327 lines
13 KiB
Objective-C
327 lines
13 KiB
Objective-C
// RUN: clang -analyze -checker-cfref -verify %s &&
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// RUN: clang -analyze -checker-cfref -analyzer-store=region -verify %s
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//===----------------------------------------------------------------------===//
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// The following code is reduced using delta-debugging from
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// Foundation.h (Mac OS X).
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//
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// It includes the basic definitions for the test cases below.
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// Not including Foundation.h directly makes this test case both svelte and
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// portable to non-Mac platforms.
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//===----------------------------------------------------------------------===//
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typedef unsigned int __darwin_natural_t;
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typedef struct {} div_t;
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typedef unsigned long UInt32;
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typedef signed long CFIndex;
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typedef const void * CFTypeRef;
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typedef const struct __CFString * CFStringRef;
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typedef const struct __CFAllocator * CFAllocatorRef;
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extern const CFAllocatorRef kCFAllocatorDefault;
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extern CFTypeRef CFRetain(CFTypeRef cf);
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extern void CFRelease(CFTypeRef cf);
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typedef struct {
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}
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CFArrayCallBacks;
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extern const CFArrayCallBacks kCFTypeArrayCallBacks;
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typedef const struct __CFArray * CFArrayRef;
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typedef struct __CFArray * CFMutableArrayRef;
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extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
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extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
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extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
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typedef const struct __CFDictionary * CFDictionaryRef;
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typedef UInt32 CFStringEncoding;
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enum {
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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 };
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extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
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typedef double CFTimeInterval;
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typedef CFTimeInterval CFAbsoluteTime;
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extern CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
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typedef const struct __CFDate * CFDateRef;
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extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
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extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
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typedef __darwin_natural_t natural_t;
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typedef natural_t mach_port_name_t;
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typedef mach_port_name_t mach_port_t;
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typedef struct {
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}
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CFRunLoopObserverContext;
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typedef signed char BOOL;
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typedef unsigned int NSUInteger;
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@class NSString, Protocol;
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extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
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typedef struct _NSZone NSZone;
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@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
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@protocol NSObject - (BOOL)isEqual:(id)object;
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- (id)retain;
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- (oneway void)release;
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- (id)autorelease;
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@end @protocol NSCopying - (id)copyWithZone:(NSZone *)zone;
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@end @protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone;
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@end @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder;
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@end @interface NSObject <NSObject> {
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}
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+ (id)alloc;
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@end typedef float CGFloat;
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@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length;
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- (const char *)UTF8String;
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- (id)initWithUTF8String:(const char *)nullTerminatedCString;
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+ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
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@end extern NSString * const NSCurrentLocaleDidChangeNotification ;
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@protocol NSLocking - (void)lock;
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@end extern NSString * const NSUndoManagerCheckpointNotification;
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typedef enum {
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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) }
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acl_entry_id_t;
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typedef int kern_return_t;
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typedef kern_return_t mach_error_t;
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typedef mach_port_t io_object_t;
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typedef io_object_t io_service_t;
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typedef struct __DASession * DASessionRef;
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extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
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typedef struct __DADisk * DADiskRef;
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extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
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extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
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extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
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extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
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@interface NSResponder : NSObject <NSCoding> {
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}
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@end @class NSColor, NSFont, NSNotification;
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typedef struct __CFlags {
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}
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_CFlags;
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@interface NSCell : NSObject <NSCopying, NSCoding> {
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}
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@end @class NSDate, NSDictionary, NSError, NSException, NSNotification;
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@interface NSManagedObjectContext : NSObject <NSCoding, NSLocking> {
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}
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@end enum {
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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 };
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typedef mach_error_t DAReturn;
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typedef const struct __DADissenter * DADissenterRef;
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extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
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//===----------------------------------------------------------------------===//
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// Test cases.
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//===----------------------------------------------------------------------===//
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CFAbsoluteTime f1() {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t);
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CFRetain(date);
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CFRelease(date);
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CFDateGetAbsoluteTime(date); // no-warning
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CFRelease(date);
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t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
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return t;
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}
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CFAbsoluteTime f2() {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t);
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[((NSDate*) date) retain];
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CFRelease(date);
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CFDateGetAbsoluteTime(date); // no-warning
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[((NSDate*) date) release];
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t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
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return t;
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}
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NSDate* global_x;
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// Test to see if we supresss an error when we store the pointer
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// to a global.
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CFAbsoluteTime f3() {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t);
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[((NSDate*) date) retain];
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CFRelease(date);
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CFDateGetAbsoluteTime(date); // no-warning
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global_x = (NSDate*) date;
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[((NSDate*) date) release];
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t = CFDateGetAbsoluteTime(date); // no-warning
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return t;
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}
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//---------------------------------------------------------------------------
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// Test case 'f4' differs for region store and basic store. See
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// retain-release-region-store.m and retain-release-basic-store.m.
