зеркало из https://github.com/microsoft/clang-1.git
296 строки
10 KiB
Plaintext
296 строки
10 KiB
Plaintext
// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -analyzer-store=region -verify -fblocks %s
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#include "Inputs/system-header-simulator-objc.h"
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typedef __typeof(sizeof(int)) size_t;
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void *malloc(size_t);
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void free(void *);
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@interface Wrapper : NSData
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- (id)initWithBytesNoCopy:(void *)bytes length:(NSUInteger)len;
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@end
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@implementation Wrapper
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- (id)initWithBytesNoCopy:(void *)bytes length:(NSUInteger)len {
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return [self initWithBytesNoCopy:bytes length:len freeWhenDone:1]; // no-warning
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}
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@end
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// Done with headers. Start testing.
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void testNSDatafFreeWhenDoneNoError(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSData *nsdata = [NSData dataWithBytesNoCopy:data length:dataLength];
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}
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void testNSDataFreeWhenDoneYES(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSData *nsdata = [NSData dataWithBytesNoCopy:data length:dataLength freeWhenDone:1]; // no-warning
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}
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void testNSDataFreeWhenDoneYES2(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSData *nsdata = [[NSData alloc] initWithBytesNoCopy:data length:dataLength freeWhenDone:1]; // no-warning
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}
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void testNSDataFreeWhenDoneYES2_with_wrapper(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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Wrapper *nsdata = [[Wrapper alloc] initWithBytesNoCopy:data length:dataLength]; // no-warning
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}
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void testNSStringFreeWhenDoneYES3(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSString *nsstr = [[NSString alloc] initWithBytesNoCopy:data length:dataLength encoding:NSUTF8StringEncoding freeWhenDone:1];
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}
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void testNSStringFreeWhenDoneYES4(NSUInteger dataLength) {
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unichar *data = (unichar*)malloc(42);
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NSString *nsstr = [[NSString alloc] initWithCharactersNoCopy:data length:dataLength freeWhenDone:1];
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free(data); //expected-warning {{Attempt to free non-owned memory}}
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}
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void testNSStringFreeWhenDoneYES(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSString *nsstr = [[NSString alloc] initWithBytesNoCopy:data length:dataLength encoding:NSUTF8StringEncoding freeWhenDone:1]; // no-warning
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}
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void testNSStringFreeWhenDoneYES2(NSUInteger dataLength) {
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unichar *data = (unichar*)malloc(42);
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NSString *nsstr = [[NSString alloc] initWithCharactersNoCopy:data length:dataLength freeWhenDone:1]; // no-warning
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}
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void testNSDataFreeWhenDoneNO(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSData *nsdata = [NSData dataWithBytesNoCopy:data length:dataLength freeWhenDone:0]; // expected-warning{{leak}}
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}
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void testNSDataFreeWhenDoneNO2(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSData *nsdata = [[NSData alloc] initWithBytesNoCopy:data length:dataLength freeWhenDone:0]; // expected-warning{{leak}}
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}
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void testNSStringFreeWhenDoneNO(NSUInteger dataLength) {
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unsigned char *data = (unsigned char *)malloc(42);
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NSString *nsstr = [[NSString alloc] initWithBytesNoCopy:data length:dataLength encoding:NSUTF8StringEncoding freeWhenDone:0]; // expected-warning{{leak}}
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}
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void testNSStringFreeWhenDoneNO2(NSUInteger dataLength) {
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unichar *data = (unichar*)malloc(42);
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NSString *nsstr = [[NSString alloc] initWithCharactersNoCopy:data length:dataLength freeWhenDone:0]; // expected-warning{{leak}}
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}
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void testRelinquished1() {
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void *data = malloc(42);
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NSData *nsdata = [NSData dataWithBytesNoCopy:data length:42 freeWhenDone:1];
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free(data); // expected-warning {{Attempt to free non-owned memory}}
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}
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void testRelinquished2() {
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void *data = malloc(42);
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NSData *nsdata;
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free(data);
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[NSData dataWithBytesNoCopy:data length:42]; // expected-warning {{Attempt to free released memory}}
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}
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// Test CF/NS...NoCopy. PR12100: Pointers can escape when custom deallocators are provided.
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void testNSDatafFreeWhenDone(NSUInteger dataLength) {
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CFStringRef str;
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char *bytes = (char*)malloc(12);
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str = CFStringCreateWithCStringNoCopy(0, bytes, NSNEXTSTEPStringEncoding, 0); // no warning
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CFRelease(str); // default allocator also frees bytes
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}
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void stringWithExternalContentsExample(void) {
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#define BufferSize 1000
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CFMutableStringRef mutStr;
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UniChar *myBuffer;
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myBuffer = (UniChar *)malloc(BufferSize * sizeof(UniChar));
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mutStr = CFStringCreateMutableWithExternalCharactersNoCopy(0, myBuffer, 0, BufferSize, kCFAllocatorNull); // expected-warning{{leak}}
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CFRelease(mutStr);
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//free(myBuffer);
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}
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// PR12101 : pointers can escape through custom deallocators set on creation of a container.
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void TestCallbackReleasesMemory(CFDictionaryKeyCallBacks keyCallbacks) {
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void *key = malloc(12);
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void *val = malloc(12);
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CFMutableDictionaryRef x = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &keyCallbacks, &kCFTypeDictionaryValueCallBacks);
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CFDictionarySetValue(x, key, val);
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return;// no-warning
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}
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NSData *radar10976702() {
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void *bytes = malloc(10);
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return [NSData dataWithBytesNoCopy:bytes length:10]; // no-warning
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}
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void testBlocks() {
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int *x= (int*)malloc(sizeof(int));
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int (^myBlock)(int) = ^(int num) {
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free(x);
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return num;
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};
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myBlock(3);
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}
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// Test NSMapInsert.
