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Diffstat (limited to 'clang/test/Analysis/retain-release.m')
| -rw-r--r-- | clang/test/Analysis/retain-release.m | 1741 |
1 files changed, 1741 insertions, 0 deletions
diff --git a/clang/test/Analysis/retain-release.m b/clang/test/Analysis/retain-release.m new file mode 100644 index 0000000..06c510e --- /dev/null +++ b/clang/test/Analysis/retain-release.m @@ -0,0 +1,1741 @@ +// 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 +// 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 + +#if __has_feature(attribute_ns_returns_retained) +#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained)) +#endif +#if __has_feature(attribute_cf_returns_retained) +#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained)) +#endif +#if __has_feature(attribute_ns_returns_not_retained) +#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained)) +#endif +#if __has_feature(attribute_cf_returns_not_retained) +#define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained)) +#endif +#if __has_feature(attribute_ns_consumes_self) +#define NS_CONSUMES_SELF __attribute__((ns_consumes_self)) +#endif +#if __has_feature(attribute_ns_consumed) +#define NS_CONSUMED __attribute__((ns_consumed)) +#endif +#if __has_feature(attribute_cf_consumed) +#define CF_CONSUMED __attribute__((cf_consumed)) +#endif + +//===----------------------------------------------------------------------===// +// The following code is reduced using delta-debugging from Mac OS X headers: +// +// #include <Cocoa/Cocoa.h> +// #include <CoreFoundation/CoreFoundation.h> +// #include <DiskArbitration/DiskArbitration.h> +// #include <QuartzCore/QuartzCore.h> +// #include <Quartz/Quartz.h> +// #include <IOKit/IOKitLib.h> +// +// It includes the basic definitions for the test cases below. +//===----------------------------------------------------------------------===// + +typedef unsigned int __darwin_natural_t; +typedef unsigned long uintptr_t; +typedef unsigned int uint32_t; +typedef unsigned long long uint64_t; +typedef unsigned int UInt32; +typedef signed long CFIndex; +typedef CFIndex CFByteOrder; +typedef struct { + CFIndex location; + CFIndex length; +} CFRange; +static __inline__ __attribute__((always_inline)) CFRange CFRangeMake(CFIndex loc, CFIndex len) { + CFRange range; + range.location = loc; + range.length = len; + return range; +} +typedef const void * CFTypeRef; +typedef const struct __CFString * CFStringRef; +typedef const struct __CFAllocator * CFAllocatorRef; +extern const CFAllocatorRef kCFAllocatorDefault; +extern CFTypeRef CFRetain(CFTypeRef cf); +extern void CFRelease(CFTypeRef cf); +typedef struct { +} +CFArrayCallBacks; +extern const CFArrayCallBacks kCFTypeArrayCallBacks; +typedef const struct __CFArray * CFArrayRef; +typedef struct __CFArray * CFMutableArrayRef; +extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks); +extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx); +extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value); +typedef struct { +} +CFDictionaryKeyCallBacks; +extern const CFDictionaryKeyCallBacks kCFTypeDictionaryKeyCallBacks; +typedef struct { +} +CFDictionaryValueCallBacks; +extern const CFDictionaryValueCallBacks kCFTypeDictionaryValueCallBacks; +typedef const struct __CFDictionary * CFDictionaryRef; +typedef struct __CFDictionary * CFMutableDictionaryRef; +extern CFMutableDictionaryRef CFDictionaryCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFDictionaryKeyCallBacks *keyCallBacks, const CFDictionaryValueCallBacks *valueCallBacks); +typedef UInt32 CFStringEncoding; +enum { +kCFStringEncodingMacRoman = 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 }; +extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding); +typedef double CFTimeInterval; +typedef CFTimeInterval CFAbsoluteTime; +extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void); +typedef const struct __CFDate * CFDateRef; +extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at); +extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate); +typedef __darwin_natural_t natural_t; +typedef natural_t mach_port_name_t; +typedef mach_port_name_t mach_port_t; +typedef int kern_return_t; +typedef kern_return_t mach_error_t; +enum { +kCFNumberSInt8Type = 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 }; +typedef CFIndex CFNumberType; +typedef const struct __CFNumber * CFNumberRef; +extern CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr); +typedef const struct __CFAttributedString *CFAttributedStringRef; +typedef struct __CFAttributedString *CFMutableAttributedStringRef; +extern CFAttributedStringRef CFAttributedStringCreate(CFAllocatorRef alloc, CFStringRef str, CFDictionaryRef attributes) ; +extern CFMutableAttributedStringRef CFAttributedStringCreateMutableCopy(CFAllocatorRef alloc, CFIndex maxLength, CFAttributedStringRef aStr) ; +extern void CFAttributedStringSetAttribute(CFMutableAttributedStringRef aStr, CFRange range, CFStringRef attrName, CFTypeRef value) ; +typedef signed char BOOL; +typedef unsigned long NSUInteger; +@class NSString, Protocol; +extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2))); +typedef struct _NSZone NSZone; +@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; +@protocol NSObject +- (BOOL)isEqual:(id)object; +- (id)retain; +- (oneway void)release; +- (id)autorelease; +- (NSString *)description; +- (id)init; +@end +@protocol NSCopying +- (id)copyWithZone:(NSZone *)zone; +@end +@protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; +@end +@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; +@end +@interface NSObject <NSObject> {} ++ (id)allocWithZone:(NSZone *)zone; ++ (id)alloc; +- (void)dealloc; +@end +@interface NSObject (NSCoderMethods) +- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder; +@end +extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone); +typedef struct { +} +NSFastEnumerationState; +@protocol NSFastEnumeration +- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len; +@end +@class NSString, NSDictionary; +@interface NSValue : NSObject <NSCopying, NSCoding> - (void)getValue:(void *)value; +@end @interface NSNumber : NSValue - (char)charValue; +- (id)initWithInt:(int)value; +@end @class NSString; +@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> +- (NSUInteger)count; +- (id)initWithObjects:(const id [])objects count:(NSUInteger)cnt; ++ (id)arrayWithObject:(id)anObject; ++ (id)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt; ++ (id)arrayWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); +- (id)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1))); +- (id)initWithArray:(NSArray *)array; +@end @interface NSArray (NSArrayCreation) + (id)array; +@end @interface NSAutoreleasePool : NSObject { +} +- (void)drain; +@end extern NSString * const NSBundleDidLoadNotification; +typedef double NSTimeInterval; +@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; +@end typedef unsigned short unichar; +@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> +- (NSUInteger)length; +- (NSString *)stringByAppendingString:(NSString *)aString; +- ( const char *)UTF8String; +- (id)initWithUTF8String:(const char *)nullTerminatedCString; ++ (id)stringWithUTF8String:(const char *)nullTerminatedCString; +@end @class NSString, NSURL, NSError; +@interface NSData : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length; ++ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length; ++ (id)dataWithBytesNoCopy:(void *)bytes length:(NSUInteger)length