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-rw-r--r--clang/test/Analysis/blocks.m90
1 files changed, 90 insertions, 0 deletions
diff --git a/clang/test/Analysis/blocks.m b/clang/test/Analysis/blocks.m
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+++ b/clang/test/Analysis/blocks.m
@@ -0,0 +1,90 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core -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 uninitialized when captured by block}}
+}
+
+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 uninitialized when captured by block}}
+} \ No newline at end of file