[Libreoffice-commits] core.git: compilerplugins/clang editeng/source filter/source framework/source include/uno reportdesign/source sal/qa sc/source sdext/source sd/source sfx2/source stoc/source svx/source sw/qa sw/source tools/qa tools/source vcl/headless vcl/source vcl/unx writerfilter/source xmloff/source

Noel Grandin (via logerrit) logerrit at kemper.freedesktop.org
Tue Apr 30 06:44:59 UTC 2019


 compilerplugins/clang/stringconstant.cxx                               |  105 +++++-----
 compilerplugins/clang/test/stringconstant.cxx                          |   16 +
 editeng/source/misc/swafopt.cxx                                        |    3 
 filter/source/msfilter/eschesdo.cxx                                    |    4 
 filter/source/pdf/pdfexport.cxx                                        |    4 
 framework/source/fwe/classes/addonsoptions.cxx                         |    2 
 include/uno/mapping.hxx                                                |    8 
 reportdesign/source/core/api/ReportComponent.cxx                       |    6 
 reportdesign/source/core/api/ReportDefinition.cxx                      |    6 
 reportdesign/source/ui/report/dlgedfac.cxx                             |    2 
 sal/qa/rtl/oustringbuffer/test_oustringbuffer_tostring.cxx             |    2 
 sc/source/core/tool/interpr5.cxx                                       |    4 
 sc/source/filter/excel/excform.cxx                                     |    4 
 sc/source/filter/excel/excform8.cxx                                    |    4 
 sc/source/ui/app/scmod.cxx                                             |    2 
 sd/source/core/stlpool.cxx                                             |    2 
 sdext/source/presenter/PresenterNotesView.cxx                          |    2 
 sdext/source/presenter/PresenterScrollBar.cxx                          |    2 
 sdext/source/presenter/PresenterSlidePreview.cxx                       |    2 
 sdext/source/presenter/PresenterWindowManager.cxx                      |    2 
 sfx2/source/control/unoctitm.cxx                                       |    4 
 stoc/source/corereflection/crefl.cxx                                   |    8 
 svx/source/unodialogs/textconversiondlgs/chinese_dictionarydialog.cxx  |    4 
 svx/source/unodialogs/textconversiondlgs/chinese_translationdialog.cxx |    8 
 sw/qa/extras/uiwriter/uiwriter.cxx                                     |    4 
 sw/source/core/doc/DocumentTimerManager.cxx                            |    3 
 sw/source/core/swg/SwXMLTextBlocks1.cxx                                |    2 
 sw/source/filter/ww8/rtfexport.cxx                                     |    2 
 sw/source/uibase/app/appopt.cxx                                        |    6 
 tools/qa/cppunit/test_config.cxx                                       |   18 -
 tools/source/fsys/urlobj.cxx                                           |    3 
 vcl/headless/svpprn.cxx                                                |    4 
 vcl/source/app/settings.cxx                                            |    2 
 vcl/source/filter/GraphicNativeTransform.cxx                           |    4 
 vcl/source/gdi/print3.cxx                                              |   38 +--
 vcl/source/treelist/treelistbox.cxx                                    |    2 
 vcl/source/window/builder.cxx                                          |   24 +-
 vcl/source/window/settings.cxx                                         |    2 
 vcl/source/window/toolbox2.cxx                                         |    4 
 vcl/unx/generic/print/printerjob.cxx                                   |    2 
 vcl/unx/generic/print/prtsetup.cxx                                     |   12 -
 vcl/unx/generic/printer/jobdata.cxx                                    |   12 -
 vcl/unx/generic/printer/ppdparser.cxx                                  |   38 +--
 vcl/unx/generic/printer/printerinfomanager.cxx                         |    6 
 writerfilter/source/rtftok/rtfdispatchdestination.cxx                  |    2 
 xmloff/source/style/xmlnumfi.cxx                                       |    4 
 46 files changed, 210 insertions(+), 190 deletions(-)

New commits:
commit dd8d5e5795358d732a9f7a8af7c35f662321e332
Author:     Noel Grandin <noel.grandin at collabora.co.uk>
AuthorDate: Mon Apr 29 11:18:21 2019 +0200
Commit:     Noel Grandin <noel.grandin at collabora.co.uk>
CommitDate: Tue Apr 30 08:43:51 2019 +0200

    improve loplugin:stringconstant
    
    to find more places we can elide the OUString() constructor at call
    sites
    
    Change-Id: Ie09f3c61f2c4b4959c97dc98ebcbaf7c51d5d713
    Reviewed-on: https://gerrit.libreoffice.org/71514
    Tested-by: Jenkins
    Reviewed-by: Noel Grandin <noel.grandin at collabora.co.uk>

diff --git a/compilerplugins/clang/stringconstant.cxx b/compilerplugins/clang/stringconstant.cxx
index 05cfa03ff711..6a009e510297 100644
--- a/compilerplugins/clang/stringconstant.cxx
+++ b/compilerplugins/clang/stringconstant.cxx
@@ -58,7 +58,19 @@ bool isLhsOfAssignment(FunctionDecl const * decl, unsigned parameter) {
         || (oo >= OO_PlusEqual && oo <= OO_GreaterGreaterEqual);
 }
 
-bool hasOverloads(FunctionDecl const * decl, unsigned arguments) {
+bool typecheckIsOUStringParam(const clang::QualType t) {
+    return bool(loplugin::TypeCheck(t).NotSubstTemplateTypeParmType()
+            .LvalueReference().Const().NotSubstTemplateTypeParmType()
+            .Class("OUString").Namespace("rtl").GlobalNamespace());
+}
+
+bool typecheckIsOStringParam(const clang::QualType t) {
+    return bool(loplugin::TypeCheck(t).NotSubstTemplateTypeParmType()
+            .LvalueReference().Const().NotSubstTemplateTypeParmType()
+            .Class("OString").Namespace("rtl").GlobalNamespace());
+}
+
+bool hasOverloads(FunctionDecl const * decl, unsigned arguments, unsigned paramIndex) {
     int n = 0;
     auto ctx = decl->getDeclContext();
     if (ctx->getDeclKind() == Decl::LinkageSpec) {
@@ -67,17 +79,32 @@ bool hasOverloads(FunctionDecl const * decl, unsigned arguments) {
     auto res = ctx->lookup(decl->getDeclName());
     for (auto d = res.begin(); d != res.end(); ++d) {
         FunctionDecl const * f = dyn_cast<FunctionDecl>(*d);
-        if (f != nullptr && f->getMinRequiredArguments() <= arguments
-            && f->getNumParams() >= arguments)
-        {
-            auto consDecl = dyn_cast<CXXConstructorDecl>(f);
-            if (consDecl && consDecl->isCopyOrMoveConstructor()) {
-                continue;
-            }
-            ++n;
-            if (n == 2) {
-                return true;
-            }
+        if (f == nullptr || f->getMinRequiredArguments() > arguments
+            || f->getNumParams() < arguments) {
+            continue;
+        }
+        auto consDecl = dyn_cast<CXXConstructorDecl>(f);
+        if (consDecl && consDecl->isCopyOrMoveConstructor()) {
+            continue;
+        }
+        // Deleted stuff like in ORowSetValueDecorator in connectivity can cause
+        // trouble.
+        if (consDecl && consDecl->isDeleted()) {
+            return true;
+        }
+        if (paramIndex >= f->getNumParams()) {
+            continue;
+        }
+        auto t = f->getParamDecl(paramIndex)->getType();
+        // bool because 'const char *' converts to bool
+        if (!typecheckIsOUStringParam(t) && !typecheckIsOStringParam(t)
+            && !loplugin::TypeCheck(t).Pointer().Const().Char()
+            && !loplugin::TypeCheck(t).AnyBoolean()) {
+            continue;
+        }
+        ++n;
+        if (n == 2) {
+            return true;
         }
     }
     return false;
@@ -269,29 +296,6 @@ bool StringConstant::VisitCallExpr(CallExpr const * expr) {
     if (fdecl == nullptr) {
         return true;
     }
-    for (unsigned i = 0; i != fdecl->getNumParams(); ++i) {
-        auto t = fdecl->getParamDecl(i)->getType();
-        if (loplugin::TypeCheck(t).NotSubstTemplateTypeParmType()
-            .LvalueReference().Const().NotSubstTemplateTypeParmType()
-            .Class("OUString").Namespace("rtl").GlobalNamespace())
-        {
-            if (!(isLhsOfAssignment(fdecl, i)
-                  || hasOverloads(fdecl, expr->getNumArgs())))
-            {
-                handleOUStringCtor(expr, i, fdecl, true);
-            }
-        }
-        if (loplugin::TypeCheck(t).NotSubstTemplateTypeParmType()
-            .LvalueReference().Const().NotSubstTemplateTypeParmType()
-            .Class("OString").Namespace("rtl").GlobalNamespace())
-        {
-            if (!(isLhsOfAssignment(fdecl, i)
-                  || hasOverloads(fdecl, expr->getNumArgs())))
-            {
-                handleOStringCtor(expr, i, fdecl, true);
-            }
-        }
-    }
     loplugin::DeclCheck dc(fdecl);
     //TODO: u.compareToAscii("foo") -> u.???("foo")
     //TODO: u.compareToIgnoreAsciiCaseAscii("foo") -> u.???("foo")
@@ -773,6 +777,25 @@ bool StringConstant::VisitCallExpr(CallExpr const * expr) {
         }
         return true;
     }
+    for (unsigned i = 0; i != fdecl->getNumParams(); ++i) {
+        auto t = fdecl->getParamDecl(i)->getType();
+        if (typecheckIsOUStringParam(t))
+        {
+            if (!(isLhsOfAssignment(fdecl, i)
+                  || hasOverloads(fdecl, expr->getNumArgs(), i)))
+            {
+                handleOUStringCtor(expr, i, fdecl, true);
+            }
+        }
+        if (typecheckIsOStringParam(t))
+        {
+            if (!(isLhsOfAssignment(fdecl, i)
+                  || hasOverloads(fdecl, expr->getNumArgs(), i)))
+            {
+                handleOStringCtor(expr, i, fdecl, true);
+            }
+        }
+    }
     return true;
 }
 
