Index: clang/lib/Format/UnwrappedLineFormatter.cpp
===================================================================
--- clang/lib/Format/UnwrappedLineFormatter.cpp
+++ clang/lib/Format/UnwrappedLineFormatter.cpp
@@ -1017,9 +1017,9 @@
     QueueType Queue;
 
     // Insert start element into queue.
-    StateNode *Node =
+    StateNode *RootNode =
         new (Allocator.Allocate()) StateNode(InitialState, false, nullptr);
-    Queue.push(QueueItem(OrderedPenalty(0, Count), Node));
+    Queue.push(QueueItem(OrderedPenalty(0, Count), RootNode));
     ++Count;
 
     unsigned Penalty = 0;