| // RUN: clang-cc -analyze -checker-cfref -verify %s && |
| // RUN: clang-cc -analyze -checker-cfref -analyzer-store=region -verify %s |
| |
| |
| //===----------------------------------------------------------------------===// |
| // The following code is reduced using delta-debugging from |
| // Foundation.h (Mac OS X). |
| // |
| // It includes the basic definitions for the test cases below. |
| // Not including Foundation.h directly makes this test case both svelte and |
| // portable to non-Mac platforms. |
| //===----------------------------------------------------------------------===// |
| |
| typedef unsigned int __darwin_natural_t; |
| typedef struct {} div_t; |
| typedef unsigned long UInt32; |
| typedef signed long CFIndex; |
| 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 const struct __CFDictionary * CFDictionaryRef; |
| 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 struct { |
| } |
| CFRunLoopObserverContext; |
| typedef signed char BOOL; |
| typedef unsigned int 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; |
| @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)alloc; |
| + (id)allocWithZone:(NSZone *)zone; |
| @end typedef float CGFloat; |
| @interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length; |
| - (const char *)UTF8String; |
| - (id)initWithUTF8String:(const char *)nullTerminatedCString; |
| + (id)stringWithUTF8String:(const char *)nullTerminatedCString; |
| - (id)init; |
| - (void)dealloc; |
| @end extern NSString * const NSCurrentLocaleDidChangeNotification ; |
| @protocol NSLocking - (void)lock; |
| @end extern NSString * const NSUndoManagerCheckpointNotification; |
| typedef enum { |
| ACL_READ_DATA = (1<<1), ACL_LIST_DIRECTORY = (1<<1), ACL_WRITE_DATA = (1<<2), ACL_ADD_FILE = (1<<2), ACL_EXECUTE = (1<<3), ACL_SEARCH = (1<<3), ACL_DELETE = (1<<4), ACL_APPEND_DATA = (1<<5), ACL_ADD_SUBDIRECTORY = (1<<5), ACL_DELETE_CHILD = (1<<6), ACL_READ_ATTRIBUTES = (1<<7), ACL_WRITE_ATTRIBUTES = (1<<8), ACL_READ_EXTATTRIBUTES = (1<<9), ACL_WRITE_EXTATTRIBUTES = (1<<10), ACL_READ_SECURITY = (1<<11), ACL_WRITE_SECURITY = (1<<12), ACL_CHANGE_OWNER = (1<<13) } |
| acl_entry_id_t; |
| typedef int kern_return_t; |
| typedef kern_return_t mach_error_t; |
| typedef mach_port_t io_object_t; |
| typedef io_object_t io_service_t; |
| 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 NSResponder : NSObject <NSCoding> { |
| } |
| @end @class NSColor, NSFont, NSNotification; |
| typedef struct __CFlags { |
| } |
| _CFlags; |
| @interface NSCell : NSObject <NSCopying, NSCoding> { |
| } |
| @end @class NSDate, NSDictionary, NSError, NSException, NSNotification; |
| @interface NSManagedObjectContext : NSObject <NSCoding, NSLocking> { |
| } |
| @end enum { |
| kDAReturnSuccess = 0, kDAReturnError = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x01, kDAReturnBusy = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x02, kDAReturnBadArgument = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x03, kDAReturnExclusiveAccess = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x04, kDAReturnNoResources = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x05, kDAReturnNotFound = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x06, kDAReturnNotMounted = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x07, kDAReturnNotPermitted = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x08, kDAReturnNotPrivileged = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x09, kDAReturnNotReady = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0A, kDAReturnNotWritable = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0B, kDAReturnUnsupported = (((0x3e)&0x3f)<<26) | (((0x368)&0xfff)<<14) | 0x0C }; |
| typedef mach_error_t DAReturn; |
| typedef const struct __DADissenter * DADissenterRef; |
| extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string ); |
| |
| |
| |
| |
| //===----------------------------------------------------------------------===// |
| // 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()); |
| 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; |
| } |
| |
| CFDateRef f9() { |
| CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); |
| 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); |
| [(id) A autorelease]; // no-warning |
| } |
| |
| // 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 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 |
| |
| // <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]; |
| } |
| |
| // 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]; |
| } |
| } |
| |