diff --git a/OpenEXR/IlmImf/ImfAttribute.h b/OpenEXR/IlmImf/ImfAttribute.h
index dcbd9969a..e2b02c26d 100644
--- a/OpenEXR/IlmImf/ImfAttribute.h
+++ b/OpenEXR/IlmImf/ImfAttribute.h
@@ -142,18 +142,20 @@ class TypedAttribute: public Attribute
 {
   public:
 
-    //----------------------------
-    // Constructors and destructor
-    //------------_---------------
+    //------------------------------------------------------------
+    // Constructors and destructor: default behavior. This assumes
+    // that the type T is copyable/assignable/moveable.
+    //------------------------------------------------------------
 
-    TypedAttribute ();
+    TypedAttribute () = default;
     TypedAttribute (const T &value);
-    TypedAttribute (const TypedAttribute<T> &other);
-    virtual ~TypedAttribute ();
+    TypedAttribute (const TypedAttribute<T> &other) = default;
+    TypedAttribute (TypedAttribute<T> &&other) = default;
+
+    virtual ~TypedAttribute () = default;
 
-    TypedAttribute& operator = (const TypedAttribute& other) = delete;
-    TypedAttribute (const TypedAttribute<T> &&other);
-    TypedAttribute& operator = (const TypedAttribute&& other) = delete;
+    TypedAttribute& operator = (const TypedAttribute<T>& other) = default;
+    TypedAttribute& operator = (TypedAttribute<T>&& other) = default;
     
     //--------------------------------
     // Access to the attribute's value
@@ -247,14 +249,6 @@ class TypedAttribute: public Attribute
 //------------------------------------
 // Implementation of TypedAttribute<T>
 //------------------------------------
-template <class T>
-TypedAttribute<T>::TypedAttribute ():
-    Attribute (),
-    _value (T())
-{
-    // empty
-}
-
 
 template <class T>
 TypedAttribute<T>::TypedAttribute (const T & value):
@@ -264,23 +258,6 @@ TypedAttribute<T>::TypedAttribute (const T & value):
     // empty
 }
 
-
-template <class T>
-TypedAttribute<T>::TypedAttribute (const TypedAttribute<T> &other):
-    Attribute (other),
-    _value ()
-{
-    copyValueFrom (other);
-}
-
-
-template <class T>
-TypedAttribute<T>::~TypedAttribute ()
-{
-    // empty
-}
-
-
 template <class T>
 inline T &
 TypedAttribute<T>::value ()
diff --git a/OpenEXR/IlmImf/ImfIO.h b/OpenEXR/IlmImf/ImfIO.h
index 643e76362..e93676bd5 100644
--- a/OpenEXR/IlmImf/ImfIO.h
+++ b/OpenEXR/IlmImf/ImfIO.h
@@ -149,8 +149,8 @@ class IStream
 
     IStream (const IStream &) = delete;
     IStream & operator = (const IStream &) = delete;
-    IStream (const IStream &&) = delete;
-    IStream & operator = (const IStream &&) = delete;
+    IStream (IStream &&) = delete;
+    IStream & operator = (IStream &&) = delete;
 
     std::string		_fileName;
 };
@@ -217,8 +217,8 @@ class OStream
 
     OStream (const OStream &) = delete;
     OStream & operator = (const OStream &) = delete;
-    OStream (const OStream &&) = delete;
-    OStream & operator = (const OStream &&) = delete;
+    OStream (OStream &&) = delete;
+    OStream & operator = (OStream &&) = delete;
 
     std::string		_fileName;
 };
diff --git a/OpenEXR/IlmImfTest/testAttributes.cpp b/OpenEXR/IlmImfTest/testAttributes.cpp
index e506273b3..2fff879c8 100644
--- a/OpenEXR/IlmImfTest/testAttributes.cpp
+++ b/OpenEXR/IlmImfTest/testAttributes.cpp
@@ -578,6 +578,221 @@ print_type(const OPENEXR_IMF_NAMESPACE::TypedAttribute<T> & object)
     cout << object.typeName() << endl;
 }
 
