1 files changed, 51 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/tuple/48476.cc b/libstdc++-v3/testsuite/20_util/tuple/48476.cc
new file mode 100644
index 000000000..efe0007a6
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/tuple/48476.cc
@@ -0,0 +1,51 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2011 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 <tuple>
+#include <type_traits>
+#include <memory>
+#include <testsuite_hooks.h>
+
+template<typename T>
+  typename std::decay<T>::type copy(T&& x)
+  { return std::forward<T>(x); }
+
+// libstdc++/48476
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::shared_ptr<int> p(new int()), q, r;
+  
+  std::tuple<std::shared_ptr<int>&, int>  t0(p, 23), t1(q, 0);
+  t1 = copy(t0);  // shall be equivalent to
+                  // q = p; std::get<1>(t1) = std::get<1>(t0);
+  VERIFY( q == p ); 
+
+  std::tuple<std::shared_ptr<int>&, char> t2(r, 0);
+  t2 = copy(t1);  // shall be equivalent to
+                  // r = q; std::get<1>(t2) = std::get<1>(t1);
+  VERIFY( r == q );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}