Index: boost/thread/detail/thread.hpp
===================================================================
--- boost/thread/detail/thread.hpp	(revision 61257)
+++ boost/thread/detail/thread.hpp	(working copy)
@@ -147,7 +147,7 @@
 #endif
         struct dummy;
     public:
-#ifdef __SUNPRO_CC 
+#if BOOST_WORKAROUND(__SUNPRO_CC, < 0x5100)
         thread(const volatile thread&); 
 #endif 
         thread();
@@ -217,7 +217,7 @@
             x->thread_info.reset();
         }
        
-#ifdef __SUNPRO_CC 
+#if BOOST_WORKAROUND(__SUNPRO_CC, < 0x5100)
         thread& operator=(thread x) 
         { 
             swap(x);