@@ -1176,27 +1199,23 @@ bool StringConstant::VisitCXXConstructExpr(CXXConstructExpr const * expr) {
     auto consDecl = expr->getConstructor();
     for (unsigned i = 0; i != consDecl->getNumParams(); ++i) {
         auto t = consDecl->getParamDecl(i)->getType();
-        if (loplugin::TypeCheck(t).NotSubstTemplateTypeParmType()
-            .LvalueReference().Const().NotSubstTemplateTypeParmType()
-            .Class("OUString").Namespace("rtl").GlobalNamespace())
+        if (typecheckIsOUStringParam(t))
         {
             auto argExpr = expr->getArg(i);
             if (argExpr && i <= consDecl->getNumParams())
             {
-                if (!hasOverloads(consDecl, expr->getNumArgs()))
+                if (!hasOverloads(consDecl, expr->getNumArgs(), i))
                 {
                     handleOUStringCtor(expr, argExpr, consDecl, true);
                 }
             }
         }
-        if (loplugin::TypeCheck(t).NotSubstTemplateTypeParmType()
-            .LvalueReference().Const().NotSubstTemplateTypeParmType()
-            .Class("OString").Namespace("rtl").GlobalNamespace())
+        if (typecheckIsOStringParam(t))
         {
             auto argExpr = expr->getArg(i);
             if (argExpr && i <= consDecl->getNumParams())
             {
-                if (!hasOverloads(consDecl, expr->getNumArgs()))
+                if (!hasOverloads(consDecl, expr->getNumArgs(), i))
                 {
                     handleOStringCtor(expr, argExpr, consDecl, true);
                 }
diff --git a/compilerplugins/clang/test/stringconstant.cxx b/compilerplugins/clang/test/stringconstant.cxx
index 49ae3b68d035..1eda24580ab2 100644
--- a/compilerplugins/clang/test/stringconstant.cxx
+++ b/compilerplugins/clang/test/stringconstant.cxx
@@ -17,6 +17,7 @@
 extern void foo(OUString const &);
 
 struct Foo {
+    Foo(int, const OUString &) {}
     Foo(OUString const &, int) {}
     Foo(OUString const &) {}
     void foo(OUString const &) const {}
@@ -28,6 +29,11 @@ struct Foo2 {
     void foo(OString const &) const {}
 };
 
+struct NegativeFoo {
+    NegativeFoo(const OString&, const OString& ) {}
+    NegativeFoo(const OString&, const OUString& ) {}
+};
+
 int main() {
     char const s1[] = "foo";
     char const * const s2 = "foo";
@@ -67,9 +73,15 @@ int main() {
     (void)aFoo;
     Foo aFoo2(OUString("xxx")); // expected-error {{in call of 'Foo::Foo', replace 'OUString' constructed from a string literal directly with the string literal}}
     aFoo2.foo(OUString("xxx")); // expected-error {{in call of 'Foo::foo', replace 'OUString' constructed from a string literal directly with the string literal}}
+    Foo aFoo3(1, OUString("xxx")); // expected-error {{in call of 'Foo::Foo', replace 'OUString' constructed from a string literal directly with the string literal}}
+    (void)aFoo3;
+
+    Foo2 aFoo4(OString("xxx")); // expected-error {{in call of 'Foo2::Foo2', replace 'OUString' constructed from a string literal directly with the string literal}}
+    aFoo4.foo(OString("xxx")); // expected-error {{in call of 'Foo2::foo', replace 'OUString' constructed from a string literal directly with the string literal}}
 
-    Foo2 aFoo3(OString("xxx")); // expected-error {{in call of 'Foo2::Foo2', replace 'OUString' constructed from a string literal directly with the string literal}}
-    aFoo3.foo(OString("xxx")); // expected-error {{in call of 'Foo2::foo', replace 'OUString' constructed from a string literal directly with the string literal}}
+    // no warning expected
+    NegativeFoo aNegativeFoo(OString("xxx"), OUString("1"));
+    (void)aNegativeFoo;
 
     (void) OUString("xxx", 3, RTL_TEXTENCODING_ASCII_US); // expected-error {{simplify construction of 'OUString' with string constant argument [loplugin:stringconstant]}}
     (void) OUString("xxx", 3, RTL_TEXTENCODING_ISO_8859_1); // expected-error {{suspicious 'rtl::OUString' constructor with text encoding 12 but plain ASCII content; use 'RTL_TEXTENCODING_ASCII_US' instead [loplugin:stringconstant]}}
diff --git a/editeng/source/misc/swafopt.cxx b/editeng/source/misc/swafopt.cxx
index b68dcce37c3c..751b3e575a53 100644
--- a/editeng/source/misc/swafopt.cxx
+++ b/editeng/source/misc/swafopt.cxx
@@ -22,8 +22,7 @@
 #include <vcl/keycodes.hxx>
 
 SvxSwAutoFormatFlags::SvxSwAutoFormatFlags()
-    : aBulletFont( OUString("StarSymbol"),
-                    Size( 0, 14 ) )
+    : aBulletFont( "StarSymbol", Size( 0, 14 ) )
 {
     bAutoCorrect =
     bCapitalStartSentence =
diff --git a/filter/source/msfilter/eschesdo.cxx b/filter/source/msfilter/eschesdo.cxx
index aac095bbe373..8621fd9f6198 100644
--- a/filter/source/msfilter/eschesdo.cxx
+++ b/filter/source/msfilter/eschesdo.cxx
@@ -219,7 +219,7 @@ sal_uInt32 ImplEESdrWriter::ImplWriteShape( ImplEESdrObject& rObj,
             }
             break;
         }
-        rObj.SetAngle( rObj.ImplGetInt32PropertyValue( OUString( "RotateAngle" ) ));
+        rObj.SetAngle( rObj.ImplGetInt32PropertyValue( "RotateAngle" ));
 
         if( ( rObj.ImplGetPropertyValue( "IsFontwork" ) &&
             ::cppu::any2bool( rObj.GetUsrAny() ) ) ||
@@ -722,7 +722,7 @@ void ImplEESdrWriter::ImplWriteAdditionalText( ImplEESdrObject& rObj )
         if ( !mpPicStrm )
             mpPicStrm = mpEscherEx->QueryPictureStream();
         EscherPropertyContainer aPropOpt( mpEscherEx->GetGraphicProvider(), mpPicStrm, aRect100thmm );
-        rObj.SetAngle( rObj.ImplGetInt32PropertyValue( OUString( "RotateAngle" )));
+        rObj.SetAngle( rObj.ImplGetInt32PropertyValue( "RotateAngle" ));
         sal_Int32 nAngle = rObj.GetAngle();
         if( rObj.GetType() == "drawing.Line" )
         {
diff --git a/filter/source/pdf/pdfexport.cxx b/filter/source/pdf/pdfexport.cxx
index 42ec1e8f23c6..87d07e7d7be5 100644
--- a/filter/source/pdf/pdfexport.cxx
+++ b/filter/source/pdf/pdfexport.cxx
@@ -1091,7 +1091,7 @@ void PDFExport::ImplExportPage( vcl::PDFWriter& rWriter, vcl::PDFExtOutDevData&
 
 void PDFExport::ImplWriteWatermark( vcl::PDFWriter& rWriter, const Size& rPageSize )
 {
-    vcl::Font aFont( OUString( "Helvetica" ), Size( 0, 3*rPageSize.Height()/4 ) );
+    vcl::Font aFont( "Helvetica", Size( 0, 3*rPageSize.Height()/4 ) );
     aFont.SetItalic( ITALIC_NONE );
     aFont.SetWidthType( WIDTH_NORMAL );
     aFont.SetWeight( WEIGHT_NORMAL );
@@ -1158,7 +1158,7 @@ void PDFExport::ImplWriteWatermark( vcl::PDFWriter& rWriter, const Size& rPageSi
 
 void PDFExport::ImplWriteTiledWatermark( vcl::PDFWriter& rWriter, const Size& rPageSize )
 {
-    vcl::Font aFont( OUString( "Liberation Sans" ), Size( 0, 40 ) );
+    vcl::Font aFont( "Liberation Sans", Size( 0, 40 ) );
     aFont.SetItalic( ITALIC_NONE );
     aFont.SetWidthType( WIDTH_NORMAL );
     aFont.SetWeight( WEIGHT_NORMAL );
diff --git a/framework/source/fwe/classes/addonsoptions.cxx b/framework/source/fwe/classes/addonsoptions.cxx
index b9463e47e69f..59013a750c89 100644
--- a/framework/source/fwe/classes/addonsoptions.cxx
+++ b/framework/source/fwe/classes/addonsoptions.cxx
@@ -60,7 +60,7 @@ using namespace ::com::sun::star;
 #define PROPERTYNAME_CONTEXT                            ADDONSMENUITEM_STRING_CONTEXT
 #define PROPERTYNAME_SUBMENU                            ADDONSMENUITEM_STRING_SUBMENU
 
-#define IMAGES_NODENAME                                 OUString("UserDefinedImages" )
+#define IMAGES_NODENAME                                 "UserDefinedImages"
 
 // The following order is mandatory. Please add properties at the end!
 #define INDEX_URL               0
diff --git a/include/uno/mapping.hxx b/include/uno/mapping.hxx
index 07518b0fcf3c..698733840058 100644
--- a/include/uno/mapping.hxx
+++ b/include/uno/mapping.hxx
@@ -317,9 +317,7 @@ template< class C >
 SAL_DEPRECATED("use uno_Mapping")
 inline bool mapToCpp( Reference< C > * ppRet, uno_Interface * pUnoI )
 {
-    Mapping aMapping(
-        ::rtl::OUString( UNO_LB_UNO ),
-        ::rtl::OUString( CPPU_CURRENT_LANGUAGE_BINDING_NAME ) );
+    Mapping aMapping( UNO_LB_UNO, CPPU_CURRENT_LANGUAGE_BINDING_NAME );
     OSL_ASSERT( aMapping.is() );
     aMapping.mapInterface(
             reinterpret_cast<void **>(ppRet), pUnoI, ::cppu::getTypeFavourUnsigned( ppRet ) );
@@ -341,9 +339,7 @@ template< class C >
 SAL_DEPRECATED("use uno_Mapping")
 inline bool mapToUno( uno_Interface ** ppRet, const Reference< C > & x )
 {
-    Mapping aMapping(
-        ::rtl::OUString( CPPU_CURRENT_LANGUAGE_BINDING_NAME ),
-        ::rtl::OUString( UNO_LB_UNO ) );
+    Mapping aMapping( CPPU_CURRENT_LANGUAGE_BINDING_NAME, UNO_LB_UNO );
     OSL_ASSERT( aMapping.is() );
     aMapping.mapInterface(
             reinterpret_cast<void **>(ppRet), x.get(), ::cppu::getTypeFavourUnsigned( &x ) );
diff --git a/reportdesign/source/core/api/ReportComponent.cxx b/reportdesign/source/core/api/ReportComponent.cxx
index 189123e76ad0..6c75433e3349 100644
--- a/reportdesign/source/core/api/ReportComponent.cxx
+++ b/reportdesign/source/core/api/ReportComponent.cxx
@@ -84,11 +84,11 @@ OFormatProperties::OFormatProperties()
         SvtLinguConfig aLinguConfig;
         using namespace ::com::sun::star::i18n::ScriptType;
 
