1 files changed, 23 insertions, 0 deletions
diff --git a/libcxx/test/std/thread/macro.pass.cpp b/libcxx/test/std/thread/macro.pass.cpp
new file mode 100644
index 00000000000..c1b1377d6cc
--- /dev/null
+++ b/libcxx/test/std/thread/macro.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: libcpp-has-no-threads
+
+// <thread>
+
+// #define __STDCPP_THREADS__ __cplusplus
+
+#include <thread>
+
+int main()
+{
+#ifndef __STDCPP_THREADS__
+#error __STDCPP_THREADS__ is not defined
+#endif
+}