1 files changed, 28 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/tls_race2.cc b/lib/tsan/lit_tests/tls_race2.cc
new file mode 100644
index 000000000000..110abaa6a9df
--- /dev/null
+++ b/lib/tsan/lit_tests/tls_race2.cc
@@ -0,0 +1,28 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stddef.h>
+#include <unistd.h>
+
+void *Thread2(void *a) {
+  *(int*)a = 43;
+  return 0;
+}
+
+void *Thread(void *a) {
+  static __thread int Var = 42;
+  pthread_t t;
+  pthread_create(&t, 0, Thread2, &Var);
+  Var = 42;
+  pthread_join(t, 0);
+  return 0;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  pthread_join(t, 0);
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK:   Location is TLS of thread T1.
+