1 files changed, 35 insertions, 0 deletions
diff --git a/test/tsan/libdispatch/source-registration.c b/test/tsan/libdispatch/source-registration.c
new file mode 100644
index 000000000..296c0055b
--- /dev/null
+++ b/test/tsan/libdispatch/source-registration.c
@@ -0,0 +1,35 @@
+// RUN: %clang_tsan %s -o %t
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#include "dispatch/dispatch.h"
+
+#include <stdio.h>
+
+long global;
+
+int main(int argc, const char *argv[]) {
+  dispatch_semaphore_t done = dispatch_semaphore_create(0);
+
+  dispatch_queue_t queue =
+      dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
+
+  dispatch_source_t source =
+      dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGHUP, 0, queue);
+
+  global = 42;
+
+  dispatch_source_set_registration_handler(source, ^{
+    fprintf(stderr, "global = %ld\n", global);
+
+    dispatch_semaphore_signal(done);
+  });
+
+  dispatch_resume(source);
+
+  dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
+
+  return 0;
+}
+
+// CHECK: global = 42
+// CHECK-NOT: WARNING: ThreadSanitizer