--- /dev/null
+// Copyright (c) 2018-2020 Emil Dotchevski and Reverge Studios, Inc.
+
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/leaf/handle_errors.hpp>
+
+namespace leaf = boost::leaf;
+
+leaf::diagnostic_info f();
+leaf::diagnostic_info a = f();
+leaf::diagnostic_info b = a;