import quincy beta 17.1.0

[ceph.git] / ceph / src / boost / libs / asio / test / properties / cpp03 / can_require_concept_not_applicable_free.cpp

diff --git a/ceph/src/boost/libs/asio/test/properties/cpp03/can_require_concept_not_applicable_free.cpp b/ceph/src/boost/libs/asio/test/properties/cpp03/can_require_concept_not_applicable_free.cpp
new file mode 100644 (file)
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--- /dev/null
+++ b/ceph/src/boost/libs/asio/test/properties/cpp03/can_require_concept_not_applicable_free.cpp
@@ -0,0 +1,50 @@
+//
+// cpp03/can_require_concept_not_applicable_free.cpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// 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/asio/require_concept.hpp>
+#include <cassert>
+
+template <int>
+struct prop
+{
+  static const bool is_requirable_concept = true;
+};
+
+template <int>
+struct object
+{
+  template <int N>
+  friend object<N> require_concept(const object&, prop<N>)
+  {
+    return object<N>();
+  }
+};
+
+namespace boost {
+namespace asio {
+namespace traits {
+
+template<int N, int M>
+struct require_concept_free<object<N>, prop<M> >
+{
+  static const bool is_valid = true;
+  static const bool is_noexcept = true;
+  typedef object<M> result_type;
+};
+
+} // namespace traits
+} // namespace asio
+} // namespace boost
+
+int main()
+{
+  assert((!boost::asio::can_require_concept<object<1>, prop<2> >::value));
+  assert((!boost::asio::can_require_concept<const object<1>, prop<2> >::value));
+}