# 
# 
# patch "database.cc"
#  from [40ff00daadefb82b98ce4e263753f5e8130910af]
#    to [41f0bb22b3f1b923b195898dda3885e0f8376999]
# 
============================================================
--- database.cc	40ff00daadefb82b98ce4e263753f5e8130910af
+++ database.cc	41f0bb22b3f1b923b195898dda3885e0f8376999
@@ -913,7 +913,7 @@
 extend_path_if_not_cycle(string table_name, 
                          shared_ptr<version_path> p, 
                          hexenc<id> const & ext,
-                         set< hexenc<id> > seen_nodes,
+                         set< hexenc<id> > & seen_nodes,
                          vector< shared_ptr<version_path> > & next_paths)
 {
   for (version_path::const_iterator i = p->begin(); i != p->end(); ++i)