new loplugin:constexprliteral

OUStringLiteral should be declared constexpr, to enforce
that it is initialised at compile-time and not runtime.

This seems to make a different at least on Visual Studio

Change-Id: I1698f5fa22ddb480347c2f4d444530c2e0e88d92
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/153499
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

22 files changed, 81 insertions, 81 deletions

diff --git a/xmloff/source/chart/SchXMLSeries2Context.cxx b/xmloff/source/chart/SchXMLSeries2Context.cxx
index 5304f43ab014..b559d5f075e0 100644
--- a/xmloff/source/chart/SchXMLSeries2Context.cxx
+++ b/xmloff/source/chart/SchXMLSeries2Context.cxx
@@ -886,7 +886,7 @@ void SchXMLSeries2Context::setStylesToSeries( SeriesDefaultsAndStyles& rSeriesDe
             // this property)
             bool bHasErrorBarRangesFromData = false;
             {
-                static const OUStringLiteral aErrorBarStylePropName( u"ErrorBarStyle");
+                static constexpr OUStringLiteral aErrorBarStylePropName( u"ErrorBarStyle");
                 uno::Any aErrorBarStyle(
                     SchXMLTools::getPropertyFromContext( aErrorBarStylePropName, pPropStyleContext, pStylesCtxt ));
                 if( aErrorBarStyle.hasValue())
diff --git a/xmloff/source/chart/SchXMLTableContext.cxx b/xmloff/source/chart/SchXMLTableContext.cxx
index 27ae7311364c..b12f5886e69b 100644
--- a/xmloff/source/chart/SchXMLTableContext.cxx
+++ b/xmloff/source/chart/SchXMLTableContext.cxx
@@ -104,7 +104,7 @@ void lcl_fillRangeMapping(
     sal_Int32 nColOffset = ( rTable.bHasHeaderColumn ? 1 : 0 );
 
     const OUString lcl_aCategoriesRange(aCategoriesRange);
-    static const OUStringLiteral lcl_aLabelPrefix(u"label ");
+    static constexpr OUStringLiteral lcl_aLabelPrefix(u"label ");
 
     // Fill range mapping
     const size_t nTableRowCount( rTable.aData.size());
diff --git a/xmloff/source/chart/SchXMLTools.cxx b/xmloff/source/chart/SchXMLTools.cxx
index b6299a4b0ed7..ff344f164edc 100644
--- a/xmloff/source/chart/SchXMLTools.cxx
+++ b/xmloff/source/chart/SchXMLTools.cxx
@@ -91,7 +91,7 @@ sal_Int32 lcl_getBuildIDFromGenerator( std::u16string_view rGenerator )
 {
     //returns -1 if nothing found
     sal_Int32 nBuildId = -1;
-    static const OUStringLiteral sBuildCompare(  u"$Build-"  );
+    static constexpr OUStringLiteral sBuildCompare(  u"$Build-"  );
     size_t nBegin = rGenerator.find( sBuildCompare );
     if( nBegin != std::u16string_view::npos )
     {
@@ -632,7 +632,7 @@ void setXMLRangePropertyAtDataSequence(
         return;
     try
     {
-        static const OUStringLiteral aXMLRangePropName(  u"CachedXMLRange" );
+        static constexpr OUStringLiteral aXMLRangePropName(  u"CachedXMLRange" );
         Reference< beans::XPropertySet > xProp( xDataSequence, uno::UNO_QUERY_THROW );
         Reference< beans::XPropertySetInfo > xInfo( xProp->getPropertySetInfo());
         if( xInfo.is() && xInfo->hasPropertyByName( aXMLRangePropName ))
@@ -654,7 +654,7 @@ bool getXMLRangePropertyFromDataSequence(
     {
         try
         {
-            static const OUStringLiteral aXMLRangePropName(  u"CachedXMLRange" );
+            static constexpr OUStringLiteral aXMLRangePropName(  u"CachedXMLRange" );
             Reference< beans::XPropertySet > xProp( xDataSequence, uno::UNO_QUERY_THROW );
             Reference< beans::XPropertySetInfo > xInfo( xProp->getPropertySetInfo());
             bResult =
@@ -840,7 +840,7 @@ Reference< chart2::data::XDataProvider > getDataProviderFromParent( const Refere
         Reference< lang::XMultiServiceFactory > xFact( xChild->getParent(), uno::UNO_QUERY );
         if( xFact.is() )
         {
-            static const OUStringLiteral aDataProviderServiceName( u"com.sun.star.chart2.data.DataProvider");
+            static constexpr OUStringLiteral aDataProviderServiceName( u"com.sun.star.chart2.data.DataProvider");
             const uno::Sequence< OUString > aServiceNames( xFact->getAvailableServiceNames());
             const OUString * pBegin = aServiceNames.getConstArray();
             const OUString * pEnd = pBegin + aServiceNames.getLength();
diff --git a/xmloff/source/core/SettingsExportHelper.cxx b/xmloff/source/core/SettingsExportHelper.cxx
index ad73fe9843d1..8cd0519918a5 100644
--- a/xmloff/source/core/SettingsExportHelper.cxx
+++ b/xmloff/source/core/SettingsExportHelper.cxx
@@ -287,16 +287,16 @@ void XMLSettingsExportHelper::exportSymbolDescriptors(
 {
     rtl::Reference< comphelper::IndexedPropertyValuesContainer > xBox = new comphelper::IndexedPropertyValuesContainer();
 
