diff --git a/include/boost/smart_ptr/detail/local_counted_base.hpp b/include/boost/smart_ptr/detail/local_counted_base.hpp
index 20ba3c2..85bfd52 100644
--- a/include/boost/smart_ptr/detail/local_counted_base.hpp
+++ b/include/boost/smart_ptr/detail/local_counted_base.hpp
@@ -57,6 +57,8 @@ public:
 
     virtual void destroy() BOOST_SP_NOEXCEPT = 0;
 
+    virtual boost::shared_ptr<void> get_shared_ptr() const BOOST_SP_NOEXCEPT = 0;
+
     void add_ref() BOOST_SP_NOEXCEPT
     {
 #if defined( __has_builtin )
@@ -114,6 +116,11 @@ public:
     {
         delete this;
     }
+
+    virtual boost::shared_ptr<void> get_shared_ptr() const BOOST_SP_NOEXCEPT
+    {
+        return const_pointer_cast<void>( pn_ );
+    }
 };
 
 class local_counted_impl_em: public local_counted_base
@@ -126,6 +133,11 @@ public:
     {
         pn_.reset();
     }
+
+    virtual boost::shared_ptr<void> get_shared_ptr() const BOOST_SP_NOEXCEPT
+    {
+        return const_pointer_cast<void>( pn_ );
+    }
 };
 
 } // namespace detail
diff --git a/include/boost/smart_ptr/local_shared_ptr.hpp b/include/boost/smart_ptr/local_shared_ptr.hpp
index b2566b5..9ca464b 100644
--- a/include/boost/smart_ptr/local_shared_ptr.hpp
+++ b/include/boost/smart_ptr/local_shared_ptr.hpp
@@ -437,6 +437,36 @@ public:
         return pn? pn->local_use_count(): 0;
     }
 
+    // conversions to shared_ptr, weak_ptr
+
+    template<class Y> operator shared_ptr<Y>() const BOOST_SP_NOEXCEPT
+    {
+        boost::detail::sp_assert_convertible<T, Y>();
+
+        if( pn )
+        {
+            return static_pointer_cast<Y>( pn->get_shared_ptr() );
+        }
+        else
+        {
+            return shared_ptr<Y>();
+        }
+    }
+
+    template<class Y> operator weak_ptr<Y>() const BOOST_SP_NOEXCEPT
+    {
+        boost::detail::sp_assert_convertible<T, Y>();
+
+        if( pn )
+        {
+            return static_pointer_cast<Y>( pn->get_shared_ptr() );
+        }
+        else
+        {
+            return weak_ptr<Y>();
+        }
+    }
+
     // swap
 
     void swap( local_shared_ptr & r ) BOOST_SP_NOEXCEPT
@@ -487,6 +517,31 @@ template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, local_sha
 
 #endif
 
+template<class T, class U> inline bool operator==( local_shared_ptr<T> const & a, shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
+{
+    return a.get() == b.get();
+}
+
+template<class T, class U> inline bool operator!=( local_shared_ptr<T> const & a, shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
+{
+    return a.get() != b.get();
+}
+
+template<class T, class U> inline bool operator==( shared_ptr<T> const & a, local_shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
+{
+    return a.get() == b.get();
+}
+
+template<class T, class U> inline bool operator!=( shared_ptr<T> const & a, local_shared_ptr<U> const & b ) BOOST_SP_NOEXCEPT
+{
+    return a.get() != b.get();
+}
+
+template<class T, class U> inline bool operator<(local_shared_ptr<T> const & a, local_shared_ptr<U> const & b) BOOST_SP_NOEXCEPT
+{
+    return a.owner_before( b );
+}
+
 template<class T> inline void swap( local_shared_ptr<T> & a, local_shared_ptr<T> & b ) BOOST_SP_NOEXCEPT
 {
     a.swap( b );
diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index f5b69b9..9235970 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -212,5 +212,9 @@ import testing ;
           [ compile lwm_win32_cs_test.cpp ]
 
           [ run local_sp_test.cpp ]
+          [ run lsp_array_test.cpp ]
+          [ run lsp_array_n_test.cpp ]
+          [ run lsp_array_cv_test.cpp ]
+          [ run lsp_array_cast_test.cpp ]
         ;
 }
diff --git a/test/lsp_array_cast_test.cpp b/test/lsp_array_cast_test.cpp
new file mode 100644
index 0000000..183cddc
--- /dev/null
+++ b/test/lsp_array_cast_test.cpp
