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, 11 insertions, 5 deletions

diff --git a/src/command.hpp b/src/command.hpp
index ecf2d93..8378369 100644
--- a/src/command.hpp
+++ b/src/command.hpp
@@ -27,12 +27,18 @@
 namespace zmq
 {
 
+    class object_t;
+    class own_t;
+    struct i_engine;
+    class pipe_t;
+    class socket_base_t;
+
     //  This structure defines the commands that can be sent between threads.
 
     struct command_t
     {
         //  Object to process the command.
-        class object_t *destination;
+        zmq::object_t *destination;
 
         enum type_t
         {
@@ -67,7 +73,7 @@ namespace zmq
 
             //  Sent to socket to let it know about the newly created object.
             struct {
-                class own_t *object;
+                zmq::own_t *object;
             } own;
 
             //  Attach the engine to the session. If engine is NULL, it informs
@@ -79,7 +85,7 @@ namespace zmq
             //  Sent from session to socket to establish pipe(s) between them.
             //  Caller have used inc_seqnum beforehand sending the command.
             struct {
-                class pipe_t *pipe;
+                zmq::pipe_t *pipe;
             } bind;
 
             //  Sent by pipe writer to inform dormant pipe reader that there
@@ -112,7 +118,7 @@ namespace zmq
             //  Sent by I/O object ot the socket to request the shutdown of
             //  the I/O object.
             struct {
-                class own_t *object;
+                zmq::own_t *object;
             } term_req;
 
             //  Sent by socket to I/O object to start its shutdown.
@@ -128,7 +134,7 @@ namespace zmq
             //  Transfers the ownership of the closed socket
             //  to the reaper thread.
             struct {
-                class socket_base_t *socket;
+                zmq::socket_base_t *socket;
             } reap;
 
             //  Closed socket notifies the reaper that it's already deallocated.