431 lines
13 KiB
Objective-C
431 lines
13 KiB
Objective-C
// RUN: %clang_cc1 -triple i386-apple-darwin10 -analyze -analyzer-checker=core,osx.cocoa.NilArg,osx.cocoa.RetainCount,alpha.core -analyzer-store=region -analyzer-constraints=range -verify -Wno-objc-root-class %s
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// RUN: %clang_cc1 -triple i386-apple-darwin10 -analyze -analyzer-checker=core,osx.cocoa.NilArg,osx.cocoa.RetainCount,alpha.core -analyzer-store=region -analyzer-constraints=range -analyzer-config mode=shallow -verify -Wno-objc-root-class %s
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// RUN: %clang_cc1 -DTEST_64 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.cocoa.NilArg,osx.cocoa.RetainCount,alpha.core -analyzer-store=region -analyzer-constraints=range -verify -Wno-objc-root-class %s
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//===----------------------------------------------------------------------===//
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// The following code is reduced using delta-debugging from
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// Foundation.h (Mac OS X).
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//
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// It includes the basic definitions for the test cases below.
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// Not directly including Foundation.h directly makes this test case
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// both svelte and portable to non-Mac platforms.
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//===----------------------------------------------------------------------===//
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#ifdef TEST_64
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typedef long long int64_t;
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_Bool OSAtomicCompareAndSwap64Barrier( int64_t __oldValue, int64_t __newValue, volatile int64_t *__theValue );
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#define COMPARE_SWAP_BARRIER OSAtomicCompareAndSwap64Barrier
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typedef int64_t intptr_t;
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#else
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typedef int int32_t;
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_Bool OSAtomicCompareAndSwap32Barrier( int32_t __oldValue, int32_t __newValue, volatile int32_t *__theValue );
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#define COMPARE_SWAP_BARRIER OSAtomicCompareAndSwap32Barrier
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typedef int32_t intptr_t;
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#endif
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typedef const void * CFTypeRef;
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typedef const struct __CFString * CFStringRef;
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typedef const struct __CFAllocator * CFAllocatorRef;
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extern const CFAllocatorRef kCFAllocatorDefault;
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extern CFTypeRef CFRetain(CFTypeRef cf);
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void CFRelease(CFTypeRef cf);
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typedef const struct __CFDictionary * CFDictionaryRef;
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const void *CFDictionaryGetValue(CFDictionaryRef theDict, const void *key);
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extern CFStringRef CFStringCreateWithFormat(CFAllocatorRef alloc, CFDictionaryRef formatOptions, CFStringRef format, ...);
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typedef signed char BOOL;
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typedef int NSInteger;
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typedef unsigned int NSUInteger;
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@class NSString, Protocol;
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extern void NSLog(NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));
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typedef NSInteger NSComparisonResult;
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typedef struct _NSZone NSZone;
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@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
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@protocol NSObject
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- (BOOL)isEqual:(id)object;
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- (oneway void)release;
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- (id)retain;
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- (id)autorelease;
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@end
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@protocol NSCopying
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- (id)copyWithZone:(NSZone *)zone;
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@end
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@protocol NSMutableCopying
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- (id)mutableCopyWithZone:(NSZone *)zone;
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@end
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@protocol NSCoding
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- (void)encodeWithCoder:(NSCoder *)aCoder;
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@end
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@interface NSObject <NSObject> {}
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- (id)init;
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+ (id)alloc;
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@end
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extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
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typedef struct {} NSFastEnumerationState;
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@protocol NSFastEnumeration
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- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
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@end
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@class NSString;
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typedef struct _NSRange {} NSRange;
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@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>
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- (NSUInteger)count;
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@end
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@interface NSMutableArray : NSArray
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- (void)addObject:(id)anObject;
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- (id)initWithCapacity:(NSUInteger)numItems;
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@end
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typedef unsigned short unichar;
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@class NSData, NSArray, NSDictionary, NSCharacterSet, NSData, NSURL, NSError, NSLocale;
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typedef NSUInteger NSStringCompareOptions;
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@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length;
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- (NSComparisonResult)compare:(NSString *)string;
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- (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask;
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- (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask range:(NSRange)compareRange;
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- (NSComparisonResult)compare:(NSString *)string options:(NSStringCompareOptions)mask range:(NSRange)compareRange locale:(id)locale;
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- (NSComparisonResult)caseInsensitiveCompare:(NSString *)string;
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- (NSArray *)componentsSeparatedByCharactersInSet:(NSCharacterSet *)separator;
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+ (id)stringWithFormat:(NSString *)format, ... __attribute__((format(__NSString__, 1, 2)));
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@end
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@interface NSSimpleCString : NSString {} @end
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@interface NSConstantString : NSSimpleCString @end
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extern void *_NSConstantStringClassReference;
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//===----------------------------------------------------------------------===//
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// Test cases.
