Index: boost/thread/locks.hpp
===================================================================
--- boost/thread/locks.hpp	(revision 70997)
+++ boost/thread/locks.hpp	(working copy)
@@ -1478,7 +1478,7 @@
             range_lock_guard(Iterator begin_,Iterator end_):
                 begin(begin_),end(end_)
             {
-                lock(begin,end);
+                boost::lock(begin,end);
             }
             
             void release()
@@ -1510,7 +1510,7 @@
             {
                 return begin;
             }
-            Iterator const failed=try_lock(++begin,end);
+            Iterator const failed=boost::try_lock(++begin,end);
             if(failed==end)
             {
                 guard.release();
@@ -1543,7 +1543,7 @@
                 if(start_with_begin)
                 {
                     begin_lock.lock();
-                    Iterator const failed_lock=try_lock(next,end);
+                    Iterator const failed_lock=boost::try_lock(next,end);
                     if(failed_lock==end)
                     {
                         begin_lock.release();
@@ -1557,7 +1557,7 @@
                     detail::range_lock_guard<Iterator> guard(next,end);
                     if(begin_lock.try_lock())
                     {
-                        Iterator const failed_lock=try_lock(second,next);
+                        Iterator const failed_lock=boost::try_lock(second,next);
                         if(failed_lock==next)
                         {
                             begin_lock.release();