-    static const OUStringLiteral sName     ( u"Name" );
-    static const OUStringLiteral sExportName ( u"ExportName" );
-    static const OUStringLiteral sSymbolSet ( u"SymbolSet" );
-    static const OUStringLiteral sCharacter ( u"Character" );
-    static const OUStringLiteral sFontName ( u"FontName" );
-    static const OUStringLiteral sCharSet  ( u"CharSet" );
-    static const OUStringLiteral sFamily   ( u"Family" );
-    static const OUStringLiteral sPitch    ( u"Pitch" );
-    static const OUStringLiteral sWeight   ( u"Weight" );
-    static const OUStringLiteral sItalic   ( u"Italic" );
+    static constexpr OUStringLiteral sName     ( u"Name" );
+    static constexpr OUStringLiteral sExportName ( u"ExportName" );
+    static constexpr OUStringLiteral sSymbolSet ( u"SymbolSet" );
+    static constexpr OUStringLiteral sCharacter ( u"Character" );
+    static constexpr OUStringLiteral sFontName ( u"FontName" );
+    static constexpr OUStringLiteral sCharSet  ( u"CharSet" );
+    static constexpr OUStringLiteral sFamily   ( u"Family" );
+    static constexpr OUStringLiteral sPitch    ( u"Pitch" );
+    static constexpr OUStringLiteral sWeight   ( u"Weight" );
+    static constexpr OUStringLiteral sItalic   ( u"Italic" );
 
     sal_Int32 nCount = rProps.getLength();
     const formula::SymbolDescriptor *pDescriptor = rProps.getConstArray();
@@ -427,11 +427,11 @@ void XMLSettingsExportHelper::exportForbiddenCharacters(
      * xmloff/source/core/DocumentSettingsContext.cxx
      * XMLConfigItemMapIndexedContext::EndElement() */
 
-    static const OUStringLiteral sLanguage  ( u"Language" );
-    static const OUStringLiteral sCountry   ( u"Country" );
-    static const OUStringLiteral sVariant   ( u"Variant" );
-    static const OUStringLiteral sBeginLine ( u"BeginLine" );
-    static const OUStringLiteral sEndLine   ( u"EndLine" );
+    static constexpr OUStringLiteral sLanguage  ( u"Language" );
+    static constexpr OUStringLiteral sCountry   ( u"Country" );
+    static constexpr OUStringLiteral sVariant   ( u"Variant" );
+    static constexpr OUStringLiteral sBeginLine ( u"BeginLine" );
+    static constexpr OUStringLiteral sEndLine   ( u"EndLine" );
 
     sal_Int32 nPos = 0;
     for( const auto& rLocale : aLocales )
diff --git a/xmloff/source/core/xmlexp.cxx b/xmloff/source/core/xmlexp.cxx
index 03277884ae0b..36e0a8454ebf 100644
--- a/xmloff/source/core/xmlexp.cxx
+++ b/xmloff/source/core/xmlexp.cxx
@@ -731,7 +731,7 @@ void SAL_CALL SvXMLExport::initialize( const uno::Sequence< uno::Any >& aArgumen
     mpImpl->mStreamName = sName; // Note: may be empty (XSLT)
 
     // Written OpenDocument file format doesn't fit to the created text document (#i69627#)
-    static const OUStringLiteral sOutlineStyleAsNormalListStyle(
+    static constexpr OUStringLiteral sOutlineStyleAsNormalListStyle(
             u"OutlineStyleAsNormalListStyle" );
     if( xPropertySetInfo->hasPropertyByName( sOutlineStyleAsNormalListStyle ) )
     {
@@ -743,7 +743,7 @@ void SAL_CALL SvXMLExport::initialize( const uno::Sequence< uno::Any >& aArgumen
     if( xPropertySetInfo->hasPropertyByName( sTargetStorage ) )
         mxExportInfo->getPropertyValue( sTargetStorage ) >>= mpImpl->mxTargetStorage;
 
