1 files changed, 46 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/unique_ptr/assign/91308.cc b/libstdc++-v3/testsuite/20_util/unique_ptr/assign/91308.cc
new file mode 100644
index 00000000000..6500ea43f02
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/unique_ptr/assign/91308.cc
@@ -0,0 +1,46 @@
+// Copyright (C) 2019 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/>.
+
+// { dg-do compile { target c++11 } }
+
+#include <memory>
+
+struct D1
+{
+  void operator()(int* p) const noexcept { }
+};
+
+struct D2 : D1
+{
+  D2& operator=(D1&&) noexcept { return *this; }
+};
+
+void
+test01()
+{
+  std::unique_ptr<int, D1> d1;
+  std::unique_ptr<int, D2> d2;
+  d2 = std::move(d1);
+}
+
+void
+test02()
+{
+  std::unique_ptr<int[], D1> d1;
+  std::unique_ptr<int[], D2> d2;
+  d2 = std::move(d1);
+}