4 files changed, 7 insertions, 7 deletions
diff --git a/chart2/source/view/inc/VDataSeries.hxx b/chart2/source/view/inc/VDataSeries.hxx
index 7231f0515338..f547cb4013ce 100644
--- a/chart2/source/view/inc/VDataSeries.hxx
+++ b/chart2/source/view/inc/VDataSeries.hxx
@@ -94,8 +94,8 @@ public:
 
     bool        hasPropertyMapping( const OUString& rPropName ) const;
 
-    css::uno::Sequence< double > getAllX() const;
-    css::uno::Sequence< double > getAllY() const;
+    css::uno::Sequence< double > const & getAllX() const;
+    css::uno::Sequence< double > const & getAllY() const;
 
     double getXMeanValue() const;
     double getYMeanValue() const;
diff --git a/chart2/source/view/main/DrawModelWrapper.cxx b/chart2/source/view/main/DrawModelWrapper.cxx
index f787a4906084..d62886091cce 100644
--- a/chart2/source/view/main/DrawModelWrapper.cxx
+++ b/chart2/source/view/main/DrawModelWrapper.cxx
@@ -163,7 +163,7 @@ uno::Reference< lang::XMultiServiceFactory > DrawModelWrapper::getShapeFactory()
     return xShapeFactory;
 }
 
-uno::Reference< drawing::XDrawPage > DrawModelWrapper::getMainDrawPage()
+uno::Reference< drawing::XDrawPage > const & DrawModelWrapper::getMainDrawPage()
 {
     if (m_xMainDrawPage.is())
         return m_xMainDrawPage;
@@ -192,7 +192,7 @@ uno::Reference< drawing::XDrawPage > DrawModelWrapper::getMainDrawPage()
     // AbstractShapeFactory::getOrCreateShapeFactory(this->getShapeFactory())->getOrCreateChartRootShape( m_xMainDrawPage );
     return m_xMainDrawPage;
 }
-uno::Reference< drawing::XDrawPage > DrawModelWrapper::getHiddenDrawPage()
+uno::Reference< drawing::XDrawPage > const & DrawModelWrapper::getHiddenDrawPage()
 {
     if( !m_xHiddenDrawPage.is() )
     {
diff --git a/chart2/source/view/main/DummyXShape.cxx b/chart2/source/view/main/DummyXShape.cxx
index 544b272ea267..579765ab18da 100644
--- a/chart2/source/view/main/DummyXShape.cxx
+++ b/chart2/source/view/main/DummyXShape.cxx
@@ -304,7 +304,7 @@ OUString SAL_CALL DummyXShape::getImplementationName()
 
 namespace {
 
-uno::Sequence< OUString > listSupportedServices()
+uno::Sequence< OUString > const & listSupportedServices()
 {
     static const uno::Sequence< OUString > aSupportedServices{
         "com.sun.star.drawing.Shape",
diff --git a/chart2/source/view/main/VDataSeries.cxx b/chart2/source/view/main/VDataSeries.cxx
index 6b98b7a6f1ab..81e7bd2a2ce1 100644
--- a/chart2/source/view/main/VDataSeries.cxx
+++ b/chart2/source/view/main/VDataSeries.cxx
@@ -725,7 +725,7 @@ double VDataSeries::getMaximumofAllDifferentYValues( sal_Int32 index ) const
     return fMax;
 }
 
-uno::Sequence< double > VDataSeries::getAllX() const
+uno::Sequence< double > const & VDataSeries::getAllX() const
 {
     if(!m_aValues_X.is() && !m_aValues_X.getLength() && m_nPointCount)
     {
@@ -738,7 +738,7 @@ uno::Sequence< double > VDataSeries::getAllX() const
     return m_aValues_X.Doubles;
 }
 
-uno::Sequence< double > VDataSeries::getAllY() const
+uno::Sequence< double > const & VDataSeries::getAllY() const
 {
     if(!m_aValues_Y.is() && !m_aValues_Y.getLength() && m_nPointCount)
     {