+// { dg-do compile { target c++11 } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2018 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <future>
+
+// PR libstdc++/84532
+
+struct F
+{
+ template<typename T, typename U>
+ void operator()(T, U, int&)
+ {
+ using std::is_same;
+ using std::reference_wrapper;
+ static_assert(is_same<T, reference_wrapper<int>>::value, "");
+ static_assert(is_same<U, reference_wrapper<const int>>::value, "");
+ }
+};
+int i = 0;
+auto fut = std::async(F{}, std::ref(i), std::cref(i), std::ref(i));