freeWhenDone:(BOOL)b; +@end @class NSLocale, NSDate, NSCalendar, NSTimeZone, NSError, NSArray, NSMutableDictionary; +@interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> +- (NSUInteger)count; ++ (id)dictionaryWithObjects:(NSArray *)objects forKeys:(NSArray *)keys; ++ (id)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt; +@end +@interface NSMutableDictionary : NSDictionary - (void)removeObjectForKey:(id)aKey; +- (void)setObject:(id)anObject forKey:(id)aKey; +@end @interface NSMutableDictionary (NSMutableDictionaryCreation) + (id)dictionaryWithCapacity:(NSUInteger)numItems; +@end typedef double CGFloat; +struct CGSize { +}; +typedef struct CGSize CGSize; +struct CGRect { +}; +typedef struct CGRect CGRect; +typedef mach_port_t io_object_t; +typedef char io_name_t[128]; +typedef io_object_t io_iterator_t; +typedef io_object_t io_service_t; +typedef struct IONotificationPort * IONotificationPortRef; +typedef void (*IOServiceMatchingCallback)( void * refcon, io_iterator_t iterator ); +io_service_t IOServiceGetMatchingService( mach_port_t masterPort, CFDictionaryRef matching ); +kern_return_t IOServiceGetMatchingServices( mach_port_t masterPort, CFDictionaryRef matching, io_iterator_t * existing ); +kern_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)); +kern_return_t IOServiceAddMatchingNotification( IONotificationPortRef notifyPort, const io_name_t notificationType, CFDictionaryRef matching, IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification ); +CFMutableDictionaryRef IOServiceMatching( const char * name ); +CFMutableDictionaryRef IOServiceNameMatching( const char * name ); +CFMutableDictionaryRef IOBSDNameMatching( mach_port_t masterPort, uint32_t options, const char * bsdName ); +CFMutableDictionaryRef IOOpenFirmwarePathMatching( mach_port_t masterPort, uint32_t options, const char * path ); +CFMutableDictionaryRef IORegistryEntryIDMatching( uint64_t entryID ); +typedef struct __DASession * DASessionRef; +extern DASessionRef DASessionCreate( CFAllocatorRef allocator ); +typedef struct __DADisk * DADiskRef; +extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name ); +extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media ); +extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk ); +extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk ); +@interface NSTask : NSObject - (id)init; +@end typedef struct CGColorSpace *CGColorSpaceRef; +typedef struct CGImage *CGImageRef; +typedef struct CGLayer *CGLayerRef; +@interface NSResponder : NSObject <NSCoding> { +} +@end @protocol NSAnimatablePropertyContainer - (id)animator; +@end extern NSString *NSAnimationTriggerOrderIn ; +@interface NSView : NSResponder <NSAnimatablePropertyContainer> { +} +@end @protocol NSValidatedUserInterfaceItem - (SEL)action; +@end @protocol NSUserInterfaceValidations - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem; +@end @class NSDate, NSDictionary, NSError, NSException, NSNotification; +@interface NSApplication : NSResponder <NSUserInterfaceValidations> { +} +@end enum { +NSTerminateCancel = 0, NSTerminateNow = 1, NSTerminateLater = 2 }; +typedef NSUInteger NSApplicationTerminateReply; +@protocol NSApplicationDelegate <NSObject> @optional - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender; +@end @class NSAttributedString, NSEvent, NSFont, NSFormatter, NSImage, NSMenu, NSText, NSView, NSTextView; +@interface NSCell : NSObject <NSCopying, NSCoding> { +} +@end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError; +typedef struct { +} +CVTimeStamp; +@interface CIImage : NSObject <NSCoding, NSCopying> { +} +typedef int CIFormat; +@end enum { +kDAReturnSuccess = 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 }; +typedef mach_error_t DAReturn; +typedef const struct __DADissenter * DADissenterRef; +extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string ); +@interface CIContext: NSObject { +} +- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r; +- (CGImageRef)createCGImage:(CIImage *)im fromRect:(CGRect)r format:(CIFormat)f colorSpace:(CGColorSpaceRef)cs; +- (CGLayerRef)createCGLayerWithSize:(CGSize)size info:(CFDictionaryRef)d; +@end extern NSString* const QCRendererEventKey; +@protocol QCCompositionRenderer - (NSDictionary*) attributes; +@end @interface QCRenderer : NSObject <QCCompositionRenderer> { +} +- (id) createSnapshotImageOfType:(NSString*)type; +@end extern NSString* const QCViewDidStartRenderingNotification; +@interface QCView : NSView <QCCompositionRenderer> { +} +- (id) createSnapshotImageOfType:(NSString*)type; +@end enum { +ICEXIFOrientation1 = 1, ICEXIFOrientation2 = 2, ICEXIFOrientation3 = 3, ICEXIFOrientation4 = 4, ICEXIFOrientation5 = 5, ICEXIFOrientation6 = 6, ICEXIFOrientation7 = 7, ICEXIFOrientation8 = 8, }; +@class ICDevice; +@protocol ICDeviceDelegate <NSObject> @required - (void)didRemoveDevice:(ICDevice*)device; +@end extern NSString *const ICScannerStatusWarmingUp; +@class ICScannerDevice; +@protocol ICScannerDeviceDelegate <ICDeviceDelegate> @optional - (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner; +@end + +typedef long unsigned int __darwin_size_t; +typedef __darwin_size_t size_t; +typedef unsigned long CFTypeID; +struct CGPoint { + CGFloat x; + CGFloat y; +}; +typedef struct CGPoint CGPoint; +typedef struct CGGradient *CGGradientRef; +typedef uint32_t CGGradientDrawingOptions; +extern CFTypeID CGGradientGetTypeID(void); +extern CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef + space, const CGFloat components[], const CGFloat locations[], size_t count); +extern CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef space, + CFArrayRef colors, const CGFloat locations[]); +extern CGGradientRef CGGradientRetain(CGGradientRef gradient); +extern void CGGradientRelease(CGGradientRef gradient); +typedef struct CGContext *CGContextRef; +extern void CGContextDrawLinearGradient(CGContextRef context, + CGGradientRef gradient, CGPoint startPoint, CGPoint endPoint, + CGGradientDrawingOptions options); +extern CGColorSpaceRef CGColorSpaceCreateDeviceRGB(void); + +@interface NSMutableArray : NSObject +- (void)addObject:(id)object; ++ (id)array; +@end + + +//===----------------------------------------------------------------------===// +// Test cases. +//===----------------------------------------------------------------------===// + +CFAbsoluteTime f1() { + CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); + CFDateRef date = CFDateCreate(0, t); + CFRetain(date); + CFRelease(date); + CFDateGetAbsoluteTime(date); // no-warning + CFRelease(date); + t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} + return t; +} + +CFAbsoluteTime f2() { + CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); + CFDateRef date = CFDateCreate(0, t); + [((NSDate*) date) retain]; + CFRelease(date); + CFDateGetAbsoluteTime(date); // no-warning + [((NSDate*) date) release]; + t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released}} + return t; +} + + +NSDate* global_x; + +// Test to see if we supresss an error when we store the pointer +// to a global. + +CFAbsoluteTime f3() { + CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); + CFDateRef date = CFDateCreate(0, t); + [((NSDate*) date) retain]; + CFRelease(date); + CFDateGetAbsoluteTime(date); // no-warning + global_x = (NSDate*) date; + [((NSDate*) date) release]; + t = CFDateGetAbsoluteTime(date); // no-warning + return t; +} + +//--------------------------------------------------------------------------- +// Test case 'f4' differs for region store and basic