1 files changed, 28 insertions, 0 deletions
diff --git a/test/std/experimental/optional/optional.syn/optional_const_in_place_t.fail.cpp b/test/std/experimental/optional/optional.syn/optional_const_in_place_t.fail.cpp
new file mode 100644
index 000000000000..60836ae2396e
--- /dev/null
+++ b/test/std/experimental/optional/optional.syn/optional_const_in_place_t.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <optional>
+
+// A program that necessitates the instantiation of template optional for
+// (possibly cv-qualified) in_place_t is ill-formed.
+
+#include <experimental/optional>
+
+int main()
+{
+#if _LIBCPP_STD_VER > 11
+    using std::experimental::optional;
+    using std::experimental::in_place_t;
+    using std::experimental::in_place;
+
+    optional<const in_place_t> opt;
+#else
+#error
+#endif  // _LIBCPP_STD_VER > 11
+}