[Libreoffice-commits] core.git: chart2/source

[Eike Rathke]

 chart2/source/tools/ExplicitCategoriesProvider.cxx |   24 +++++++++++++--------
 1 file changed, 15 insertions(+), 9 deletions(-)

New commits:
commit d1ba2cd612a4c39976e2980c7dc4e3fa38c88470
Author: Eike Rathke <erack at redhat.com>
Date:   Tue Feb 19 19:22:27 2013 +0100

    do not access vector elements beyond size, rhbz#847519 related
    
    The actual bug (crash) is not triggered anymore because the categories
    are assembled differently, nevertheless the code in question could
    expose the same behavior under different preconditions.
    
    Change-Id: Ic37f6b34effaf4e5252e80aab46b021547b36efb

diff --git a/chart2/source/tools/ExplicitCategoriesProvider.cxx b/chart2/source/tools/ExplicitCategoriesProvider.cxx
index b1a5255..538a9d0 100644
--- a/chart2/source/tools/ExplicitCategoriesProvider.cxx
+++ b/chart2/source/tools/ExplicitCategoriesProvider.cxx
@@ -353,11 +353,14 @@ Sequence< OUString > lcl_getExplicitSimpleCategories(
         }
         for( aOuterIt=rComplexCats.begin(); aOuterIt != aOuterEnd; ++aOuterIt )
         {
-            sal_Int32 nCurrentCount = lcl_getCategoryCount( *aOuterIt );
-            if( nCurrentCount< nMaxCategoryCount )
+            if ( !aOuterIt->empty() )
             {
-                ComplexCategory& rComplexCategory = aOuterIt->back();
-                rComplexCategory.Count += (nMaxCategoryCount-nCurrentCount);
+                sal_Int32 nCurrentCount = lcl_getCategoryCount( *aOuterIt );
+                if( nCurrentCount< nMaxCategoryCount )
+                {
+                    ComplexCategory& rComplexCategory = aOuterIt->back();
+                    rComplexCategory.Count += (nMaxCategoryCount-nCurrentCount);
+                }
             }
         }
     }
@@ -389,12 +392,15 @@ Sequence< OUString > lcl_getExplicitSimpleCategories(
             OUString aText;
             for( aOuterIt=aComplexCatsPerIndex.begin() ; aOuterIt != aOuterEnd; ++aOuterIt )
             {
-                OUString aAddText = (*aOuterIt)[nN].Text;
-                if( !aAddText.isEmpty() )
+                if ( static_cast<size_t>(nN) < aOuterIt->size() )
                 {
-                    if(!aText.isEmpty())
-                        aText += aSpace;
-                    aText += aAddText;
+                    OUString aAddText = (*aOuterIt)[nN].Text;
+                    if( !aAddText.isEmpty() )
+                    {
+                        if(!aText.isEmpty())
+                            aText += aSpace;
+                        aText += aAddText;
+                    }
                 }
             }
             aRet[nN]=aText;