store. See +// retain-release-region-store.m and retain-release-basic-store.m. +//--------------------------------------------------------------------------- + +// Test a leak. + +CFAbsoluteTime f5(int x) { + CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); + CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}} + + if (x) + CFRelease(date); + + return t; +} + +// Test a leak involving the return. + +CFDateRef f6(int x) { + CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning{{leak}} + CFRetain(date); + return date; +} + +// Test a leak involving an overwrite. + +CFDateRef f7() { + CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); //expected-warning{{leak}} + CFRetain(date); + date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning {{leak}} + return date; +} + +// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and +// has the word create. +CFDateRef MyDateCreate(); + +CFDateRef f8() { + CFDateRef date = MyDateCreate(); // expected-warning{{leak}} + CFRetain(date); + return date; +} + +__attribute__((cf_returns_retained)) CFDateRef f9() { + CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // no-warning + int *p = 0; + // When allocations fail, CFDateCreate can return null. + if (!date) *p = 1; // expected-warning{{null}} + return date; +} + +// Handle DiskArbitration API: +// +// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/ +// +void f10(io_service_t media, DADiskRef d, CFStringRef s) { + DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}} + if (disk) NSLog(@"ok"); + + disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}} + if (disk) NSLog(@"ok"); + + CFDictionaryRef dict = DADiskCopyDescription(d); // expected-warning{{leak}} + if (dict) NSLog(@"ok"); + + disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}} + if (disk) NSLog(@"ok"); + + DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault, // expected-warning{{leak}} + kDAReturnSuccess, s); + if (dissenter) NSLog(@"ok"); + + DASessionRef session = DASessionCreate(kCFAllocatorDefault); // expected-warning{{leak}} + if (session) NSLog(@"ok"); +} + +// Test retain/release checker with CFString and CFMutableArray. +void f11() { + // Create the array. + CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); + + // Create a string. + CFStringRef s1 = CFStringCreateWithCString(0, "hello world", + kCFStringEncodingUTF8); + + // Add the string to the array. + CFArrayAppendValue(A, s1); + + // Decrement the reference count. + CFRelease(s1); // no-warning + + // Get the string. We don't own it. + s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0); + + // Release the array. + CFRelease(A); // no-warning + + // Release the string. This is a bug. + CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}} +} + +// PR 3337: Handle functions declared using typedefs. +typedef CFTypeRef CREATEFUN(); +CREATEFUN MyCreateFun; + +void f12() { + CFTypeRef o = MyCreateFun(); // expected-warning {{leak}} +} + +void f13_autorelease() { + CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning + [(id) A autorelease]; // no-warning +} + +void f13_autorelease_b() { + CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); + [(id) A autorelease]; + [(id) A autorelease]; // expected-warning{{Object sent -autorelease too many times}} +} + +CFMutableArrayRef f13_autorelease_c() { + CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); + [(id) A autorelease]; + [(id) A autorelease]; + return A; // expected-warning{{Object sent -autorelease too many times}} +} + +CFMutableArrayRef f13_autorelease_d() { + CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); + [(id) A autorelease]; + [(id) A autorelease]; + CFMutableArrayRef B = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Object sent -autorelease too many times}} + CFRelease(B); // no-warning + while (1) {} +} + + +// This case exercises the logic where the leak site is the same as the allocation site. +void f14_leakimmediately() { + CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}} +} + +// Test that we track an allocated object beyond the point where the *name* +// of the variable storing the reference is no longer live. +void f15() { + // Create the array. + CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); + CFMutableArrayRef *B = &A; + // At this point, the name 'A' is no longer live. + CFRelease(*B); // no-warning +} + +// Test when we pass NULL to CFRetain/CFRelease. +void f16(int x, CFTypeRef p) { + if (p) + return; + + if (x) { + CFRelease(p); // expected-warning{{Null pointer argument in call to CFRelease}} + } + else { + CFRetain(p); // expected-warning{{Null pointer argument in call to CFRetain}} + } +} + +// Test that an object is non-null after being CFRetained/CFReleased. +void f17(int x, CFTypeRef p) { + if (x) { + CFRelease(p); + if (!p) + CFRelease(0); // no-warning + } + else { + CFRetain(p); + if (!p) + CFRetain(0); // no-warning + } +} + +// Test basic tracking of ivars associated with 'self'. For the retain/release +// checker we currently do not want to flag leaks associated with stores +// of tracked objects to ivars. +@interface SelfIvarTest : NSObject { + id myObj; +} +- (void)test_self_tracking; +@end + +@implementation SelfIvarTest +- (void)test_self_tracking { + myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} +@end + +// Test return of non-owned objects in contexts where an owned object +// is expected. +@interface TestReturnNotOwnedWhenExpectedOwned +- (NSString*)newString; +@end + +@implementation TestReturnNotOwnedWhenExpectedOwned +- (NSString*)newString { + NSString *s = [NSString stringWithUTF8String:"hello"]; + return s; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} +} +@end + +// <rdar://problem/6659160> +int isFoo(char c); + +static void rdar_6659160(char *inkind, char *inname) +{ + // We currently expect that [NSObject alloc] cannot fail. This + // will be a toggled flag in the future. It can indeed return null, but + // Cocoa programmers generally aren't expected to reason about out-of-memory + // conditions. + NSString *kind = [[NSString alloc] initWithUTF8String:inkind]; // expected-warning{{leak}} + + // We do allow stringWithUTF8String to fail. This isn't really correct, as + // far as returning 0. In most error conditions it will throw an exception. + // If allocation fails it could return 0, but again this + // isn't expected. + NSString *name = [NSString stringWithUTF8String:inname]; + if(!name) + return; + + const char *kindC = 0; + const char *nameC = 0; + + // In both cases, we cannot reach a point down below where we + // dereference kindC or nameC with either being null. This is because + // we assume that [NSObject alloc] doesn't fail and that we have the guard + // up above. + + if(kind) + kindC = [kind UTF8String]; + if(name) + nameC = [name UTF8String]; + if(!isFoo(kindC[0])) // expected-warning{{null}} + return; + if(!isFoo(nameC[0])) // no-warning + return; + + [kind release]; + [name release]; // expected-warning{{Incorrect decrement of the reference count}} +} + +// PR 3677 - 'allocWithZone' should be treated as following the Cocoa naming +// conventions with respect to 'return'ing ownership. +@interface PR3677: NSObject @end +@implementation PR3677 ++ (id)allocWithZone:(NSZone *)inZone { + return [super allocWithZone:inZone]; // no-warning +} +@end + +// PR 3820 - Reason about calls to -dealloc +void pr3820_DeallocInsteadOfRelease(void) +{ + id foo = [[NSString alloc] init]; // no-warning + [foo dealloc]; + // foo is not leaked, since it has