@@ -0,0 +1,202 @@
+//
+// lsp_array_cast_test.cpp
+//
+// Copyright 2012, 2017 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/smart_ptr/local_shared_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+struct X
+{
+};
+
+void static_cast_test()
+{
+    {
+        boost::local_shared_ptr<void> pv;
+
+        boost::local_shared_ptr<int[]> pi = boost::static_pointer_cast<int[]>( pv );
+        BOOST_TEST( pi.get() == 0 );
+
+        boost::local_shared_ptr<int[3]> pi2 = boost::static_pointer_cast<int[3]>( pv );
+        BOOST_TEST( pi2.get() == 0 );
+
+        boost::local_shared_ptr<X[]> px = boost::static_pointer_cast<X[]>( pv );
+        BOOST_TEST( px.get() == 0 );
+
+        boost::local_shared_ptr<X[5]> px2 = boost::static_pointer_cast<X[5]>( pv );
+        BOOST_TEST( px2.get() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<int[]> pi( new int[2] );
+        boost::local_shared_ptr<void> pv( pi );
+
+        boost::local_shared_ptr<int[]> pi2 = boost::static_pointer_cast<int[]>( pv );
+        BOOST_TEST(pi.get() == pi2.get());
+        BOOST_TEST(!(pi < pi2 || pi2 < pi));
+
+        boost::local_shared_ptr<int[2]> pi3 = boost::static_pointer_cast<int[2]>( pv );
+        BOOST_TEST(pi.get() == pi3.get());
+        BOOST_TEST(!(pi < pi3 || pi3 < pi));
+
+        boost::local_shared_ptr<void> pv2( pi3 );
+
+        boost::local_shared_ptr<int[]> pi4 = boost::static_pointer_cast<int[]>( pv2 );
+        BOOST_TEST(pi.get() == pi4.get());
+        BOOST_TEST(!(pi < pi4 || pi4 < pi));
+    }
+
+    {
+        boost::local_shared_ptr<X[]> px( new X[4] );
+        boost::local_shared_ptr<void> pv( px );
+
+        boost::local_shared_ptr<X[]> px2 = boost::static_pointer_cast<X[]>( pv );
+        BOOST_TEST(px.get() == px2.get());
+        BOOST_TEST(!(px < px2 || px2 < px));
+
+        boost::local_shared_ptr<X[4]> px3 = boost::static_pointer_cast<X[4]>( pv );
+        BOOST_TEST(px.get() == px3.get());
+        BOOST_TEST(!(px < px3 || px3 < px));
+
+        boost::local_shared_ptr<void> pv2( px3 );
+
+        boost::local_shared_ptr<X[]> px4 = boost::static_pointer_cast<X[]>( pv2 );
+        BOOST_TEST(px.get() == px4.get());
+        BOOST_TEST(!(px < px4 || px4 < px));
+    }
+}
+
+void const_cast_test()
+{
+    {
+        boost::local_shared_ptr<int const volatile[]> px;
+
+        boost::local_shared_ptr<int[]> px2 = boost::const_pointer_cast<int[]>(px);
+        BOOST_TEST( px2.get() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<int const volatile[2]> px;
+
+        boost::local_shared_ptr<int[2]> px2 = boost::const_pointer_cast<int[2]>(px);
+        BOOST_TEST( px2.get() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<X const volatile[]> px;
+
+        boost::local_shared_ptr<X[]> px2 = boost::const_pointer_cast<X[]>(px);
+        BOOST_TEST( px2.get() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<X const volatile[5]> px;
+
+        boost::local_shared_ptr<X[5]> px2 = boost::const_pointer_cast<X[5]>(px);
+        BOOST_TEST( px2.get() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<int const volatile[]> px( new int[3] );
+
+        boost::local_shared_ptr<int[]> px2 = boost::const_pointer_cast<int[]>(px);
+        BOOST_TEST(px.get() == px2.get());
+        BOOST_TEST(!(px < px2 || px2 < px));
+    }
+
+    {
+        boost::local_shared_ptr<int const volatile[3]> px( new int[3] );
+
+        boost::local_shared_ptr<int[3]> px2 = boost::const_pointer_cast<int[3]>(px);
+        BOOST_TEST(px.get() == px2.get());
+        BOOST_TEST(!(px < px2 || px2 < px));
+    }
+
+    {
+        boost::local_shared_ptr<X const volatile[]> px( new X[4] );
+
+        boost::local_shared_ptr<X[]> px2 = boost::const_pointer_cast<X[]>(px);
+        BOOST_TEST(px.get() == px2.get());
+        BOOST_TEST(!(px < px2 || px2 < px));