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//===----------------------------------------------------------------------===//
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NSComparisonResult f1(NSString* s) {
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NSString *aString = 0;
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return [s compare:aString]; // expected-warning {{Argument to 'NSString' method 'compare:' cannot be nil}}
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}
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NSComparisonResult f2(NSString* s) {
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NSString *aString = 0;
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return [s caseInsensitiveCompare:aString]; // expected-warning {{Argument to 'NSString' method 'caseInsensitiveCompare:' cannot be nil}}
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}
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NSComparisonResult f3(NSString* s, NSStringCompareOptions op) {
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NSString *aString = 0;
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return [s compare:aString options:op]; // expected-warning {{Argument to 'NSString' method 'compare:options:' cannot be nil}}
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}
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NSComparisonResult f4(NSString* s, NSStringCompareOptions op, NSRange R) {
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NSString *aString = 0;
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return [s compare:aString options:op range:R]; // expected-warning {{Argument to 'NSString' method 'compare:options:range:' cannot be nil}}
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}
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NSComparisonResult f5(NSString* s, NSStringCompareOptions op, NSRange R) {
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NSString *aString = 0;
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return [s compare:aString options:op range:R locale:0]; // expected-warning {{Argument to 'NSString' method 'compare:options:range:locale:' cannot be nil}}
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}
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NSArray *f6(NSString* s) {
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return [s componentsSeparatedByCharactersInSet:0]; // expected-warning {{Argument to 'NSString' method 'componentsSeparatedByCharactersInSet:' cannot be nil}}
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}
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NSString* f7(NSString* s1, NSString* s2, NSString* s3) {
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NSString* s4 = (NSString*)
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CFStringCreateWithFormat(kCFAllocatorDefault, 0, // expected-warning{{leak}}
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(CFStringRef) __builtin___CFStringMakeConstantString("%@ %@ (%@)"),
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s1, s2, s3);
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CFRetain(s4);
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return s4;
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}
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NSMutableArray* f8() {
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NSString* s = [[NSString alloc] init];
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NSMutableArray* a = [[NSMutableArray alloc] initWithCapacity:2];
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[a addObject:s];
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[s release]; // no-warning
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return a;
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}
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void f9() {
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NSString* s = [[NSString alloc] init];
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NSString* q = s;
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[s release];
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[q release]; // expected-warning {{used after it is released}}
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}
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NSString* f10() {
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static NSString* s = 0;
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if (!s) s = [[NSString alloc] init];
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return s; // no-warning
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}
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// Test case for regression reported in <rdar://problem/6452745>.
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// Essentially 's' should not be considered allocated on the false branch.
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// This exercises the 'EvalAssume' logic in GRTransferFuncs (CFRefCount.cpp).
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NSString* f11(CFDictionaryRef dict, const char* key) {
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NSString* s = (NSString*) CFDictionaryGetValue(dict, key);
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[s retain];
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if (s) {
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[s release];
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}
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return 0;
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}
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// Test case for passing a tracked object by-reference to a function we
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// don't understand.
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void unknown_function_f12(NSString** s);
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void f12() {
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NSString *string = [[NSString alloc] init];
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unknown_function_f12(&string); // no-warning
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}
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// Test double release of CFString (PR 4014).
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void f13(void) {
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CFStringRef ref = CFStringCreateWithFormat(kCFAllocatorDefault, ((void*)0), ((CFStringRef) __builtin___CFStringMakeConstantString ("" "%d" "")), 100);
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CFRelease(ref);
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CFRelease(ref); // expected-warning{{Reference-counted object is used after it is released}}
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}
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@interface MyString : NSString
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@end
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void f14(MyString *s) {
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[s compare:0]; // expected-warning {{Argument to 'MyString' method 'compare:' cannot be nil}}
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}
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// Test regular use of -autorelease
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@interface TestAutorelease
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-(NSString*) getString;
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@end
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@implementation TestAutorelease
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-(NSString*) getString {
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NSString *str = [[NSString alloc] init];
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return [str autorelease]; // no-warning
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}
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- (void)m1
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{
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NSString *s = [[NSString alloc] init]; // expected-warning{{leak}}
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[s retain];
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[s autorelease];
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}
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- (void)m2
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{
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NSString *s = [[[NSString alloc] init] autorelease]; // expected-warning{{leak}}
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[s retain];
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}
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- (void)m3
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{
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NSString *s = [[[NSString alloc] init] autorelease];
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[s retain];
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[s autorelease];
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}
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- (void)m4
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{
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NSString *s = [[NSString alloc] init]; // expected-warning{{leak}}
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[s retain];
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}
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- (void)m5
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{
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NSString *s = [[NSString alloc] init];
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[s autorelease];
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}
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@end
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@interface C1 : NSObject {}
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- (NSString*) getShared;
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+ (C1*) sharedInstance;
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@end
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@implementation C1 : NSObject {}
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- (NSString*) getShared {
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static NSString* s = 0;
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if (!s) s = [[NSString alloc] init];
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return s; // no-warning
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}
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+ (C1 *)sharedInstance {
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static C1 *sharedInstance = 0;
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if (!sharedInstance) {
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sharedInstance = [[C1 alloc] init];
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}
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return sharedInstance; // no-warning
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}
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@end
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@interface SharedClass : NSObject
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+ (id)sharedInstance;
