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-rw-r--r--test/Analysis/CFDate.m143
-rw-r--r--test/Analysis/CFDateGC.m41
-rw-r--r--test/Analysis/CFString.c60
-rw-r--r--test/Analysis/retain-release.m239
4 files changed, 272 insertions, 211 deletions
diff --git a/test/Analysis/CFDate.m b/test/Analysis/CFDate.m
deleted file mode 100644
index ed076c680b..0000000000
--- a/test/Analysis/CFDate.m
+++ /dev/null
@@ -1,143 +0,0 @@
-// RUN: clang -checker-cfref -verify %s
-
-//===----------------------------------------------------------------------===//
-// 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 const struct __CFAllocator * CFAllocatorRef;
-typedef double CFTimeInterval;
-typedef CFTimeInterval CFAbsoluteTime;
-typedef const struct __CFDate * CFDateRef;
-extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
-typedef struct objc_object {} *id;
-typedef signed char BOOL;
-typedef unsigned int NSUInteger;
-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> {} @end
-extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
-typedef double NSTimeInterval;
-@interface NSDate : NSObject <NSCopying, NSCoding> - (NSTimeInterval)timeIntervalSinceReferenceDate; @end
-@class NSString, NSArray, NSTimeZone;
-
-//===----------------------------------------------------------------------===//
-// Test cases.
-//===----------------------------------------------------------------------===//
-
-CFAbsoluteTime f1() {
- CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
- CFDateRef date = CFDateCreate(0, t);
- CFRetain(date);
- CFRelease(date);
- CFDateGetAbsoluteTime(date); // no-warning
- CFRelease(date);
- t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
- return t;
-}
-
-CFAbsoluteTime f2() {
- CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
- CFDateRef date = CFDateCreate(0, t);
- [((NSDate*) date) retain];
- CFRelease(date);
- CFDateGetAbsoluteTime(date); // no-warning
- [((NSDate*) date) release];
- t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
- return t;
-}
-
-
-NSDate* global_x;
-
- // Test to see if we supresss an error when we store the pointer
- // to a global.
-
-CFAbsoluteTime f3() {
- CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
- CFDateRef date = CFDateCreate(0, t);
- [((NSDate*) date) retain];
- CFRelease(date);
- CFDateGetAbsoluteTime(date); // no-warning
- global_x = (NSDate*) date;
- [((NSDate*) date) release];
- t = CFDateGetAbsoluteTime(date); // no-warning
- return t;
-}
-
-// Test to see if we supresss an error when we store the pointer
-// to a struct.
-
-struct foo {
- NSDate* f;
-};
-
-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];
- t = CFDateGetAbsoluteTime(date); // no-warning
- return t;
-}
-
-// Test a leak.
-
-CFAbsoluteTime f5(int x) {
- CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
- CFDateRef date = CFDateCreate(0, t);
-
- if (x)
- CFRelease(date);
-
- return t; // expected-warning{{leak}}
-}
-
-// Test a leak involving the return.
-
-CFDateRef f6(int x) {
- CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
- CFRetain(date);
- return date; // expected-warning{{leak}}
-}
-
-// Test a leak involving an overwrite.
-
-CFDateRef f7() {
- CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
- CFRetain(date); //expected-warning{{leak}}
- date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
- return date;
-}
-
-// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and
-// has the word create.
-
-CFDateRef MyDateCreate();
-
-CFDateRef f8() {
- CFDateRef date = MyDateCreate();
- CFRetain(date);
- return date; // expected-warning{{leak}}
-}
-
-CFDateRef f9() {
- CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
- int *p = 0;
- // test that the checker assumes that CFDateCreate returns a non-null
- // pointer
- if (!date) *p = 1; // no-warning
- return date;
-}
diff --git a/test/Analysis/CFDateGC.m b/test/Analysis/CFDateGC.m
index 311371399a..04d2209a3c 100644
--- a/test/Analysis/CFDateGC.m
+++ b/test/Analysis/CFDateGC.m
@@ -10,24 +10,28 @@
//===----------------------------------------------------------------------===//
typedef const void * CFTypeRef;
+void CFRelease(CFTypeRef cf);
+CFTypeRef CFRetain(CFTypeRef cf);
+CFTypeRef CFMakeCollectable(CFTypeRef cf);
typedef const struct __CFAllocator * CFAllocatorRef;
typedef double CFTimeInterval;
typedef CFTimeInterval CFAbsoluteTime;
typedef const struct __CFDate * CFDateRef;
extern CFDateRef CFDateCreate(CFAllocatorRef allocator, CFAbsoluteTime at);
+extern CFAbsoluteTime CFDateGetAbsoluteTime(CFDateRef theDate);
+typedef struct objc_object {} *id;
typedef signed char BOOL;
-typedef unsigned int NSUInteger;
-typedef struct _NSZone NSZone;
static __inline__ __attribute__((always_inline)) id NSMakeCollectable(CFTypeRef cf) {}
-@protocol NSObject - (BOOL)isEqual:(id)object; - (oneway void)release; @end
-extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
-CFTypeRef CFMakeCollectable(CFTypeRef cf);
+@protocol NSObject - (BOOL)isEqual:(id)object;
+- (oneway void)release;
+@end
+@class NSArray;
//===----------------------------------------------------------------------===//
// Test cases.