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//---------------------------------------------------------------------------
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// Test a leak.
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CFAbsoluteTime f5(int x) {
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CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
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CFDateRef date = CFDateCreate(0, t); // expected-warning{{leak}}
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if (x)
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CFRelease(date);
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return t;
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}
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// Test a leak involving the return.
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CFDateRef f6(int x) {
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CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); // expected-warning{{leak}}
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CFRetain(date);
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return date;
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}
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// Test a leak involving an overwrite.
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CFDateRef f7() {
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CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent()); //expected-warning{{leak}}
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CFRetain(date);
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date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
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return date;
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}
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// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and
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// has the word create.
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CFDateRef MyDateCreate();
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CFDateRef f8() {
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CFDateRef date = MyDateCreate(); // expected-warning{{leak}}
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CFRetain(date);
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return date;
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}
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CFDateRef f9() {
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CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
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int *p = 0;
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// When allocations fail, CFDateCreate can return null.
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if (!date) *p = 1; // expected-warning{{null}}
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return date;
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}
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// Handle DiskArbitration API:
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//
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// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
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//
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void f10(io_service_t media, DADiskRef d, CFStringRef s) {
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DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello"); // expected-warning{{leak}}
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if (disk) NSLog(@"ok");
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disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media); // expected-warning{{leak}}
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if (disk) NSLog(@"ok");
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CFDictionaryRef dict = DADiskCopyDescription(d); // expected-warning{{leak}}
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if (dict) NSLog(@"ok");
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disk = DADiskCopyWholeDisk(d); // expected-warning{{leak}}
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if (disk) NSLog(@"ok");
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DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault, // expected-warning{{leak}}
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kDAReturnSuccess, s);
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if (dissenter) NSLog(@"ok");
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DASessionRef session = DASessionCreate(kCFAllocatorDefault); // expected-warning{{leak}}
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if (session) NSLog(@"ok");
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}
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// Test retain/release checker with CFString and CFMutableArray.
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void f11() {
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// Create the array.
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CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
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// Create a string.
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CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
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kCFStringEncodingUTF8);
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// Add the string to the array.
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CFArrayAppendValue(A, s1);
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// Decrement the reference count.
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CFRelease(s1); // no-warning
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// Get the string. We don't own it.
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s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
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// Release the array.
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CFRelease(A); // no-warning
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// Release the string. This is a bug.
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CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
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}
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// PR 3337: Handle functions declared using typedefs.
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typedef CFTypeRef CREATEFUN();
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CREATEFUN MyCreateFun;
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void f12() {
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CFTypeRef o = MyCreateFun(); // expected-warning {{leak}}
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}
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void f13_autorelease() {
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CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
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[(id) A autorelease]; // no-warning
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}
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// This case exercises the logic where the leak site is the same as the allocation site.
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void f14_leakimmediately() {
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CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{leak}}
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}
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// Test basic tracking of ivars associated with 'self'. For the retain/release
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// checker we currently do not want to flag leaks associated with stores
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// of tracked objects to ivars.
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@interface SelfIvarTest : NSObject {
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id myObj;
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}
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- (void)test_self_tracking;
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@end
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@implementation SelfIvarTest
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- (void)test_self_tracking {
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myObj = (id) CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // no-warning
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}
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@end
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// <rdar://problem/6659160>
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int isFoo(char c);
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static void rdar_6659160(char *inkind, char *inname)
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{
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// We currently expect that [NSObject alloc] cannot fail. This
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// will be a toggled flag in the future. It can indeed return null, but
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// Cocoa programmers generally aren't expected to reason about out-of-memory
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// conditions.
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NSString *kind = [[NSString alloc] initWithUTF8String:inkind]; // expected-warning{{leak}}
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// We do allow stringWithUTF8String to fail. This isn't really correct, as
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// far as returning nil. In most error conditions it will throw an exception.
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// If allocation fails it could return nil, but again this
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// isn't expected.
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NSString *name = [NSString stringWithUTF8String:inname];
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if(!name)
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return;
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const char *kindC = 0;
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const char *nameC = 0;
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// In both cases, we cannot reach a point down below where we
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// dereference kindC or nameC with either being null. This is because
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// we assume that [NSObject alloc] doesn't fail and that we have the guard
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// up above.
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if(kind)
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kindC = [kind UTF8String];
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if(name)
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nameC = [name UTF8String];
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if(!isFoo(kindC[0])) // expected-warning{{null}}
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return;
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if(!isFoo(nameC[0])) // no-warning
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return;
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[kind release];
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[name release];
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}
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