Remaining loplugin:bufferadd

...that had been missing because the plugin didn't implement postRun, so it
didn't report anything when run as part of the shared plugin.  (But did report
the expected warnings when run as a standalone plugin during
CompilerTest_compilerplugins_clang.)

Most fixes are straightforward.  A noteworthy one is PreparedStatement::setBytes
in connectivity/source/drivers/postgresql/pq_preparedstatement.cxx:  The old
preallocation of a 20 character OStringBuffer might have prevented

  buf.append( reinterpret_cast<char *>(escapedString), len -1 );

from potentially throwing std::bad_alloc, which would have caused escapedString
to be leaked.  Even though that 20-character preallocation was likely just
random junk and not meant to address the potential leak, lets address it now.

Change-Id: Ib506332d061684a22a74e5e39e591539fd2c4900
Reviewed-on: https://gerrit.libreoffice.org/80925
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

3 files changed, 3 insertions, 18 deletions

diff --git a/unotools/source/config/eventcfg.cxx b/unotools/source/config/eventcfg.cxx
index deb87647599c..b0e36fc62c4d 100644
--- a/unotools/source/config/eventcfg.cxx
+++ b/unotools/source/config/eventcfg.cxx
@@ -26,7 +26,6 @@
 #include <o3tl/enumarray.hxx>
 #include <o3tl/enumrange.hxx>
 #include <rtl/ref.hxx>
-#include <rtl/ustrbuf.hxx>
 #include <sal/log.hxx>
 
 #include "itemholder1.hxx"
@@ -194,11 +193,7 @@ void GlobalEventConfig_Impl::initBindingInfo()
     Sequence< OUString > lMacros(1);
     for (const auto& rEventName : lEventNames )
     {
-        OUStringBuffer aBuffer( 32 );
-        aBuffer.append( aSetNode );
-        aBuffer.append( rEventName );
-        aBuffer.append( aCommandKey );
-        lMacros[0] = aBuffer.makeStringAndClear();
+        lMacros[0] = aSetNode + rEventName + aCommandKey;
         SAL_INFO("unotools", "reading binding for: " << lMacros[0]);
         Sequence< Any > lValues = GetProperties( lMacros );
         OUString sMacroURL;
diff --git a/unotools/source/config/moduleoptions.cxx b/unotools/source/config/moduleoptions.cxx
index 103bf2a7bd3e..c6442a16ab9e 100644
--- a/unotools/source/config/moduleoptions.cxx
+++ b/unotools/source/config/moduleoptions.cxx
@@ -24,7 +24,6 @@
 #include <comphelper/sequence.hxx>
 #include <osl/diagnose.h>
 #include <o3tl/enumarray.hxx>
-#include <rtl/ustrbuf.hxx>
 #include <rtl/instance.hxx>
 #include <com/sun/star/uno/Any.hxx>
 #include <com/sun/star/uno/Sequence.hxx>
@@ -728,11 +727,7 @@ void SvtModuleOptions_Impl::MakeReadonlyStatesAvailable()
     css::uno::Sequence< OUString > lFactories = GetNodeNames(OUString());
     std::transform(lFactories.begin(), lFactories.end(), lFactories.begin(),
         [](const OUString& rFactory) -> OUString {
-            OUStringBuffer sPath(256);
-            sPath.append(rFactory                  );
-            sPath.append(PATHSEPARATOR             );
-            sPath.append(PROPERTYNAME_DEFAULTFILTER);
-            return sPath.makeStringAndClear();
+            return rFactory + PATHSEPARATOR PROPERTYNAME_DEFAULTFILTER;
         });
 
     css::uno::Sequence< sal_Bool > lReadonlyStates = GetReadOnlyStates(lFactories);
diff --git a/unotools/source/config/syslocaleoptions.cxx b/unotools/source/config/syslocaleoptions.cxx
index f3942f5b7c4d..7cbb817ee1bf 100644
--- a/unotools/source/config/syslocaleoptions.cxx
+++ b/unotools/source/config/syslocaleoptions.cxx
@@ -18,7 +18,6 @@
  */
 
 #include <com/sun/star/uno/Sequence.hxx>
-#include <rtl/ustrbuf.hxx>
 #include <rtl/instance.hxx>
 #include <sal/log.hxx>
 #include <i18nlangtag/mslangid.hxx>
@@ -660,11 +659,7 @@ OUString SvtSysLocaleOptions::CreateCurrencyConfigString(
     OUString aIsoStr( LanguageTag::convertToBcp47( eLang ) );
     if ( !aIsoStr.isEmpty() )
     {
-        OUStringBuffer aStr( rAbbrev.getLength() + 1 + aIsoStr.getLength() );
-        aStr.append( rAbbrev );
-        aStr.append( '-' );
-        aStr.append( aIsoStr );
-        return aStr.makeStringAndClear();
+        return rAbbrev + "-" + aIsoStr;
     }
     else
         return rAbbrev;