-    static const OUStringLiteral sExportTextNumberElement(
+    static constexpr OUStringLiteral sExportTextNumberElement(
             u"ExportTextNumberElement" );
     if( xPropertySetInfo->hasPropertyByName( sExportTextNumberElement ) )
     {
diff --git a/xmloff/source/draw/XMLGraphicsDefaultStyle.cxx b/xmloff/source/draw/XMLGraphicsDefaultStyle.cxx
index 4341c6db98cc..a13c58b41d91 100644
--- a/xmloff/source/draw/XMLGraphicsDefaultStyle.cxx
+++ b/xmloff/source/draw/XMLGraphicsDefaultStyle.cxx
@@ -119,7 +119,7 @@ void XMLGraphicsDefaultStyle::SetDefaults()
     ) )
         bWordWrapDefault = false;
 
-    static const OUStringLiteral sTextWordWrap( u"TextWordWrap" );
+    static constexpr OUStringLiteral sTextWordWrap( u"TextWordWrap" );
     Reference< XPropertySetInfo > xInfo( xDefaults->getPropertySetInfo() );
     if ( xInfo->hasPropertyByName( sTextWordWrap ) )
         xDefaults->setPropertyValue( sTextWordWrap, Any( bWordWrapDefault ) );
diff --git a/xmloff/source/draw/layerexp.cxx b/xmloff/source/draw/layerexp.cxx
index 491d28c9d4ab..82a8dd410d6a 100644
--- a/xmloff/source/draw/layerexp.cxx
+++ b/xmloff/source/draw/layerexp.cxx
@@ -53,12 +53,12 @@ void SdXMLayerExporter::exportLayer( SvXMLExport& rExport )
     if( nCount == 0 )
         return;
 
-    static const OUStringLiteral strName( u"Name" );
-    static const OUStringLiteral strTitle( u"Title" );
-    static const OUStringLiteral strDescription( u"Description" );
-    static const OUStringLiteral strIsVisible( u"IsVisible");
-    static const OUStringLiteral strIsPrintable( u"IsPrintable");
-    static const OUStringLiteral strIsLocked( u"IsLocked" );
+    static constexpr OUStringLiteral strName( u"Name" );
+    static constexpr OUStringLiteral strTitle( u"Title" );
+    static constexpr OUStringLiteral strDescription( u"Description" );
+    static constexpr OUStringLiteral strIsVisible( u"IsVisible");
+    static constexpr OUStringLiteral strIsPrintable( u"IsPrintable");
+    static constexpr OUStringLiteral strIsLocked( u"IsLocked" );
 
     OUString sTmp;
 
diff --git a/xmloff/source/draw/sdxmlexp.cxx b/xmloff/source/draw/sdxmlexp.cxx
index 915c3e9360c0..6b28da6fd2e2 100644
--- a/xmloff/source/draw/sdxmlexp.cxx
+++ b/xmloff/source/draw/sdxmlexp.cxx
@@ -1377,7 +1377,7 @@ HeaderFooterPageSettingsImpl SdXMLExport::ImpPrepDrawPageHeaderFooterDecls( cons
 
         OUString aStrText;
 
-        static const OUStringLiteral aStrHeaderTextProp( u"HeaderText" );
+        static constexpr OUStringLiteral aStrHeaderTextProp( u"HeaderText" );
         if( xInfo->hasPropertyByName( aStrHeaderTextProp ) )
         {
             xSet->getPropertyValue( aStrHeaderTextProp  ) >>= aStrText;
@@ -1385,7 +1385,7 @@ HeaderFooterPageSettingsImpl SdXMLExport::ImpPrepDrawPageHeaderFooterDecls( cons
                 aSettings.maStrHeaderDeclName = findOrAppendImpl( maHeaderDeclsVector, aStrText, gpStrHeaderTextPrefix );
         }
 
-        static const OUStringLiteral aStrFooterTextProp( u"FooterText" );
+        static constexpr OUStringLiteral aStrFooterTextProp( u"FooterText" );
         if( xInfo->hasPropertyByName( aStrFooterTextProp ) )
         {
             xSet->getPropertyValue( aStrFooterTextProp ) >>= aStrText;
@@ -1393,7 +1393,7 @@ HeaderFooterPageSettingsImpl SdXMLExport::ImpPrepDrawPageHeaderFooterDecls( cons
                 aSettings.maStrFooterDeclName = findOrAppendImpl( maFooterDeclsVector, aStrText, gpStrFooterTextPrefix );
         }
 
-        static const OUStringLiteral aStrDateTimeTextProp( u"DateTimeText" );
+        static constexpr OUStringLiteral aStrDateTimeTextProp( u"DateTimeText" );
         if( xInfo->hasPropertyByName( aStrDateTimeTextProp ) )
         {
             bool bFixed = false;
@@ -1508,7 +1508,7 @@ OUString SdXMLExport::ImpCreatePresPageStyleName( const Reference<XDrawPage>& xD
             // which itself is a property of the pages property set
             // we now merge these two propertysets if possible to simulate
             // a single propertyset with all draw page properties
-            static const OUStringLiteral aBackground(u"Background");
+            static constexpr OUStringLiteral aBackground(u"Background");
             Reference< beans::XPropertySet > xPropSet2;
             Reference< beans::XPropertySetInfo > xInfo( xPropSet1->getPropertySetInfo() );
             if( xInfo.is() && xInfo->hasPropertyByName( aBackground ) )
diff --git a/xmloff/source/draw/shapeexport.cxx b/xmloff/source/draw/shapeexport.cxx
index 51976a625c97..a7f91d9326ef 100644
--- a/xmloff/source/draw/shapeexport.cxx
+++ b/xmloff/source/draw/shapeexport.cxx
@@ -3127,7 +3127,7 @@ void XMLShapeExport::ImpExportPageShape(
 
