retain-release-region-store.m [plain text]
// RUN:
//===----------------------------------------------------------------------===//
// 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 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);
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;
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 signed char BOOL;
typedef struct _NSZone NSZone;
@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
@protocol NSObject
- (BOOL)isEqual:(id)object;
- (id)retain;
- (oneway void)release;
@end @protocol NSCopying - (id)copyWithZone:(NSZone *)zone;
@end @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder;
@end
@interface NSObject <NSObject> {}
- (id)init;
+ (id)allocWithZone:(NSZone *)zone;
+ (id)alloc;
- (void)dealloc;
@end
typedef float CGFloat;
typedef double NSTimeInterval;
@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate;
@end enum {
NSObjCNoType = 0, NSObjCVoidType = 'v', NSObjCCharType = 'c', NSObjCShortType = 's', NSObjCLongType = 'l', NSObjCLonglongType = 'q', NSObjCFloatType = 'f', NSObjCDoubleType = 'd', NSObjCBoolType = 'B', NSObjCSelectorType = ':', NSObjCObjectType = '@', NSObjCStructType = '{', NSObjCPointerType = '^', NSObjCStringType = '*', NSObjCArrayType = '[', NSObjCUnionType = '(', NSObjCBitfield = 'b' }
__attribute__((deprecated));
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 NSAppleEventManager : NSObject {
}
@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 NSNumber : NSObject
- (id)initWithInt:(int)value;
@end
typedef unsigned long NSUInteger;
@interface NSArray : NSObject
-(id) initWithObjects:(const id *)objects count:(NSUInteger) cnt;
@end
//===----------------------------------------------------------------------===//
// Test cases.
//===----------------------------------------------------------------------===//
// Test to see if we *issue* an error when we store the pointer
// to a struct. This differs from basic store.
CFAbsoluteTime CFAbsoluteTimeGetCurrent(void);
struct foo {
NSDate* f;
};
// FIXME: We should be warning about a use-after-free here, but we
// temporarily "escape" retain counted objects stored to structs very eagerly
// until we can properly tell whether they have escaped via a return value
// or not.
CFAbsoluteTime f4() {
struct foo x;
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t);
[((NSDate*) date) retain];
CFRelease(date);
CFDateGetAbsoluteTime(date); // no-warning
x.f = (NSDate*) date;
[((NSDate*) date) release];
// FIXME: the following line should warn.
t = CFDateGetAbsoluteTime(date); // no-warning
return t;
}
// Test that assigning to an self.ivar loses track of an object.
// This is a temporary hack to reduce false positives.
@interface Test3 : NSObject {
id myObj;
}
- (void)test_self_assign_ivar;
@end
@implementation Test3
- (void)test_self_assign_ivar {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t); // no-warning
myObj = (id) date;
}
@end
//===------------------------------------------------------------------------------------------===//
// <rdar://problem/7257223> (also <rdar://problem/7283470>) - False positive due to not invalidating
// the reference count of a tracked region that was itself invalidated.
//===------------------------------------------------------------------------------------------===//
typedef struct __rdar_7257223 { CFDateRef x; } RDar7257223;
void rdar_7257223_aux(RDar7257223 *p);
CFDateRef rdar7257223_Create(void) {
RDar7257223 s;
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
s.x = CFDateCreate(0, t); // no-warning
rdar_7257223_aux(&s);
return s.x;
}
CFDateRef rdar7257223_Create_2(void) {
RDar7257223 s;
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
s.x = CFDateCreate(0, t); // no-warning
return s.x;
}
void rdar7283470(void) {
NSNumber *numbers[] = {
[[NSNumber alloc] initWithInt:1], // no-warning
[[NSNumber alloc] initWithInt:2], // no-warning
[[NSNumber alloc] initWithInt:3], // no-warning
[[NSNumber alloc] initWithInt:4], // no-warning
[[NSNumber alloc] initWithInt:5] // no-warning
};
for (unsigned i = 0 ; i < sizeof(numbers) / sizeof(numbers[0]) ; ++i)
[numbers[i] release];
}
void rdar7283470_positive(void) {
NSNumber *numbers[] = {
[[NSNumber alloc] initWithInt:1], // expected-warning{{leak}}
[[NSNumber alloc] initWithInt:2], // expected-warning{{leak}}
[[NSNumber alloc] initWithInt:3], // expected-warning{{leak}}
[[NSNumber alloc] initWithInt:4], // expected-warning{{leak}}
[[NSNumber alloc] initWithInt:5] // expected-warning{{leak}}
};
}
void rdar7283470_2(void) {
NSNumber *numbers[] = {
[[NSNumber alloc] initWithInt:1], // no-warning
[[NSNumber alloc] initWithInt:2], // no-warning
[[NSNumber alloc] initWithInt:3], // no-warning
[[NSNumber alloc] initWithInt:4], // no-warning
[[NSNumber alloc] initWithInt:5] // no-warning
};
NSArray *s_numbers =[[NSArray alloc] initWithObjects:&numbers[0] count:sizeof(numbers) / sizeof(numbers[0])];
for (unsigned i = 0 ; i < sizeof(numbers) / sizeof(numbers[0]) ; ++i)
[numbers[i] release];
[s_numbers release];
}
void rdar7283470_2_positive(void) {
NSNumber *numbers[] = {
[[NSNumber alloc] initWithInt:1], // no-warning
[[NSNumber alloc] initWithInt:2], // no-warning
[[NSNumber alloc] initWithInt:3], // no-warning
[[NSNumber alloc] initWithInt:4], // no-warning
[[NSNumber alloc] initWithInt:5] // no-warning
};
NSArray *s_numbers =[[NSArray alloc] initWithObjects: &numbers[0] count:sizeof(numbers) / sizeof(numbers[0])]; // expected-warning{{leak}}
for (unsigned i = 0 ; i < sizeof(numbers) / sizeof(numbers[0]) ; ++i)
[numbers[i] release];
}
void pr6699(int x) {
CFDateRef values[2];
values[0] = values[1] = 0;
if (x) {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
values[1] = CFDateCreate(0, t);
}
if (values[1]) {
// A bug in RegionStore::RemoveDeadBindings caused 'values[1]' to get prematurely
// pruned from the store.
CFRelease(values[1]); // no-warning
}
}
// <rdar://problem/8261992> Idempotent operation checker false positive with ObjC ivars
@interface R8261992 : NSObject {
@package int myIvar;
}
@end
static void R8261992_ChangeMyIvar(R8261992 *tc) {
tc->myIvar = 5;
}
void R8261992_test(R8261992 *tc) {
int temp = tc->myIvar;
// The ivar binding for tc->myIvar gets invalidated.
R8261992_ChangeMyIvar(tc);
tc->myIvar = temp; // no-warning
tc = [[R8261992 alloc] init];
temp = tc->myIvar; // no-warning
// The ivar binding for tc->myIvar gets invalidated.
R8261992_ChangeMyIvar(tc);
tc->myIvar = temp;
[tc release]; // no-warning
// did we analyze this?
int *p = 0x0;
*p = 0xDEADBEEF; // expected-warning{{null}}
}