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diff --git a/libstdc++-v3/testsuite/20_util/unique_ptr/assign/assign_neg.cc b/libstdc++-v3/testsuite/20_util/unique_ptr/assign/assign_neg.cc
new file mode 100644
index 00000000..af4641b2
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/unique_ptr/assign/assign_neg.cc
@@ -0,0 +1,58 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2008, 2009 Free Software Foundation
+//
+// 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
+// .
+
+#include
+
+struct base { virtual ~base() {} };
+struct derived : base {};
+
+void
+test01()
+{
+ std::unique_ptr p1(new derived);
+ std::unique_ptr p2(new derived);
+// p2 = p1; // should not compile
+ p2 = std::move(p1);
+ std::unique_ptr p3(new base);
+// p3 = p2; // should not compile
+ p3 = std::move(p2);
+}
+
+void
+test02()
+{
+ std::unique_ptr p1(new int(420));
+ std::unique_ptr p2 = p1;
+}
+
+void
+test03()
+{
+ std::unique_ptr p1(new int[3]);
+ std::unique_ptr p2 = p1;
+}
+
+// { dg-error "used here" "" { target *-*-* } 42 }
+// { dg-error "no matching" "" { target *-*-* } 48 }
+// { dg-error "used here" "" { target *-*-* } 49 }
+// { dg-error "candidates are" "" { target *-*-* } 214 }
+// { dg-error "deleted function" "" { target *-*-* } 214 }
+// { dg-error "deleted function" "" { target *-*-* } 360 }
+// { dg-excess-errors "note" }