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- (id)notShared;
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@end
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@implementation SharedClass
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- (id)_init {
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if ((self = [super init])) {
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NSLog(@"Bar");
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}
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return self;
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}
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- (id)notShared {
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return [[SharedClass alloc] _init]; // expected-warning{{leak}}
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}
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+ (id)sharedInstance {
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static SharedClass *_sharedInstance = 0;
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if (!_sharedInstance) {
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_sharedInstance = [[SharedClass alloc] _init];
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}
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return _sharedInstance; // no-warning
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}
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@end
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id testSharedClassFromFunction() {
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return [[SharedClass alloc] _init]; // no-warning
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}
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// Test OSCompareAndSwap
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_Bool OSAtomicCompareAndSwapPtr( void *__oldValue, void *__newValue, void * volatile *__theValue );
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extern BOOL objc_atomicCompareAndSwapPtr(id predicate, id replacement, volatile id *objectLocation);
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void testOSCompareAndSwap() {
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NSString *old = 0;
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!OSAtomicCompareAndSwapPtr(0, s, (void**) &old))
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[s release];
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else
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[old release];
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}
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void testOSCompareAndSwapXXBarrier_local() {
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NSString *old = 0;
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) &old))
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[s release];
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else
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[old release];
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}
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void testOSCompareAndSwapXXBarrier_local_no_direct_release() {
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NSString *old = 0;
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) &old))
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return;
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else
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[old release];
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}
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int testOSCompareAndSwapXXBarrier_id(Class myclass, id xclass) {
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if (COMPARE_SWAP_BARRIER(0, (intptr_t) myclass, (intptr_t*) &xclass))
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return 1;
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return 0;
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}
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void test_objc_atomicCompareAndSwap_local() {
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NSString *old = 0;
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!objc_atomicCompareAndSwapPtr(0, s, &old))
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[s release];
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else
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[old release];
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}
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void test_objc_atomicCompareAndSwap_local_no_direct_release() {
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NSString *old = 0;
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!objc_atomicCompareAndSwapPtr(0, s, &old))
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return;
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else
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[old release];
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}
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void test_objc_atomicCompareAndSwap_parameter(NSString **old) {
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!objc_atomicCompareAndSwapPtr(0, s, old))
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[s release];
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else
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[*old release];
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}
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void test_objc_atomicCompareAndSwap_parameter_no_direct_release(NSString **old) {
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NSString *s = [[NSString alloc] init]; // expected-warning{{leak}}
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if (!objc_atomicCompareAndSwapPtr(0, s, old))
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return;
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else
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[*old release];
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}
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// Test stringWithFormat (<rdar://problem/6815234>)
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void test_stringWithFormat() {
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NSString *string = [[NSString stringWithFormat:@"%ld", (long) 100] retain];
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[string release];
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[string release]; // expected-warning{{Incorrect decrement of the reference count}}
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}
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// Test isTrackedObjectType().
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typedef NSString* WonkyTypedef;
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@interface TestIsTracked
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+ (WonkyTypedef)newString;
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@end
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void test_isTrackedObjectType(void) {
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NSString *str = [TestIsTracked newString]; // expected-warning{{Potential leak}}
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}
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// Test isTrackedCFObjectType().
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@interface TestIsCFTracked
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+ (CFStringRef) badNewCFString;
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+ (CFStringRef) newCFString;
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@end
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@implementation TestIsCFTracked
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+ (CFStringRef) newCFString {
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return CFStringCreateWithFormat(kCFAllocatorDefault, ((void*)0), ((CFStringRef) __builtin___CFStringMakeConstantString ("" "%d" "")), 100); // no-warning
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}
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+ (CFStringRef) badNewCFString {
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return CFStringCreateWithFormat(kCFAllocatorDefault, ((void*)0), ((CFStringRef) __builtin___CFStringMakeConstantString ("" "%d" "")), 100); // expected-warning{{leak}}
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}
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// Test @synchronized
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void test_synchronized(id x) {
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@synchronized(x) {
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NSString *string = [[NSString stringWithFormat:@"%ld", (long) 100] retain]; // expected-warning {{leak}}
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}
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}
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@end
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void testOSCompareAndSwapXXBarrier_parameter(NSString **old) {
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) old))
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[s release];
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else
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[*old release];
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}
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void testOSCompareAndSwapXXBarrier_parameter_no_direct_release(NSString **old) {
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NSString *s = [[NSString alloc] init]; // no-warning
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if (!COMPARE_SWAP_BARRIER((intptr_t) 0, (intptr_t) s, (intptr_t*) old))
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[s release];
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else
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return;
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}
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@interface AlwaysInlineBodyFarmBodies : NSObject {
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NSString *_value;
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}
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- (NSString *)_value;
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- (void)callValue;
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@end
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@implementation AlwaysInlineBodyFarmBodies
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- (NSString *)_value {
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if (!_value) {
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NSString *s = [[NSString alloc] init];
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if (!OSAtomicCompareAndSwapPtr(0, s, (void**)&_value)) {
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[s release];
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}
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}
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return _value;
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}
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- (void)callValue {
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[self _value];
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}
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@end |