1 files changed, 51 insertions, 0 deletions
diff --git a/libcxx/test/std/utilities/function.objects/bitwise.operations/transparent.pass.cpp b/libcxx/test/std/utilities/function.objects/bitwise.operations/transparent.pass.cpp
new file mode 100644
index 00000000000..9f8e15dd55f
--- /dev/null
+++ b/libcxx/test/std/utilities/function.objects/bitwise.operations/transparent.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+#include <functional>
+#include <string>
+
+template <class _Tp>
+struct is_transparent
+{
+private:
+    struct __two {char __lx; char __lxx;};
+    template <class _Up> static __two __test(...);
+    template <class _Up> static char __test(typename _Up::is_transparent* = 0);
+public:
+    static const bool value = sizeof(__test<_Tp>(0)) == 1;
+};
+
+
+int main () {
+#if _LIBCPP_STD_VER > 11
+
+    static_assert ( !is_transparent<std::bit_and<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_and<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_and<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_and<>>::value, "" );
+
+    static_assert ( !is_transparent<std::bit_or<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_or<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_or<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_or<>>::value, "" );
+
+    static_assert ( !is_transparent<std::bit_xor<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_xor<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_xor<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_xor<>>::value, "" );
+
+    static_assert ( !is_transparent<std::bit_not<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_not<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_not<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_not<>>::value, "" );
+    
+#endif
+
+    return 0;
+    }