1 files changed, 3 insertions, 0 deletions
diff --git a/src/select.hpp b/src/select.hpp
index d4fff81..916b87b 100644
--- a/src/select.hpp
+++ b/src/select.hpp
@@ -77,6 +77,9 @@ namespace zmq
             struct i_poll_events *events;
         };
 
+        //  Checks if an fd_entry_t is retired.
+        static bool is_retired_fd (const fd_entry_t &entry);
+
         //  Set of file descriptors that are used to retreive
         //  information for fd_set.
         typedef std::vector <fd_entry_t> fd_set_t;