1 // RUN: %clang_cc1 -triple i386-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=region -analyzer-constraints=basic -verify %s
2 // RUN: %clang_cc1 -triple i386-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=region -analyzer-constraints=range -verify %s
3 // RUN: %clang_cc1 -DTEST_64 -triple x86_64-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=region -analyzer-constraints=basic -verify %s
4 // RUN: %clang_cc1 -DTEST_64 -triple x86_64-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=region -analyzer-constraints=range -verify %s
6 // ==-- FIXME: -analyzer-store=basic fails on this file (false negatives). --==
7 // NOTWORK: %clang_cc1 -triple i386-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=basic -analyzer-constraints=range -verify %s &&
8 // NOTWORK: %clang_cc1 -triple i386-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=basic -analyzer-constraints=basic -verify %s &&
9 // NOTWORK: %clang_cc1 -DTEST_64 -triple x86_64-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=basic -analyzer-constraints=basic -verify %s &&
10 // NOTWORK: %clang_cc1 -DTEST_64 -triple x86_64-apple-darwin10 -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=basic -analyzer-constraints=range -verify %s
12 //===----------------------------------------------------------------------===//
13 // The following code is reduced using delta-debugging from
14 // Foundation.h (Mac OS X).
16 // It includes the basic definitions for the test cases below.
17 // Not directly including Foundation.h directly makes this test case
18 // both svelte and portable to non-Mac platforms.
19 //===----------------------------------------------------------------------===//
22 typedef long long int64_t;
23 _Bool OSAtomicCompareAndSwap64Barrier( int64_t __oldValue, int64_t __newValue, volatile int64_t *__theValue );
24 #define COMPARE_SWAP_BARRIER OSAtomicCompareAndSwap64Barrier
25 typedef int64_t intptr_t;
28 _Bool OSAtomicCompareAndSwap32Barrier( int32_t __oldValue, int32_t __newValue, volatile int32_t *__theValue );
29 #define COMPARE_SWAP_BARRIER OSAtomicCompareAndSwap32Barrier
30 typedef int32_t intptr_t;
33 typedef const void * CFTypeRef;
34 typedef const struct __CFString * CFStringRef;
35 typedef const struct __CFAllocator * CFAllocatorRef;
36 extern const CFAllocatorRef kCFAllocatorDefault;
37 extern CFTypeRef CFRetain(CFTypeRef cf);
38 void CFRelease(CFTypeRef cf);
39 typedef const struct __CFDictionary * CFDictionaryRef;
40 const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key);
41 extern CFStringRef CFStringCreateWithFormat(CFAllocatorRef alloc, CFDictionaryRef formatOptions, CFStringRef format, ...);
42 typedef signed char BOOL;
43 typedef int NSInteger;
44 typedef unsigned int NSUInteger;
45 @class NSString, Protocol;
46 extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
47 typedef NSInteger NSComparisonResult;
48 typedef struct _NSZone NSZone;
49 @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
51 - (BOOL)isEqual:(id)object;
52 - (oneway void)release;
57 - (id)copyWithZone:(NSZone *)zone;
59 @protocol NSMutableCopying
60 - (id)mutableCopyWithZone:(NSZone *)zone;
63 - (void)encodeWithCoder:(NSCoder *)aCoder;
65 @interface NSObject <NSObject> {}
69 extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
70 typedef struct {} NSFastEnumerationState;
71 @protocol NSFastEnumeration
72 - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
75 typedef struct _NSRange {} NSRange;
76 @interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>
79 @interface NSMutableArray : NSArray
80 - (void)addObject:(id)anObject;
81 - (id)initWithCapacity:(NSUInteger)numItems;
83 typedef unsigned short unichar;