     // export page number used for this page
     uno::Reference< beans::XPropertySetInfo > xPropSetInfo( xPropSet->getPropertySetInfo() );
-    static const OUStringLiteral aPageNumberStr(u"PageNumber");
+    static constexpr OUStringLiteral aPageNumberStr(u"PageNumber");
     if( xPropSetInfo.is() && xPropSetInfo->hasPropertyByName(aPageNumberStr))
     {
         sal_Int32 nPageNumber = 0;
@@ -3527,14 +3527,14 @@ void XMLShapeExport::ImpExportMediaShape(
     const OUString aFalseStr(  "false"  ), aTrueStr(  "true"  );
 
     bool bLoop = false;
-    static const OUStringLiteral aLoopStr(  u"Loop"  );
+    static constexpr OUStringLiteral aLoopStr(  u"Loop"  );
     xPropSet->getPropertyValue( aLoopStr ) >>= bLoop;
     mrExport.AddAttribute( XML_NAMESPACE_DRAW, XML_NAME, aLoopStr );
     mrExport.AddAttribute( XML_NAMESPACE_DRAW, XML_VALUE, bLoop ? aTrueStr : aFalseStr );
     delete new SvXMLElementExport( mrExport, XML_NAMESPACE_DRAW, XML_PARAM, false, true );
 
     bool bMute = false;
-    static const OUStringLiteral aMuteStr(  u"Mute"  );
+    static constexpr OUStringLiteral aMuteStr(  u"Mute"  );
     xPropSet->getPropertyValue( aMuteStr ) >>= bMute;
     mrExport.AddAttribute( XML_NAMESPACE_DRAW, XML_NAME, aMuteStr );
     mrExport.AddAttribute( XML_NAMESPACE_DRAW, XML_VALUE, bMute ? aTrueStr : aFalseStr );
@@ -3910,9 +3910,9 @@ void XMLShapeExport::export3DLamps( const css::uno::Reference< css::beans::XProp
     OUString aStr;
     OUStringBuffer sStringBuffer;
 
-    static const OUStringLiteral aColorPropName(u"D3DSceneLightColor");
-    static const OUStringLiteral aDirectionPropName(u"D3DSceneLightDirection");
-    static const OUStringLiteral aLightOnPropName(u"D3DSceneLightOn");
+    static constexpr OUStringLiteral aColorPropName(u"D3DSceneLightColor");
+    static constexpr OUStringLiteral aDirectionPropName(u"D3DSceneLightDirection");
+    static constexpr OUStringLiteral aLightOnPropName(u"D3DSceneLightOn");
 
     ::basegfx::B3DVector aLightDirection;
     drawing::Direction3D aLightDir;
@@ -4366,7 +4366,7 @@ static void ImpExportEnhancedGeometry( SvXMLExport& rExport, const uno::Referenc
     uno::Reference< beans::XPropertySetInfo > xPropSetInfo( xPropSet->getPropertySetInfo() );
 
     // geometry
-    static const OUStringLiteral sCustomShapeGeometry( u"CustomShapeGeometry" );
+    static constexpr OUStringLiteral sCustomShapeGeometry( u"CustomShapeGeometry" );
     if ( xPropSetInfo.is() && xPropSetInfo->hasPropertyByName( sCustomShapeGeometry ) )
     {
         uno::Any aGeoPropSet( xPropSet->getPropertyValue( sCustomShapeGeometry ) );
diff --git a/xmloff/source/draw/xexptran.cxx b/xmloff/source/draw/xexptran.cxx
index 3665533eeff7..c3ea5a4b0f70 100644
--- a/xmloff/source/draw/xexptran.cxx
+++ b/xmloff/source/draw/xexptran.cxx
@@ -355,12 +355,12 @@ void SdXMLImExTransform2D::SetString(const OUString& rNew, const SvXMLUnitConver
     const OUString aStr = msString;
     const sal_Int32 nLen(aStr.getLength());
 