-        aLinguConfig.GetProperty(OUString("DefaultLocale")) >>= aCharLocale;
+        aLinguConfig.GetProperty("DefaultLocale") >>= aCharLocale;
         LanguageType eCurLang = MsLangId::resolveSystemLanguageByScriptType(LanguageTag::convertToLanguageType( aCharLocale, false), LATIN);
-        aLinguConfig.GetProperty(OUString("DefaultLocale_CJK"))  >>= aCharLocaleAsian;
+        aLinguConfig.GetProperty("DefaultLocale_CJK")  >>= aCharLocaleAsian;
         LanguageType eCurLangCJK = MsLangId::resolveSystemLanguageByScriptType(LanguageTag::convertToLanguageType( aCharLocaleAsian, false), ASIAN);
-        aLinguConfig.GetProperty(OUString("DefaultLocale_CTL"))  >>= aCharLocaleComplex;
+        aLinguConfig.GetProperty("DefaultLocale_CTL")  >>= aCharLocaleComplex;
         LanguageType eCurLangCTL = MsLangId::resolveSystemLanguageByScriptType(LanguageTag::convertToLanguageType( aCharLocaleComplex, false), COMPLEX);
 
         vcl::Font aLatin,aCJK,aCTL;
diff --git a/reportdesign/source/core/api/ReportDefinition.cxx b/reportdesign/source/core/api/ReportDefinition.cxx
index 7aad736fa96d..591c919595d4 100644
--- a/reportdesign/source/core/api/ReportDefinition.cxx
+++ b/reportdesign/source/core/api/ReportDefinition.cxx
@@ -200,9 +200,9 @@ static void lcl_setModelReadOnly(const uno::Reference< embed::XStorage >& _xStor
 }
 static void lcl_stripLoadArguments( utl::MediaDescriptor& _rDescriptor, uno::Sequence< beans::PropertyValue >& _rArgs )
 {
-    _rDescriptor.erase( OUString( "StatusIndicator" ) );
-    _rDescriptor.erase( OUString( "InteractionHandler" ) );
-    _rDescriptor.erase( OUString( "Model" ) );
+    _rDescriptor.erase( "StatusIndicator" );
+    _rDescriptor.erase( "InteractionHandler" );
+    _rDescriptor.erase( "Model" );
     _rDescriptor >> _rArgs;
 }
 
diff --git a/reportdesign/source/ui/report/dlgedfac.cxx b/reportdesign/source/ui/report/dlgedfac.cxx
index 4a416838ebda..22af5dfb1f33 100644
--- a/reportdesign/source/ui/report/dlgedfac.cxx
+++ b/reportdesign/source/ui/report/dlgedfac.cxx
@@ -88,7 +88,7 @@ IMPL_STATIC_LINK(
                 pNewObj = new OOle2Obj(aParams.rSdrModel, SERVICE_REPORTDEFINITION, OBJ_DLG_SUBREPORT);
                 break;
             case OBJ_OLE2:
-                pNewObj = new OOle2Obj(aParams.rSdrModel, OUString("com.sun.star.chart2.ChartDocument"),OBJ_OLE2);
+                pNewObj = new OOle2Obj(aParams.rSdrModel, "com.sun.star.chart2.ChartDocument", OBJ_OLE2);
                 break;
             default:
                 OSL_FAIL("Unknown object id");
diff --git a/sal/qa/rtl/oustringbuffer/test_oustringbuffer_tostring.cxx b/sal/qa/rtl/oustringbuffer/test_oustringbuffer_tostring.cxx
index c50f9699ad49..139b87bd4295 100644
--- a/sal/qa/rtl/oustringbuffer/test_oustringbuffer_tostring.cxx
+++ b/sal/qa/rtl/oustringbuffer/test_oustringbuffer_tostring.cxx
@@ -40,7 +40,7 @@ private:
 CPPUNIT_TEST_SUITE_REGISTRATION(test::oustringbuffer::ToString);
 
 void test::oustringbuffer::ToString::testToString() {
-    OUStringBuffer sb(OUString("test string"));
+    OUStringBuffer sb("test string");
     OUString str = sb.toString();
     CPPUNIT_ASSERT_EQUAL( OUString("test string"), str );
     // returned OUString must be independent from sb
diff --git a/sc/source/core/tool/interpr5.cxx b/sc/source/core/tool/interpr5.cxx
index 7a02ef58077a..504233a997a4 100644
--- a/sc/source/core/tool/interpr5.cxx
+++ b/sc/source/core/tool/interpr5.cxx
@@ -3200,9 +3200,9 @@ void ScInterpreter::ScInfo()
         OUString aStr = GetString().getString();
         ScCellKeywordTranslator::transKeyword(aStr, ScGlobal::GetLocale(), ocInfo);
         if( aStr == "SYSTEM" )
-            PushString( OUString( SC_INFO_OSVERSION ) );
+            PushString( SC_INFO_OSVERSION );
         else if( aStr == "OSVERSION" )
-            PushString( OUString( "Windows (32-bit) NT 5.01" ) );
+            PushString( "Windows (32-bit) NT 5.01" );
         else if( aStr == "RELEASE" )
             PushString( ::utl::Bootstrap::getBuildIdData( OUString() ) );
         else if( aStr == "NUMFILE" )
diff --git a/sc/source/filter/excel/excform.cxx b/sc/source/filter/excel/excform.cxx
index 6e3d4ed93362..74718130b7b4 100644
--- a/sc/source/filter/excel/excform.cxx
+++ b/sc/source/filter/excel/excform.cxx
@@ -195,7 +195,7 @@ ExcelToSc::~ExcelToSc()
 
 std::unique_ptr<ScTokenArray> ExcelToSc::GetDummy()
 {
-    aPool.Store( OUString("Dummy()") );
+    aPool.Store( "Dummy()" );
     aPool >> aStack;
     return aPool.GetTokenArray( aStack.Get());
 }
@@ -221,7 +221,7 @@ ConvErr ExcelToSc::Convert( std::unique_ptr<ScTokenArray>& pResult, XclImpStream
 
     if( nFormulaLen == 0 )
     {
-        aPool.Store( OUString("-/-") );
+        aPool.Store( "-/-" );
         aPool >> aStack;
         pResult = aPool.GetTokenArray( aStack.Get());
         return ConvErr::OK;
diff --git a/sc/source/filter/excel/excform8.cxx b/sc/source/filter/excel/excform8.cxx
index 1aea200bd1c0..7965c1a55c02 100644
--- a/sc/source/filter/excel/excform8.cxx
+++ b/sc/source/filter/excel/excform8.cxx
@@ -149,7 +149,7 @@ ConvErr ExcelToSc8::Convert( std::unique_ptr<ScTokenArray>& rpTokArray, XclImpSt
 
     if( nFormulaLen == 0 )
     {
-        aPool.Store( OUString( "-/-" ) );
+        aPool.Store( "-/-" );
         aPool >> aStack;
         rpTokArray = aPool.GetTokenArray( aStack.Get());
         return ConvErr::OK;
@@ -1296,7 +1296,7 @@ void ExcelToSc8::ConvertExternName( std::unique_ptr<ScTokenArray>& rpArray, XclI
 
     if (nFormulaLen == 0)
     {
-        aPool.Store(OUString("-/-"));
+        aPool.Store("-/-");
         aPool >> aStack;
         rpArray = aPool.GetTokenArray( aStack.Get());
         return;
diff --git a/sc/source/ui/app/scmod.cxx b/sc/source/ui/app/scmod.cxx
index 082b4e32c929..a1ddebd26de7 100644
--- a/sc/source/ui/app/scmod.cxx
+++ b/sc/source/ui/app/scmod.cxx
@@ -2280,7 +2280,7 @@ void ScModule::SetAutoSpellProperty( bool bSet )
     // loading the linguistic component
     SvtLinguConfig aConfig;
 
-    aConfig.SetProperty( OUString( LINGUPROP_AUTOSPELL ), uno::Any(bSet) );
+    aConfig.SetProperty( LINGUPROP_AUTOSPELL, uno::Any(bSet) );
 }
 
 bool ScModule::HasThesaurusLanguage( LanguageType nLang )
diff --git a/sd/source/core/stlpool.cxx b/sd/source/core/stlpool.cxx
index 29e761897875..e812c68af6b1 100644
--- a/sd/source/core/stlpool.cxx
+++ b/sd/source/core/stlpool.cxx
@@ -1173,7 +1173,7 @@ void SdStyleSheetPool::PutNumBulletItem( SfxStyleSheetBase* pSheet,
 
 vcl::Font SdStyleSheetPool::GetBulletFont()
 {
-    vcl::Font aBulletFont( OUString( "StarSymbol" ), Size(0, 1000) );
+    vcl::Font aBulletFont( "StarSymbol", Size(0, 1000) );
     aBulletFont.SetCharSet(RTL_TEXTENCODING_UNICODE);
     aBulletFont.SetWeight(WEIGHT_NORMAL);
     aBulletFont.SetUnderline(LINESTYLE_NONE);
diff --git a/sdext/source/presenter/PresenterNotesView.cxx b/sdext/source/presenter/PresenterNotesView.cxx
index 436202bd67ce..ca3e362fcc19 100644
--- a/sdext/source/presenter/PresenterNotesView.cxx
+++ b/sdext/source/presenter/PresenterNotesView.cxx
@@ -633,7 +633,7 @@ void PresenterNotesView::ChangeFontSize (const sal_Int32 nSizeChange)
         if (pConfiguration == nullptr || !pConfiguration->IsValid())
             return;
 
