1 files changed, 49 insertions, 0 deletions
diff --git a/test/std/experimental/optional/optional.object/optional.object.observe/dereference.pass.cpp b/test/std/experimental/optional/optional.object/optional.object.observe/dereference.pass.cpp
new file mode 100644
index 000000000000..98e5dac9719e
--- /dev/null
+++ b/test/std/experimental/optional/optional.object/optional.object.observe/dereference.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// T& optional<T>::operator*();
+
+#ifdef _LIBCPP_DEBUG
+#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
+#endif
+
+#include <experimental/optional>
+#include <type_traits>
+#include <cassert>
+
+#if _LIBCPP_STD_VER > 11
+
+using std::experimental::optional;
+
+struct X
+{
+    constexpr int test() const {return 3;}
+    int test() {return 4;}
+};
+
+#endif  // _LIBCPP_STD_VER > 11
+
+int main()
+{
+#if _LIBCPP_STD_VER > 11
+    {
+        optional<X> opt(X{});
+        assert((*opt).test() == 4);
+    }
+#ifdef _LIBCPP_DEBUG
+    {
+        optional<X> opt;
+        assert((*opt).test() == 3);
+        assert(false);
+    }
+#endif  // _LIBCPP_DEBUG
+#endif  // _LIBCPP_STD_VER > 11
+}