been deallocated. +} + +void pr3820_ReleaseAfterDealloc(void) +{ + id foo = [[NSString alloc] init]; + [foo dealloc]; + [foo release]; // expected-warning{{used after it is release}} + // NSInternalInconsistencyException: message sent to deallocated object +} + +void pr3820_DeallocAfterRelease(void) +{ + NSLog(@"\n\n[%s]", __FUNCTION__); + id foo = [[NSString alloc] init]; + [foo release]; + [foo dealloc]; // expected-warning{{used after it is released}} + // message sent to released object +} + +// From <rdar://problem/6704930>. The problem here is that 'length' binds to +// '($0 - 1)' after '--length', but SimpleConstraintManager doesn't know how to +// reason about '($0 - 1) > constant'. As a temporary hack, we drop the value +// of '($0 - 1)' and conjure a new symbol. +void rdar6704930(unsigned char *s, unsigned int length) { + NSString* name = 0; + if (s != 0) { + if (length > 0) { + while (length > 0) { + if (*s == ':') { + ++s; + --length; + name = [[NSString alloc] init]; // no-warning + break; + } + ++s; + --length; + } + if ((length == 0) && (name != 0)) { + [name release]; + name = 0; + } + if (length == 0) { // no ':' found -> use it all as name + name = [[NSString alloc] init]; // no-warning + } + } + } + + if (name != 0) { + [name release]; + } +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/6833332> +// One build of the analyzer accidentally stopped tracking the allocated +// object after the 'retain'. +//===----------------------------------------------------------------------===// + +@interface rdar_6833332 : NSObject <NSApplicationDelegate> { + NSWindow *window; +} +@property (nonatomic, retain) NSWindow *window; +@end + +@implementation rdar_6833332 +@synthesize window; +- (void)applicationDidFinishLaunching:(NSNotification *)aNotification { + NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} + + [dict setObject:@"foo" forKey:@"bar"]; + + NSLog(@"%@", dict); +} +- (void)dealloc { + [window release]; + [super dealloc]; +} + +- (void)radar10102244 { + NSMutableDictionary *dict = [[NSMutableDictionary dictionaryWithCapacity:4] retain]; // expected-warning{{leak}} + if (window) + NSLog(@"%@", window); +} +@end + +//===----------------------------------------------------------------------===// +// <rdar://problem/6257780> clang checker fails to catch use-after-release +//===----------------------------------------------------------------------===// + +int rdar_6257780_Case1() { + NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; + NSArray *array = [NSArray array]; + [array release]; // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} + [pool drain]; + return 0; +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/10640253> Analyzer is confused about NSAutoreleasePool -allocWithZone:. +//===----------------------------------------------------------------------===// + +void rdar_10640253_autorelease_allocWithZone() { + NSAutoreleasePool *pool = [[NSAutoreleasePool allocWithZone:(NSZone*)0] init]; + (void) pool; +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/6866843> Checker should understand new/setObject:/release constructs +//===----------------------------------------------------------------------===// + +void rdar_6866843() { + NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; + NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init]; + NSArray* array = [[NSArray alloc] init]; + [dictionary setObject:array forKey:@"key"]; + [array release]; + // Using 'array' here should be fine + NSLog(@"array = %@\n", array); // no-warning + // Now the array is released + [dictionary release]; + [pool drain]; +} + + +//===----------------------------------------------------------------------===// +// <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects +//===----------------------------------------------------------------------===// + +typedef CFTypeRef OtherRef; + +@interface RDar6877235 : NSObject {} +- (CFTypeRef)_copyCFTypeRef; +- (OtherRef)_copyOtherRef; +@end + +@implementation RDar6877235 +- (CFTypeRef)_copyCFTypeRef { + return [[NSString alloc] init]; // no-warning +} +- (OtherRef)_copyOtherRef { + return [[NSString alloc] init]; // no-warning +} +@end + +//===----------------------------------------------------------------------===// +//<rdar://problem/6320065> false positive - init method returns an object +// owned by caller +//===----------------------------------------------------------------------===// + +@interface RDar6320065 : NSObject { + NSString *_foo; +} +- (id)initReturningNewClass; +- (id)_initReturningNewClassBad; +- (id)initReturningNewClassBad2; +@end + +@interface RDar6320065Subclass : RDar6320065 +@end + +@implementation RDar6320065 +- (id)initReturningNewClass { + [self release]; + self = [[RDar6320065Subclass alloc] init]; // no-warning + return self; +} +- (id)_initReturningNewClassBad { + [self release]; + [[RDar6320065Subclass alloc] init]; // expected-warning {{leak}} + return self; +} +- (id)initReturningNewClassBad2 { + [self release]; + self = [[RDar6320065Subclass alloc] init]; + return [self autorelease]; // expected-warning{{Object with a +0 retain count returned to caller where a +1 (owning) retain count is expected}} +} + +@end + +@implementation RDar6320065Subclass +@end + +int RDar6320065_test() { + RDar6320065 *test = [[RDar6320065 alloc] init]; // no-warning + [test release]; + return 0; +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/7129086> -awakeAfterUsingCoder: returns an owned object +// and claims the receiver +//===----------------------------------------------------------------------===// + +@interface RDar7129086 : NSObject {} @end +@implementation RDar7129086 +- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder { + [self release]; // no-warning + return [NSString alloc]; // no-warning +} +@end + +//===----------------------------------------------------------------------===// +// <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a +// retained object +//===----------------------------------------------------------------------===// + +@interface RDar6859457 : NSObject {} +- (NSString*) NoCopyString; +- (NSString*) noCopyString; +@end + +@implementation RDar6859457 +- (NSString*) NoCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} +- (NSString*) noCopyString { return [[NSString alloc] init]; } // expected-warning{{leak}} +@end + +void test_RDar6859457(RDar6859457 *x, void *bytes, NSUInteger dataLength) { + [x NoCopyString]; // no-warning + [x noCopyString]; // no-warning + [NSData dataWithBytesNoCopy:bytes length:dataLength]; // no-warning + [NSData dataWithBytesNoCopy:bytes length:dataLength freeWhenDone:1]; // no-warning +} + +//===----------------------------------------------------------------------===// +// PR 4230 - an autorelease pool is not necessarily leaked during a premature +// return +//===----------------------------------------------------------------------===// + +static void PR4230(void) +{ + NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; // no-warning + NSString *object = [[[NSString alloc] init] autorelease]; // no-warning + return; +} + +//===----------------------------------------------------------------------===// +// Method name that has a null IdentifierInfo* for its first selector slot. +// This test just makes sure that we handle it. +//===----------------------------------------------------------------------===// + +@interface TestNullIdentifier +@end + +@implementation TestNullIdentifier ++ (id):(int)x, ... { + return [[NSString