From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/Analysis/retain-release-region-store.m | 257 ++++++++++++++++++++++ 1 file changed, 257 insertions(+) create mode 100644 clang/test/Analysis/retain-release-region-store.m (limited to 'clang/test/Analysis/retain-release-region-store.m') diff --git a/clang/test/Analysis/retain-release-region-store.m b/clang/test/Analysis/retain-release-region-store.m new file mode 100644 index 0000000..9173813 --- /dev/null +++ b/clang/test/Analysis/retain-release-region-store.m @@ -0,0 +1,257 @@ +// RUN: %clang_cc1 -analyze -analyzer-checker=core,osx.cocoa.RetainCount -analyzer-store=region -analyzer-max-loop 6 -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 {} +- (id)init; ++ (id)allocWithZone:(NSZone *)zone; ++ (id)alloc; +- (void)dealloc; +@end +typedef float CGFloat; +typedef double NSTimeInterval; +@interface NSDate : NSObject - (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 + +//===------------------------------------------------------------------------------------------===// +// (also ) - 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 + } +} + +// 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}} +} + -- cgit v1.2.3