 description];
1812        [o description];
1813    }
1814    
1815    { // CASE FOUR -- OBJECT IN ARRAY CREATED BY DUPING @[]
1816        NSObject *o = [[NSObject alloc] init];
1817        NSArray *a = [[NSArray alloc] initWithArray:@[o]]; // expected-warning {{leak}}
1818        [o release];
1819        
1820        [a description];
1821        [o description];
1822    }
1823    
1824    { // CASE FIVE -- OBJECT IN RETAINED @{}
1825        NSValue *o = [[NSValue alloc] init];
1826        NSDictionary *a = [@{o : o} retain]; // expected-warning {{leak}}
1827        [o release];
1828        
1829        [a description];
1830        [o description];
1831    }
1832}
1833
1834void test_objc_integer_literals() {
1835  id value = [@1 retain]; // expected-warning {{leak}}
1836  [value description];
1837}
1838
1839void test_objc_boxed_expressions(int x, const char *y) {
1840  id value = [@(x) retain]; // expected-warning {{leak}}
1841  [value description];
1842
1843  value = [@(y) retain]; // expected-warning {{leak}}
1844  [value description];
1845}
1846
1847// Test NSLog doesn't escape tracked objects.
1848void rdar11400885(int y)
1849{
1850  @autoreleasepool {
1851    NSString *printString;
1852    if(y > 2)
1853      printString = [[NSString alloc] init];
1854    else
1855      printString = [[NSString alloc] init];
1856    NSLog(@"Once %@", printString);
1857    [printString release];
1858    NSLog(@"Again: %@", printString); // expected-warning {{Reference-counted object is used after it is released}}
1859  }
1860}
1861
1862id makeCollectableNonLeak() {
1863  extern CFTypeRef CFCreateSomething();
1864
1865  CFTypeRef object = CFCreateSomething(); // +1
1866  CFRetain(object); // +2
1867  id objCObject = NSMakeCollectable(object); // +2
1868  [objCObject release]; // +1
1869  return [objCObject autorelease]; // +0
1870}
1871
1872
1873void consumeAndStopTracking(id NS_CONSUMED obj, void (^callback)(void));
1874void CFConsumeAndStopTracking(CFTypeRef CF_CONSUMED obj, void (^callback)(void));
1875
1876void testConsumeAndStopTracking() {
1877  id retained = [@[] retain]; // +1
1878  consumeAndStopTracking(retained, ^{}); // no-warning
1879
1880  id doubleRetained = [[@[] retain] retain]; // +2
1881  consumeAndStopTracking(doubleRetained, ^{
1882    [doubleRetained release];
1883  }); // no-warning
1884
1885  id unretained = @[]; // +0
1886  consumeAndStopTracking(unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
1887}
1888
1889void testCFConsumeAndStopTracking() {
1890  id retained = [@[] retain]; // +1
1891  CFConsumeAndStopTracking((CFTypeRef)retained, ^{}); // no-warning
1892
1893  id doubleRetained = [[@[] retain] retain]; // +2
1894  CFConsumeAndStopTracking((CFTypeRef)doubleRetained, ^{
1895    [doubleRetained release];
1896  }); // no-warning
1897
1898  id unretained = @[]; // +0
1899  CFConsumeAndStopTracking((CFTypeRef)unretained, ^{}); // expected-warning {{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
1900}
1901//===----------------------------------------------------------------------===//
1902// Test 'pragma clang arc_cf_code_audited' support.
1903//===----------------------------------------------------------------------===//
1904
1905typedef void *MyCFType;
1906#pragma clang arc_cf_code_audited begin
1907MyCFType CreateMyCFType();
1908#pragma clang arc_cf_code_audited end 
1909    
1910void test_custom_cf() {
1911  MyCFType x = CreateMyCFType(); // expected-warning {{leak of an object stored into 'x'}}
1912}
1913
1914//===----------------------------------------------------------------------===//
1915// Test calling CFPlugInInstanceCreate, which appears in CF but doesn't
1916// return a CF object.
1917//===----------------------------------------------------------------------===//
1918
1919void test_CFPlugInInstanceCreate(CFUUIDRef factoryUUID, CFUUIDRef typeUUID) {
1920  CFPlugInInstanceCreate(kCFAllocatorDefault, factoryUUID, typeUUID); // no-warning
1921}
1922