1 files changed, 42 insertions, 0 deletions
diff --git a/test/tsan/libdispatch/after.c b/test/tsan/libdispatch/after.c
new file mode 100644
index 000000000..59281e76d
--- /dev/null
+++ b/test/tsan/libdispatch/after.c
@@ -0,0 +1,42 @@
+// RUN: %clang_tsan %s -o %t
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#include "dispatch/dispatch.h"
+
+#include <stdio.h>
+
+long my_global;
+long my_global2;
+dispatch_semaphore_t done;
+
+void callback(void *context) {
+  my_global2 = 42;
+
+  dispatch_semaphore_signal(done);
+}
+
+int main(int argc, const char *argv[]) {
+  fprintf(stderr, "start\n");
+  done = dispatch_semaphore_create(0);
+
+  dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+
+  my_global = 10;
+  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_MSEC)), q, ^{
+    my_global = 42;
+
+    dispatch_semaphore_signal(done);
+  });
+
+  my_global2 = 10;
+  dispatch_after_f(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_MSEC)), q, NULL, &callback);
+
+  dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
+  dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
+  fprintf(stderr, "done\n");
+  return 0;
+}
+
+// CHECK: start
+// CHECK: done
+// CHECK-NOT: WARNING: ThreadSanitizer