+    }
+
+    {
+        boost::local_shared_ptr<X const volatile[4]> px( new X[4] );
+
+        boost::local_shared_ptr<X[4]> px2 = boost::const_pointer_cast<X[4]>(px);
+        BOOST_TEST(px.get() == px2.get());
+        BOOST_TEST(!(px < px2 || px2 < px));
+    }
+}
+
+void reinterpret_cast_test()
+{
+    {
+        boost::local_shared_ptr<int[]> pi;
+        BOOST_TEST( pi.get() == 0 );
+
+        boost::local_shared_ptr<int[3]> pi2 = boost::reinterpret_pointer_cast<int[3]>( pi );
+        BOOST_TEST( pi2.get() == 0 );
+
+        boost::local_shared_ptr<int[6]> pi3 = boost::reinterpret_pointer_cast<int[6]>( pi2 );
+        BOOST_TEST( pi3.get() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<X[]> px;
+        BOOST_TEST( px.get() == 0 );
+
+        boost::local_shared_ptr<X[5]> px2 = boost::reinterpret_pointer_cast<X[5]>( px );
+        BOOST_TEST( px2.get() == 0 );
+
+        boost::local_shared_ptr<X[9]> px3 = boost::reinterpret_pointer_cast<X[9]>( px2 );
+        BOOST_TEST( px3.get() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<int[]> pi( new int[2] );
+
+        boost::local_shared_ptr<int[2]> pi2 = boost::reinterpret_pointer_cast<int[2]>( pi );
+        BOOST_TEST(pi.get() == pi2.get());
+        BOOST_TEST(!(pi < pi2 || pi2 < pi));
+
+        boost::local_shared_ptr<int[1]> pi3 = boost::reinterpret_pointer_cast<int[1]>( pi2 );
+        BOOST_TEST(pi.get() == pi3.get());
+        BOOST_TEST(!(pi < pi3 || pi3 < pi));
+
+        boost::local_shared_ptr<int[]> pi4 = boost::reinterpret_pointer_cast<int[]>( pi3 );
+        BOOST_TEST(pi.get() == pi4.get());
+        BOOST_TEST(!(pi < pi4 || pi4 < pi));
+    }
+
+    {
+        boost::local_shared_ptr<X[]> px( new X[4] );
+
+        boost::local_shared_ptr<X[7]> px2 = boost::reinterpret_pointer_cast<X[7]>( px );
+        BOOST_TEST(px.get() == px2.get());
+        BOOST_TEST(!(px < px2 || px2 < px));
+
+        boost::local_shared_ptr<X[4]> px3 = boost::reinterpret_pointer_cast<X[4]>( px2 );
+        BOOST_TEST(px.get() == px3.get());
+        BOOST_TEST(!(px < px3 || px3 < px));
+
+        boost::local_shared_ptr<X[]> px4 = boost::reinterpret_pointer_cast<X[]>( px3 );
+        BOOST_TEST(px.get() == px4.get());
+        BOOST_TEST(!(px < px4 || px4 < px));
+    }
+}
+
+int main()
+{
+    static_cast_test();
+    const_cast_test();
+    reinterpret_cast_test();
+
+    return boost::report_errors();
+}
diff --git a/test/lsp_array_cv_test.cpp b/test/lsp_array_cv_test.cpp
new file mode 100644
index 0000000..869d206
--- /dev/null
+++ b/test/lsp_array_cv_test.cpp
@@ -0,0 +1,60 @@
+//
+// lsp_array_cv_test.cpp
+//
+// Copyright 2012, 2017 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/smart_ptr/local_shared_ptr.hpp>
+
+struct X
+{
+};
+
+class B
+{
+};
+
+class D: public B
+{
+};
+
+#define TEST_CONV( T, U ) \
+    { \
+        boost::local_shared_ptr< T > p1; \
+        boost::local_shared_ptr< U > p2( p1 ); \
+        p2 = p1; \
+        boost::local_shared_ptr< U > p3 = boost::local_shared_ptr< T >(); \
+        p3 = boost::local_shared_ptr< T >(); \
+    }
+
+#define TEST_CV_TRUE( T, U ) \
+    TEST_CONV( T, U ) \
+    TEST_CONV( T, const U ) \
+    TEST_CONV( T, volatile U ) \
+    TEST_CONV( T, const volatile U ) \
+    TEST_CONV( const T, const U ) \
+    TEST_CONV( const T, const volatile U ) \
+    TEST_CONV( volatile T, volatile U ) \
+    TEST_CONV( volatile T, const volatile U ) \
+    TEST_CONV( const volatile T, const volatile U )
+
+int main()
+{
+    TEST_CV_TRUE( X, X )
+    TEST_CV_TRUE( X, void )
+    TEST_CV_TRUE( D, B )
+
+    TEST_CV_TRUE( X[], X[] )
+    TEST_CV_TRUE( X[3], X[3] )
+
+    TEST_CV_TRUE( X[3], X[] )
+
+    TEST_CV_TRUE( X[], void )
+    TEST_CV_TRUE( X[3], void )
+
+    return 0;
+}
diff --git a/test/lsp_array_n_test.cpp b/test/lsp_array_n_test.cpp