alloc] init]; // expected-warning{{leak}} +} +@end + +//===----------------------------------------------------------------------===// +// <rdar://problem/6893565> don't flag leaks for return types that cannot be +// determined to be CF types +//===----------------------------------------------------------------------===// + +// We don't know if 'struct s6893565' represents a Core Foundation type, so +// we shouldn't emit an error here. +typedef struct s6893565* TD6893565; + +@interface RDar6893565 {} +-(TD6893565)newThing; +@end + +@implementation RDar6893565 +-(TD6893565)newThing { + return (TD6893565) [[NSString alloc] init]; // no-warning +} +@end + +//===----------------------------------------------------------------------===// +// <rdar://problem/6902710> clang: false positives w/QC and CoreImage methods +//===----------------------------------------------------------------------===// + +void rdar6902710(QCView *view, QCRenderer *renderer, CIContext *context, + NSString *str, CIImage *img, CGRect rect, + CIFormat form, CGColorSpaceRef cs) { + [view createSnapshotImageOfType:str]; // expected-warning{{leak}} + [renderer createSnapshotImageOfType:str]; // expected-warning{{leak}} + [context createCGImage:img fromRect:rect]; // expected-warning{{leak}} + [context createCGImage:img fromRect:rect format:form colorSpace:cs]; // expected-warning{{leak}} +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:] +// misinterpreted by clang scan-build +//===----------------------------------------------------------------------===// + +void rdar6945561(CIContext *context, CGSize size, CFDictionaryRef d) { + [context createCGLayerWithSize:size info:d]; // expected-warning{{leak}} +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/6961230> add knowledge of IOKit functions to retain/release +// checker +//===----------------------------------------------------------------------===// + +void IOBSDNameMatching_wrapper(mach_port_t masterPort, uint32_t options, const char * bsdName) { + IOBSDNameMatching(masterPort, options, bsdName); // expected-warning{{leak}} +} + +void IOServiceMatching_wrapper(const char * name) { + IOServiceMatching(name); // expected-warning{{leak}} +} + +void IOServiceNameMatching_wrapper(const char * name) { + IOServiceNameMatching(name); // expected-warning{{leak}} +} + +CF_RETURNS_RETAINED CFDictionaryRef CreateDict(); + +void IOServiceAddNotification_wrapper(mach_port_t masterPort, const io_name_t notificationType, + mach_port_t wakePort, uintptr_t reference, io_iterator_t * notification ) { + + CFDictionaryRef matching = CreateDict(); + CFRelease(matching); + IOServiceAddNotification(masterPort, notificationType, matching, // expected-warning{{used after it is released}} expected-warning{{deprecated}} + wakePort, reference, notification); +} + +void IORegistryEntryIDMatching_wrapper(uint64_t entryID ) { + IORegistryEntryIDMatching(entryID); // expected-warning{{leak}} +} + +void IOOpenFirmwarePathMatching_wrapper(mach_port_t masterPort, uint32_t options, + const char * path) { + IOOpenFirmwarePathMatching(masterPort, options, path); // expected-warning{{leak}} +} + +void IOServiceGetMatchingService_wrapper(mach_port_t masterPort) { + CFDictionaryRef matching = CreateDict(); + IOServiceGetMatchingService(masterPort, matching); + CFRelease(matching); // expected-warning{{used after it is released}} +} + +void IOServiceGetMatchingServices_wrapper(mach_port_t masterPort, io_iterator_t *existing) { + CFDictionaryRef matching = CreateDict(); + IOServiceGetMatchingServices(masterPort, matching, existing); + CFRelease(matching); // expected-warning{{used after it is released}} +} + +void IOServiceAddMatchingNotification_wrapper(IONotificationPortRef notifyPort, const io_name_t notificationType, + IOServiceMatchingCallback callback, void * refCon, io_iterator_t * notification) { + + CFDictionaryRef matching = CreateDict(); + IOServiceAddMatchingNotification(notifyPort, notificationType, matching, callback, refCon, notification); + CFRelease(matching); // expected-warning{{used after it is released}} +} + +//===----------------------------------------------------------------------===// +// Test of handling objects whose references "escape" to containers. +//===----------------------------------------------------------------------===// + +void CFDictionaryAddValue(CFMutableDictionaryRef, void *, void *); + +// <rdar://problem/6539791> +void rdar_6539791(CFMutableDictionaryRef y, void* key, void* val_key) { + CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); + CFDictionaryAddValue(y, key, x); + CFRelease(x); // the dictionary keeps a reference, so the object isn't deallocated yet + signed z = 1; + CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); + if (value) { + CFDictionaryAddValue(x, val_key, (void*)value); // no-warning + CFRelease(value); + CFDictionaryAddValue(y, val_key, (void*)value); // no-warning + } +} + +// <rdar://problem/6560661> +// Same issue, except with "AppendValue" functions. +void rdar_6560661(CFMutableArrayRef x) { + signed z = 1; + CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); + // CFArrayAppendValue keeps a reference to value. + CFArrayAppendValue(x, value); + CFRelease(value); + CFRetain(value); + CFRelease(value); // no-warning +} + +// <rdar://problem/7152619> +// Same issue, excwept with "CFAttributeStringSetAttribute". +void rdar_7152619(CFStringRef str) { + CFAttributedStringRef string = CFAttributedStringCreate(kCFAllocatorDefault, str, 0); + CFMutableAttributedStringRef attrString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 100, string); + CFRelease(string); + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} + CFAttributedStringSetAttribute(attrString, CFRangeMake(0, 1), str, number); + [number release]; + [number retain]; + CFRelease(attrString); +} + +//===----------------------------------------------------------------------===// +// Test of handling CGGradientXXX functions. +//===----------------------------------------------------------------------===// + +void rdar_7184450(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, + CGPoint myEndPoint) { + size_t num_locations = 6; + CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; + CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, + x, // Start color + 207.0/255.0, 39.0/255.0, 39.0/255.0, x, + 147.0/255.0, 21.0/255.0, 22.0/255.0, x, + 175.0/255.0, 175.0/255.0, 175.0/255.0, x, + 255.0/255.0,255.0/255.0, 255.0/255.0, x, + 255.0/255.0,255.0/255.0, 255.0/255.0, x + }; // End color + + CGGradientRef myGradient = + CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), // expected-warning{{leak}} + components, locations, num_locations); + + CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, + 0); + CGGradientRelease(myGradient); +} + +void rdar_7184450_pos(CGContextRef myContext, CGFloat x, CGPoint myStartPoint, + CGPoint myEndPoint) { + size_t num_locations = 6; + CGFloat locations[6] = { 0.0, 0.265, 0.28, 0.31, 0.36, 1.0 }; + CGFloat components[28] = { 239.0/256.0, 167.0/256.0, 170.0/256.0, + x, // Start color + 207.0/255.0, 39.0/255.0, 39.0/255.0, x, + 147.0/255.0, 21.0/255.0, 22.0/255.0, x, + 175.0/255.0, 175.0/255.0, 175.0/255.0, x, + 255.0/255.0,255.0/255.0, 255.0/255.0, x, + 255.0/255.0,255.0/255.0, 255.0/255.0, x + }; // End color + + CGGradientRef myGradient = + CGGradientCreateWithColorComponents(CGColorSpaceCreateDeviceRGB(), components, locations, num_locations); // expected-warning 2 {{leak}} + + CGContextDrawLinearGradient(myContext, myGradient, myStartPoint, myEndPoint, + 