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@interface NSMapTable : NSObject <NSCopying, NSCoding, NSFastEnumeration>
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@end
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extern void *NSMapGet(NSMapTable *table, const void *key);
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extern void NSMapInsert(NSMapTable *table, const void *key, const void *value);
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extern void NSMapInsertKnownAbsent(NSMapTable *table, const void *key, const void *value);
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char *strdup(const char *s);
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NSString * radar11152419(NSString *string1, NSMapTable *map) {
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const char *strkey = "key";
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NSString *string = ( NSString *)NSMapGet(map, strkey);
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if (!string) {
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string = [string1 copy];
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NSMapInsert(map, strdup(strkey), (void*)string); // no warning
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NSMapInsertKnownAbsent(map, strdup(strkey), (void*)string); // no warning
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}
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return string;
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}
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// Test that we handle pointer escaping through OSAtomicEnqueue.
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typedef volatile struct {
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void *opaque1;
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long opaque2;
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} OSQueueHead;
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void OSAtomicEnqueue( OSQueueHead *__list, void *__new, size_t __offset) __attribute__((weak_import));
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static inline void radar11111210(OSQueueHead *pool) {
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void *newItem = malloc(4);
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OSAtomicEnqueue(pool, newItem, 4);
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}
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// Pointer might escape through CGDataProviderCreateWithData (radar://11187558).
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typedef struct CGDataProvider *CGDataProviderRef;
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typedef void (*CGDataProviderReleaseDataCallback)(void *info, const void *data,
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size_t size);
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extern CGDataProviderRef CGDataProviderCreateWithData(void *info,
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const void *data, size_t size,
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CGDataProviderReleaseDataCallback releaseData)
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__attribute__((visibility("default")));
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void *calloc(size_t, size_t);
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static void releaseDataCallback (void *info, const void *data, size_t size) {
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#pragma unused (info, size)
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free((void*)data);
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}
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void testCGDataProviderCreateWithData() {
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void* b = calloc(8, 8);
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CGDataProviderRef p = CGDataProviderCreateWithData(0, b, 8*8, releaseDataCallback);
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}
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// Assume that functions which take a function pointer can free memory even if
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// they are defined in system headers and take the const pointer to the
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// allocated memory. (radar://11160612)
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extern CGDataProviderRef UnknownFunWithCallback(void *info,
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const void *data, size_t size,
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CGDataProviderReleaseDataCallback releaseData)
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__attribute__((visibility("default")));
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void testUnknownFunWithCallBack() {
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void* b = calloc(8, 8);
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CGDataProviderRef p = UnknownFunWithCallback(0, b, 8*8, releaseDataCallback);
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}
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// Test blocks.
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void acceptBlockParam(void *, void (^block)(void *), unsigned);
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void testCallWithBlockCallback() {
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void *l = malloc(12);
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acceptBlockParam(l, ^(void *i) { free(i); }, sizeof(char *));
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}
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// Test blocks in system headers.
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void testCallWithBlockCallbackInSystem() {
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void *l = malloc(12);
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SystemHeaderFunctionWithBlockParam(l, ^(void *i) { free(i); }, sizeof(char *));
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}
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// Test escape into NSPointerArray. radar://11691035, PR13140
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void foo(NSPointerArray* pointerArray) {
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void* p1 = malloc (1024);
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if (p1) {
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[pointerArray addPointer:p1];
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}
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void* p2 = malloc (1024);
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if (p2) {
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[pointerArray insertPointer:p2 atIndex:1];
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}
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void* p3 = malloc (1024);
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if (p3) {
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[pointerArray replacePointerAtIndex:1 withPointer:p3];
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}
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// Freeing the buffer is allowed.
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void* buffer = [pointerArray pointerAtIndex:0];
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free(buffer);
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}
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void noCrashOnVariableArgumentSelector() {
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NSMutableString *myString = [NSMutableString stringWithString:@"some text"];
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[myString appendFormat:@"some text = %d", 3];
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}
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void test12365078_check() {
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unichar *characters = (unichar*)malloc(12);
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string) free(characters); // no-warning
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}
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void test12365078_nocheck() {
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unichar *characters = (unichar*)malloc(12);
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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}
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void test12365078_false_negative() {
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unichar *characters = (unichar*)malloc(12);
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string) {;}
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}
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void test12365078_no_malloc(unichar *characters) {
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string) {free(characters);}
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}
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NSString *test12365078_no_malloc_returnValue(unichar *characters) {
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string) {
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return 0; // no-warning
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}
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return string;
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}
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void test12365078_nocheck_nomalloc(unichar *characters) {
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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free(characters); // expected-warning {{Attempt to free non-owned memory}}
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}
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void test12365078_nested(unichar *characters) {
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string) {
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NSString *string2 = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string2) {
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NSString *string3 = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string3) {
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NSString *string4 = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (!string4)
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free(characters);
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}
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}
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}
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}
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void test12365078_check_positive() {
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unichar *characters = (unichar*)malloc(12);
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:characters length:12 freeWhenDone:1];
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if (string) free(characters); // expected-warning{{Attempt to free non-owned memory}}
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}
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