diff --git a/clang/include/clang/AST/CFG.h b/clang/include/clang/AST/CFG.h
index 054358875c9cf8676914419341e53eeb39b58be1..8fc65ef4360e69b69699d1b7ff462225aa97b4e1 100644
--- a/clang/include/clang/AST/CFG.h
+++ b/clang/include/clang/AST/CFG.h
@@ -103,7 +103,10 @@ public:
   
   unsigned                     size()        const { return Stmts.size();    }
   bool                         empty()       const { return Stmts.empty();   }
-    
+
+  Stmt*& operator[](size_t i)        { assert (i < size()); return Stmts[i]; }
+  Stmt*  operator[](size_t i) const  { assert (i < size()); return Stmts[i]; }
+  
   // CFG iterators
   typedef AdjacentBlocks::iterator                              pred_iterator;
   typedef AdjacentBlocks::const_iterator                  const_pred_iterator;