0); +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/7299394> clang false positive: retained instance passed to +// thread in pthread_create marked as leak +// +// Until we have full IPA, the analyzer should stop tracking the reference +// count of objects passed to pthread_create. +// +//===----------------------------------------------------------------------===// + +struct _opaque_pthread_t {}; +struct _opaque_pthread_attr_t {}; +typedef struct _opaque_pthread_t *__darwin_pthread_t; +typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t; +typedef __darwin_pthread_t pthread_t; +typedef __darwin_pthread_attr_t pthread_attr_t; + +int pthread_create(pthread_t *, const pthread_attr_t *, + void *(*)(void *), void *); + +void *rdar_7299394_start_routine(void *p) { + [((id) p) release]; + return 0; +} +void rdar_7299394(pthread_attr_t *attr, pthread_t *thread, void *args) { + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + pthread_create(thread, attr, rdar_7299394_start_routine, number); +} +void rdar_7299394_positive(pthread_attr_t *attr, pthread_t *thread) { + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/7283567> False leak associated with call to +// CVPixelBufferCreateWithBytes () +// +// According to the Core Video Reference (ADC), CVPixelBufferCreateWithBytes and +// CVPixelBufferCreateWithPlanarBytes can release (via a callback) the +// pixel buffer object. These test cases show how the analyzer stops tracking +// the reference count for the objects passed for this argument. This +// could be made smarter. +//===----------------------------------------------------------------------===// + +typedef int int32_t; +typedef UInt32 FourCharCode; +typedef FourCharCode OSType; +typedef uint64_t CVOptionFlags; +typedef int32_t CVReturn; +typedef struct __CVBuffer *CVBufferRef; +typedef CVBufferRef CVImageBufferRef; +typedef CVImageBufferRef CVPixelBufferRef; +typedef void (*CVPixelBufferReleaseBytesCallback)( void *releaseRefCon, const void *baseAddress ); + +extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, + size_t width, + size_t height, + OSType pixelFormatType, + void *baseAddress, + size_t bytesPerRow, + CVPixelBufferReleaseBytesCallback releaseCallback, + void *releaseRefCon, + CFDictionaryRef pixelBufferAttributes, + CVPixelBufferRef *pixelBufferOut) ; + +typedef void (*CVPixelBufferReleasePlanarBytesCallback)( void *releaseRefCon, const void *dataPtr, size_t dataSize, size_t numberOfPlanes, const void *planeAddresses[] ); + +extern CVReturn CVPixelBufferCreateWithPlanarBytes(CFAllocatorRef allocator, + size_t width, + size_t height, + OSType pixelFormatType, + void *dataPtr, + size_t dataSize, + size_t numberOfPlanes, + void *planeBaseAddress[], + size_t planeWidth[], + size_t planeHeight[], + size_t planeBytesPerRow[], + CVPixelBufferReleasePlanarBytesCallback releaseCallback, + void *releaseRefCon, + CFDictionaryRef pixelBufferAttributes, + CVPixelBufferRef *pixelBufferOut) ; + +extern CVReturn CVPixelBufferCreateWithBytes(CFAllocatorRef allocator, + size_t width, + size_t height, + OSType pixelFormatType, + void *baseAddress, + size_t bytesPerRow, + CVPixelBufferReleaseBytesCallback releaseCallback, + void *releaseRefCon, + CFDictionaryRef pixelBufferAttributes, + CVPixelBufferRef *pixelBufferOut) ; + +CVReturn rdar_7283567(CFAllocatorRef allocator, size_t width, size_t height, + OSType pixelFormatType, void *baseAddress, + size_t bytesPerRow, + CVPixelBufferReleaseBytesCallback releaseCallback, + CFDictionaryRef pixelBufferAttributes, + CVPixelBufferRef *pixelBufferOut) { + + // For the allocated object, it doesn't really matter what type it is + // for the purpose of this test. All we want to show is that + // this is freed later by the callback. + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + + return CVPixelBufferCreateWithBytes(allocator, width, height, pixelFormatType, + baseAddress, bytesPerRow, releaseCallback, + number, // potentially released by callback + pixelBufferAttributes, pixelBufferOut) ; +} + +CVReturn rdar_7283567_2(CFAllocatorRef allocator, size_t width, size_t height, + OSType pixelFormatType, void *dataPtr, size_t dataSize, + size_t numberOfPlanes, void *planeBaseAddress[], + size_t planeWidth[], size_t planeHeight[], size_t planeBytesPerRow[], + CVPixelBufferReleasePlanarBytesCallback releaseCallback, + CFDictionaryRef pixelBufferAttributes, + CVPixelBufferRef *pixelBufferOut) { + + // For the allocated object, it doesn't really matter what type it is + // for the purpose of this test. All we want to show is that + // this is freed later by the callback. + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + + return CVPixelBufferCreateWithPlanarBytes(allocator, + width, height, pixelFormatType, dataPtr, dataSize, + numberOfPlanes, planeBaseAddress, planeWidth, + planeHeight, planeBytesPerRow, releaseCallback, + number, // potentially released by callback + pixelBufferAttributes, pixelBufferOut) ; +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/7358899> False leak associated with +// CGBitmapContextCreateWithData +//===----------------------------------------------------------------------===// +typedef uint32_t CGBitmapInfo; +typedef void (*CGBitmapContextReleaseDataCallback)(void *releaseInfo, void *data); + +CGContextRef CGBitmapContextCreateWithData(void *data, + size_t width, size_t height, size_t bitsPerComponent, + size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, + CGBitmapContextReleaseDataCallback releaseCallback, void *releaseInfo); + +void rdar_7358899(void *data, + size_t width, size_t height, size_t bitsPerComponent, + size_t bytesPerRow, CGColorSpaceRef space, CGBitmapInfo bitmapInfo, + CGBitmapContextReleaseDataCallback releaseCallback) { + + // For the allocated object, it doesn't really matter what type it is + // for the purpose of this test. All we want to show is that + // this is freed later by the callback. + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + + CGBitmapContextCreateWithData(data, width, height, bitsPerComponent, // expected-warning{{leak}} + bytesPerRow, space, bitmapInfo, releaseCallback, number); +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/7265711> allow 'new', 'copy', 'alloc', 'init' prefix to +// start before '_' when determining Cocoa fundamental rule +// +// Previously the retain/release checker just skipped prefixes before the +// first '_' entirely. Now the checker honors the prefix if it results in a +// recognizable naming convention (e.g., 'new', 'init'). +//===----------------------------------------------------------------------===// + +@interface RDar7265711 {} +- (id) new_stuff; +@end + +void rdar7265711_a(RDar7265711 *x) { + id y = [x new_stuff]; // expected-warning{{leak}} +} + +void rdar7265711_b(RDar7265711 *x) { + id y = [x new_stuff]; // no-warning + [y release]; +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/7306898> clang thinks [NSCursor dragCopyCursor] returns a +// retained reference +//===----------------------------------------------------------------------===// + +@interface NSCursor : NSObject ++ (NSCursor *)dragCopyCursor; +@end + +void rdar7306898(void) { + // 'dragCopyCursor' does not follow Cocoa's fundamental rule. It is a noun, not an sentence + // implying a 'copy' of something. + NSCursor *c = [NSCursor dragCopyCursor]; // no-warning + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} +} + +//===----------------------------------------------------------------------===// +// <rdar://problem/7252064> sending 