diff options
Diffstat (limited to 'test')
-rw-r--r-- | test/tsan/Darwin/objc-synchronize-tagged.mm | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/test/tsan/Darwin/objc-synchronize-tagged.mm b/test/tsan/Darwin/objc-synchronize-tagged.mm new file mode 100644 index 000000000..ab0af46ec --- /dev/null +++ b/test/tsan/Darwin/objc-synchronize-tagged.mm @@ -0,0 +1,62 @@ +// RUN: %clangxx_tsan %s -o %t -framework Foundation -fobjc-arc %darwin_min_target_with_full_runtime_arc_support +// RUN: %run %t 2>&1 | FileCheck %s + +#import <Foundation/Foundation.h> + +NSString *tagged_string = nil; + +@interface MyClass : NSObject { + long field; +} +@property(nonatomic, readonly) long value; +@end + +dispatch_group_t group; + +@implementation MyClass + +- (void)start { + dispatch_queue_t q = dispatch_queue_create(NULL, NULL); + dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ + for (int i = 0; i < 10; i++) { + dispatch_async(q, ^{ + @synchronized(tagged_string) { + self->field = i; + } + }); + } + }); +} + +- (long)value { + @synchronized(tagged_string) { + return self->field; + } +} + +- (void)dealloc { + dispatch_group_leave(group); +} + +@end + +int main() { + tagged_string = [NSString stringWithFormat:@"%s", "abc"]; + uintptr_t tagged_string_bits = (uintptr_t)tagged_string; + assert((tagged_string_bits & 0x8000000000000001ull) != 0); + group = dispatch_group_create(); + @autoreleasepool { + for (int j = 0; j < 100; ++j) { + dispatch_group_enter(group); + MyClass *obj = [[MyClass alloc] init]; + [obj start]; + long x = obj.value; + (void)x; + } + } + dispatch_group_wait(group, DISPATCH_TIME_FOREVER); + NSLog(@"Hello world"); +} + +// CHECK: Hello world +// CHECK-NOT: WARNING: ThreadSanitizer |