1 files changed, 37 insertions, 0 deletions
diff --git a/test/tsan/Darwin/gcd-source-event2.mm b/test/tsan/Darwin/gcd-source-event2.mm
new file mode 100644
index 000000000000..c45d481a0028
--- /dev/null
+++ b/test/tsan/Darwin/gcd-source-event2.mm
@@ -0,0 +1,37 @@
+// RUN: %clang_tsan %s -o %t -framework Foundation
+// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s
+
+#import <Foundation/Foundation.h>
+
+long global;
+
+void handler(void *arg) {
+  fprintf(stderr, "global = %ld\n", global);
+
+  dispatch_sync(dispatch_get_main_queue(), ^{
+    CFRunLoopStop(CFRunLoopGetCurrent());
+  });
+}
+
+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_event_handler_f(source, &handler);
+
+  dispatch_resume(source);
+
+  CFRunLoopRun();
+
+  return 0;
+}
+
+// CHECK: global = 42
+// CHECK-NOT: WARNING: ThreadSanitizer