diff --git a/io/source/stm/opump.cxx b/io/source/stm/opump.cxx
index fc751b677f95..df3e6132319d 100644
--- a/io/source/stm/opump.cxx
+++ b/io/source/stm/opump.cxx
@@ -263,14 +263,14 @@ void Pump::run()
 
             if( ! rInput.is() )
             {
-                throw NotConnectedException( "no input stream set", static_cast<OWeakObject*>(this) );
+                throw NotConnectedException( "no input stream set", getXWeak() );
             }
             Sequence< sal_Int8 > aData;
             while( rInput->readSomeBytes( aData, 65536 ) )
             {
                 if( ! rOutput.is() )
                 {
-                    throw NotConnectedException( "no output stream set", static_cast<OWeakObject*>(this) );
+                    throw NotConnectedException( "no output stream set", getXWeak() );
                 }
                 rOutput->writeBytes( aData );
                 osl_yieldThread();
diff --git a/io/test/stm/datatest.cxx b/io/test/stm/datatest.cxx
index a085bf6d7d5b..ef31f099d496 100644
--- a/io/test/stm/datatest.cxx
+++ b/io/test/stm/datatest.cxx
@@ -326,8 +326,7 @@ void ODataStreamTest::testSimple(   const Reference < XDataInputStream > &rInput
 **/
 Reference < XInterface > SAL_CALL ODataStreamTest_CreateInstance( const Reference < XMultiServiceFactory > & rSMgr ) throw(Exception)
 {
-    ODataStreamTest *p = new ODataStreamTest( rSMgr );
-    return Reference < XInterface > ( (static_cast< OWeakObject *  >(p)) );
+    return getXWeak(new ODataStreamTest( rSMgr ));
 }
 
 Sequence<OUString> ODataStreamTest_getSupportedServiceNames( int i) throw ()
@@ -596,8 +595,7 @@ Reference < XInterface > SAL_CALL OMyPersistObject_CreateInstance(
     const Reference < XMultiServiceFactory > & rSMgr )
     throw(Exception)
 {
-    MyPersistObject *p = new MyPersistObject( );
-    return Reference < XInterface > ( (static_cast< OWeakObject *  >(p)) );
+    return getXWeak(new MyPersistObject( ));
 }
 
 Sequence<OUString> OMyPersistObject_getSupportedServiceNames( ) throw ()
@@ -1040,8 +1038,7 @@ void OObjectStreamTest::testObject(     const Reference<  XObjectOutputStream >
 
 Reference < XInterface > SAL_CALL OObjectStreamTest_CreateInstance( const Reference < XMultiServiceFactory > & rSMgr ) throw(Exception)
 {
-    OObjectStreamTest *p = new OObjectStreamTest( rSMgr );
-    return Reference < XInterface > ( (static_cast< OWeakObject *  >(p)) );
+    return getXWeak(new OObjectStreamTest( rSMgr ));
 }
 
 Sequence<OUString> OObjectStreamTest_getSupportedServiceNames( int i) throw ()
diff --git a/io/test/stm/marktest.cxx b/io/test/stm/marktest.cxx
index fbfc2008214f..0dd01a7f7747 100644
--- a/io/test/stm/marktest.cxx
+++ b/io/test/stm/marktest.cxx
@@ -360,8 +360,7 @@ void OMarkableOutputStreamTest::testSimple(     const Reference< XOutputStream >
 **/
 Reference < XInterface > SAL_CALL OMarkableOutputStreamTest_CreateInstance( const Reference< XMultiServiceFactory > & rSMgr ) throw(Exception)
 {
-    OMarkableOutputStreamTest *p = new OMarkableOutputStreamTest( rSMgr );
-    return Reference < XInterface > ( (static_cast< OWeakObject *  >(p)) );
+    return getXWeak(new OMarkableOutputStreamTest( rSMgr ));
 }
 
 
@@ -619,8 +618,7 @@ void OMarkableInputStreamTest::testSimple(      const Reference< XOutputStream >
 **/
 Reference < XInterface > SAL_CALL OMarkableInputStreamTest_CreateInstance( const Reference< XMultiServiceFactory > & rSMgr ) throw(Exception)
 {
-    OMarkableInputStreamTest *p = new OMarkableInputStreamTest( rSMgr );
-    return Reference < XInterface > ( (static_cast< OWeakObject *  >(p)) );
+    return getXWeak(new OMarkableInputStreamTest( rSMgr ));
 }
 
 
diff --git a/io/test/stm/pipetest.cxx b/io/test/stm/pipetest.cxx
index 46637f3f245a..da5c5f20ba49 100644
--- a/io/test/stm/pipetest.cxx
+++ b/io/test/stm/pipetest.cxx
@@ -392,9 +392,7 @@ void OPipeTest::testMultithreading( const Reference < XInterface > &r )
 **/
 Reference < XInterface > SAL_CALL OPipeTest_CreateInstance( const Reference< XMultiServiceFactory>  & rSMgr ) throw (Exception)
 {
-    OPipeTest *p = new OPipeTest( rSMgr );
-    Reference< XInterface > x ( (static_cast< OWeakObject *  >(p)) );
-    return x;
+    return getXWeak(new OPipeTest( rSMgr ));
 }