-        pConfiguration->GoToChild(OUString("Font"));
+        pConfiguration->GoToChild("Font");
         pConfiguration->SetProperty("Size", Any(static_cast<sal_Int32>(nNewSize+0.5)));
         pConfiguration->CommitChanges();
     }
diff --git a/sdext/source/presenter/PresenterScrollBar.cxx b/sdext/source/presenter/PresenterScrollBar.cxx
index 9be3b86776e2..01b71c3e99cf 100644
--- a/sdext/source/presenter/PresenterScrollBar.cxx
+++ b/sdext/source/presenter/PresenterScrollBar.cxx
@@ -249,7 +249,7 @@ void PresenterScrollBar::SetCanvas (const Reference<css::rendering::XCanvas>& rx
             try
             {
                 mpBitmaps.reset(new PresenterBitmapContainer(
-                    OUString("PresenterScreenSettings/ScrollBar/Bitmaps"),
+                    "PresenterScreenSettings/ScrollBar/Bitmaps",
                     std::shared_ptr<PresenterBitmapContainer>(),
                     mxComponentContext,
                     mxCanvas));
diff --git a/sdext/source/presenter/PresenterSlidePreview.cxx b/sdext/source/presenter/PresenterSlidePreview.cxx
index 1c8d813fa9b5..b81c42660b50 100644
--- a/sdext/source/presenter/PresenterSlidePreview.cxx
+++ b/sdext/source/presenter/PresenterSlidePreview.cxx
@@ -97,7 +97,7 @@ PresenterSlidePreview::PresenterSlidePreview (
                 rxContext),
             UNO_QUERY);
     mpBitmaps.reset(new PresenterBitmapContainer(
-            OUString("PresenterScreenSettings/ScrollBar/Bitmaps"),
+            "PresenterScreenSettings/ScrollBar/Bitmaps",
             std::shared_ptr<PresenterBitmapContainer>(),
             rxContext,
             mxCanvas));
diff --git a/sdext/source/presenter/PresenterWindowManager.cxx b/sdext/source/presenter/PresenterWindowManager.cxx
index 9a5adc481daa..a4ea38e65516 100644
--- a/sdext/source/presenter/PresenterWindowManager.cxx
+++ b/sdext/source/presenter/PresenterWindowManager.cxx
@@ -498,7 +498,7 @@ void PresenterWindowManager::StoreViewMode (const ViewMode eViewMode)
             mxComponentContext,
             "/org.openoffice.Office.PresenterScreen/",
             PresenterConfigurationAccess::READ_WRITE);
-        aConfiguration.GoToChild(OUString("Presenter"));
+        aConfiguration.GoToChild("Presenter");
         Any aValue;
         switch (eViewMode)
         {
diff --git a/sfx2/source/control/unoctitm.cxx b/sfx2/source/control/unoctitm.cxx
index e7d31019e4b2..94cc07839585 100644
--- a/sfx2/source/control/unoctitm.cxx
+++ b/sfx2/source/control/unoctitm.cxx
@@ -1046,7 +1046,7 @@ static void InterceptLOKStateChangeEvent(const SfxViewFrame* pViewFrame, const c
         const SfxUInt32Item* pUndoConflict = dynamic_cast< const SfxUInt32Item * >( pState );
         if ( pUndoConflict && pUndoConflict->GetValue() > 0 )
         {
-            aBuffer.append(OUString("disabled"));
+            aBuffer.append("disabled");
         }
         else
         {
@@ -1148,7 +1148,7 @@ static void InterceptLOKStateChangeEvent(const SfxViewFrame* pViewFrame, const c
         }
         else
         {
-            aBuffer.append(OUString("disabled"));
+            aBuffer.append("disabled");
         }
     }
     else if (aEvent.FeatureURL.Path == "Position")
diff --git a/stoc/source/corereflection/crefl.cxx b/stoc/source/corereflection/crefl.cxx
index a306a0d441c2..040080a3ba7c 100644
--- a/stoc/source/corereflection/crefl.cxx
+++ b/stoc/source/corereflection/crefl.cxx
@@ -318,9 +318,7 @@ const Mapping & IdlReflectionServiceImpl::getCpp2Uno()
         MutexGuard aGuard( getMutexAccess() );
         if (! _aCpp2Uno.is())
         {
-            _aCpp2Uno = Mapping(
-                OUString( CPPU_CURRENT_LANGUAGE_BINDING_NAME ),
-                OUString( UNO_LB_UNO ) );
+            _aCpp2Uno = Mapping( CPPU_CURRENT_LANGUAGE_BINDING_NAME, UNO_LB_UNO );
             OSL_ENSURE( _aCpp2Uno.is(), "### cannot get c++ to uno mapping!" );
             if (! _aCpp2Uno.is())
             {
@@ -340,9 +338,7 @@ const Mapping & IdlReflectionServiceImpl::getUno2Cpp()
         MutexGuard aGuard( getMutexAccess() );
         if (! _aUno2Cpp.is())
         {
-            _aUno2Cpp = Mapping(
-                OUString( UNO_LB_UNO ),
-                OUString( CPPU_CURRENT_LANGUAGE_BINDING_NAME ) );
+            _aUno2Cpp = Mapping( UNO_LB_UNO, CPPU_CURRENT_LANGUAGE_BINDING_NAME );
             OSL_ENSURE( _aUno2Cpp.is(), "### cannot get uno to c++ mapping!" );
             if (! _aUno2Cpp.is())
             {
diff --git a/svx/source/unodialogs/textconversiondlgs/chinese_dictionarydialog.cxx b/svx/source/unodialogs/textconversiondlgs/chinese_dictionarydialog.cxx
index 52ed415d7fbd..0fe2696c98c5 100644
--- a/svx/source/unodialogs/textconversiondlgs/chinese_dictionarydialog.cxx
+++ b/svx/source/unodialogs/textconversiondlgs/chinese_dictionarydialog.cxx
@@ -324,7 +324,7 @@ ChineseDictionaryDialog::ChineseDictionaryDialog(weld::Window* pParent)
 
     SvtLinguConfig  aLngCfg;
     bool bValue;
-    Any aAny( aLngCfg.GetProperty( OUString( UPN_IS_REVERSE_MAPPING ) ) );
+    Any aAny( aLngCfg.GetProperty( UPN_IS_REVERSE_MAPPING ) );
     if( aAny >>= bValue )
         m_xCB_Reverse->set_active( bValue );
 
@@ -637,7 +637,7 @@ short ChineseDictionaryDialog::run()
     {
         //save settings to configuration
         SvtLinguConfig  aLngCfg;
-        aLngCfg.SetProperty( OUString( UPN_IS_REVERSE_MAPPING ), uno::Any(m_xCB_Reverse->get_active()) );
+        aLngCfg.SetProperty( UPN_IS_REVERSE_MAPPING, uno::Any(m_xCB_Reverse->get_active()) );
 
         m_xCT_DictionaryToSimplified->save();
         m_xCT_DictionaryToTraditional->save();
diff --git a/svx/source/unodialogs/textconversiondlgs/chinese_translationdialog.cxx b/svx/source/unodialogs/textconversiondlgs/chinese_translationdialog.cxx
index 517570408f40..9bef507b73a9 100644
--- a/svx/source/unodialogs/textconversiondlgs/chinese_translationdialog.cxx
+++ b/svx/source/unodialogs/textconversiondlgs/chinese_translationdialog.cxx
@@ -40,14 +40,14 @@ ChineseTranslationDialog::ChineseTranslationDialog(weld::Window* pParent)
 {
     SvtLinguConfig  aLngCfg;
     bool bValue = false;
-    Any aAny( aLngCfg.GetProperty( OUString( UPN_IS_DIRECTION_TO_SIMPLIFIED ) ) );
+    Any aAny( aLngCfg.GetProperty( UPN_IS_DIRECTION_TO_SIMPLIFIED ) );
     aAny >>= bValue;
     if( bValue )
         m_xRB_To_Simplified->set_active(true);
     else
         m_xRB_To_Traditional->set_active(true);
 
-    aAny = aLngCfg.GetProperty( OUString( UPN_IS_TRANSLATE_COMMON_TERMS ) );
+    aAny = aLngCfg.GetProperty( UPN_IS_TRANSLATE_COMMON_TERMS );
     if( aAny >>= bValue )
         m_xCB_Translate_Commonterms->set_active( bValue );
 
@@ -72,9 +72,9 @@ IMPL_LINK_NOARG(ChineseTranslationDialog, OkHdl, weld::Button&, void)
     SvtLinguConfig  aLngCfg;
     Any aAny;
     aAny <<= m_xRB_To_Simplified->get_active();
-    aLngCfg.SetProperty( OUString( UPN_IS_DIRECTION_TO_SIMPLIFIED ), aAny );
+    aLngCfg.SetProperty( UPN_IS_DIRECTION_TO_SIMPLIFIED, aAny );
     aAny <<= m_xCB_Translate_Commonterms->get_active();
-    aLngCfg.SetProperty( OUString( UPN_IS_TRANSLATE_COMMON_TERMS ), aAny );
+    aLngCfg.SetProperty( UPN_IS_TRANSLATE_COMMON_TERMS, aAny );
 
     m_xDialog->response(RET_OK);
 }
diff --git a/sw/qa/extras/uiwriter/uiwriter.cxx b/sw/qa/extras/uiwriter/uiwriter.cxx
index 21138677443b..d6795ead6620 100644
--- a/sw/qa/extras/uiwriter/uiwriter.cxx
+++ b/sw/qa/extras/uiwriter/uiwriter.cxx
@@ -2248,7 +2248,7 @@ void SwUiWriterTest::testTdf69282()
     verticalSpace.SetLower(14);
     rSourceMasterFormat.SetFormatAttr(verticalSpace);
     //Changing the style and copying it to target
-    source->ChgPageDesc(OUString("SourceStyle"), *sPageDesc);
+    source->ChgPageDesc("SourceStyle", *sPageDesc);
     target->CopyPageDesc(*sPageDesc, *tPageDesc);
     //Checking the set values on all Formats in target
     SwFrameFormat& rTargetMasterFormat = tPageDesc->GetMaster();
@@ -2309,7 +2309,7 @@ void SwUiWriterTest::testTdf69282WithMirror()
     verticalSpace.SetLower(14);
     rSourceMasterFormat.SetFormatAttr(verticalSpace);
     //Changing the style and copying it to target
-    source->ChgPageDesc(OUString("SourceStyle"), *sPageDesc);
+    source->ChgPageDesc("SourceStyle", *sPageDesc);
     target->CopyPageDesc(*sPageDesc, *tPageDesc);
     //Checking the set values on all Formats in target
     SwFrameFormat& rTargetMasterFormat = tPageDesc->GetMaster();
diff --git a/sw/source/core/doc/DocumentTimerManager.cxx b/sw/source/core/doc/DocumentTimerManager.cxx
index 1ed1b556ad6a..266ee7386875 100644
--- a/sw/source/core/doc/DocumentTimerManager.cxx
+++ b/sw/source/core/doc/DocumentTimerManager.cxx
@@ -124,8 +124,7 @@ DocumentTimerManager::IdleJob DocumentTimerManager::GetNextIdleJob() const
         {
             bool bIsOnlineSpell = pShell->GetViewOptions()->IsOnlineSpell();
             bool bIsAutoGrammar = false;
-            SvtLinguConfig().GetProperty( OUString(
-                        UPN_IS_GRAMMAR_AUTO ) ) >>= bIsAutoGrammar;
+            SvtLinguConfig().GetProperty( UPN_IS_GRAMMAR_AUTO ) >>= bIsAutoGrammar;
 
             if( bIsOnlineSpell && bIsAutoGrammar && m_rDoc.StartGrammarChecking( true ) )
                 return IdleJob::Grammar;
diff --git a/sw/source/core/swg/SwXMLTextBlocks1.cxx b/sw/source/core/swg/SwXMLTextBlocks1.cxx
index 1299cbc1c90e..0a064945be94 100644
--- a/sw/source/core/swg/SwXMLTextBlocks1.cxx
+++ b/sw/source/core/swg/SwXMLTextBlocks1.cxx
@@ -68,7 +68,7 @@ ErrCode SwXMLTextBlocks::GetDoc( sal_uInt16 nIdx )
         try
         {
             xRoot = xBlkRoot->openStorageElement( aFolderName, embed::ElementModes::READ );
-            xMedium = new SfxMedium( xRoot, GetBaseURL(), OUString( "writer8" ) );
+            xMedium = new SfxMedium( xRoot, GetBaseURL(), "writer8" );
             SwReader aReader( *xMedium, aFolderName, m_xDoc.get() );
             ReadXML->SetBlockMode( true );
             aReader.Read( *ReadXML );
diff --git a/sw/source/filter/ww8/rtfexport.cxx b/sw/source/filter/ww8/rtfexport.cxx
index 2dbd38230402..504424b70d8a 100644
--- a/sw/source/filter/ww8/rtfexport.cxx
+++ b/sw/source/filter/ww8/rtfexport.cxx
@@ -259,7 +259,7 @@ void RtfExport::WriteRevTab()
         return;
 
