diff -r b64e2478992a boost/geometry/algorithms/detail/overlay/traverse.hpp
--- a/boost/geometry/algorithms/detail/overlay/traverse.hpp	Thu Jan 03 15:00:28 2013 +0100
+++ b/boost/geometry/algorithms/detail/overlay/traverse.hpp	Tue Jan 22 17:55:46 2013 +0100
@@ -356,7 +356,9 @@
                                                 "Dead end",
                                                 geometry1, geometry2, state);
                                         }
-                                        detail::overlay::debug_traverse(*current, *current_iit, "Selected  ");
+                                        else {
+                                            detail::overlay::debug_traverse(*current, *current_iit, "Selected  ");
+                                        }
 
                                         if (i++ > 2 + 2 * turns.size())
                                         {