'release', 'retain', etc. to a Class +// directly is not likely what the user intended +//===----------------------------------------------------------------------===// + +@interface RDar7252064 : NSObject @end +void rdar7252064(void) { + [RDar7252064 release]; // expected-warning{{The 'release' message should be sent to instances of class 'RDar7252064' and not the class directly}} + [RDar7252064 retain]; // expected-warning{{The 'retain' message should be sent to instances of class 'RDar7252064' and not the class directly}} + [RDar7252064 autorelease]; // expected-warning{{The 'autorelease' message should be sent to instances of class 'RDar7252064' and not the class directly}} + [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}} +} + +//===----------------------------------------------------------------------===// +// Tests of ownership attributes. +//===----------------------------------------------------------------------===// + +typedef NSString* MyStringTy; + +@protocol FooP; + +@interface TestOwnershipAttr : NSObject +- (NSString*) returnsAnOwnedString NS_RETURNS_RETAINED; // no-warning +- (NSString*) returnsAnOwnedCFString CF_RETURNS_RETAINED; // no-warning +- (MyStringTy) returnsAnOwnedTypedString NS_RETURNS_RETAINED; // no-warning +- (NSString*) newString NS_RETURNS_NOT_RETAINED; // no-warning +- (NSString*) newStringNoAttr; +- (int) returnsAnOwnedInt NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to methods that return an Objective-C object}} +- (id) pseudoInit NS_CONSUMES_SELF NS_RETURNS_RETAINED; ++ (void) consume:(id) NS_CONSUMED x; ++ (void) consume2:(id) CF_CONSUMED x; +@end + +static int ownership_attribute_doesnt_go_here NS_RETURNS_RETAINED; // expected-warning{{'ns_returns_retained' attribute only applies to functions and methods}} + +void test_attr_1(TestOwnershipAttr *X) { + NSString *str = [X returnsAnOwnedString]; // expected-warning{{leak}} +} + +void test_attr_1b(TestOwnershipAttr *X) { + NSString *str = [X returnsAnOwnedCFString]; // expected-warning{{leak}} +} + +void test_attr1c(TestOwnershipAttr *X) { + NSString *str = [X newString]; // no-warning + NSString *str2 = [X newStringNoAttr]; // expected-warning{{leak}} +} + +void testattr2_a() { + TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // expected-warning{{leak}} +} + +void testattr2_b() { + TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // expected-warning{{leak}} +} + +void testattr2_c() { + TestOwnershipAttr *x = [[TestOwnershipAttr alloc] pseudoInit]; // no-warning + [x release]; +} + +void testattr3() { + TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning + [TestOwnershipAttr consume:x]; + TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning + [TestOwnershipAttr consume2:y]; +} + +void consume_ns(id NS_CONSUMED x); +void consume_cf(id CF_CONSUMED x); + +void testattr4() { + TestOwnershipAttr *x = [TestOwnershipAttr alloc]; // no-warning + consume_ns(x); + TestOwnershipAttr *y = [TestOwnershipAttr alloc]; // no-warning + consume_cf(y); +} + + +@interface MyClassTestCFAttr : NSObject {} +- (NSDate*) returnsCFRetained CF_RETURNS_RETAINED; +- (CFDateRef) returnsCFRetainedAsCF CF_RETURNS_RETAINED; +- (CFDateRef) newCFRetainedAsCF CF_RETURNS_NOT_RETAINED; +- (CFDateRef) newCFRetainedAsCFNoAttr; +- (NSDate*) alsoReturnsRetained; +- (CFDateRef) alsoReturnsRetainedAsCF; +- (NSDate*) returnsNSRetained NS_RETURNS_RETAINED; +@end + +CF_RETURNS_RETAINED +CFDateRef returnsRetainedCFDate() { + return CFDateCreate(0, CFAbsoluteTimeGetCurrent()); +} + +@implementation MyClassTestCFAttr +- (NSDate*) returnsCFRetained { + return (NSDate*) returnsRetainedCFDate(); // No leak. +} + +- (CFDateRef) returnsCFRetainedAsCF { + return returnsRetainedCFDate(); // No leak. +} + +- (CFDateRef) newCFRetainedAsCF { + return (CFDateRef)[(id)[self returnsCFRetainedAsCF] autorelease]; +} + +- (CFDateRef) newCFRetainedAsCFNoAttr { + 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}} +} + +- (NSDate*) alsoReturnsRetained { + return (NSDate*) returnsRetainedCFDate(); // expected-warning{{leak}} +} + +- (CFDateRef) alsoReturnsRetainedAsCF { + return returnsRetainedCFDate(); // expected-warning{{leak}} +} + + +- (NSDate*) returnsNSRetained { + return (NSDate*) returnsRetainedCFDate(); // no-warning +} +@end + +//===----------------------------------------------------------------------===// +// Test that leaks post-dominated by "panic" functions are not reported. +// +// <rdar://problem/5905851> do not report a leak when post-dominated by a call +// to a noreturn or panic function +//===----------------------------------------------------------------------===// + +void panic() __attribute__((noreturn)); +void panic_not_in_hardcoded_list() __attribute__((noreturn)); + +void test_panic_negative() { + signed z = 1; + CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} +} + +void test_panic_positive() { + signed z = 1; + CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning + panic(); +} + +void test_panic_neg_2(int x) { + signed z = 1; + CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // expected-warning{{leak}} + if (x) + panic(); +} + +void test_panic_pos_2(int x) { + signed z = 1; + CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &z); // no-warning + if (x) + panic(); + if (!x) { + // This showed up in <rdar://problem/7796563>, where we silently missed checking + // the function type for noreturn. "panic()" is a hard-coded known panic function + // that isn't always noreturn. + panic_not_in_hardcoded_list(); + } +} + +//===----------------------------------------------------------------------===// +// Test uses of blocks (closures) +//===----------------------------------------------------------------------===// + +void test_blocks_1_pos(void) { + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // expected-warning{{leak}} + ^{}(); +} + +void test_blocks_1_indirect_release(void) { + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + ^{ [number release]; }(); +} + +void test_blocks_1_indirect_retain(void) { + // Eventually this should be reported as a leak. + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + ^{ [number retain]; }(); +} + +void test_blocks_1_indirect_release_via_call(void) { + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + ^(NSObject *o){ [o release]; }(number); +} + +void test_blocks_1_indirect_retain_via_call(void) { + // Eventually this should be reported as a leak. + NSNumber *number = [[NSNumber alloc] initWithInt:5]; // no-warning + ^(NSObject *o){ [o retain]; }(number); +} + +//===--------------------------------------------------------------------===// +// Test sending message to super that returns an object alias. Previously +// this caused a crash in the analyzer. +//===--------------------------------------------------------------------===// + +@interface Rdar8015556 : NSObject {} @end +@implementation Rdar8015556 +- (id)retain { + return [super retain]; +} +@end + +// <rdar://problem/8272168> - Correcly handle Class<...