--- /dev/null
+// Copyright (C) 2005, 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
+// <http://www.gnu.org/licenses/>.
+
+// TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared]
+
+#include <tr1/memory>
+#include <testsuite_hooks.h>
+
+struct A
+{
+ A() { ++ctor_count; }
+ virtual ~A() { ++dtor_count; }
+ static long ctor_count;
+ static long dtor_count;
+};
+long A::ctor_count = 0;
+long A::dtor_count = 0;
+
+struct B : A
+{
+ B() { ++ctor_count; }
+ virtual ~B() { ++dtor_count; }
+ static long ctor_count;
+ static long dtor_count;
+};
+long B::ctor_count = 0;
+long B::dtor_count = 0;
+
+
+struct reset_count_struct
+{
+ ~reset_count_struct()
+ {
+ A::ctor_count = 0;
+ A::dtor_count = 0;
+ B::ctor_count = 0;
+ B::dtor_count = 0;
+ }
+};
+
+
+// 2.2.3.3 shared_ptr assignment [tr.util.smartptr.shared.assign]
+
+// Assignment from shared_ptr<Y>
+void
+test01()
+{
+ reset_count_struct __attribute__((unused)) reset;
+ bool test __attribute__((unused)) = true;
+
+ std::tr1::shared_ptr<A> a;
+
+ a = std::tr1::shared_ptr<A>();
+ VERIFY( a.get() == 0 );
+ VERIFY( A::ctor_count == 0 );
+ VERIFY( A::dtor_count == 0 );
+ VERIFY( B::ctor_count == 0 );
+ VERIFY( B::dtor_count == 0 );
+
+ a = std::tr1::shared_ptr<A>(new A);
+ VERIFY( a.get() != 0 );
+ VERIFY( A::ctor_count == 1 );
+ VERIFY( A::dtor_count == 0 );
+ VERIFY( B::ctor_count == 0 );
+ VERIFY( B::dtor_count == 0 );
+
+ a = std::tr1::shared_ptr<B>(new B);
+ VERIFY( a.get() != 0 );
+ VERIFY( A::ctor_count == 2 );
+ VERIFY( A::dtor_count == 1 );
+ VERIFY( B::ctor_count == 1 );
+ VERIFY( B::dtor_count == 0 );
+}
+
+int
+main()
+{
+ test01();
+ return 0;
+}