Add all the relational operators to std::experimental::optional. Also update bad_optional_access to match the Library Fundamentals draft standard. This is not all of the upcoming changes to optional, though.
llvm-svn: 223775
diff --git a/libcxx/test/utilities/optional/optional.nullops/equal.pass.cpp b/libcxx/test/utilities/optional/optional.nullops/equal.pass.cpp
new file mode 100644
index 0000000..931db61
--- /dev/null
+++ b/libcxx/test/utilities/optional/optional.nullops/equal.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// 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>
+
+// template <class T> constexpr bool operator==(const optional<T>& x, nullopt_t) noexcept;
+// template <class T> constexpr bool operator==(nullopt_t, const optional<T>& x) noexcept;
+
+#include <experimental/optional>
+
+int main()
+{
+#if _LIBCPP_STD_VER > 11
+ using std::experimental::optional;
+ using std::experimental::nullopt_t;
+ using std::experimental::nullopt;
+
+ {
+ typedef int T;
+ typedef optional<T> O;
+
+ constexpr O o1; // disengaged
+ constexpr O o2{1}; // engaged
+
+ static_assert ( (nullopt == o1), "" );
+ static_assert ( !(nullopt == o2), "" );
+ static_assert ( (o1 == nullopt), "" );
+ static_assert ( !(o2 == nullopt), "" );
+
+ static_assert (noexcept(nullopt == o1), "");
+ static_assert (noexcept(o1 == nullopt), "");
+ }
+#endif
+}