-    static const OUStringLiteral aString_rotate( u"rotate" );
-    static const OUStringLiteral aString_scale( u"scale" );
-    static const OUStringLiteral aString_translate( u"translate" );
-    static const OUStringLiteral aString_skewX( u"skewX" );
-    static const OUStringLiteral aString_skewY( u"skewY" );
-    static const OUStringLiteral aString_matrix( u"matrix" );
+    static constexpr OUStringLiteral aString_rotate( u"rotate" );
+    static constexpr OUStringLiteral aString_scale( u"scale" );
+    static constexpr OUStringLiteral aString_translate( u"translate" );
+    static constexpr OUStringLiteral aString_skewX( u"skewX" );
+    static constexpr OUStringLiteral aString_skewY( u"skewY" );
+    static constexpr OUStringLiteral aString_matrix( u"matrix" );
 
     sal_Int32 nPos(0);
 
@@ -762,12 +762,12 @@ void SdXMLImExTransform3D::SetString(const OUString& rNew, const SvXMLUnitConver
     const OUString aStr = msString;
     const sal_Int32 nLen(aStr.getLength());
 
-    static const OUStringLiteral aString_rotatex( u"rotatex" );
-    static const OUStringLiteral aString_rotatey( u"rotatey" );
-    static const OUStringLiteral aString_rotatez( u"rotatez" );
-    static const OUStringLiteral aString_scale( u"scale" );
-    static const OUStringLiteral aString_translate( u"translate" );
-    static const OUStringLiteral aString_matrix( u"matrix" );
+    static constexpr OUStringLiteral aString_rotatex( u"rotatex" );
+    static constexpr OUStringLiteral aString_rotatey( u"rotatey" );
+    static constexpr OUStringLiteral aString_rotatez( u"rotatez" );
+    static constexpr OUStringLiteral aString_scale( u"scale" );
+    static constexpr OUStringLiteral aString_translate( u"translate" );
+    static constexpr OUStringLiteral aString_matrix( u"matrix" );
 
     sal_Int32 nPos(0);
 
diff --git a/xmloff/source/draw/ximppage.cxx b/xmloff/source/draw/ximppage.cxx
index 117942c72f0b..c97be226bd3e 100644
--- a/xmloff/source/draw/ximppage.cxx
+++ b/xmloff/source/draw/ximppage.cxx
@@ -286,7 +286,7 @@ void SdXMLGenericPageContext::endFastElement(sal_Int32 )
 
             if( !maUseHeaderDeclName.isEmpty() )
             {
-                static const OUStringLiteral aStrHeaderTextProp( u"HeaderText" );
+                static constexpr OUStringLiteral aStrHeaderTextProp( u"HeaderText" );
                 if( xInfo->hasPropertyByName( aStrHeaderTextProp ) )
                     xSet->setPropertyValue( aStrHeaderTextProp,
                                             Any( GetSdImport().GetHeaderDecl( maUseHeaderDeclName ) ) );
@@ -294,7 +294,7 @@ void SdXMLGenericPageContext::endFastElement(sal_Int32 )
 
             if( !maUseFooterDeclName.isEmpty() )
             {
-                static const OUStringLiteral aStrFooterTextProp( u"FooterText" );
+                static constexpr OUStringLiteral aStrFooterTextProp( u"FooterText" );
                 if( xInfo->hasPropertyByName( aStrFooterTextProp ) )
                     xSet->setPropertyValue( aStrFooterTextProp,
                                         Any( GetSdImport().GetFooterDecl( maUseFooterDeclName ) ) );
@@ -302,7 +302,7 @@ void SdXMLGenericPageContext::endFastElement(sal_Int32 )
 
             if( !maUseDateTimeDeclName.isEmpty() )
             {
-                static const OUStringLiteral aStrDateTimeTextProp( u"DateTimeText" );
+                static constexpr OUStringLiteral aStrDateTimeTextProp( u"DateTimeText" );
                 if( xInfo->hasPropertyByName( aStrDateTimeTextProp ) )
                 {
                     bool bFixed;
@@ -369,7 +369,7 @@ void SdXMLGenericPageContext::SetStyle( OUString const & rStyleName )
                     Reference< beans::XPropertySet > xPropSet( xPropSet1 );
                     Reference< beans::XPropertySet > xBackgroundSet;
 
-                    static const OUStringLiteral aBackground(u"Background");
+                    static constexpr OUStringLiteral aBackground(u"Background");
                     if( xPropSet1->getPropertySetInfo()->hasPropertyByName( aBackground ) )
                     {
                         Reference< beans::XPropertySetInfo > xInfo( xPropSet1->getPropertySetInfo() );
diff --git a/xmloff/source/draw/ximpshap.cxx b/xmloff/source/draw/ximpshap.cxx
index 5e965eba5aaa..c64a80b756a1 100644
--- a/xmloff/source/draw/ximpshap.cxx
+++ b/xmloff/source/draw/ximpshap.cxx
@@ -2195,7 +2195,7 @@ void SdXMLPageShapeContext::startFastElement (sal_Int32 nElement,
     if(xPropSet.is())
     {
         uno::Reference< beans::XPropertySetInfo > xPropSetInfo( xPropSet->getPropertySetInfo() );
-        static const OUStringLiteral aPageNumberStr(u"PageNumber");
+        static constexpr OUStringLiteral aPageNumberStr(u"PageNumber");
         if( xPropSetInfo.is() && xPropSetInfo->hasPropertyByName(aPageNumberStr))
             xPropSet->setPropertyValue(aPageNumberStr, uno::Any( mnPageNumber ));
     }
@@ -2627,7 +2627,7 @@ void SdXMLObjectShapeContext::startFastElement (sal_Int32 /*nElement*/,
 
