forked from OSchip/llvm-project
90 lines
3.8 KiB
Objective-C
90 lines
3.8 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-check-objc-mem -analyzer-store=region -fblocks -verify %s
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// The following code is reduced using delta-debugging from Mac OS X headers:
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
typedef __builtin_va_list va_list;
|
|
typedef unsigned int uint32_t;
|
|
typedef struct dispatch_queue_s *dispatch_queue_t;
|
|
typedef struct dispatch_queue_attr_s *dispatch_queue_attr_t;
|
|
typedef void (^dispatch_block_t)(void);
|
|
void dispatch_async(dispatch_queue_t queue, dispatch_block_t block);
|
|
__attribute__((visibility("default"))) __attribute__((__malloc__)) __attribute__((__warn_unused_result__)) __attribute__((__nothrow__)) dispatch_queue_t dispatch_queue_create(const char *label, dispatch_queue_attr_t attr);
|
|
typedef long dispatch_once_t;
|
|
void dispatch_once(dispatch_once_t *predicate, dispatch_block_t block);
|
|
typedef signed char BOOL;
|
|
typedef unsigned long NSUInteger;
|
|
typedef struct _NSZone NSZone;
|
|
@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
|
|
@protocol NSObject
|
|
- (BOOL)isEqual:(id)object;
|
|
- (oneway void)release;
|
|
@end
|
|
@protocol NSCopying - (id)copyWithZone:(NSZone *)zone; @end
|
|
@protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; @end
|
|
@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end
|
|
@interface NSObject <NSObject> {}
|
|
+ (id)alloc;
|
|
@end
|
|
extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
|
|
@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length;
|
|
- ( const char *)UTF8String;
|
|
- (id)initWithFormat:(NSString *)format arguments:(va_list)argList __attribute__((format(__NSString__, 1, 0)));
|
|
@end
|
|
@class NSString, NSData;
|
|
typedef struct cssm_sample {} CSSM_SAMPLEGROUP, *CSSM_SAMPLEGROUP_PTR;
|
|
typedef struct __aslclient *aslclient;
|
|
typedef struct __aslmsg *aslmsg;
|
|
aslclient asl_open(const char *ident, const char *facility, uint32_t opts);
|
|
int asl_log(aslclient asl, aslmsg msg, int level, const char *format, ...) __attribute__((__format__ (__printf__, 4, 5)));
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Begin actual test cases.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// test1 - This test case exposed logic that caused the analyzer to crash because of a memory bug
|
|
// in BlockDataRegion. It represents real code that contains two block literals. Eventually
|
|
// via IPA 'logQueue' and 'client' should be updated after the call to 'dispatch_once'.
|
|
void test1(NSString *format, ...) {
|
|
static dispatch_queue_t logQueue;
|
|
static aslclient client;
|
|
static dispatch_once_t pred;
|
|
do {
|
|
if (__builtin_expect(*(&pred), ~0l) != ~0l)
|
|
dispatch_once(&pred, ^{
|
|
logQueue = dispatch_queue_create("com.mycompany.myproduct.asl", ((void*)0));
|
|
client = asl_open(((void*)0), "com.mycompany.myproduct", 0);
|
|
});
|
|
} while (0);
|
|
|
|
va_list args;
|
|
__builtin_va_start(args, format);
|
|
|
|
NSString *str = [[NSString alloc] initWithFormat:format arguments:args];
|
|
dispatch_async(logQueue, ^{ asl_log(client, ((void*)0), 4, "%s", [str UTF8String]); });
|
|
[str release];
|
|
|
|
__builtin_va_end(args);
|
|
}
|
|
|
|
// test2 - Test that captured variables that are uninitialized are flagged
|
|
// as such.
|
|
void test2() {
|
|
static int y = 0;
|
|
int x;
|
|
^{ y = x + 1; }(); // expected-warning{{Variable 'x' is captured by block with a garbage value}}
|
|
}
|
|
|
|
void test2_b() {
|
|
static int y = 0;
|
|
__block int x;
|
|
// This is also a bug, but should be found not by checking the value
|
|
// 'x' is bound at block creation.
|
|
^{ y = x + 1; }(); // no-warning
|
|
}
|
|
|
|
void test2_c() {
|
|
typedef void (^myblock)(void);
|
|
myblock f = ^() { f(); }; // expected-warning{{Variable 'f' is captured by block with a garbage value}}
|
|
} |