diff --git a/llvm/lib/Analysis/DataStructure/DataStructure.cpp b/llvm/lib/Analysis/DataStructure/DataStructure.cpp
index 5c8b3730..0e61f03 100644
--- a/llvm/lib/Analysis/DataStructure/DataStructure.cpp
+++ b/llvm/lib/Analysis/DataStructure/DataStructure.cpp
@@ -448,7 +448,7 @@
   // Make all of the outgoing links of *NH now be outgoing links of
   // this.  This can cause recursive merging!
   // 
-  for (unsigned i = 0; i < NSize; i += DS::PointerSize) {
+  for (unsigned i = 0; i < NH.getNode()->getSize(); i += DS::PointerSize) {
     DSNodeHandle &Link = NH.getNode()->getLink(i);
     if (Link.getNode()) {
       // Compute the offset into the current node at which to