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// RUN: %clang_tsan %s -o %t -framework Foundation
// RUN: %run %t 2>&1 | FileCheck %s
#import <Foundation/Foundation.h>
long global;
int main(int argc, const char *argv[]) {
dispatch_queue_t queue =
dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
dispatch_source_t source =
dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
dispatch_source_set_timer(source, dispatch_walltime(NULL, 0), 1e9, 5);
global = 42;
dispatch_source_set_cancel_handler(source, ^{
fprintf(stderr, "global = %ld\n", global);
dispatch_sync(dispatch_get_main_queue(), ^{
CFRunLoopStop(CFRunLoopGetCurrent());
});
});
dispatch_resume(source);
dispatch_cancel(source);
CFRunLoopRun();
return 0;
}
// CHECK: global = 42
// CHECK-NOT: WARNING: ThreadSanitizer
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