1 files changed, 47 insertions, 0 deletions
diff --git a/libs/thread/test/sync/mutual_exclusion/locks/upgrade_lock/mod/non_member_swap_pass.cpp b/libs/thread/test/sync/mutual_exclusion/locks/upgrade_lock/mod/non_member_swap_pass.cpp
new file mode 100755
index 0000000000..b7983bef34
--- /dev/null
+++ b/libs/thread/test/sync/mutual_exclusion/locks/upgrade_lock/mod/non_member_swap_pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (C) 2011 Vicente J. Botet Escriba
+//
+//  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)
+
+// <boost/thread/locks.hpp>
+
+// template <class Mutex>
+//   void swap(upgrade_lock<Mutex>& x, upgrade_lock<Mutex>& y);
+
+#include <boost/thread/locks.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+struct shared_mutex
+{
+  void lock_upgrade()
+  {
+  }
+  void unlock_upgrade()
+  {
+  }
+};
+
+shared_mutex m;
+
+int main()
+{
+  boost::upgrade_lock<shared_mutex> lk1(m);
+  boost::upgrade_lock<shared_mutex> lk2;
+  swap(lk1, lk2);
+  BOOST_TEST(lk1.mutex() == 0);
+  BOOST_TEST(lk1.owns_lock() == false);
+  BOOST_TEST(lk2.mutex() == &m);
+  BOOST_TEST(lk2.owns_lock() == true);
+
+  return boost::report_errors();
+}
+