Get AIX 6.1 compiling again by making msg_t class explicit

Older versions of gcc have problems with in-line forward declarations
when there's a naming conflict with a global symbol.

Signed-off-by: AJ Lewis <aj.lewis@quantum.com>

Expand the original patch to all such forward declarations.
Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/src/poller_base.hpp b/src/poller_base.hpp
index 808ed38..c184358 100644
--- a/src/poller_base.hpp
+++ b/src/poller_base.hpp
@@ -29,6 +29,8 @@
 namespace zmq
 {
 
+    struct i_poll_events;
+
     class poller_base_t
     {
     public:
@@ -43,10 +45,10 @@ namespace zmq
         //  Add a timeout to expire in timeout_ milliseconds. After the
         //  expiration timer_event on sink_ object will be called with
         //  argument set to id_.
-        void add_timer (int timeout_, struct i_poll_events *sink_, int id_);
+        void add_timer (int timeout_, zmq::i_poll_events *sink_, int id_);
 
         //  Cancel the timer created by sink_ object with ID equal to id_.
-        void cancel_timer (struct i_poll_events *sink_, int id_);
+        void cancel_timer (zmq::i_poll_events *sink_, int id_);
 
     protected:
 
@@ -65,7 +67,7 @@ namespace zmq
         //  List of active timers.
         struct timer_info_t
         {
-            struct i_poll_events *sink;
+            zmq::i_poll_events *sink;
             int id;
         };
         typedef std::multimap <uint64_t, timer_info_t> timers_t;