     // RTF always seems to use Unknown as the default first entry
-    GetRedline(OUString("Unknown"));
+    GetRedline("Unknown");
 
     for (SwRangeRedline* pRedl : m_pDoc->getIDocumentRedlineAccess().GetRedlineTable())
     {
diff --git a/sw/source/uibase/app/appopt.cxx b/sw/source/uibase/app/appopt.cxx
index 7929b5a4efd1..9a0b995679a7 100644
--- a/sw/source/uibase/app/appopt.cxx
+++ b/sw/source/uibase/app/appopt.cxx
@@ -151,17 +151,17 @@ std::unique_ptr<SfxItemSet> SwModule::CreateItemSet( sal_uInt16 nId )
 
         using namespace ::com::sun::star::i18n::ScriptType;
 
-        Any aLang = aLinguCfg.GetProperty(OUString("DefaultLocale"));
+        Any aLang = aLinguCfg.GetProperty("DefaultLocale");
         aLang >>= aLocale;
         nLang = MsLangId::resolveSystemLanguageByScriptType(LanguageTag::convertToLanguageType( aLocale, false), LATIN);
         pRet->Put(SvxLanguageItem(nLang, SID_ATTR_LANGUAGE));
 
-        aLang = aLinguCfg.GetProperty(OUString("DefaultLocale_CJK"));
+        aLang = aLinguCfg.GetProperty("DefaultLocale_CJK");
         aLang >>= aLocale;
         nLang = MsLangId::resolveSystemLanguageByScriptType(LanguageTag::convertToLanguageType( aLocale, false), ASIAN);
         pRet->Put(SvxLanguageItem(nLang, SID_ATTR_CHAR_CJK_LANGUAGE));
 
-        aLang = aLinguCfg.GetProperty(OUString("DefaultLocale_CTL"));
+        aLang = aLinguCfg.GetProperty("DefaultLocale_CTL");
         aLang >>= aLocale;
         nLang = MsLangId::resolveSystemLanguageByScriptType(LanguageTag::convertToLanguageType( aLocale, false), COMPLEX);
         pRet->Put(SvxLanguageItem(nLang, SID_ATTR_CHAR_CTL_LANGUAGE));
diff --git a/tools/qa/cppunit/test_config.cxx b/tools/qa/cppunit/test_config.cxx
index eeb1391ab6b8..8002ff99dff7 100644
--- a/tools/qa/cppunit/test_config.cxx
+++ b/tools/qa/cppunit/test_config.cxx
@@ -107,14 +107,14 @@ public:
     {
         Config aConfig(maConfigFile);
         aConfig.SetGroup("TestGroup");
-        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey(OString("testkey")));
-        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey(OString("nonexistenttestkey")));
+        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey("testkey"));
+        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey("nonexistenttestkey"));
         CPPUNIT_ASSERT_EQUAL(OString("notexists"),
                              aConfig.ReadKey("nonexistenttestkey", "notexists"));
 
         aConfig.SetGroup("TestGroup2");
-        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey(OString("testkey2")));
-        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey(OString("nonexistenttestkey")));
+        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey("testkey2"));
+        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey("nonexistenttestkey"));
         CPPUNIT_ASSERT_EQUAL(OString("notexists"),
                              aConfig.ReadKey("nonexistenttestkey", "notexists"));
     }
@@ -138,14 +138,14 @@ public:
         sal_uInt16 nExpected = 2;
         sal_uInt16 nActual = aConfig.GetKeyCount();
         CPPUNIT_ASSERT_EQUAL(nExpected, nActual);
-        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey(OString("testkey_new")));
+        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey("testkey_new"));
 
         aConfig.DeleteKey("testkey_new");
 
         nExpected = 1;
         nActual = aConfig.GetKeyCount();
         CPPUNIT_ASSERT_EQUAL(nExpected, nActual);
-        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey(OString("testkey_new")));
+        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey("testkey_new"));
 
         aConfig.SetGroup("TestGroup2");
         aConfig.WriteKey("testkey_new", "testvalue");
@@ -153,14 +153,14 @@ public:
         nActual = aConfig.GetKeyCount();
         nExpected = 2;
         CPPUNIT_ASSERT_EQUAL(nExpected, nActual);
-        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey(OString("testkey_new")));
+        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey("testkey_new"));
 
         aConfig.DeleteKey("testkey_new");
 
         nActual = aConfig.GetKeyCount();
         nExpected = 1;
         CPPUNIT_ASSERT_EQUAL(nExpected, nActual);
-        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey(OString("testkey_new")));
+        CPPUNIT_ASSERT_EQUAL(OString(), aConfig.ReadKey("testkey_new"));
 
         aConfig.SetGroup("TestGroup3");
         aConfig.WriteKey("testkey_new_group3", "testvalue");
@@ -168,7 +168,7 @@ public:
         nActual = aConfig.GetKeyCount();
         nExpected = 1;
         CPPUNIT_ASSERT_EQUAL(nExpected, nActual);
-        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey(OString("testkey_new_group3")));
+        CPPUNIT_ASSERT_EQUAL(OString("testvalue"), aConfig.ReadKey("testkey_new_group3"));
 
         nExpected = 3;
         CPPUNIT_ASSERT_EQUAL(nExpected, aConfig.GetGroupCount());
diff --git a/tools/source/fsys/urlobj.cxx b/tools/source/fsys/urlobj.cxx
index bd6c25fa66ee..91bdedf699ce 100644
--- a/tools/source/fsys/urlobj.cxx
+++ b/tools/source/fsys/urlobj.cxx
@@ -2302,8 +2302,7 @@ bool INetURLObject::setPassword(OUString const & rThePassword,
     }
     else if (m_aHost.isPresent())
     {
-        m_aAbsURIRef.insert(m_aHost.getBegin(),
-            OUString( ":@" ));
+        m_aAbsURIRef.insert(m_aHost.getBegin(), ":@" );
         m_aUser.set(m_aAbsURIRef, OUString(), m_aHost.getBegin());
         nDelta
             = m_aAuth.set(m_aAbsURIRef, aNewAuth, m_aHost.getBegin() + 1) + 2;
diff --git a/vcl/headless/svpprn.cxx b/vcl/headless/svpprn.cxx
index 0bc0ad3dbcbe..03c24eba8217 100644
--- a/vcl/headless/svpprn.cxx
+++ b/vcl/headless/svpprn.cxx
@@ -94,7 +94,7 @@ static void copyJobDataToJobSetup( ImplJobSetup* pJobSetup, JobData& rData )
 
     pJobSetup->SetPaperBin( 0xffff );
     if( rData.m_pParser )
-        pKey                    = rData.m_pParser->getKey( OUString( "InputSlot"  ) );
+        pKey                    = rData.m_pParser->getKey( "InputSlot" );
     if( pKey )
         pValue                  = rData.m_aContext.getValue( pKey );
     if( pKey && pValue )
@@ -116,7 +116,7 @@ static void copyJobDataToJobSetup( ImplJobSetup* pJobSetup, JobData& rData )
 
     pJobSetup->SetDuplexMode( DuplexMode::Unknown );
     if( rData.m_pParser )
-        pKey = rData.m_pParser->getKey( OUString( "Duplex"  ) );
+        pKey = rData.m_pParser->getKey( "Duplex" );
     if( pKey )
         pValue = rData.m_aContext.getValue( pKey );
     if( pKey && pValue )
diff --git a/vcl/source/app/settings.cxx b/vcl/source/app/settings.cxx
index fccce19ad1f8..4f6e483a0958 100644
--- a/vcl/source/app/settings.cxx
+++ b/vcl/source/app/settings.cxx
@@ -2712,7 +2712,7 @@ namespace
             if ( aNode.isValid() )
             {
                 bool bTmp = bool();
-                css::uno::Any aValue = aNode.getNodeValue( OUString("UIMirroring") );
+                css::uno::Any aValue = aNode.getNodeValue( "UIMirroring" );
                 if( aValue >>= bTmp )
                 {
                     // found true or false; if it was nil, nothing is changed
diff --git a/vcl/source/filter/GraphicNativeTransform.cxx b/vcl/source/filter/GraphicNativeTransform.cxx
index 9d1941f8fae6..85388fe94b91 100644
--- a/vcl/source/filter/GraphicNativeTransform.cxx
+++ b/vcl/source/filter/GraphicNativeTransform.cxx
@@ -111,7 +111,7 @@ bool GraphicNativeTransform::rotateGeneric(sal_uInt16 aRotation, const OUString&
     aStream.Seek( STREAM_SEEK_TO_BEGIN );
 
     Graphic aGraphic;
-    rFilter.ImportGraphic( aGraphic, OUString("import"), aStream );
+    rFilter.ImportGraphic( aGraphic, "import", aStream );
 
     mrGraphic = aGraphic;
     return true;
@@ -160,7 +160,7 @@ void GraphicNativeTransform::rotateJPEG(sal_uInt16 aRotation)
 
         Graphic aGraphic;
         GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
-        rFilter.ImportGraphic( aGraphic, OUString("import"), aTargetStream );
+        rFilter.ImportGraphic( aGraphic, "import", aTargetStream );
         mrGraphic = aGraphic;
     }
 }
diff --git a/vcl/source/gdi/print3.cxx b/vcl/source/gdi/print3.cxx
index 603ec9056212..78715752b711 100644
--- a/vcl/source/gdi/print3.cxx
+++ b/vcl/source/gdi/print3.cxx
@@ -299,7 +299,7 @@ void Printer::PrintJob(const std::shared_ptr<PrinterController>& i_xController,
                        const JobSetup& i_rInitSetup)
 {
     bool bSynchronous = false;
-    css::beans::PropertyValue* pVal = i_xController->getValue( OUString( "Wait" ) );
+    css::beans::PropertyValue* pVal = i_xController->getValue( "Wait" );
     if( pVal )
         pVal->Value >>= bSynchronous;
 
