coverity#1078537 Division or modulo by zero

Change-Id: I63e8168efe169e506b3be65ca150a779404f0885

sw/source/core/doc/htmltbl.cxx

@@ -40,6 +40,7 @@
 #include "htmltbl.hxx"
 #include "ndindex.hxx"
 #include "switerator.hxx"
+#include <o3tl/numeric.hxx>
 #include <boost/foreach.hpp>
 #ifdef DBG_UTIL
 #include "tblrwcl.hxx"
@@ -1417,10 +1418,12 @@ void SwHTMLTableLayout::AutoLayoutPass2( sal_uInt16 nAbsAvail, sal_uInt16 nRelAv
             }
             OSL_ENSURE( nCols==nFixedCols, "Missed a column!" );
         }
-        else
+        else if (nCols > 0)
         {
+            if (nMax == 0)
+                throw o3tl::divide_by_zero();
             // No. So distribute the space regularly among all columns.
-            for( sal_uInt16 i=0; i<nCols; i++ )
+            for (sal_uInt16 i=0; i < nCols; ++i)
             {
                 sal_uLong nColMax = GetColumn( i )->GetMax();
                 GetColumn( i )->SetAbsColWidth(

sw/source/core/doc/tblrwcl.cxx

@@ -55,6 +55,7 @@
 #include <poolfmt.hxx>
 #include <tblrwcl.hxx>
 #include <unochart.hxx>
+#include <o3tl/numeric.hxx>
 #include <boost/shared_ptr.hpp>
 #include <boost/scoped_ptr.hpp>
 #include <boost/foreach.hpp>
@@ -1904,6 +1905,8 @@ static void lcl_CopyBoxToDoc(_FndBox const& rFndBox, _CpyPara *const pCpyPara)
     {
         nRealSize = pCpyPara->nNewSize;
         nRealSize *= rFndBox.GetBox()->GetFrmFmt()->GetFrmSize().GetWidth();
+        if (pCpyPara->nOldSize == 0)
+            throw o3tl::divide_by_zero();
         nRealSize /= pCpyPara->nOldSize;
     }
 

sw/source/core/docnode/ndtbl.cxx

@@ -2968,14 +2968,14 @@ bool SwCollectTblLineBoxes::Resize( sal_uInt16 nOffset, sal_uInt16 nOldWidth )
         aPosArr.erase( aPosArr.begin(), aPosArr.begin() + n );
         m_Boxes.erase(m_Boxes.begin(), m_Boxes.begin() + n);
 
-        size_t nSize = aPosArr.size();
-        if (nSize)
+        size_t nArrSize = aPosArr.size();
+        if (nArrSize)
         {
             if (nOldWidth == 0)
                 throw o3tl::divide_by_zero();
 
             // Adapt the positions to the new Size
-            for( n = 0; n < nSize; ++n )
+            for( n = 0; n < nArrSize; ++n )
             {
                 sal_uLong nSize = nWidth;
                 nSize *= ( aPosArr[ n ] - nOffset );