1 files changed, 58 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/30_threads/lock/2.cc b/libstdc++-v3/testsuite/30_threads/lock/2.cc
new file mode 100644
index 000000000..bf3c8a86a
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/lock/2.cc
@@ -0,0 +1,58 @@
+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2010 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 <mutex>
+#include <thread>
+#include <testsuite_hooks.h>
+
+void locker(std::mutex& m1, std::mutex& m2, std::mutex& m3)
+{
+  bool test __attribute__((unused)) = true;
+
+  typedef std::unique_lock<std::mutex> lock_type;
+
+  lock_type l1(m1, std::defer_lock);
+  lock_type l2(m2, std::defer_lock);
+  lock_type l3(m3, std::defer_lock);
+  std::lock(l1, l2, l3);
+  VERIFY( l1.owns_lock() );
+  VERIFY( l2.owns_lock() );
+  VERIFY( l3.owns_lock() );
+}
+
+void test01()
+{
+  std::mutex m1, m2, m3;
+  std::thread t1(locker, std::ref(m1), std::ref(m2), std::ref(m3));
+  std::thread t2(locker, std::ref(m3), std::ref(m2), std::ref(m1));
+  t1.join();
+  t2.join();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}