Add <optional> header.
This patch is largely thanks to Casey Carter @ Microsoft. He did the initial
work of porting our experimental implementation and tests over to namespace
std.
llvm-svn: 283977
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 6ee4001cc957acac39181b68193e1414c3163698
diff --git a/src/optional.cpp b/src/optional.cpp
index 8c5dd76..f2fbfdf 100644
--- a/src/optional.cpp
+++ b/src/optional.cpp
@@ -7,18 +7,18 @@
//
//===----------------------------------------------------------------------===//
+#include "optional"
#include "experimental/optional"
-_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL
-
-#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
-
-bad_optional_access::~bad_optional_access() _NOEXCEPT {}
-
-#else
+namespace std
+{
bad_optional_access::~bad_optional_access() _NOEXCEPT = default;
-#endif
+} // std
+
+_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL
+
+bad_optional_access::~bad_optional_access() _NOEXCEPT = default;
_LIBCPP_END_NAMESPACE_EXPERIMENTAL