From 61b9a7258a7693d7f3674a5a1daf7b036ff1d382 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 6 Sep 2015 18:46:46 +0000
Subject: Import libc++ 3.7.0 release (r246257).

---
 .../optional.object.observe/value.pass.cpp         | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp

(limited to 'test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp')

diff --git a/test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp b/test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp
new file mode 100644
index 0000000000000..e91805e9c8e5f
--- /dev/null
+++ b/test/std/experimental/optional/optional.object/optional.object.observe/value.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>::value();
+
+#include <experimental/optional>
+#include <type_traits>
+#include <cassert>
+
+#if _LIBCPP_STD_VER > 11
+
+using std::experimental::optional;
+using std::experimental::bad_optional_access;
+
+struct X
+{
+    X() = default;
+    X(const X&) = delete;
+    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;
+        opt.emplace();
+        assert(opt.value().test() == 4);
+    }
+    {
+        optional<X> opt;
+        try
+        {
+            opt.value();
+            assert(false);
+        }
+        catch (const bad_optional_access&)
+        {
+        }
+    }
+#endif  // _LIBCPP_STD_VER > 11
+}
-- 
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