From 94f1f6025c65867742e2fe52d7a07fe3f6b99faa Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 7 Sep 2004 10:45:22 +0000
Subject: [PATCH] Added a size check on heap_array<T, CmpT>::Adjust(size_t i)
 to prevent access errors.

---
 src/osgUtil/TriStrip_heap_array.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/osgUtil/TriStrip_heap_array.h b/src/osgUtil/TriStrip_heap_array.h
index 22f5c3fc7..78f8e5e92 100644
--- a/src/osgUtil/TriStrip_heap_array.h
+++ b/src/osgUtil/TriStrip_heap_array.h
@@ -234,7 +234,10 @@ inline void heap_array<T, CmpT>::update(size_t i, const T & Elem) {
 
 
 template <class T, class CmpT> 
-inline void heap_array<T, CmpT>::Adjust(size_t i) {
+inline void heap_array<T, CmpT>::Adjust(size_t i)
+{
+    if (m_Heap.size()<=1) return; // nothing to swap, so just return.
+
     size_t j;
 
     // Check the upper part of the heap