             if ( GetImport().IsPackageURL( maHref ) )
             {
-                static const OUStringLiteral  sURL( u"vnd.sun.star.EmbeddedObject:" );
+                static constexpr OUStringLiteral  sURL( u"vnd.sun.star.EmbeddedObject:" );
 
                 if ( aPersistName.startsWith( sURL ) )
                     aPersistName = aPersistName.copy( sURL.getLength() );
@@ -2675,7 +2675,7 @@ void SdXMLObjectShapeContext::endFastElement(sal_Int32 nElement)
     if( mxBase64Stream.is() )
     {
         OUString aPersistName( GetImport().ResolveEmbeddedObjectURLFromBase64() );
-        static const OUStringLiteral  sURL( u"vnd.sun.star.EmbeddedObject:" );
+        static constexpr OUStringLiteral  sURL( u"vnd.sun.star.EmbeddedObject:" );
 
         aPersistName = aPersistName.copy( sURL.getLength() );
 
@@ -2991,7 +2991,7 @@ void SdXMLPluginShapeContext::endFastElement(sal_Int32 nElement)
     {
         if ( maSize.Width && maSize.Height )
         {
-            static const OUStringLiteral sVisibleArea(  u"VisibleArea"  );
+            static constexpr OUStringLiteral sVisibleArea(  u"VisibleArea"  );
             uno::Reference< beans::XPropertySetInfo > aXPropSetInfo( xProps->getPropertySetInfo() );
             if ( !aXPropSetInfo.is() || aXPropSetInfo->hasPropertyByName( sVisibleArea ) )
             {
@@ -3671,7 +3671,7 @@ void SdXMLCustomShapeContext::endFastElement(sal_Int32 nElement)
 
         if (aScale.getX() < 0.0)
         {
-            static const OUStringLiteral sName(u"MirroredX");
+            static constexpr OUStringLiteral sName(u"MirroredX");
             //fdo#84043 Merge, if property exists, otherwise append it
             auto aI = std::find_if(maCustomShapeGeometry.begin(), maCustomShapeGeometry.end(),
                 [](beans::PropertyValue& rValue) { return rValue.Name == sName; });
@@ -3697,7 +3697,7 @@ void SdXMLCustomShapeContext::endFastElement(sal_Int32 nElement)
 
         if (aScale.getY() < 0.0)
         {
-            static const OUStringLiteral sName(u"MirroredY");
+            static constexpr OUStringLiteral sName(u"MirroredY");
             //fdo#84043 Merge, if property exists, otherwise append it
             auto aI = std::find_if(maCustomShapeGeometry.begin(), maCustomShapeGeometry.end(),
                 [](beans::PropertyValue& rValue) { return rValue.Name == sName; });
diff --git a/xmloff/source/meta/xmlmetai.cxx b/xmloff/source/meta/xmlmetai.cxx
index 6f75963056b2..e03b87662c1e 100644
--- a/xmloff/source/meta/xmlmetai.cxx
+++ b/xmloff/source/meta/xmlmetai.cxx
@@ -245,7 +245,7 @@ void SvXMLMetaDocumentContext::setBuildId(std::u16string_view i_rBuildId, const
             {
                 OUStringBuffer sBuffer(
                     i_rBuildId.substr( nBegin+1, nEnd-nBegin-1 ) );
-                static const OUStringLiteral sBuildCompare(
+                static constexpr OUStringLiteral sBuildCompare(
                      u"$Build-"  );
                 nBegin = i_rBuildId.find( sBuildCompare, nEnd );
                 if ( nBegin != std::u16string_view::npos )
@@ -305,7 +305,7 @@ void SvXMLMetaDocumentContext::setBuildId(std::u16string_view i_rBuildId, const
     {
         if( xImportInfo.is() )
         {
-            static const OUStringLiteral aPropName(u"BuildId");
+            static constexpr OUStringLiteral aPropName(u"BuildId");
             uno::Reference< beans::XPropertySetInfo > xSetInfo(
                 xImportInfo->getPropertySetInfo());
             if( xSetInfo.is() && xSetInfo->hasPropertyByName( aPropName ) )
diff --git a/xmloff/source/style/XMLPageExport.cxx b/xmloff/source/style/XMLPageExport.cxx
index a428cdf4c546..41f212901feb 100644
--- a/xmloff/source/style/XMLPageExport.cxx
+++ b/xmloff/source/style/XMLPageExport.cxx
@@ -215,7 +215,7 @@ XMLPageExport::XMLPageExport(SvXMLExport & rExp)
                 "getStyleFamilies() from XModel failed for export!" );
     if( xFamilies.is() )
     {
-        static const OUStringLiteral aPageStyleName(u"PageStyles");
+        static constexpr OUStringLiteral aPageStyleName(u"PageStyles");
 
