1 | // RUN: %clang_analyze_cc1 -triple %itanium_abi_triple -analyzer-checker=core,osx.cocoa.RetainCount -analyzer-store=region -analyzer-max-loop 6 -verify %s |
2 | |
3 | //===----------------------------------------------------------------------===// |
4 | // The following code is reduced using delta-debugging from |
5 | // Foundation.h (Mac OS X). |
6 | // |
7 | // It includes the basic definitions for the test cases below. |
8 | // Not including Foundation.h directly makes this test case both svelte and |
9 | // portable to non-Mac platforms. |
10 | //===----------------------------------------------------------------------===// |
11 | |
12 | typedef unsigned int __darwin_natural_t; |
13 | typedef unsigned long UInt32; |
14 | typedef signed long CFIndex; |
15 | typedef const void * CFTypeRef; |
16 | typedef const struct __CFString * CFStringRef; |
17 | typedef const struct __CFAllocator * CFAllocatorRef; |
18 | extern const CFAllocatorRef kCFAllocatorDefault; |
19 | extern CFTypeRef CFRetain(CFTypeRef cf); |
20 | extern void CFRelease(CFTypeRef cf); |
21 | typedef struct { |
22 | } |
23 | CFArrayCallBacks; |
24 | extern const CFArrayCallBacks kCFTypeArrayCallBacks; |
25 | typedef const struct __CFArray * CFArrayRef; |
26 | typedef struct __CFArray * CFMutableArrayRef; |
27 | extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks); |
28 | extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx); |
29 | typedef const struct __CFDictionary * CFDictionaryRef; |
30 | typedef UInt32 CFStringEncoding; |
31 | enum { |
32 | 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 }; |
33 | extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding); |
34 | typedef double CFTimeInterval; |
35 | typedef CFTimeInterval CFAbsoluteTime; |
36 | typedef const struct __CFDate * CFDateRef; |
37 | extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at); |
38 | extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate); |
39 | typedef __darwin_natural_t natural_t; |
40 | typedef natural_t mach_port_name_t; |
41 | typedef mach_port_name_t mach_port_t; |
42 | typedef signed char BOOL; |
43 | typedef struct _NSZone NSZone; |
44 | @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; |
45 | @protocol NSObject |
46 | - (BOOL)isEqual:(id)object; |
47 | - (id)retain; |
48 | - (oneway void)release; |
49 | @end @protocol NSCopying - (id)copyWithZone:(NSZone *)zone; |
50 | @end @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; |
51 | @end |
52 | @interface NSObject <NSObject> {} |
53 | - (id)init; |
54 | + (id)allocWithZone:(NSZone *)zone; |
55 | + (id)alloc; |
56 | - (void)dealloc; |
57 | @end |
58 | typedef float CGFloat; |
59 | typedef double NSTimeInterval; |
60 | @interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; |
61 | @end enum { |
62 | 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' } |
63 | __attribute__((deprecated)); |
64 | typedef int kern_return_t; |
65 | typedef kern_return_t mach_error_t; |
66 | typedef mach_port_t io_object_t; |
67 | typedef io_object_t io_service_t; |
68 | typedef struct __DASession * DASessionRef; |
69 | extern DASessionRef DASessionCreate( CFAllocatorRef allocator ); |
70 | typedef struct __DADisk * DADiskRef; |
71 | extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name ); |
72 | extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media ); |
73 | extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk ); |
74 | extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk ); |
75 | @interface NSAppleEventManager : NSObject { |
76 | } |
77 | @end enum { |
78 | 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 }; |
79 | typedef mach_error_t DAReturn; |
80 | typedef const struct __DADissenter * DADissenterRef; |
81 | extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string ); |
82 | @interface NSNumber : NSObject |
83 | - (id)initWithInt:(int)value; |
84 | @end |
85 | typedef unsigned long NSUInteger; |
86 | @interface NSArray : NSObject |
87 | -(id) initWithObjects:(const id *)objects count:(NSUInteger) cnt; |
88 | @end |
89 | |
90 | //===----------------------------------------------------------------------===// |
91 | // Test cases. |
92 | //===----------------------------------------------------------------------===// |
93 | |
94 | // Test to see if we *issue* an error when we store the pointer |
95 | // to a struct. This differs from basic store. |
96 | |
97 | CFAbsoluteTime CFAbsoluteTimeGetCurrent(void); |
98 | |
99 | struct foo { |
100 | NSDate* f; |
101 | }; |
102 | |
103 | // FIXME: We should be warning about a use-after-free here, but we |
104 | // temporarily "escape" retain counted objects stored to structs very eagerly |
105 | // until we can properly tell whether they have escaped via a return value |
106 | // or not. |
107 | CFAbsoluteTime f4() { |
108 | struct foo x; |
109 | |
110 | CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); |
111 | CFDateRef date = CFDateCreate(0, t); |
112 | [((NSDate*) date) retain]; |
113 | CFRelease(date); |
114 | CFDateGetAbsoluteTime(date); // no-warning |
115 | x.f = (NSDate*) date; |
116 | [((NSDate*) date) release]; |
117 | // FIXME: the following line should warn. |