84 @class NSData, NSArray, NSDictionary, NSCharacterSet, NSData, NSURL, NSError, NSLocale;
85 typedef NSUInteger NSStringCompareOptions;
86 @interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length;
87 - (NSComparisonResult)compare:(NSString *)string;
88 - (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask;
89 - (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask range:(NSRange)compareRange;
90 - (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask range:(NSRange)compareRange locale:(id)locale;
91 - (NSComparisonResult)caseInsensitiveCompare:(NSString *)string;
92 - (NSArray *)componentsSeparatedByCharactersInSet:(NSCharacterSet *)separator;
93 + (id)stringWithFormat:(NSString *)format, ... __attribute__((format(__NSString__, 1, 2)));
95 @interface NSSimpleCString : NSString {} @end
96 @interface NSConstantString : NSSimpleCString @end
97 extern void *_NSConstantStringClassReference;
99 //===----------------------------------------------------------------------===//
101 //===----------------------------------------------------------------------===//
103 NSComparisonResult f1(NSString* s) {
104 NSString *aString = 0;
105 return [s compare:aString]; // expected-warning {{Argument to 'NSString' method 'compare:' cannot be nil.}}
108 NSComparisonResult f2(NSString* s) {
109 NSString *aString = 0;
110 return [s caseInsensitiveCompare:aString]; // expected-warning {{Argument to 'NSString' method 'caseInsensitiveCompare:' cannot be nil.}}
113 NSComparisonResult f3(NSString* s, NSStringCompareOptions op) {
114 NSString *aString = 0;
115 return [s compare:aString options:op]; // expected-warning {{Argument to 'NSString' method 'compare:options:' cannot be nil.}}
118 NSComparisonResult f4(NSString* s, NSStringCompareOptions op, NSRange R) {
119 NSString *aString = 0;
120 return [s compare:aString options:op range:R]; // expected-warning {{Argument to 'NSString' method 'compare:options:range:' cannot be nil.}}
123 NSComparisonResult f5(NSString* s, NSStringCompareOptions op, NSRange R) {
124 NSString *aString = 0;
125 return [s compare:aString options:op range:R locale:0]; // expected-warning {{Argument to 'NSString' method 'compare:options:range:locale:' cannot be nil.}}
128 NSArray *f6(NSString* s) {
129 return [s componentsSeparatedByCharactersInSet:0]; // expected-warning {{Argument to 'NSString' method 'componentsSeparatedByCharactersInSet:' cannot be nil.}}
132 NSString* f7(NSString* s1, NSString* s2, NSString* s3) {
134 NSString* s4 = (NSString*)
135 CFStringCreateWithFormat(kCFAllocatorDefault, 0, // expected-warning{{leak}}
136 (CFStringRef) __builtin___CFStringMakeConstantString("%@ %@ (%@)"),
143 NSMutableArray* f8() {
145 NSString* s = [[NSString alloc] init];
146 NSMutableArray* a = [[NSMutableArray alloc] initWithCapacity:2];
148 [s release]; // no-warning
154 NSString* s = [[NSString alloc] init];
157 [q release]; // expected-warning {{used after it is released}}
161 static NSString* s = 0;
162 if (!s) s = [[NSString alloc] init];
163 return s; // no-warning
166 // Test case for regression reported in <rdar://problem/6452745>.
167 // Essentially 's' should not be considered allocated on the false branch.
168 // This exercises the 'EvalAssume' logic in GRTransferFuncs (CFRefCount.cpp).
169 NSString* f11(CFDictionaryRef dict, const char* key) {
170 NSString* s = (NSString*) CFDictionaryGetValue(dict, key);
178 // Test case for passing a tracked object by-reference to a function we
180 void unknown_function_f12(NSString** s);
182 NSString *string = [[NSString alloc] init];
183 unknown_function_f12(&string); // no-warning
186 // Test double release of CFString (PR 4014).
