1 files changed, 5 insertions, 1 deletions
diff --git a/WebCore/svg/SVGList.h b/WebCore/svg/SVGList.h
index d4f7641..5381598 100644
--- a/WebCore/svg/SVGList.h
+++ b/WebCore/svg/SVGList.h
@@ -96,7 +96,11 @@ namespace WebCore {
 
         Item insertItemBefore(Item newItem, unsigned int index, ExceptionCode&)
         {
-            m_vector.insert(index, newItem);
+            if (index < m_vector.size()) {
+                m_vector.insert(index, newItem);
+            } else {
+                m_vector.append(newItem);
+            }
             return newItem;
         }