@@ -355,12 +355,12 @@ bool Printer::PreparePrintJob(std::shared_ptr<PrinterController> xController,
     // "Pages" attribute from API is now equivalent to "PageRange"
     // AND "PrintContent" = 1 except calc where it is "PrintRange" = 1
     // Argh ! That sure needs cleaning up
-    css::beans::PropertyValue* pContentVal = xController->getValue(OUString("PrintRange"));
+    css::beans::PropertyValue* pContentVal = xController->getValue("PrintRange");
     if( ! pContentVal )
-        pContentVal = xController->getValue(OUString("PrintContent"));
+        pContentVal = xController->getValue("PrintContent");
 
     // case 1: UNO API has set "Pages"
-    css::beans::PropertyValue* pPagesVal = xController->getValue(OUString("Pages"));
+    css::beans::PropertyValue* pPagesVal = xController->getValue("Pages");
     if( pPagesVal )
     {
         OUString aPagesVal;
@@ -386,7 +386,7 @@ bool Printer::PreparePrintJob(std::shared_ptr<PrinterController> xController,
             if( nContent == 0 )
             {
                 // do not overwrite PageRange if it is already set
-                css::beans::PropertyValue* pRangeVal = xController->getValue(OUString("PageRange"));
+                css::beans::PropertyValue* pRangeVal = xController->getValue("PageRange");
                 OUString aRange;
                 if( pRangeVal )
                     pRangeVal->Value >>= aRange;
@@ -409,7 +409,7 @@ bool Printer::PreparePrintJob(std::shared_ptr<PrinterController> xController,
         }
     }
 
-    css::beans::PropertyValue* pReverseVal = xController->getValue(OUString("PrintReverse"));
+    css::beans::PropertyValue* pReverseVal = xController->getValue("PrintReverse");
     if( pReverseVal )
     {
         bool bReverse = false;
@@ -417,7 +417,7 @@ bool Printer::PreparePrintJob(std::shared_ptr<PrinterController> xController,
         xController->setReversePrint( bReverse );
     }
 
-    css::beans::PropertyValue* pPapersizeFromSetupVal = xController->getValue(OUString("PapersizeFromSetup"));
+    css::beans::PropertyValue* pPapersizeFromSetupVal = xController->getValue("PapersizeFromSetup");
     if( pPapersizeFromSetupVal )
     {
         bool bPapersizeFromSetup = false;
@@ -454,7 +454,7 @@ bool Printer::PreparePrintJob(std::shared_ptr<PrinterController> xController,
         aMPS.bDrawBorder = xController->getBoolProperty( "NUpDrawBorder", aMPS.bDrawBorder );
         aMPS.nOrder = static_cast<NupOrderType>(xController->getIntProperty( "NUpSubPageOrder", static_cast<sal_Int32>(aMPS.nOrder) ));
         aMPS.aPaperSize = xController->getPrinter()->PixelToLogic( xController->getPrinter()->GetPaperSizePixel(), MapMode( MapUnit::Map100thMM ) );
-        css::beans::PropertyValue* pPgSizeVal = xController->getValue( OUString( "NUpPaperSize" ) );
+        css::beans::PropertyValue* pPgSizeVal = xController->getValue( "NUpPaperSize" );
         css::awt::Size aSizeVal;
         if( pPgSizeVal && (pPgSizeVal->Value >>= aSizeVal) )
         {
@@ -524,7 +524,7 @@ bool Printer::PreparePrintJob(std::shared_ptr<PrinterController> xController,
 bool Printer::ExecutePrintJob(const std::shared_ptr<PrinterController>& xController)
 {
     OUString aJobName;
-    css::beans::PropertyValue* pJobNameVal = xController->getValue( OUString( "JobName" ) );
+    css::beans::PropertyValue* pJobNameVal = xController->getValue( "JobName" );
     if( pJobNameVal )
         pJobNameVal->Value >>= aJobName;
 
@@ -585,13 +585,13 @@ bool Printer::StartJob( const OUString& i_rJobName, std::shared_ptr<vcl::Printer
         return false;
 
     bool bSinglePrintJobs = false;
-    css::beans::PropertyValue* pSingleValue = i_xController->getValue(OUString("PrintCollateAsSingleJobs"));
+    css::beans::PropertyValue* pSingleValue = i_xController->getValue("PrintCollateAsSingleJobs");
     if( pSingleValue )
     {
         pSingleValue->Value >>= bSinglePrintJobs;
     }
 
-    css::beans::PropertyValue* pFileValue = i_xController->getValue(OUString("LocalFileName"));
+    css::beans::PropertyValue* pFileValue = i_xController->getValue("LocalFileName");
     if( pFileValue )
     {
         OUString aFile;
@@ -1436,7 +1436,7 @@ css::uno::Sequence< css::beans::PropertyValue > PrinterController::getJobPropert
             aResult[nCur++] = rPropVal;
     }
     // append IsFirstPage
-    if( aMergeSet.find( OUString( "IsFirstPage" ) ) == aMergeSet.end() )
+    if( aMergeSet.find( "IsFirstPage" ) == aMergeSet.end() )
     {
         css::beans::PropertyValue aVal;
         aVal.Name = "IsFirstPage";
@@ -1444,7 +1444,7 @@ css::uno::Sequence< css::beans::PropertyValue > PrinterController::getJobPropert
         aResult[nCur++] = aVal;
     }
     // append IsLastPage
-    if( aMergeSet.find( OUString( "IsLastPage" ) ) == aMergeSet.end() )
+    if( aMergeSet.find( "IsLastPage" ) == aMergeSet.end() )
     {
         css::beans::PropertyValue aVal;
         aVal.Name = "IsLastPage";
@@ -1452,7 +1452,7 @@ css::uno::Sequence< css::beans::PropertyValue > PrinterController::getJobPropert
         aResult[nCur++] = aVal;
     }
     // append IsPrinter
-    if( aMergeSet.find( OUString( "IsPrinter" ) ) == aMergeSet.end() )
+    if( aMergeSet.find( "IsPrinter" ) == aMergeSet.end() )
     {
         css::beans::PropertyValue aVal;
         aVal.Name = "IsPrinter";
@@ -1683,12 +1683,12 @@ void PrinterController::createProgressDialog()
     if (!mpImplData->mxProgress)
     {
         bool bShow = true;
-        css::beans::PropertyValue* pMonitor = getValue( OUString( "MonitorVisible" ) );
+        css::beans::PropertyValue* pMonitor = getValue( "MonitorVisible" );
         if( pMonitor )
             pMonitor->Value >>= bShow;
         else
         {
-            const css::beans::PropertyValue* pVal = getValue( OUString( "IsApi" ) );
+            const css::beans::PropertyValue* pVal = getValue( "IsApi" );
             if( pVal )
             {
                 bool bApi = false;
@@ -1735,17 +1735,17 @@ void PrinterController::pushPropertiesToPrinter()
 {
     sal_Int32 nCopyCount = 1;
     // set copycount and collate
-    const css::beans::PropertyValue* pVal = getValue( OUString( "CopyCount" ) );
+    const css::beans::PropertyValue* pVal = getValue( "CopyCount" );
     if( pVal )
         pVal->Value >>= nCopyCount;
     bool bCollate = false;
-    pVal = getValue( OUString( "Collate" ) );
+    pVal = getValue( "Collate" );
     if( pVal )
         pVal->Value >>= bCollate;
     mpImplData->mxPrinter->SetCopyCount( static_cast<sal_uInt16>(nCopyCount), bCollate );
 
     // duplex mode
-    pVal = getValue( OUString( "DuplexMode" ) );
+    pVal = getValue( "DuplexMode" );
     if( pVal )
     {
         sal_Int16 nDuplex = css::view::DuplexMode::UNKNOWN;
diff --git a/vcl/source/treelist/treelistbox.cxx b/vcl/source/treelist/treelistbox.cxx
index 2a6d7286a03d..e2271167a24a 100644
--- a/vcl/source/treelist/treelistbox.cxx
+++ b/vcl/source/treelist/treelistbox.cxx
@@ -1922,7 +1922,7 @@ void SvTreeListBox::KeyInput( const KeyEvent& rKEvt )
 void SvTreeListBox::RequestingChildren( SvTreeListEntry* pParent )
 {
     if( !pParent->HasChildren() )
-        InsertEntry( OUString("<dummy>"), pParent );
+        InsertEntry( "<dummy>", pParent );
 }
 
