SAL_WARN_IF ScCsvSplits::Insert exceeds its maximum supported size

and cast size() to sal_uInt32 in ScCsvSplits::Count()

Change-Id: I35de736702a58e82df6fe90396fe748161f1ff8d

sc/source/ui/dbgui/csvsplits.cxx

@@ -21,6 +21,8 @@
 
 #include <algorithm>
 
+#include <sal/log.hxx>
+
 bool ScCsvSplits::Insert( sal_Int32 nPos )
 {
     if (nPos < 0)
@@ -31,6 +33,9 @@ bool ScCsvSplits::Insert( sal_Int32 nPos )
     if (aIter != maVec.end() && *aIter == nPos)
         return false;
 
+    SAL_WARN_IF(maVec.size()>=static_cast<std::size_t>(SAL_MAX_UINT32-1),
+                "sc.ui", "ScCsvSplits::Insert: too many elements in vector");
+
     maVec.insert( aIter, nPos );
     return true;
 }

sc/source/ui/inc/csvsplits.hxx

@@ -68,7 +68,7 @@ public:
 
     /** Returns the number of splits. */
     sal_uInt32                  Count() const
-                                    { return maVec.size(); }
+                                    { return static_cast<sal_uInt32>(maVec.size()); }
     /** Returns the position of the specified split. */
     sal_Int32                   GetPos( sal_uInt32 nIndex ) const;
     /** Returns the position of the specified split. */