Index: boost/coroutine/detail/coroutine_op.hpp
===================================================================
--- boost/coroutine/detail/coroutine_op.hpp	(revision 82791)
+++ boost/coroutine/detail/coroutine_op.hpp	(working copy)
@@ -81,8 +81,8 @@
         }
 
     public:
-        typedef typename std::iterator_traits< iterator >::pointer      pointer_t;
-        typedef typename std::iterator_traits< iterator >::reference    reference_t;
+        typedef typename iterator::pointer      pointer_t;
+        typedef typename iterator::reference    reference_t;
 
         iterator() :
             dp_( 0), val_()
@@ -152,8 +152,8 @@
         }
 
     public:
-        typedef typename std::iterator_traits< iterator >::pointer      pointer_t;
-        typedef typename std::iterator_traits< iterator >::reference    reference_t;
+        typedef typename const_iterator::pointer      pointer_t;
+        typedef typename const_iterator::reference    reference_t;
 
         const_iterator() :
             dp_( 0), val_()