retain-release-region-store.m revision 47dcd06e113c5a3b6621166acdb163734a1cfa33 
1// RUN: clang-cc -analyze -checker-cfref -analyzer-store=region -verify %s
2// XFAIL
3
4//===----------------------------------------------------------------------===//
5// The following code is reduced using delta-debugging from
6// Foundation.h (Mac OS X).
7//
8// It includes the basic definitions for the test cases below.
9// Not including Foundation.h directly makes this test case both svelte and
10// portable to non-Mac platforms.
11//===----------------------------------------------------------------------===//
12
13typedef unsigned int __darwin_natural_t;
14typedef unsigned long UInt32;
15typedef signed long CFIndex;
16typedef const void * CFTypeRef;
17typedef const struct __CFString * CFStringRef;
18typedef const struct __CFAllocator * CFAllocatorRef;
19extern const CFAllocatorRef kCFAllocatorDefault;
20extern CFTypeRef CFRetain(CFTypeRef cf);
21extern void CFRelease(CFTypeRef cf);
22typedef struct {
23}
24CFArrayCallBacks;
25extern const CFArrayCallBacks kCFTypeArrayCallBacks;
26typedef const struct __CFArray * CFArrayRef;
27typedef struct __CFArray * CFMutableArrayRef;
28extern CFMutableArrayRef CFArrayCreateMutable(CFAllocatorRef allocator, CFIndex capacity, const CFArrayCallBacks *callBacks);
29extern const void *CFArrayGetValueAtIndex(CFArrayRef theArray, CFIndex idx);
30typedef const struct __CFDictionary * CFDictionaryRef;
31typedef UInt32 CFStringEncoding;
32enum {
33kCFStringEncodingMacRoman = 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  };
34extern CFStringRef CFStringCreateWithCString(CFAllocatorRef alloc, const char *cStr, CFStringEncoding encoding);
35typedef double CFTimeInterval;
36typedef CFTimeInterval CFAbsoluteTime;
37typedef const struct __CFDate * CFDateRef;
38extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
39extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
40typedef __darwin_natural_t natural_t;
41typedef natural_t mach_port_name_t;
42typedef mach_port_name_t mach_port_t;
43typedef signed char BOOL;
44typedef struct _NSZone NSZone;
45@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
46@protocol NSObject
47- (BOOL)isEqual:(id)object;
48- (id)retain;
49- (oneway void)release;
50@end  @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone;
51@end  @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
52@end
53@interface NSObject <NSObject> {}
54+ (id)allocWithZone:(NSZone *)zone;
55+ (id)alloc;
56- (void)dealloc;
57@end
58typedef float CGFloat;
59typedef double NSTimeInterval;
60@interface NSDate : NSObject <NSCopying, NSCoding>  - (NSTimeInterval)timeIntervalSinceReferenceDate;
61@end      enum {
62NSObjCNoType = 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));
64typedef int kern_return_t;
65typedef kern_return_t mach_error_t;
66typedef mach_port_t io_object_t;
67typedef io_object_t io_service_t;
68typedef struct __DASession * DASessionRef;
69extern DASessionRef DASessionCreate( CFAllocatorRef allocator );
70typedef struct __DADisk * DADiskRef;
71extern DADiskRef DADiskCreateFromBSDName( CFAllocatorRef allocator, DASessionRef session, const char * name );
72extern DADiskRef DADiskCreateFromIOMedia( CFAllocatorRef allocator, DASessionRef session, io_service_t media );
73extern CFDictionaryRef DADiskCopyDescription( DADiskRef disk );
74extern DADiskRef DADiskCopyWholeDisk( DADiskRef disk );
75@interface NSAppleEventManager : NSObject {
76}
77@end enum {
78kDAReturnSuccess = 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 };
79typedef mach_error_t DAReturn;
80typedef const struct __DADissenter * DADissenterRef;
81extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
82@interface NSNumber : NSObject
83 - (id)initWithInt:(int)value;
84 @end
85
86//===----------------------------------------------------------------------===//
87// Test cases.
88//===----------------------------------------------------------------------===//
89
90// Test to see if we *issue* an error when we store the pointer
91// to a struct.  This differs from basic store.
92
93struct foo {
94  NSDate* f;
95};
96
97CFAbsoluteTime f4() {
98  struct foo x;
99  
100  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
101  CFDateRef date = CFDateCreate(0, t);  
102  [((NSDate*) date) retain];
103  CFRelease(date);
104  CFDateGetAbsoluteTime(date); // no-warning
105  x.f = (NSDate*) date;  
106  [((NSDate*) date) release];
107  t = CFDateGetAbsoluteTime(date);   // expected-warning{{Reference-counted object is used after it is released.}}
108  return t;
109}
110
111// Test that assigning to an self.ivar loses track of an object.
112// This is a temporary hack to reduce false positives.
113@interface Test3 : NSObject {
114  id myObj;
115}
116- (void)test_self_assign_ivar;
117@end
118
119@implementation Test3
120- (void)test_self_assign_ivar {
121  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
122  CFDateRef date = CFDateCreate(0, t); // no-warning
123  myObj = (id) date;
124}
125@end
126
127//===----------------------------------------------------------------------===//
128// <rdar://problem/7257223> - False positive due to not invalidating the
129// reference count of a tracked region that was itself invalidated.
130//===----------------------------------------------------------------------===//
131
132typedef struct __rdar_7257223 { CFDateRef x; } RDar7257223;
133void rdar_7257223_aux(RDar7257223 *p);
134
135// THIS CASE CURRENTLY FAILS.
136CFDateRef rdar7257223_Create(void) {
137  RDar7257223 s;
138  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
139  s.x = CFDateCreate(0, t); // no-warning
140  rdar_7257223_aux(&s);
141  return s.x;
142}
143
144CFDateRef rdar7257223_Create_2(void) {
145  RDar7257223 s;
146  CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
147  s.x = CFDateCreate(0, t); // no-warning
148  return s.x;
149}
150
151//===----------------------------------------------------------------------===//
152// <rdar://problem/7283470>
153//===----------------------------------------------------------------------===//
154
155void rdar7283470(void) {
156  NSNumber *numbers[] = {
157    [[NSNumber alloc] initWithInt:1], // no-warning
158    [[NSNumber alloc] initWithInt:2], // no-warning
159    [[NSNumber alloc] initWithInt:3], // no-warning
160    [[NSNumber alloc] initWithInt:4], // no-warning
161    [[NSNumber alloc] initWithInt:5]  // no-warning
162  };
163  
164  for (unsigned i = 0 ; i < sizeof(numbers) / sizeof(numbers[0]) ; ++i)
165    [numbers[i] release];
166}
167
168void rdar7283470_positive(void) {
169  NSNumber *numbers[] = {
170    [[NSNumber alloc] initWithInt:1], // expected-warning{{leak}}
171    [[NSNumber alloc] initWithInt:2], // expected-warning{{leak}}
172    [[NSNumber alloc] initWithInt:3], // expected-warning{{leak}}
173    [[NSNumber alloc] initWithInt:4], // expected-warning{{leak}}
174    [[NSNumber alloc] initWithInt:5]  // expected-warning{{leak}} 
175  };
176}
177
178