1 files changed, 19 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/atomic_free.cc b/lib/tsan/lit_tests/atomic_free.cc
new file mode 100644
index 000000000000..ba9bd5ac4aed
--- /dev/null
+++ b/lib/tsan/lit_tests/atomic_free.cc
@@ -0,0 +1,19 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <unistd.h>
+
+void *Thread(void *a) {
+  __atomic_fetch_add((int*)a, 1, __ATOMIC_SEQ_CST);
+  return 0;
+}
+
+int main() {
+  int *a = new int(0);
+  pthread_t t;
+  pthread_create(&t, 0, Thread, a);
+  sleep(1);
+  delete a;
+  pthread_join(t, 0);
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race