//===----------------------------------------------------------------------===//
-CFAbsoluteTime f1() {
+CFAbsoluteTime f1_use_after_release() {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t);
CFRetain(date);
@@ -38,7 +42,20 @@ CFAbsoluteTime f1() {
return t;
}
-CFAbsoluteTime f1b() {
+// The following two test cases verifies that CFMakeCollectable is a no-op
+// in non-GC mode and a "release" in GC mode.
+CFAbsoluteTime f2_leak() {
+ CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
+ CFDateRef date = CFDateCreate(0, t);
+ CFRetain(date);
+ [(id) CFMakeCollectable(date) release];
+ CFDateGetAbsoluteTime(date); // no-warning
+ CFRelease(date);
+ t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
+ return t;
+}
+
+CFAbsoluteTime f2_noleak() {
CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
CFDateRef date = CFDateCreate(0, t);
CFRetain(date);
@@ -49,4 +66,12 @@ CFAbsoluteTime f1b() {
return t;
}
-
+// The following test case verifies that we "stop tracking" a retained object
+// when it is passed as an argument to an implicitly defined function.
+CFAbsoluteTime f4() {
+ CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
+ CFDateRef date = CFDateCreate(0, t);
+ CFRetain(date);
+ some_implicitly_defined_function_stop_tracking(date); // no-warning
+ return t;
+}
diff --git a/test/Analysis/CFString.c b/test/Analysis/CFString.c
deleted file mode 100644
index cb53bb1c66..0000000000
--- a/test/Analysis/CFString.c
+++ /dev/null
@@ -1,60 +0,0 @@
-// RUN: clang -checker-cfref -pedantic -verify %s
-
-//===----------------------------------------------------------------------===//
-// The following code is reduced using delta-debugging from
-// CoreFoundation.h (Mac OS X).
-//
-// It includes the basic definitions for the test cases below.
-// Not directly including CoreFoundation.h directly makes this test case
-// both svelte and portable to non-Mac platforms.
-//===----------------------------------------------------------------------===//
-
-typedef unsigned long UInt32;
-typedef unsigned char Boolean;
-typedef signed long CFIndex;
-typedef const void * CFTypeRef;
-typedef const struct __CFString * CFStringRef;
-typedef struct { CFIndex location; } CFRange;
-typedef const struct __CFAllocator * CFAllocatorRef;
-extern void CFRelease(CFTypeRef cf);
-typedef Boolean (*CFArrayEqualCallBack)(const void *value1, const void *value2);
-typedef struct { CFArrayEqualCallBack equal; } 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);
-extern void CFArrayAppendValue(CFMutableArrayRef theArray, const void *value);
-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);
-
-//===----------------------------------------------------------------------===//
-// Test cases.
-//===----------------------------------------------------------------------===//
-
-void f1() {
-
- // Create the array.
- CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
-
- // Create a string.
- CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
- kCFStringEncodingUTF8);
-
- // Add the string to the array.
- CFArrayAppendValue(A, s1);
-
- // Decrement the reference count.
- CFRelease(s1); // no-warning
-
- // Get the string. We don't own it.
- s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
-
- // Release the array.
- CFRelease(A); // no-warning
-
- // Release the string. This is a bug.
- CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
-}
-
diff --git a/test/Analysis/retain-release.m b/test/Analysis/retain-release.m
new file mode 100644
index 0000000000..b548f2d26b
--- /dev/null
+++ b/test/Analysis/retain-release.m
@@ -0,0 +1,239 @@
+// RUN: clang -checker-cfref -verify %s
+
+//===----------------------------------------------------------------------===//
+// 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> {
+}
+@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 = (((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 };
+typedef mach_error_t DAReturn;
+typedef const struct __DADissenter * DADissenterRef;
+extern DADissenterRef DADissenterCreate( CFAllocatorRef allocator, DAReturn status, CFStringRef string );
+
+//===----------------------------------------------------------------------===//
+// Test cases.