188 CFStringRef ref = CFStringCreateWithFormat(kCFAllocatorDefault, ((void*)0), ((CFStringRef) __builtin___CFStringMakeConstantString ("" "%d" "")), 100);
190 CFRelease(ref); // expected-warning{{Reference-counted object is used after it is released}}
193 // Test regular use of -autorelease
194 @interface TestAutorelease
195 -(NSString*) getString;
197 @implementation TestAutorelease
198 -(NSString*) getString {
199 NSString *str = [[NSString alloc] init];
200 return [str autorelease]; // no-warning
204 NSString *s = [[NSString alloc] init]; // expected-warning{{leak}}
210 NSString *s = [[[NSString alloc] init] autorelease]; // expected-warning{{leak}}
215 NSString *s = [[[NSString alloc] init] autorelease];
221 NSString *s = [[NSString alloc] init]; // expected-warning{{leak}}
226 NSString *s = [[NSString alloc] init];
231 @interface C1 : NSObject {}
232 - (NSString*) getShared;
233 + (C1*) sharedInstance;
235 @implementation C1 : NSObject {}
236 - (NSString*) getShared {
237 static NSString* s = 0;
238 if (!s) s = [[NSString alloc] init];
239 return s; // no-warning
241 + (C1 *)sharedInstance {
242 static C1 *sharedInstance = 0;
243 if (!sharedInstance) {
244 sharedInstance = [[C1 alloc] init];
246 return sharedInstance; // no-warning
250 @interface SharedClass : NSObject
251 + (id)sharedInstance;
255 @implementation SharedClass
258 if ((self = [super init])) {
265 return [[SharedClass alloc] _init]; // expected-warning{{leak}}
268 + (id)sharedInstance {
269 static SharedClass *_sharedInstance = 0;
270 if (!_sharedInstance) {
271 _sharedInstance = [[SharedClass alloc] _init];
273 return _sharedInstance; // no-warning
277 id testSharedClassFromFunction() {
278 return [[SharedClass alloc] _init]; // no-warning
281 // Test OSCompareAndSwap
282 _Bool OSAtomicCompareAndSwapPtr( void *__oldValue, void *__newValue, void * volatile *__theValue );
283 extern BOOL objc_atomicCompareAndSwapPtr(id predicate, id replacement, volatile id *objectLocation);
285 void testOSCompareAndSwap() {
287 NSString *s = [[NSString alloc] init]; // no-warning
288 if (!OSAtomicCompareAndSwapPtr(0, s, (void**) &old))
294 void testOSCompareAndSwapXXBarrier_local() {
296 NSString *s = [[NSString alloc] init]; // no-warning
297 if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) &old))
303 void testOSCompareAndSwapXXBarrier_local_no_direct_release() {
305 NSString *s = [[NSString alloc] init]; // no-warning
306 if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) &old))
312 int testOSCompareAndSwapXXBarrier_id(Class myclass, id xclass) {
313 if (COMPARE_SWAP_BARRIER(0, (intptr_t) myclass, (intptr_t*) &xclass))
318 void test_objc_atomicCompareAndSwap_local() {
320 NSString *s = [[NSString alloc] init]; // no-warning
321 if (!objc_atomicCompareAndSwapPtr(0, s, &old))
327 void test_objc_atomicCompareAndSwap_local_no_direct_release() {
329 NSString *s = [[NSString alloc] init]; // no-warning
330 if (!objc_atomicCompareAndSwapPtr(0, s, &old))
336 void test_objc_atomicCompareAndSwap_parameter(NSString **old) {
337 NSString *s = [[NSString alloc] init]; // no-warning
338 if (!objc_atomicCompareAndSwapPtr(0, s, old))
344 void test_objc_atomicCompareAndSwap_parameter_no_direct_release(NSString **old) {
345 NSString *s = [[NSString alloc] init]; // expected-warning{{leak}}
346 if (!objc_atomicCompareAndSwapPtr(0, s, old))
353 // Test stringWithFormat (<rdar://problem/6815234>)
354 void test_stringWithFormat() {
355 NSString *string = [[NSString stringWithFormat:@"%ld", (long) 100] retain];
357 [string release]; // expected-warning{{Incorrect decrement of the reference count}}
360 // Test isTrackedObjectType().
361 typedef NSString* WonkyTypedef;
362 @interface TestIsTracked
363 + (WonkyTypedef)newString;
366 void test_isTrackedObjectType(void) {
367 NSString *str = [TestIsTracked newString]; // expected-warning{{Potential leak}}
370 // Test isTrackedCFObjectType().
371 @interface TestIsCFTracked
372 + (CFStringRef) badNewCFString;
373 + (CFStringRef) newCFString;
376 @implementation TestIsCFTracked
377 + (CFStringRef) newCFString {
378 return CFStringCreateWithFormat(kCFAllocatorDefault, ((void*)0), ((CFStringRef) __builtin___CFStringMakeConstantString ("" "%d" "")), 100); // no-warning
380 + (CFStringRef) badNewCFString {
381 return CFStringCreateWithFormat(kCFAllocatorDefault, ((void*)0), ((CFStringRef) __builtin___CFStringMakeConstantString ("" "%d" "")), 100); // expected-warning{{leak}}
384 // Test @synchronized
385 void test_synchronized(id x) {
387 NSString *string = [[NSString stringWithFormat:@"%ld", (long) 100] retain]; // expected-warning {{leak}}
392 void testOSCompareAndSwapXXBarrier_parameter(NSString **old) {
393 NSString *s = [[NSString alloc] init]; // no-warning
394 if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) old))
400 void testOSCompareAndSwapXXBarrier_parameter_no_direct_release(NSString **old) {
401 NSString *s = [[NSString alloc] init]; // no-warning
402 if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) old))