 void SvTreeListBox::GetFocus()
diff --git a/vcl/source/window/builder.cxx b/vcl/source/window/builder.cxx
index 9e1e0748d5ef..9cda9210b38d 100644
--- a/vcl/source/window/builder.cxx
+++ b/vcl/source/window/builder.cxx
@@ -800,7 +800,7 @@ namespace
     bool extractDrawValue(VclBuilder::stringmap& rMap)
     {
         bool bDrawValue = true;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("draw_value"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("draw_value");
         if (aFind != rMap.end())
         {
             bDrawValue = toBool(aFind->second);
@@ -812,7 +812,7 @@ namespace
     OUString extractPopupMenu(VclBuilder::stringmap& rMap)
     {
         OUString sRet;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("popup"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("popup");
         if (aFind != rMap.end())
         {
             sRet = aFind->second;
@@ -824,7 +824,7 @@ namespace
     OUString extractValuePos(VclBuilder::stringmap& rMap)
     {
         OUString sRet("top");
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("value_pos"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("value_pos");
         if (aFind != rMap.end())
         {
             sRet = aFind->second;
@@ -836,7 +836,7 @@ namespace
     OUString extractTypeHint(VclBuilder::stringmap &rMap)
     {
         OUString sRet("normal");
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("type-hint"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("type-hint");
         if (aFind != rMap.end())
         {
             sRet = aFind->second;
@@ -848,7 +848,7 @@ namespace
     bool extractResizable(VclBuilder::stringmap &rMap)
     {
         bool bResizable = true;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("resizable"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("resizable");
         if (aFind != rMap.end())
         {
             bResizable = toBool(aFind->second);
@@ -861,7 +861,7 @@ namespace
     bool extractModal(VclBuilder::stringmap &rMap)
     {
         bool bModal = false;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("modal"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("modal");
         if (aFind != rMap.end())
         {
             bModal = toBool(aFind->second);
@@ -874,7 +874,7 @@ namespace
     bool extractDecorated(VclBuilder::stringmap &rMap)
     {
         bool bDecorated = true;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("decorated"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("decorated");
         if (aFind != rMap.end())
         {
             bDecorated = toBool(aFind->second);
@@ -886,7 +886,7 @@ namespace
     bool extractCloseable(VclBuilder::stringmap &rMap)
     {
         bool bCloseable = true;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("deletable"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("deletable");
         if (aFind != rMap.end())
         {
             bCloseable = toBool(aFind->second);
@@ -898,7 +898,7 @@ namespace
     bool extractEntry(VclBuilder::stringmap &rMap)
     {
         bool bHasEntry = false;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("has-entry"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("has-entry");
         if (aFind != rMap.end())
         {
             bHasEntry = toBool(aFind->second);
@@ -910,7 +910,7 @@ namespace
     bool extractOrientation(VclBuilder::stringmap &rMap)
     {
         bool bVertical = false;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("orientation"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("orientation");
         if (aFind != rMap.end())
         {
             bVertical = aFind->second.equalsIgnoreAsciiCase("vertical");
@@ -922,7 +922,7 @@ namespace
     bool extractInconsistent(VclBuilder::stringmap &rMap)
     {
         bool bInconsistent = false;
-        VclBuilder::stringmap::iterator aFind = rMap.find(OString("inconsistent"));
+        VclBuilder::stringmap::iterator aFind = rMap.find("inconsistent");
         if (aFind != rMap.end())
         {
             bInconsistent = toBool(aFind->second);
@@ -1072,7 +1072,7 @@ namespace
             sWidthRequest = aFind->second;
             rMap.erase(aFind);
         }
-        aFind = rMap.find(OString("height-request"));
+        aFind = rMap.find("height-request");
         if (aFind != rMap.end())
         {
             sHeightRequest = aFind->second;
diff --git a/vcl/source/window/settings.cxx b/vcl/source/window/settings.cxx
index cd0c17bdc624..9f5633a7d658 100644
--- a/vcl/source/window/settings.cxx
+++ b/vcl/source/window/settings.cxx
@@ -237,7 +237,7 @@ void Window::ImplUpdateGlobalSettings( AllSettings& rSettings, bool bCallHdl ) c
             "org.openoffice.Office.Common/Accessibility" );    // note: case sensitive !
         if ( aNode.isValid() )
         {
-            css::uno::Any aValue = aNode.getNodeValue( OUString("AutoDetectSystemHC") );
+            css::uno::Any aValue = aNode.getNodeValue( "AutoDetectSystemHC" );
             bool bTmp = false;
             if( aValue >>= bTmp )
                 bAutoHCMode = bTmp;
diff --git a/vcl/source/window/toolbox2.cxx b/vcl/source/window/toolbox2.cxx
index 3d7b0de98ea9..2ae429134a28 100644
--- a/vcl/source/window/toolbox2.cxx
+++ b/vcl/source/window/toolbox2.cxx
@@ -1734,7 +1734,7 @@ bool ToolBox::AlwaysLocked()
         {
             // feature enabled ?
             bool bStatesEnabled = bool();
-            css::uno::Any aValue = aNode.getNodeValue( OUString("StatesEnabled") );
+            css::uno::Any aValue = aNode.getNodeValue( "StatesEnabled" );
             if( aValue >>= bStatesEnabled )
             {
                 if( bStatesEnabled )
@@ -1745,7 +1745,7 @@ bool ToolBox::AlwaysLocked()
                         "/org.openoffice.Office.UI.GlobalSettings/Toolbars/States" );    // note: case sensitive !
 
                     bool bLocked = bool();
-                    css::uno::Any aValue2 = aNode2.getNodeValue( OUString("Locked") );
+                    css::uno::Any aValue2 = aNode2.getNodeValue( "Locked" );
                     if( aValue2 >>= bLocked )
                         nAlwaysLocked = bLocked ? 1 : 0;
                 }
diff --git a/vcl/unx/generic/print/printerjob.cxx b/vcl/unx/generic/print/printerjob.cxx
index f79e174225bf..4b00e8924b47 100644
--- a/vcl/unx/generic/print/printerjob.cxx
+++ b/vcl/unx/generic/print/printerjob.cxx
@@ -789,7 +789,7 @@ void PrinterJob::writeJobPatch( osl::File* pFile, const JobData& rJobData )
     const PPDKey* pKey = nullptr;
 
     if( rJobData.m_pParser )
-        pKey = rJobData.m_pParser->getKey( OUString( "JobPatchFile"  ) );
+        pKey = rJobData.m_pParser->getKey( "JobPatchFile" );
     if( ! pKey )
         return;
 
diff --git a/vcl/unx/generic/print/prtsetup.cxx b/vcl/unx/generic/print/prtsetup.cxx
index 6a38db31b1d9..d3c565846c17 100644
--- a/vcl/unx/generic/print/prtsetup.cxx
+++ b/vcl/unx/generic/print/prtsetup.cxx
@@ -178,7 +178,7 @@ void RTSPaperPage::update()
 
     // duplex
     if( m_pParent->m_aJobData.m_pParser &&
-        (pKey = m_pParent->m_aJobData.m_pParser->getKey( OUString( "Duplex" ) )) )
+        (pKey = m_pParent->m_aJobData.m_pParser->getKey( "Duplex" )) )
     {
         m_pParent->insertAllPPDValues( *m_xDuplexBox, m_pParent->m_aJobData.m_pParser, pKey );
     }
@@ -190,7 +190,7 @@ void RTSPaperPage::update()
 
     // paper
     if( m_pParent->m_aJobData.m_pParser &&
-        (pKey = m_pParent->m_aJobData.m_pParser->getKey( OUString( "PageSize" ) )) )
+        (pKey = m_pParent->m_aJobData.m_pParser->getKey( "PageSize" )) )
     {
         m_pParent->insertAllPPDValues( *m_xPaperBox, m_pParent->m_aJobData.m_pParser, pKey );
     }
@@ -202,7 +202,7 @@ void RTSPaperPage::update()
 
     // input slots
     if( m_pParent->m_aJobData.m_pParser &&
-        (pKey = m_pParent->m_aJobData.m_pParser->getKey( OUString("InputSlot") )) )
+        (pKey = m_pParent->m_aJobData.m_pParser->getKey( "InputSlot" )) )
     {
         m_pParent->insertAllPPDValues( *m_xSlotBox, m_pParent->m_aJobData.m_pParser, pKey );
     }
@@ -236,17 +236,17 @@ IMPL_LINK( RTSPaperPage, SelectHdl, weld::ComboBox&, rBox, void )
     if( &rBox == m_xPaperBox.get() )
     {
         if( m_pParent->m_aJobData.m_pParser )
-            pKey = m_pParent->m_aJobData.m_pParser->getKey( OUString( "PageSize" ) );
+            pKey = m_pParent->m_aJobData.m_pParser->getKey( "PageSize" );
     }
     else if( &rBox == m_xDuplexBox.get() )
     {
         if( m_pParent->m_aJobData.m_pParser )
-            pKey = m_pParent->m_aJobData.m_pParser->getKey( OUString( "Duplex" ) );
+            pKey = m_pParent->m_aJobData.m_pParser->getKey( "Duplex" );
     }
     else if( &rBox == m_xSlotBox.get() )
     {
         if( m_pParent->m_aJobData.m_pParser )
-            pKey = m_pParent->m_aJobData.m_pParser->getKey( OUString( "InputSlot" ) );
+            pKey = m_pParent->m_aJobData.m_pParser->getKey( "InputSlot" );
     }
     else if( &rBox == m_xOrientBox.get() )
     {
diff --git a/vcl/unx/generic/printer/jobdata.cxx b/vcl/unx/generic/printer/jobdata.cxx
index 02d10cf48077..11f1b931ecaf 100644
--- a/vcl/unx/generic/printer/jobdata.cxx
+++ b/vcl/unx/generic/printer/jobdata.cxx
@@ -66,17 +66,17 @@ void JobData::setCollate( bool bCollate )
     const PPDParser* pParser = m_aContext.getParser();
     if( pParser )
     {
-        const PPDKey* pKey = pParser->getKey( OUString( "Collate" ) );
+        const PPDKey* pKey = pParser->getKey( "Collate" );
         if( pKey )
         {
             const PPDValue* pVal = nullptr;
             if( bCollate )
-                pVal = pKey->getValue( OUString( "True" ) );
+                pVal = pKey->getValue( "True" );
             else
             {
-                pVal = pKey->getValue( OUString( "False" ) );
+                pVal = pKey->getValue( "False" );
                 if( ! pVal )
-                    pVal = pKey->getValue( OUString( "None" ) );
+                    pVal = pKey->getValue( "None" );
             }
             m_aContext.setValue( pKey, pVal );
         }
@@ -89,7 +89,7 @@ void JobData::setPaper( int i_nWidth, int i_nHeight )
     {
         OUString aPaper( m_pParser->matchPaper( i_nWidth, i_nHeight ) );
 
-        const PPDKey*   pKey = m_pParser->getKey( OUString( "PageSize" ) );
+        const PPDKey*   pKey = m_pParser->getKey( "PageSize" );
         const PPDValue* pValue = pKey ? pKey->getValueCaseInsensitive( aPaper ) : nullptr;
 
         if (pKey && pValue)
@@ -101,7 +101,7 @@ void JobData::setPaperBin( int i_nPaperBin )
 {
     if( m_pParser )
     {
-        const PPDKey*   pKey = m_pParser->getKey( OUString( "InputSlot" ) );
+        const PPDKey*   pKey = m_pParser->getKey( "InputSlot" );
         const PPDValue* pValue = pKey ? pKey->getValue( i_nPaperBin ) : nullptr;
 
         if (pKey && pValue)
diff --git a/vcl/unx/generic/printer/ppdparser.cxx b/vcl/unx/generic/printer/ppdparser.cxx
index d05455e47d14..4fc3bc79ac61 100644
--- a/vcl/unx/generic/printer/ppdparser.cxx
+++ b/vcl/unx/generic/printer/ppdparser.cxx
@@ -604,7 +604,7 @@ PPDParser::PPDParser(const OUString& rFile, const std::vector<PPDKey*>& keys)
     // fill in shortcuts
     const PPDKey* pKey;
 
-    pKey = getKey( OUString( "PageSize" ) );
+    pKey = getKey( "PageSize" );
 
     if ( pKey ) {
         std::unique_ptr<PPDKey> pImageableAreas(new PPDKey("ImageableArea"));
@@ -644,7 +644,7 @@ PPDParser::PPDParser(const OUString& rFile, const std::vector<PPDKey*>& keys)
         insertKey(std::move(pPaperDimensions));
     }
 