new file mode 100644
index 0000000..a31e264
--- /dev/null
+++ b/test/lsp_array_n_test.cpp
@@ -0,0 +1,248 @@
+//
+// lsp_array_n_test.cpp
+//
+// Copyright 2012, 2017 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/smart_ptr/local_shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <memory>
+#include <utility>
+
+class X: public boost::enable_shared_from_this< X >
+{
+public:
+
+    static int allocations;
+    static int instances;
+
+    X()
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+
+    void* operator new[]( std::size_t n )
+    {
+        ++allocations;
+        return ::operator new[]( n );
+    }
+
+    void operator delete[]( void* p )
+    {
+        --allocations;
+        ::operator delete[]( p );
+    }
+
+private:
+
+    X( X const& );
+    X& operator=( X const& );
+};
+
+int X::allocations = 0;
+int X::instances = 0;
+
+template< class T> class array_deleter
+{
+public:
+
+    static int calls;
+
+    void operator()( T * p ) const
+    {
+        ++calls;
+        delete[] p;
+    }
+
+private:
+
+    template< class Y > void operator()( Y * p ) const;
+};
+
+template< class T > int array_deleter< T >::calls = 0;
+
+int main()
+{
+    BOOST_TEST( X::allocations == 0 );
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::local_shared_ptr<X[3]> px;
+        BOOST_TEST( !px );
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+
+        boost::local_shared_ptr<X[3]> px2( new X[ 3 ] );
+        BOOST_TEST( px2 );
+
+        try
+        {
+            px2[0].shared_from_this();
+            BOOST_ERROR( "px2[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px2[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 3 );
+
+        {
+            X & rx = px2[ 0 ];
+            BOOST_TEST( &rx == px2.get() );
+        }
+
+        boost::local_shared_ptr<X const[3]> px3( px2 );
+        BOOST_TEST( px3 == px2 );
+        BOOST_TEST( !( px2 < px3 ) && !( px3 < px2 ) );
+
+        {
+            X const & rx = px3[ 1 ];
+            BOOST_TEST( &rx == px3.get() + 1 );
+        }
+
+        px3.reset();
+        px3 = px2;
+        BOOST_TEST( px3 == px2 );
+        BOOST_TEST( !( px2 < px3 ) && !( px3 < px2 ) );
+
+        boost::local_shared_ptr<X volatile[3]> px4( px2 );
+        BOOST_TEST( px4 == px2 );
+        BOOST_TEST( !( px2 < px4 ) && !( px4 < px2 ) );
+
+        {
+            X volatile & rx = px4[ 2 ];
+            BOOST_TEST( &rx == px4.get() + 2 );
+        }
+
+        px4.reset();
+        px4 = px2;
+        BOOST_TEST( px4 == px2 );
+        BOOST_TEST( !( px2 < px4 ) && !( px4 < px2 ) );
+
+        boost::local_shared_ptr<void> px5( px2 );
+        BOOST_TEST( px5 == px2 );
+        BOOST_TEST( !( px2 < px5 ) && !( px5 < px2 ) );
+
+        px5.reset();
+        px5 = px2;
+        BOOST_TEST( px5 == px2 );
+        BOOST_TEST( !( px2 < px5 ) && !( px5 < px2 ) );
+
+        boost::weak_ptr<X[3]> wp( px );
+        BOOST_TEST( wp.lock() == px );
+
+        boost::weak_ptr<X[3]> wp2( px2 );
+        BOOST_TEST( wp2.lock() == px2 );
+
+        wp2.reset();
+        wp2 = px2;
+        BOOST_TEST( wp2.lock() == px2 );
+
+        boost::weak_ptr<X const[3]> wp3( px2 );
+        BOOST_TEST( wp3.lock() == px2 );
+
+        wp3.reset();
+        wp3 = px2;
+        BOOST_TEST( wp3.lock() == px2 );
+
+        boost::weak_ptr<X volatile[3]> wp4( px2 );
+        BOOST_TEST( wp4.lock() == px2 );
+
+        wp4.reset();
+        wp4 = px2;
+        BOOST_TEST( wp4.lock() == px2 );
+
+        boost::weak_ptr<void> wp5( px2 );
+        BOOST_TEST( wp5.lock() == px2 );
+
+        wp5.reset();
+        wp5 = px2;
+        BOOST_TEST( wp5.lock() == px2 );
+
+        px2.reset();
+
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 3 );
+
+        px3.reset();