         if( xFamilies->hasByName( aPageStyleName ) )
         {
diff --git a/xmloff/source/style/xmlnume.cxx b/xmloff/source/style/xmlnume.cxx
index 8280ce2f47be..4c00fab10e96 100644
--- a/xmloff/source/style/xmlnume.cxx
+++ b/xmloff/source/style/xmlnume.cxx
@@ -798,7 +798,7 @@ void SvxXMLNumRuleExport::exportStyles( bool bUsed, bool bExportChapterNumbering
     if( !xFamilies.is() )
         return;
 
-    static const OUStringLiteral aNumberStyleName( u"NumberingStyles" );
+    static constexpr OUStringLiteral aNumberStyleName( u"NumberingStyles" );
 
     Reference< XIndexAccess > xStyles;
     if( !xFamilies->hasByName( aNumberStyleName ) )
diff --git a/xmloff/source/table/XMLTableExport.cxx b/xmloff/source/table/XMLTableExport.cxx
index 3bc2adba5cee..fe6613836bca 100644
--- a/xmloff/source/table/XMLTableExport.cxx
+++ b/xmloff/source/table/XMLTableExport.cxx
@@ -712,7 +712,7 @@ void XMLCellStyleExport::exportStyleAttributes(const Reference<XStyle>& rStyle)
         return;
 
     Reference<XPropertySetInfo> xPropSetInfo(xPropSet->getPropertySetInfo());
-    static const OUStringLiteral sNumberFormat(u"NumberFormat");
+    static constexpr OUStringLiteral sNumberFormat(u"NumberFormat");
     if (xPropSetInfo->hasPropertyByName(sNumberFormat))
     {
         Reference<XPropertyState> xPropState(xPropSet, UNO_QUERY);
diff --git a/xmloff/source/text/XMLSectionExport.cxx b/xmloff/source/text/XMLSectionExport.cxx
index cba9da2a7293..ceea38316150 100644
--- a/xmloff/source/text/XMLSectionExport.cxx
+++ b/xmloff/source/text/XMLSectionExport.cxx
@@ -1588,7 +1588,7 @@ void XMLSectionExport::ExportBibliographyConfiguration(SvXMLExport& rExport)
     if ( !xTextFieldsSupp.is() )
         return;
 
-    static const OUStringLiteral sFieldMaster_Bibliography(u"com.sun.star.text.FieldMaster.Bibliography");
+    static constexpr OUStringLiteral sFieldMaster_Bibliography(u"com.sun.star.text.FieldMaster.Bibliography");
 
     // get bibliography field master
     Reference<XNameAccess> xMasters =
diff --git a/xmloff/source/text/XMLTextFrameContext.cxx b/xmloff/source/text/XMLTextFrameContext.cxx
index 8d0bac4964dc..2df8234dfa0d 100644
--- a/xmloff/source/text/XMLTextFrameContext.cxx
+++ b/xmloff/source/text/XMLTextFrameContext.cxx
@@ -307,14 +307,14 @@ XMLTextFrameContourContext_Impl::XMLTextFrameContourContext_Impl(
         xPropSet->setPropertyValue( sContourPolyPolygon, Any(aPointSequenceSequence) );
     }
 
-    static const OUStringLiteral sIsPixelContour(u"IsPixelContour");
+    static constexpr OUStringLiteral sIsPixelContour(u"IsPixelContour");
 
     if( xPropSetInfo->hasPropertyByName( sIsPixelContour ) )
     {
         xPropSet->setPropertyValue( sIsPixelContour, Any(bPixelWidth) );
     }
 
-    static const OUStringLiteral sIsAutomaticContour(u"IsAutomaticContour");
+    static constexpr OUStringLiteral sIsAutomaticContour(u"IsAutomaticContour");
 