+//
+// Test to confirm that the copy/move constructors are implemented
+// properly.
+//
+
+static int default_constructor;
+static int destructor;
+static int copy_constructor;
+static int assignment_operator;
+static int move_constructor;
+static int move_assignment_operator;
+
+struct TestType 
+{
+    TestType() 
+    {
+        default_constructor++;
+    }
+
+    ~TestType() 
+    {
+        destructor++;
+    }
+    
+    TestType (const TestType& other) 
+        : _f (other._f)
+    {
+        copy_constructor++;
+    }
+
+    TestType& operator = (const TestType& other)
+    {
+        assignment_operator++;
+        _f = other._f;
+        return *this;
+    }
+
+    TestType (TestType&& other) 
+        : _f (std::move (other._f))
+    {
+        move_constructor++;
+    }
+
+    TestType& operator = (TestType&& other)
+    {
+        move_assignment_operator++;
+        _f = std::move (other._f);
+        return *this;
+    }
+
+    static TestType func()
+    {
+        TestType t;
+        return t;
+    }
+    
+    static TestType arg (TestType a)
+    {
+        return a;
+    }
+    
+    int _f;
+    
+    static void assert_count (int dc, int d, int cc, int ao, int mc, int mao)
+    {
+        assert (dc == default_constructor);
+        assert (d == destructor);
+        assert (cc == copy_constructor);
+        assert (ao == assignment_operator);
+        assert (mc == move_constructor);
+        assert (mao == move_assignment_operator);
+    }
+        
+    static void reset()
+    {
+        default_constructor = 0;
+        destructor = 0;
+        copy_constructor = 0;
+        assignment_operator = 0;
+        move_constructor = 0;
+        move_assignment_operator = 0;
+    }
+
+    static std::string str()
+    {
+        std::stringstream s;
+        if (default_constructor)
+            s << "default_constructor=" << default_constructor << std::endl;        
+        if (destructor)
+            s << "destructor=" << destructor << std::endl;        
+
+        if (copy_constructor)
+            s << "copy_constructor=" << copy_constructor << std::endl;        
+
+        if (assignment_operator)
+            s << "assignment_operator=" << assignment_operator << std::endl;        
+        if (move_constructor)
+            s << "move_constructor=" << move_constructor << std::endl;        
+
+        if (move_assignment_operator)
+            s << "move_assignment_operator=" << move_assignment_operator << std::endl;        
+        return s.str();
+    }
+};
+
+typedef Imf::TypedAttribute<TestType> TestTypedAttribute;
+
+template <>
+const char *
+TestTypedAttribute::staticTypeName ()
+{
+    return "test";
+}
+
+template <>
+void
+TestTypedAttribute::writeValueTo (OPENEXR_IMF_INTERNAL_NAMESPACE::OStream &os, int version) const
+{
+}
+
+template <>
+void
+TestTypedAttribute::readValueFrom (OPENEXR_IMF_INTERNAL_NAMESPACE::IStream &is, int size, int version)
+{
+}
+
+TestType
+testTypeFunc()
+{
+    return TestType();
+}
+
+TestTypedAttribute
+testFunc()
+{
+    TestTypedAttribute a;
+    return a;
+}
+
+TestTypedAttribute
+testArg (TestTypedAttribute a)
+{
+    return a;
+}
+
+void
+testTypedAttribute()
+{
+    std::cout << "running testTypedAttribute()\n";
+    
+    //
+    // Validate the test type
+    //
+    
+    TestType A;
+    TestType::assert_count (1, 0, 0, 0, 0, 0);
+    TestType::reset();
+
+    TestType B (A);
+    TestType::assert_count (0, 0, 1, 0, 0, 0);
+    TestType::reset();
+
+    B = A;
+    TestType::assert_count (0, 0, 0, 1, 0, 0);
+    TestType::reset();
+
+    A = std::move (B);
+    TestType::assert_count (0, 0, 0, 0, 0, 1);
+    TestType::reset();
+
+    A = TestType::func();
+    TestType::assert_count (1, 1, 0, 0, 0, 1);
+    TestType::reset();
+
+    A = TestType::arg(B);
+    TestType::assert_count (0, 2, 1, 0, 1, 1);
+    TestType::reset();
+
+    //
+    // Test the attribute type
+    //
+    
+    TestTypedAttribute a;
+    TestType::assert_count (1, 0, 0, 0, 0, 0);
+    TestType::reset();
+
+    {
+        TestType x;
+    }
+    TestType::assert_count (1, 1, 0, 0, 0, 0);
+    TestType::reset();
+    
+    TestTypedAttribute b(a);
+    TestType::assert_count (0, 0, 1, 0, 0, 0);
+    TestType::reset();
+
+    a = b;
+    TestType::assert_count (0, 0, 0, 1, 0, 0);
+    TestType::reset();
+
+    a = std::move (b);
+    TestType::assert_count (0, 0, 0, 0, 0, 1);
+    TestType::reset();
+
+    a = testFunc();
+    TestType::assert_count (1, 1, 0, 0, 0, 1);
+    TestType::reset();
+
+    a = testArg(b);
+    TestType::assert_count (0, 2, 1, 0, 1, 1);
+    TestType::reset();
+
+    std::cout << "ok." << std::endl;
+}
+
 void
 testAttributes (const std::string &tempDir)
 {
@@ -585,6 +800,8 @@ testAttributes (const std::string &tempDir)
     {
 	cout << "Testing built-in attributes" << endl;
 
+        testTypedAttribute();
+
 	const int W = 217;
 	const int H = 197;