+//===----------------------------------------------------------------------===//
+
+CFAbsoluteTime f1() {
+ CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
+ CFDateRef date = CFDateCreate(0, t);
+ CFRetain(date);
+ CFRelease(date);
+ CFDateGetAbsoluteTime(date); // no-warning
+ CFRelease(date);
+ t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
+ return t;
+}
+
+CFAbsoluteTime f2() {
+ CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
+ CFDateRef date = CFDateCreate(0, t);
+ [((NSDate*) date) retain];
+ CFRelease(date);
+ CFDateGetAbsoluteTime(date); // no-warning
+ [((NSDate*) date) release];
+ t = CFDateGetAbsoluteTime(date); // expected-warning{{Reference-counted object is used after it is released.}}
+ return t;
+}
+
+
+NSDate* global_x;
+
+// Test to see if we supresss an error when we store the pointer
+// to a global.
+
+CFAbsoluteTime f3() {
+ CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
+ CFDateRef date = CFDateCreate(0, t);
+ [((NSDate*) date) retain];
+ CFRelease(date);
+ CFDateGetAbsoluteTime(date); // no-warning
+ global_x = (NSDate*) date;
+ [((NSDate*) date) release];
+ t = CFDateGetAbsoluteTime(date); // no-warning
+ return t;
+}
+
+// Test to see if we supresss an error when we store the pointer
+// to a struct.
+
+struct foo {
+ NSDate* f;
+};
+
+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];
+ t = CFDateGetAbsoluteTime(date); // no-warning
+ return t;
+}
+
+// Test a leak.
+
+CFAbsoluteTime f5(int x) {
+ CFAbsoluteTime t = CFAbsoluteTimeGetCurrent();
+ CFDateRef date = CFDateCreate(0, t);
+
+ if (x)
+ CFRelease(date);
+
+ return t; // expected-warning{{leak}}
+}
+
+// Test a leak involving the return.
+
+CFDateRef f6(int x) {
+ CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
+ CFRetain(date);
+ return date; // expected-warning{{leak}}
+}
+
+// Test a leak involving an overwrite.
+
+CFDateRef f7() {
+ CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
+ CFRetain(date); //expected-warning{{leak}}
+ date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
+ return date;
+}
+
+// Generalization of Create rule. MyDateCreate returns a CFXXXTypeRef, and
+// has the word create.
+CFDateRef MyDateCreate();
+
+CFDateRef f8() {
+ CFDateRef date = MyDateCreate();
+ CFRetain(date);
+ return date; // expected-warning{{leak}}
+}
+
+CFDateRef f9() {
+ CFDateRef date = CFDateCreate(0, CFAbsoluteTimeGetCurrent());
+ int *p = 0;
+ // test that the checker assumes that CFDateCreate returns a non-null
+ // pointer
+ if (!date) *p = 1; // no-warning
+ return date;
+}
+
+// Handle DiskArbitration API:
+//
+// http://developer.apple.com/DOCUMENTATION/DARWIN/Reference/DiscArbitrationFramework/
+//
+void f10(io_service_t media, DADiskRef d, CFStringRef s) {
+ DADiskRef disk = DADiskCreateFromBSDName(kCFAllocatorDefault, 0, "hello");
+ if (disk) NSLog(@"ok"); // expected-warning{{leak}}
+
+ disk = DADiskCreateFromIOMedia(kCFAllocatorDefault, 0, media);
+ if (disk) NSLog(@"ok"); // expected-warning{{leak}}
+
+ CFDictionaryRef dict = DADiskCopyDescription(d);
+ if (dict) NSLog(@"ok"); // expected-warning{{leak}}
+
+ disk = DADiskCopyWholeDisk(d);
+ if (disk) NSLog(@"ok"); // expected-warning{{leak}}
+
+ DADissenterRef dissenter = DADissenterCreate(kCFAllocatorDefault,
+ kDAReturnSuccess, s);
+ if (dissenter) NSLog(@"ok"); // expected-warning{{leak}}
+
+ DASessionRef session = DASessionCreate(kCFAllocatorDefault);
+ if (session) NSLog(@"ok"); // expected-warning{{leak}}
+}
+
+// Test retain/release checker with CFString and CFMutableArray.
+void f11() {
+ // Create the array.
+ CFMutableArrayRef A = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks);
+
+ // Create a string.
+ CFStringRef s1 = CFStringCreateWithCString(0, "hello world",
+ kCFStringEncodingUTF8);
+
+ // Add the string to the array.
+ CFArrayAppendValue(A, s1);
+
+ // Decrement the reference count.
+ CFRelease(s1); // no-warning
+
+ // Get the string. We don't own it.
+ s1 = (CFStringRef) CFArrayGetValueAtIndex(A, 0);
+
+ // Release the array.
+ CFRelease(A); // no-warning
+
+ // Release the string. This is a bug.
+ CFRelease(s1); // expected-warning{{Incorrect decrement of the reference count}}
+}
+
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