1 files changed, 34 insertions, 0 deletions
diff --git a/compiler-rt/test/tsan/tls_race2.cpp b/compiler-rt/test/tsan/tls_race2.cpp
new file mode 100644
index 00000000000..5968e66d5b1
--- /dev/null
+++ b/compiler-rt/test/tsan/tls_race2.cpp
@@ -0,0 +1,34 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
+#include "test.h"
+
+void *Thread2(void *a) {
+  barrier_wait(&barrier);
+  *(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;
+  barrier_wait(&barrier);
+  pthread_join(t, 0);
+  return 0;
+}
+
+int main() {
+  barrier_init(&barrier, 2);
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  pthread_join(t, 0);
+  fprintf(stderr, "DONE\n");
+  return 0;
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK-Linux:   Location is TLS of thread T1.
+// CHECK-FreeBSD:   Location is TLS of thread T1.
+// CHECK-NetBSD:   Location is TLS of thread T1.
+// CHECK-Darwin:   Location is heap block of size 4
+// CHECK: DONE