1 files changed, 26 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/integral_constant/tag.cpp b/src/boost/libs/hana/test/integral_constant/tag.cpp
new file mode 100644
index 000000000..35b420201
--- /dev/null
+++ b/src/boost/libs/hana/test/integral_constant/tag.cpp
@@ -0,0 +1,26 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/core/tag_of.hpp>
+#include <boost/hana/ext/std/integral_constant.hpp>
+#include <boost/hana/integral_constant.hpp>
+
+#include <type_traits>
+namespace hana = boost::hana;
+
+
+// Make sure we have the right tag, even when including ext/std/integral_constant.hpp
+static_assert(std::is_same<
+    hana::tag_of_t<hana::integral_constant<int, 10>>,
+    hana::integral_constant_tag<int>
+>{}, "");
+
+struct derived : hana::integral_constant<int, 10> { };
+static_assert(std::is_same<
+    hana::tag_of_t<derived>,
+    hana::integral_constant_tag<int>
+>{}, "");
+
+
+int main() { }