     if( xPropSetInfo->hasPropertyByName( sIsAutomaticContour ) )
     {
diff --git a/xmloff/source/text/XMLTextHeaderFooterContext.cxx b/xmloff/source/text/XMLTextHeaderFooterContext.cxx
index 9c176c7f4f47..db79c6933273 100644
--- a/xmloff/source/text/XMLTextHeaderFooterContext.cxx
+++ b/xmloff/source/text/XMLTextHeaderFooterContext.cxx
@@ -69,7 +69,7 @@ XMLTextHeaderFooterContext::XMLTextHeaderFooterContext( SvXMLImport& rImport,
         }
         if (bFirst)
         {
-            static const OUStringLiteral sShareContentFirst( u"FirstIsShared" );
+            static constexpr OUStringLiteral sShareContentFirst( u"FirstIsShared" );
             aAny = xPropSet->getPropertyValue( sShareContentFirst );
             bool bSharedFirst = bool();
             if (!(aAny >>= bSharedFirst))
diff --git a/xmloff/source/text/XMLTextListAutoStylePool.cxx b/xmloff/source/text/XMLTextListAutoStylePool.cxx
index 5f138010ec06..1e62a66e6846 100644
--- a/xmloff/source/text/XMLTextListAutoStylePool.cxx
+++ b/xmloff/source/text/XMLTextListAutoStylePool.cxx
@@ -166,7 +166,7 @@ XMLTextListAutoStylePool::XMLTextListAutoStylePool( SvXMLExport& rExp ) :
         xFamilies = xFamiliesSupp->getStyleFamilies();
 
     Reference<XIndexAccess> xStyles;
-    static const OUStringLiteral aNumberStyleName(u"NumberingStyles");
+    static constexpr OUStringLiteral aNumberStyleName(u"NumberingStyles");
     if (xFamilies.is() && xFamilies->hasByName(aNumberStyleName))
         xFamilies->getByName(aNumberStyleName) >>= xStyles;
 
diff --git a/xmloff/source/text/txtimp.cxx b/xmloff/source/text/txtimp.cxx
index b31c2b6ab99b..0a4a18ad10d3 100644
--- a/xmloff/source/text/txtimp.cxx
+++ b/xmloff/source/text/txtimp.cxx
@@ -456,42 +456,42 @@ XMLTextImportHelper::XMLTextImportHelper(
     {
         Reference< XNameAccess > xFamilies(xFamiliesSupp->getStyleFamilies());
 
-        static const OUStringLiteral aParaStyles(u"ParagraphStyles");
+        static constexpr OUStringLiteral aParaStyles(u"ParagraphStyles");
         if( xFamilies->hasByName( aParaStyles ) )
         {
             m_xImpl->m_xParaStyles.set(xFamilies->getByName(aParaStyles),
                 UNO_QUERY);
         }
 
-        static const OUStringLiteral aCharStyles(u"CharacterStyles");
+        static constexpr OUStringLiteral aCharStyles(u"CharacterStyles");
         if( xFamilies->hasByName( aCharStyles ) )
         {
             m_xImpl->m_xTextStyles.set(xFamilies->getByName(aCharStyles),
                 UNO_QUERY);
         }
 
-        static const OUStringLiteral aNumStyles(u"NumberingStyles");
+        static constexpr OUStringLiteral aNumStyles(u"NumberingStyles");
         if( xFamilies->hasByName( aNumStyles ) )
         {
             m_xImpl->m_xNumStyles.set(xFamilies->getByName(aNumStyles),
                 UNO_QUERY);
         }
 
-        static const OUStringLiteral aFrameStyles(u"FrameStyles");
+        static constexpr OUStringLiteral aFrameStyles(u"FrameStyles");
         if( xFamilies->hasByName( aFrameStyles ) )
         {
             m_xImpl->m_xFrameStyles.set(xFamilies->getByName(aFrameStyles),
                 UNO_QUERY);
         }
 
-        static const OUStringLiteral aPageStyles(u"PageStyles");
+        static constexpr OUStringLiteral aPageStyles(u"PageStyles");
         if( xFamilies->hasByName( aPageStyles ) )
         {
             m_xImpl->m_xPageStyles.set(xFamilies->getByName(aPageStyles),
                 UNO_QUERY);
         }
 
-        static const OUStringLiteral aCellStyles(u"CellStyles");
+        static constexpr OUStringLiteral aCellStyles(u"CellStyles");
         if( xFamilies->hasByName( aCellStyles ) )
         {
             m_xImpl->m_xCellStyles.set(xFamilies->getByName(aCellStyles),
diff --git a/xmloff/source/text/txtparae.cxx b/xmloff/source/text/txtparae.cxx
index 6407e0248626..3591e4c41c02 100644
--- a/xmloff/source/text/txtparae.cxx
+++ b/xmloff/source/text/txtparae.cxx
@@ -525,8 +525,8 @@ void BoundFrames::Fill(const filter_t& rFilter)
     const Reference< XEnumeration > xEnum = m_xEnumAccess->createEnumeration();
     if(!xEnum.is())
         return;
-    static const OUStringLiteral our_sAnchorType(u"AnchorType");
-    static const OUStringLiteral our_sAnchorFrame(u"AnchorFrame");
+    static constexpr OUStringLiteral our_sAnchorType(u"AnchorType");
+    static constexpr OUStringLiteral our_sAnchorFrame(u"AnchorFrame");
     while(xEnum->hasMoreElements())
     {
         Reference<XPropertySet> xPropSet(xEnum->nextElement(), UNO_QUERY);