> in Cocoa Conventions +// detector. + +@protocol Prot_R8272168 @end +Class <Prot_R8272168> GetAClassThatImplementsProt_R8272168(); +void r8272168() { + GetAClassThatImplementsProt_R8272168(); +} + +// Test case for <rdar://problem/8356342>, which in the past triggered +// a false positive. +@interface RDar8356342 +- (NSDate*) rdar8356342:(NSDate *)inValue; +@end + +@implementation RDar8356342 +- (NSDate*) rdar8356342:(NSDate*)inValue { + NSDate *outValue = inValue; + if (outValue == 0) + outValue = [[NSDate alloc] init]; // no-warning + + if (outValue != inValue) + [outValue autorelease]; + + return outValue; +} +@end + +// <rdar://problem/8724287> - This test case previously crashed because +// of a bug in BugReporter. +extern const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key); +typedef struct __CFError * CFErrorRef; +extern const CFStringRef kCFErrorUnderlyingErrorKey; +extern CFDictionaryRef CFErrorCopyUserInfo(CFErrorRef err); +static void rdar_8724287(CFErrorRef error) +{ + CFErrorRef error_to_dump; + + error_to_dump = error; + while (error_to_dump != ((void*)0)) { + CFDictionaryRef info; + + info = CFErrorCopyUserInfo(error_to_dump); // expected-warning{{Potential leak of an object}} + + if (info != ((void*)0)) { + } + + error_to_dump = (CFErrorRef) CFDictionaryGetValue(info, kCFErrorUnderlyingErrorKey); + } +} + +// <rdar://problem/9234108> - Make sure the model applies cf_consumed +// correctly in argument positions besides the first. +extern void *CFStringCreate(void); +extern void rdar_9234108_helper(void *key, void * CF_CONSUMED value); +void rdar_9234108() { + rdar_9234108_helper(0, CFStringCreate()); +} + +// <rdar://problem/9726279> - Make sure that objc_method_family works +// to override naming conventions. +struct TwoDoubles { + double one; + double two; +}; +typedef struct TwoDoubles TwoDoubles; + +@interface NSValue (Mine) +- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles __attribute__((objc_method_family(init))); +@end + +@implementation NSValue (Mine) +- (id)_prefix_initWithTwoDoubles:(TwoDoubles)twoDoubles +{ + return [self init]; +} +@end + +void rdar9726279() { + TwoDoubles twoDoubles = { 0.0, 0.0 }; + NSValue *value = [[NSValue alloc] _prefix_initWithTwoDoubles:twoDoubles]; + [value release]; +} + +// <rdar://problem/9732321> +// Test camelcase support for CF conventions. While Core Foundation APIs +// don't use camel casing, other code is allowed to use it. +CFArrayRef camelcase_create_1() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + +CFArrayRef camelcase_createno() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} +} + +CFArrayRef camelcase_copy() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + +CFArrayRef camelcase_copying() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} +} + +CFArrayRef copyCamelCase() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + +CFArrayRef __copyCamelCase() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + +CFArrayRef __createCamelCase() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + +CFArrayRef camel_create() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + + +CFArrayRef camel_creat() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} +} + +CFArrayRef camel_copy() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + +CFArrayRef camel_copyMachine() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning +} + +CFArrayRef camel_copymachine() { + return CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning {{leak}} +} + +// rdar://problem/8024350 +@protocol F18P +- (id) clone; +@end +@interface F18 : NSObject<F18P> @end +@interface F18(Cat) +- (id) clone NS_RETURNS_RETAINED; +@end + +@implementation F18 +- (id) clone { + return [F18 alloc]; +} +@end + +// Radar 6582778. +void rdar6582778(void) { + CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); + CFTypeRef vals[] = { CFDateCreate(0, t) }; // expected-warning {{leak}} +} + +CFTypeRef global; + +void rdar6582778_2(void) { + CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); + global = CFDateCreate(0, t); // no-warning +} + +// <rdar://problem/10232019> - Test that objects passed to containers +// are marked "escaped". + +void rdar10232019() { + NSMutableArray *array = [NSMutableArray array]; + + NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; + [array addObject:string]; + [string release]; + + NSString *otherString = [string stringByAppendingString:@"bar"]; // no-warning + NSLog(@"%@", otherString); +} + +void rdar10232019_positive() { + NSMutableArray *array = [NSMutableArray array]; + + NSString *string = [[NSString alloc] initWithUTF8String:"foo"]; + [string release]; + + NSString *otherString = [string stringByAppendingString:@"bar"]; // expected-warning {{Reference-counted object is used after it is release}} + NSLog(@"%@", otherString); +} + +// RetainCountChecker support for XPC. +// <rdar://problem/9658496> +typedef void * xpc_object_t; +xpc_object_t _CFXPCCreateXPCObjectFromCFObject(CFTypeRef cf); +void xpc_release(xpc_object_t object); + +void rdar9658496() { + CFStringRef cf; + xpc_object_t xpc; + cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning + xpc = _CFXPCCreateXPCObjectFromCFObject( cf ); + CFRelease(cf); + xpc_release(xpc); +} + +// Support annotations with method families. +@interface RDar10824732 : NSObject +- (id)initWithObj:(id CF_CONSUMED)obj; +@end + +@implementation RDar10824732 +- (id)initWithObj:(id)obj { + [obj release]; + return [super init]; +} +@end + +void rdar_10824732() { + @autoreleasepool { + NSString *obj = @"test"; + RDar10824732 *foo = [[RDar10824732 alloc] initWithObj:obj]; // no-warning + [foo release]; + } +} + +//===----------------------------------------------------------------------===// +// Test returning allocated memory in a struct. +// +// We currently don't have a general way to track pointers that "escape". +// Here we test that RetainCountChecker doesn't get excited about returning +// allocated CF objects in struct fields. +//===----------------------------------------------------------------------===// +void *malloc(size_t); +struct rdar11104566 { CFStringRef myStr; }; +struct rdar11104566 test_rdar11104566() { + CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning + struct rdar11104566 V; + V.myStr = cf; + return V; // no-warning +} + +struct rdar11104566 *test_2_rdar11104566() { + CFStringRef cf = CFStringCreateWithCString( ((CFAllocatorRef)0), "test", kCFStringEncodingUTF8 ); // no-warning + struct rdar11104566 *V = (struct rdar11104566 *) malloc(sizeof(*V)); + V->myStr = cf; + return V; // no-warning +} + +//===----------------------------------------------------------------------===// +// ObjC literals support. +//===----------------------------------------------------------------------===// + +void test_objc_arrays() { + { // CASE ONE -- OBJECT IN ARRAY CREATED DIRECTLY + NSObject *o = [[NSObject alloc] init]; + NSArray *a = [[NSArray alloc] initWithObjects:o, (void*)0]; // expected-warning {{leak}} + [o release]; + [a description]; + [o description]; + } + + { // CASE TWO -- OBJECT IN ARRAY CREATED BY DUPING AUTORELEASED ARRAY + NSObject *o = [[NSObject alloc] init]; + NSArray *a1 = [NSArray arrayWithObjects:o, (void*)0]; + NSArray *a2 = [[NSArray alloc] initWithArray:a1]; // expected-warning {{leak}} + [o release]; + [a2 description]; + [o description]; + } + + { // CASE THREE -- OBJECT IN RETAINED @[] + NSObject *o = [[NSObject alloc] init]; + NSArray *a3 = [@[o] retain]; // expected-warning {{leak}} + [o release]; + [a3 description]; + [o description]; + } + + { // CASE FOUR -- OBJECT IN ARRAY CREATED BY DUPING @[] + NSObject *o = [[NSObject alloc] init]; + NSArray *a = [[NSArray alloc] initWithArray:@[o]]; // expected-warning {{leak}} + [o release]; + + [a description]; + [o description]; + } + + { // CASE FIVE -- OBJECT IN RETAINED @{} + NSValue *o = [[NSValue alloc] init]; + NSDictionary *a = [@{o : o} retain]; // expected-warning {{leak}} + [o release]; + + [a description]; + [o description]; + } +} + |