+        px4.reset();
+        px5.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+
+        BOOST_TEST( wp2.lock() == 0 );
+        BOOST_TEST( wp3.lock() == 0 );
+        BOOST_TEST( wp4.lock() == 0 );
+        BOOST_TEST( wp5.lock() == 0 );
+    }
+
+    {
+        boost::local_shared_ptr<X[5]> px( new X[ 5 ], array_deleter< X >() );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 5 );
+
+        try
+        {
+            px[0].shared_from_this();
+            BOOST_ERROR( "px[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        px.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+        BOOST_TEST( array_deleter< X >::calls == 1 );
+    }
+
+    {
+        boost::local_shared_ptr<X[6]> px( new X[ 6 ], array_deleter< X >(), std::allocator< X >() );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 6 );
+
+        try
+        {
+            px[0].shared_from_this();
+            BOOST_ERROR( "px[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        px.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+        BOOST_TEST( array_deleter< X >::calls == 2 );
+    }
+
+    return boost::report_errors();
+}
diff --git a/test/lsp_array_test.cpp b/test/lsp_array_test.cpp
new file mode 100644
index 0000000..77728ea
--- /dev/null
+++ b/test/lsp_array_test.cpp
@@ -0,0 +1,311 @@
+//
+// lsp_array_test.cpp
+//
+// Copyright 2012, 2017 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/smart_ptr/local_shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <memory>
+#include <utility>
+
+class X: public boost::enable_shared_from_this< X >
+{
+public:
+
+    static int allocations;
+    static int instances;
+
+    X()
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        --instances;
+    }
+
+    void* operator new[]( std::size_t n )
+    {
+        ++allocations;
+        return ::operator new[]( n );
+    }
+
+    void operator delete[]( void* p )
+    {
+        --allocations;
+        ::operator delete[]( p );
+    }
+
+private:
+
+    X( X const& );
+    X& operator=( X const& );
+};
+
+int X::allocations = 0;
+int X::instances = 0;
+
+template< class T> class array_deleter
+{
+public:
+
+    static int calls;
+
+    void operator()( T * p ) const
+    {
+        ++calls;
+        delete[] p;
+    }
+
+private:
+
+    template< class Y > void operator()( Y * p ) const;
+};
+
+template< class T > int array_deleter< T >::calls = 0;
+
+int main()
+{
+    BOOST_TEST( X::allocations == 0 );
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::local_shared_ptr<X[]> px;
+        BOOST_TEST( !px );
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+
+        boost::local_shared_ptr<X[]> px2( new X[ 3 ] );
+        BOOST_TEST( px2 );
+
+        try
+        {
+            px2[0].shared_from_this();
+            BOOST_ERROR( "px2[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px2[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 3 );
+
+        {
+            X & rx = px2[ 0 ];
+            BOOST_TEST( &rx == px2.get() );
+        }
+
+        boost::local_shared_ptr<X const[]> px3( px2 );
+        BOOST_TEST( px3 == px2 );
+        BOOST_TEST( !( px2 < px3 ) && !( px3 < px2 ) );
+
+        {
+            X const & rx = px3[ 1 ];
+            BOOST_TEST( &rx == px3.get() + 1 );
+        }
+
+        px3.reset();
+        px3 = px2;
+        BOOST_TEST( px3 == px2 );
+        BOOST_TEST( !( px2 < px3 ) && !( px3 < px2 ) );
+
+        boost::local_shared_ptr<X volatile[]> px4( px2 );
+        BOOST_TEST( px4 == px2 );
+        BOOST_TEST( !( px2 < px4 ) && !( px4 < px2 ) );
+
+        {
+            X volatile & rx = px4[ 2 ];
+            BOOST_TEST( &rx == px4.get() + 2 );
+        }
+
+        px4.reset();
+        px4 = px2;
+        BOOST_TEST( px4 == px2 );
+        BOOST_TEST( !( px2 < px4 ) && !( px4 < px2 ) );