118 | t = CFDateGetAbsoluteTime(date); // no-warning |
119 | return t; |
120 | } |
121 | |
122 | // Test that assigning to an self.ivar loses track of an object. |
123 | // This is a temporary hack to reduce false positives. |
124 | @interface Test3 : NSObject { |
125 | id myObj; |
126 | } |
127 | - (void)test_self_assign_ivar; |
128 | @end |
129 | |
130 | @implementation Test3 |
131 | - (void)test_self_assign_ivar { |
132 | CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); |
133 | CFDateRef date = CFDateCreate(0, t); // no-warning |
134 | myObj = (id) date; |
135 | } |
136 | @end |
137 | |
138 | //===------------------------------------------------------------------------------------------===// |
139 | // <rdar://problem/7257223> (also <rdar://problem/7283470>) - False positive due to not invalidating |
140 | // the reference count of a tracked region that was itself invalidated. |
141 | //===------------------------------------------------------------------------------------------===// |
142 | |
143 | typedef struct __rdar_7257223 { CFDateRef x; } RDar7257223; |
144 | void rdar_7257223_aux(RDar7257223 *p); |
145 | |
146 | CFDateRef rdar7257223_Create(void) { |
147 | RDar7257223 s; |
148 | CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); |
149 | s.x = CFDateCreate(0, t); // no-warning |
150 | rdar_7257223_aux(&s); |
151 | return s.x; |
152 | } |
153 | |
154 | CFDateRef rdar7257223_Create_2(void) { |
155 | RDar7257223 s; |
156 | CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); |
157 | s.x = CFDateCreate(0, t); // no-warning |
158 | return s.x; |
159 | } |
160 | |
161 | void rdar7283470(void) { |
162 | NSNumber *numbers[] = { |
163 | [[NSNumber alloc] initWithInt:1], // no-warning |
164 | [[NSNumber alloc] initWithInt:2], // no-warning |
165 | [[NSNumber alloc] initWithInt:3], // no-warning |
166 | [[NSNumber alloc] initWithInt:4], // no-warning |
167 | [[NSNumber alloc] initWithInt:5] // no-warning |
168 | }; |
169 | |
170 | for (unsigned i = 0 ; i < sizeof(numbers) / sizeof(numbers[0]) ; ++i) |
171 | [numbers[i] release]; |
172 | } |
173 | |
174 | void rdar7283470_positive(void) { |
175 | NSNumber *numbers[] = { |
176 | [[NSNumber alloc] initWithInt:1], // expected-warning{{leak}} |
177 | [[NSNumber alloc] initWithInt:2], // expected-warning{{leak}} |
178 | [[NSNumber alloc] initWithInt:3], // expected-warning{{leak}} |
179 | [[NSNumber alloc] initWithInt:4], // expected-warning{{leak}} |
180 | [[NSNumber alloc] initWithInt:5] // expected-warning{{leak}} |
181 | }; |
182 | } |
183 | |
184 | void rdar7283470_2(void) { |
185 | NSNumber *numbers[] = { |
186 | [[NSNumber alloc] initWithInt:1], // no-warning |
187 | [[NSNumber alloc] initWithInt:2], // no-warning |
188 | [[NSNumber alloc] initWithInt:3], // no-warning |
189 | [[NSNumber alloc] initWithInt:4], // no-warning |
190 | [[NSNumber alloc] initWithInt:5] // no-warning |
191 | }; |
192 | |
193 | NSArray *s_numbers =[[NSArray alloc] initWithObjects:&numbers[0] count:sizeof(numbers) / sizeof(numbers[0])]; |
194 | |
195 | for (unsigned i = 0 ; i < sizeof(numbers) / sizeof(numbers[0]) ; ++i) |
196 | [numbers[i] release]; |
197 | |
198 | [s_numbers release]; |
199 | } |
200 | |
201 | void rdar7283470_2_positive(void) { |
202 | NSNumber *numbers[] = { |
203 | [[NSNumber alloc] initWithInt:1], // no-warning |
204 | [[NSNumber alloc] initWithInt:2], // no-warning |
205 | [[NSNumber alloc] initWithInt:3], // no-warning |
206 | [[NSNumber alloc] initWithInt:4], // no-warning |
207 | [[NSNumber alloc] initWithInt:5] // no-warning |
208 | }; |
209 | |
210 | NSArray *s_numbers =[[NSArray alloc] initWithObjects: &numbers[0] count:sizeof(numbers) / sizeof(numbers[0])]; // expected-warning{{leak}} |
211 | |
212 | for (unsigned i = 0 ; i < sizeof(numbers) / sizeof(numbers[0]) ; ++i) |
213 | [numbers[i] release]; |
214 | } |
215 | |
216 | void pr6699(int x) { |
217 | CFDateRef values[2]; |
218 | values[0] = values[1] = 0; |
219 | |
220 | if (x) { |
221 | CFAbsoluteTime t = CFAbsoluteTimeGetCurrent(); |
222 | values[1] = CFDateCreate(0, t); |
223 | } |
224 | |
225 | if (values[1]) { |
226 | // A bug in RegionStore::RemoveDeadBindings caused 'values[1]' to get prematurely |
227 | // pruned from the store. |
228 | CFRelease(values[1]); // no-warning |
229 | } |
230 | } |
231 | |
232 | // <rdar://problem/8261992> Idempotent operation checker false positive with ObjC ivars |
233 | @interface R8261992 : NSObject { |
234 | @package int myIvar; |
235 | } |
236 | @end |
237 | |
238 | static void R8261992_ChangeMyIvar(R8261992 *tc) { |
239 | tc->myIvar = 5; |
240 | } |
241 | |
242 | void R8261992_test(R8261992 *tc) { |
243 | int temp = tc->myIvar; |
244 | // The ivar binding for tc->myIvar gets invalidated. |
245 | R8261992_ChangeMyIvar(tc); |
246 | tc->myIvar = temp; // no-warning |
247 | tc = [[R8261992 alloc] init]; |
248 | temp = tc->myIvar; // no-warning |
249 | // The ivar binding for tc->myIvar gets invalidated. |
250 | R8261992_ChangeMyIvar(tc); |
251 | tc->myIvar = temp; |
252 | [tc release]; // no-warning |
253 | // did we analyze this? |
254 | int *p = 0x0; |
255 | *p = 0xDEADBEEF; // expected-warning{{null}} |
256 | } |
257 | |
258 | |