1 files changed, 7 insertions, 2 deletions
diff --git a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.pass.cpp b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.pass.cpp
index 46fd35ad4dd..c5b650d79a1 100644
--- a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.pass.cpp
+++ b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.pass.cpp
@@ -10,7 +10,7 @@
 
 // template <class... Types> class tuple;
 
-// constexpr tuple();
+// explicit(see-below) constexpr tuple();
 
 // UNSUPPORTED: c++98, c++03
 
@@ -107,6 +107,11 @@ int main(int, char**)
         IllFormedDefault v(0);
         std::tuple<IllFormedDefault> t(v);
     }
+    {
+        struct Base { };
+        struct Derived : Base { protected: Derived() = default; };
+        static_assert(!std::is_default_constructible<std::tuple<Derived, int> >::value, "");
+    }
 
-  return 0;
+    return 0;
 }