+
+        boost::local_shared_ptr<void> px5( px2 );
+        BOOST_TEST( px5 == px2 );
+        BOOST_TEST( !( px2 < px5 ) && !( px5 < px2 ) );
+
+        px5.reset();
+        px5 = px2;
+        BOOST_TEST( px5 == px2 );
+        BOOST_TEST( !( px2 < px5 ) && !( px5 < px2 ) );
+
+        boost::weak_ptr<X[]> wp( px );
+        BOOST_TEST( wp.lock() == px );
+
+        boost::weak_ptr<X[]> wp2( px2 );
+        BOOST_TEST( wp2.lock() == px2 );
+
+        wp2.reset();
+        wp2 = px2;
+        BOOST_TEST( wp2.lock() == px2 );
+
+        boost::weak_ptr<X const[]> wp3( px2 );
+        BOOST_TEST( wp3.lock() == px2 );
+
+        wp3.reset();
+        wp3 = px2;
+        BOOST_TEST( wp3.lock() == px2 );
+
+        boost::weak_ptr<X volatile[]> wp4( px2 );
+        BOOST_TEST( wp4.lock() == px2 );
+
+        wp4.reset();
+        wp4 = px2;
+        BOOST_TEST( wp4.lock() == px2 );
+
+        boost::weak_ptr<void> wp5( px2 );
+        BOOST_TEST( wp5.lock() == px2 );
+
+        wp5.reset();
+        wp5 = px2;
+        BOOST_TEST( wp5.lock() == px2 );
+
+        px2.reset();
+
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 3 );
+
+        px3.reset();
+        px4.reset();
+        px5.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+
+        BOOST_TEST( wp2.lock() == 0 );
+        BOOST_TEST( wp3.lock() == 0 );
+        BOOST_TEST( wp4.lock() == 0 );
+        BOOST_TEST( wp5.lock() == 0 );
+    }
+
+#if !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
+
+    {
+        std::unique_ptr<X[]> px( new X[ 4 ] );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 4 );
+
+        boost::local_shared_ptr<X[]> px2( std::move( px ) );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 4 );
+        BOOST_TEST( px.get() == 0 );
+
+        try
+        {
+            px2[0].shared_from_this();
+            BOOST_ERROR( "px2[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px2[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        px2.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+    }
+
+    {
+        std::unique_ptr<X[]> px( new X[ 4 ] );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 4 );
+
+        boost::local_shared_ptr<X[]> px2;
+        px2 = std::move( px );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 4 );
+        BOOST_TEST( px.get() == 0 );
+
+        try
+        {
+            px2[0].shared_from_this();
+            BOOST_ERROR( "px2[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px2[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        px2.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+    }
+
+#endif
+
+    {
+        boost::local_shared_ptr<X[]> px( new X[ 5 ], array_deleter< X >() );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 5 );
+
+        try
+        {
+            px[0].shared_from_this();
+            BOOST_ERROR( "px[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        px.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+        BOOST_TEST( array_deleter< X >::calls == 1 );
+    }
+
+    {
+        boost::local_shared_ptr<X[]> px( new X[ 6 ], array_deleter< X >(), std::allocator< X >() );
+        BOOST_TEST( X::allocations == 1 );
+        BOOST_TEST( X::instances == 6 );
+
+        try
+        {
+            px[0].shared_from_this();
+            BOOST_ERROR( "px[0].shared_from_this() failed to throw" );
+        }
+        catch( boost::bad_weak_ptr const& )
+        {
+        }
+        catch( ... )
+        {
+            BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr" );
+        }
+
+        px.reset();
+
+        BOOST_TEST( X::allocations == 0 );
+        BOOST_TEST( X::instances == 0 );
+        BOOST_TEST( array_deleter< X >::calls == 2 );
+    }
+
+    return boost::report_errors();
+}