Index: pthread/thread.cpp
===================================================================
--- pthread/thread.cpp	(revision 53346)
+++ pthread/thread.cpp	(working copy)
@@ -199,6 +199,19 @@
             throw thread_resource_error();
         }
     }
+#ifdef BOOST_THREAD_HAS_THREAD_ATTR
+    void thread::start_thread(thread_attributes& attr)
+    {
+        thread_info->self=thread_info;
+        thread_attributes::native_handle_type h = attr.native_handle();
+        int const res = pthread_create(&thread_info->thread_handle, &h, &thread_proxy, thread_info.get());
+        if (res != 0)
+        {
+            thread_info->self.reset();
+            throw thread_resource_error();
+        }
+    }
+#endif
 
     thread::~thread()
     {