-    m_pImageableAreas = getKey(  OUString( "ImageableArea" ) );
+    m_pImageableAreas = getKey( "ImageableArea" );
     const PPDValue* pDefaultImageableArea = nullptr;
     if( m_pImageableAreas )
         pDefaultImageableArea = m_pImageableAreas->getDefaultValue();
@@ -655,7 +655,7 @@ PPDParser::PPDParser(const OUString& rFile, const std::vector<PPDKey*>& keys)
         SAL_WARN( "vcl.unx.print", "no DefaultImageableArea in " << m_aFile);
     }
 
-    m_pPaperDimensions = getKey( OUString( "PaperDimension" ) );
+    m_pPaperDimensions = getKey( "PaperDimension" );
     if( m_pPaperDimensions )
         m_pDefaultPaperDimension = m_pPaperDimensions->getDefaultValue();
     if (m_pPaperDimensions == nullptr) {
@@ -665,7 +665,7 @@ PPDParser::PPDParser(const OUString& rFile, const std::vector<PPDKey*>& keys)
         SAL_WARN( "vcl.unx.print", "no DefaultPaperDimensions in " << m_aFile);
     }
 
-    auto pResolutions = getKey( OUString( "Resolution" ) );
+    auto pResolutions = getKey( "Resolution" );
     if( pResolutions )
         m_pDefaultResolution = pResolutions->getDefaultValue();
     if (pResolutions == nullptr) {
@@ -673,19 +673,19 @@ PPDParser::PPDParser(const OUString& rFile, const std::vector<PPDKey*>& keys)
     }
     SAL_INFO_IF(!m_pDefaultResolution, "vcl.unx.print", "no DefaultResolution in " + m_aFile);
 
-    auto pInputSlots = getKey( OUString( "InputSlot" ) );
+    auto pInputSlots = getKey( "InputSlot" );
     if( pInputSlots )
         m_pDefaultInputSlot = pInputSlots->getDefaultValue();
     SAL_INFO_IF(!pInputSlots, "vcl.unx.print", "no InputSlot in " << m_aFile);
     SAL_INFO_IF(!m_pDefaultInputSlot, "vcl.unx.print", "no DefaultInputSlot in " << m_aFile);
 
-    auto pFontList = getKey( OUString( "Font" ) );
+    auto pFontList = getKey( "Font" );
     if (pFontList == nullptr) {
         SAL_WARN( "vcl.unx.print", "no Font in " << m_aFile);
     }
 
     // fill in direct values
-    if( (pKey = getKey( OUString( "print-color-mode" ) )) )
+    if( (pKey = getKey( "print-color-mode" )) )
         m_bColorDevice = pKey->countValues() > 1;
 }
 
@@ -810,7 +810,7 @@ PPDParser::PPDParser( const OUString& rFile ) :
     // fill in shortcuts
     const PPDKey* pKey;
 
-    m_pImageableAreas = getKey(  OUString( "ImageableArea" ) );
+    m_pImageableAreas = getKey( "ImageableArea" );
     const PPDValue * pDefaultImageableArea = nullptr;
     if( m_pImageableAreas )
         pDefaultImageableArea = m_pImageableAreas->getDefaultValue();
@@ -821,7 +821,7 @@ PPDParser::PPDParser( const OUString& rFile ) :
         SAL_WARN( "vcl.unx.print", "no DefaultImageableArea in " << m_aFile);
     }
 
-    m_pPaperDimensions = getKey( OUString( "PaperDimension" ) );
+    m_pPaperDimensions = getKey( "PaperDimension" );
     if( m_pPaperDimensions )
         m_pDefaultPaperDimension = m_pPaperDimensions->getDefaultValue();
     if (m_pPaperDimensions == nullptr) {
@@ -831,7 +831,7 @@ PPDParser::PPDParser( const OUString& rFile ) :
         SAL_WARN( "vcl.unx.print", "no DefaultPaperDimensions in " << m_aFile);
     }
 
-    auto pResolutions = getKey( OUString( "Resolution" ) );
+    auto pResolutions = getKey( "Resolution" );
     if( pResolutions )
         m_pDefaultResolution = pResolutions->getDefaultValue();
     if (pResolutions == nullptr) {
@@ -839,30 +839,30 @@ PPDParser::PPDParser( const OUString& rFile ) :
     }
     SAL_INFO_IF(!m_pDefaultResolution, "vcl.unx.print", "no DefaultResolution in " + m_aFile);
 
-    auto pInputSlots = getKey( OUString( "InputSlot" ) );
+    auto pInputSlots = getKey( "InputSlot" );
     if( pInputSlots )
         m_pDefaultInputSlot = pInputSlots->getDefaultValue();
     SAL_INFO_IF(!pInputSlots, "vcl.unx.print", "no InputSlot in " << m_aFile);
     SAL_INFO_IF(!m_pDefaultInputSlot, "vcl.unx.print", "no DefaultInputSlot in " << m_aFile);
 
-    auto pFontList = getKey( OUString( "Font" ) );
+    auto pFontList = getKey( "Font" );
     if (pFontList == nullptr) {
         SAL_WARN( "vcl.unx.print", "no Font in " << m_aFile);
     }
 
     // fill in direct values
-    if ((pKey = getKey(OUString("ColorDevice"))))
+    if ((pKey = getKey("ColorDevice")))
     {
         if (const PPDValue* pValue = pKey->getValue(0))
             m_bColorDevice = pValue->m_aValue.startsWithIgnoreAsciiCase("true");
     }
 
-    if ((pKey = getKey(OUString("LanguageLevel"))))
+    if ((pKey = getKey("LanguageLevel")))
     {
         if (const PPDValue* pValue = pKey->getValue(0))
             m_nLanguageLevel = pValue->m_aValue.toInt32();
     }
-    if ((pKey = getKey(OUString("TTRasterizer"))))
+    if ((pKey = getKey("TTRasterizer")))
     {
         if (const PPDValue* pValue = pKey->getValue(0))
             m_bType42Capable = pValue->m_aValue.equalsIgnoreAsciiCase( "Type42" );
@@ -1757,9 +1757,9 @@ bool PPDContext::resetValue( const PPDKey* pKey, bool bDefaultable )
     if( ! pKey || ! m_pParser || ! m_pParser->hasKey( pKey ) )
         return false;
 
-    const PPDValue* pResetValue = pKey->getValue( OUString( "None" ) );
+    const PPDValue* pResetValue = pKey->getValue( "None" );
     if( ! pResetValue )
-        pResetValue = pKey->getValue( OUString( "False" ) );
+        pResetValue = pKey->getValue( "False" );
     if( ! pResetValue && bDefaultable )
         pResetValue = pKey->getDefaultValue();
 
@@ -1938,7 +1938,7 @@ int PPDContext::getRenderResolution() const
     if( m_pParser )
     {
         int nDPIx = 300, nDPIy = 300;
-        const PPDKey* pKey = m_pParser->getKey( OUString( "Resolution" ) );
+        const PPDKey* pKey = m_pParser->getKey( "Resolution" );
         if( pKey )
         {
             const PPDValue* pValue = getValue( pKey );
@@ -1963,7 +1963,7 @@ void PPDContext::getPageSize( OUString& rPaper, int& rWidth, int& rHeight ) cons
     rHeight = 842;
     if( m_pParser )
     {
-        const PPDKey* pKey = m_pParser->getKey( OUString( "PageSize" ) );
+        const PPDKey* pKey = m_pParser->getKey( "PageSize" );
         if( pKey )
         {
             const PPDValue* pValue = getValue( pKey );
diff --git a/vcl/unx/generic/printer/printerinfomanager.cxx b/vcl/unx/generic/printer/printerinfomanager.cxx
index 28ba5eee2e7b..f70141c9e16c 100644
--- a/vcl/unx/generic/printer/printerinfomanager.cxx
+++ b/vcl/unx/generic/printer/printerinfomanager.cxx
@@ -501,8 +501,8 @@ void PrinterInfoManager::initialize()
     {
         PrinterInfo aDefaultInfo( getPrinterInfo( m_aDefaultPrinter ) );
 
-        const PPDKey* pDefKey           = aDefaultInfo.m_pParser->getKey( OUString( "PageSize" ) );
-        const PPDKey* pMergeKey         = aMergeInfo.m_pParser->getKey( OUString( "PageSize" ) );
+        const PPDKey* pDefKey           = aDefaultInfo.m_pParser->getKey( "PageSize" );
+        const PPDKey* pMergeKey         = aMergeInfo.m_pParser->getKey( "PageSize" );
         const PPDValue* pDefValue       = aDefaultInfo.m_aContext.getValue( pDefKey );
         const PPDValue* pMergeValue     = pMergeKey ? pMergeKey->getValue( pDefValue->m_aOption ) : nullptr;
         if( pMergeKey && pMergeValue )
@@ -603,7 +603,7 @@ void PrinterInfoManager::setDefaultPaper( PPDContext& rContext ) const
     if(  ! rContext.getParser() )
         return;
 
-    const PPDKey* pPageSizeKey = rContext.getParser()->getKey( OUString( "PageSize" ) );
+    const PPDKey* pPageSizeKey = rContext.getParser()->getKey( "PageSize" );
     if( ! pPageSizeKey )
         return;
 
diff --git a/writerfilter/source/rtftok/rtfdispatchdestination.cxx b/writerfilter/source/rtftok/rtfdispatchdestination.cxx
index fa93abb624b3..71bec66ba057 100644
--- a/writerfilter/source/rtftok/rtfdispatchdestination.cxx
+++ b/writerfilter/source/rtftok/rtfdispatchdestination.cxx
@@ -107,7 +107,7 @@ RTFError RTFDocumentImpl::dispatchDestination(RTFKeyword nKeyword)
                 Strm().Seek(nPos);
 
                 // Form data should be handled only for form fields if any
-                if (aBuf.toString().indexOf(OString("FORM")) != -1)
+                if (aBuf.toString().indexOf("FORM") != -1)
                     m_bFormField = true;
 
                 singleChar(cFieldStart);
diff --git a/xmloff/source/style/xmlnumfi.cxx b/xmloff/source/style/xmlnumfi.cxx
index 100ada1d3ec7..c621360c2fdf 100644
--- a/xmloff/source/style/xmlnumfi.cxx
+++ b/xmloff/source/style/xmlnumfi.cxx
@@ -1297,9 +1297,9 @@ void SvXMLNumFmtElementContext::EndElement()
                 rParent.AddNumber( aNumInfo );      // simple number
 
                 if ( aNumInfo.bExpSign )
-                    rParent.AddToCode( OUString("E+") );
+                    rParent.AddToCode( "E+" );
                 else
-                    rParent.AddToCode( OUString("E") );
+                    rParent.AddToCode( "E" );
                 for (sal_Int32 i=0; i<aNumInfo.nExpDigits; i++)
                 {
                     rParent.AddToCode( '0' );


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