1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core -analyzer-store=region -fblocks -verify %s
3 //===----------------------------------------------------------------------===//
4 // The following code is reduced using delta-debugging from Mac OS X headers:
5 //===----------------------------------------------------------------------===//
7 typedef __builtin_va_list va_list;
8 typedef unsigned int uint32_t;
9 typedef struct dispatch_queue_s *dispatch_queue_t;
10 typedef struct dispatch_queue_attr_s *dispatch_queue_attr_t;
11 typedef void (^dispatch_block_t)(void);
12 void dispatch_async(dispatch_queue_t queue, dispatch_block_t block);
13 __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);
14 typedef long dispatch_once_t;
15 void dispatch_once(dispatch_once_t *predicate, dispatch_block_t block);
16 typedef signed char BOOL;
17 typedef unsigned long NSUInteger;
18 typedef struct _NSZone NSZone;
19 @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
21 - (BOOL)isEqual:(id)object;
22 - (oneway void)release;
24 @protocol NSCopying - (id)copyWithZone:(NSZone *)zone; @end
25 @protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone; @end
26 @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end
27 @interface NSObject <NSObject> {}
30 extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
31 @interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding> - (NSUInteger)length;
32 - ( const char *)UTF8String;
33 - (id)initWithFormat:(NSString *)format arguments:(va_list)argList __attribute__((format(__NSString__, 1, 0)));
35 @class NSString, NSData;
36 typedef struct cssm_sample {} CSSM_SAMPLEGROUP, *CSSM_SAMPLEGROUP_PTR;
37 typedef struct __aslclient *aslclient;
38 typedef struct __aslmsg *aslmsg;
39 aslclient asl_open(const char *ident, const char *facility, uint32_t opts);
40 int asl_log(aslclient asl, aslmsg msg, int level, const char *format, ...) __attribute__((__format__ (__printf__, 4, 5)));
42 //===----------------------------------------------------------------------===//
43 // Begin actual test cases.
44 //===----------------------------------------------------------------------===//
46 // test1 - This test case exposed logic that caused the analyzer to crash because of a memory bug
47 // in BlockDataRegion. It represents real code that contains two block literals. Eventually
48 // via IPA 'logQueue' and 'client' should be updated after the call to 'dispatch_once'.
49 void test1(NSString *format, ...) {
50 static dispatch_queue_t logQueue;
51 static aslclient client;
52 static dispatch_once_t pred;
54 if (__builtin_expect(*(&pred), ~0l) != ~0l)
55 dispatch_once(&pred, ^{
56 logQueue = dispatch_queue_create("com.mycompany.myproduct.asl", ((void*)0));
57 client = asl_open(((void*)0), "com.mycompany.myproduct", 0);
62 __builtin_va_start(args, format);
64 NSString *str = [[NSString alloc] initWithFormat:format arguments:args];
65 dispatch_async(logQueue, ^{ asl_log(client, ((void*)0), 4, "%s", [str UTF8String]); });
68 __builtin_va_end(args);
71 // test2 - Test that captured variables that are uninitialized are flagged
76 ^{ y = x + 1; }(); // expected-warning{{Variable 'x' is uninitialized when captured by block}}
82 ^{ y = x + 1; }(); // expected-warning {{left operand of '+' is a garbage value}}
86 typedef void (^myblock)(void);
87 myblock f = ^() { f(); }; // expected-warning{{Variable 'f' is uninitialized when captured by block}}