Make cppcheck not complain about "'operator=' should return something"

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

src/array.hpp

@@ -59,7 +59,7 @@ namespace zmq
         int array_index;
 
         array_item_t (const array_item_t&);
-        void operator = (const array_item_t&);
+        const array_item_t &operator = (const array_item_t&);
     };
 
     //  Fast array implementation with O(1) access to item, insertion and
@@ -138,7 +138,7 @@ namespace zmq
         items_t items;
 
         array_t (const array_t&);
-        void operator = (const array_t&);
+        const array_t &operator = (const array_t&);
     };
 
 }

src/atomic_counter.hpp

@@ -140,7 +140,7 @@ namespace zmq
 #endif
 
         atomic_counter_t (const atomic_counter_t&);
-        void operator = (const atomic_counter_t&);
+        const atomic_counter_t& operator = (const atomic_counter_t&);
     };
 
 }

src/atomic_ptr.hpp

@@ -135,7 +135,7 @@ namespace zmq
 #endif
 
         atomic_ptr_t (const atomic_ptr_t&);
-        void operator = (const atomic_ptr_t&);
+        const atomic_ptr_t &operator = (const atomic_ptr_t&);
     };
 
 }

src/clock.hpp

@@ -51,7 +51,7 @@ namespace zmq
         uint64_t last_time;
 
         clock_t (const clock_t&);
-        void operator = (const clock_t&);
+        const clock_t &operator = (const clock_t&);
     };
 
 }

src/connect_session.hpp

@@ -56,7 +56,7 @@ namespace zmq
         std::string address;
 
         connect_session_t (const connect_session_t&);
-        void operator = (const connect_session_t&);
+        const connect_session_t &operator = (const connect_session_t&);
     };
 
 }

src/ctx.hpp

@@ -143,7 +143,7 @@ namespace zmq
         mutex_t log_sync;
 
         ctx_t (const ctx_t&);
-        void operator = (const ctx_t&);
+        const ctx_t &operator = (const ctx_t&);
     };
     
 }

src/decoder.hpp

@@ -167,7 +167,7 @@ namespace zmq
         unsigned char *buf;
 
         decoder_base_t (const decoder_base_t&);
-        void operator = (const decoder_base_t&);
+        const decoder_base_t &operator = (const decoder_base_t&);
     };
 
     //  Decoder for 0MQ framing protocol. Converts data batches into messages.

src/devpoll.hpp

@@ -88,7 +88,7 @@ namespace zmq
         thread_t worker;
 
         devpoll_t (const devpoll_t&);
-        void operator = (const devpoll_t&);
+        const devpoll_t &operator = (const devpoll_t&);
     };
 
 }

src/encoder.hpp

@@ -175,7 +175,7 @@ namespace zmq
         unsigned char tmpbuf [10];
 
         encoder_t (const encoder_t&);
-        void operator = (const encoder_t&);
+        const encoder_t &operator = (const encoder_t&);
     };
 }
 

src/epoll.hpp

@@ -85,7 +85,7 @@ namespace zmq
         thread_t worker;
 
         epoll_t (const epoll_t&);
-        void operator = (const epoll_t&);
+        const epoll_t &operator = (const epoll_t&);
     };
 
 }

src/fq.hpp

@@ -71,7 +71,7 @@ namespace zmq
         bool terminating;
 
         fq_t (const fq_t&);
-        void operator = (const fq_t&);
+        const fq_t &operator = (const fq_t&);
     };
 
 }

src/io_object.hpp

@@ -69,7 +69,7 @@ namespace zmq
         poller_t *poller;
 
         io_object_t (const io_object_t&);
-        void operator = (const io_object_t&);
+        const io_object_t &operator = (const io_object_t&);
     };
 
 }

src/kqueue.hpp

@@ -92,7 +92,7 @@ namespace zmq
         thread_t worker;
 
         kqueue_t (const kqueue_t&);
-        void operator = (const kqueue_t&);
+        const kqueue_t &operator = (const kqueue_t&);
     };
 
 }

src/lb.hpp

@@ -67,7 +67,7 @@ namespace zmq
         bool terminating;
 
         lb_t (const lb_t&);
-        void operator = (const lb_t&);
+        const lb_t &operator = (const lb_t&);
     };
 
 }

src/mailbox.hpp

@@ -53,7 +53,7 @@ namespace zmq
 
         //  Disable copying of mailbox_t object.
         mailbox_t (const mailbox_t&);
-        void operator = (const mailbox_t&);
+        const mailbox_t &operator = (const mailbox_t&);
     };
 
 }

src/mutex.hpp

@@ -110,7 +110,7 @@ namespace zmq
  
         // Disable copy construction and assignment.
         mutex_t (const mutex_t&);
-        void operator = (const mutex_t&);
+        const mutex_t &operator = (const mutex_t&);
     };
  
 }

src/named_session.hpp

@@ -48,7 +48,7 @@ namespace zmq
         blob_t name;
 
         named_session_t (const named_session_t&);
-        void operator = (const named_session_t&);
+        const named_session_t &operator = (const named_session_t&);
     };
 
 }

src/object.hpp

@@ -116,7 +116,7 @@ namespace zmq
         void send_command (command_t &cmd_);
 
         object_t (const object_t&);
-        void operator = (const object_t&);
+        const object_t &operator = (const object_t&);
     };
 
 }

src/own.hpp

@@ -131,7 +131,7 @@ namespace zmq
         int term_acks;
 
         own_t (const own_t&);
-        void operator = (const own_t&);
+        const own_t &operator = (const own_t&);
     };
 
 }

src/pair.hpp

@@ -67,7 +67,7 @@ namespace zmq
         bool terminating;
 
         pair_t (const pair_t&);
-        void operator = (const pair_t&);
+        const pair_t &operator = (const pair_t&);
     };
 
 }

src/pgm_receiver.hpp

@@ -118,7 +118,7 @@ namespace zmq
         handle_t pipe_handle;
 
         pgm_receiver_t (const pgm_receiver_t&);
-        void operator = (const pgm_receiver_t&);
+        const pgm_receiver_t &operator = (const pgm_receiver_t&);
     };
 
 }

src/pgm_sender.hpp

@@ -95,7 +95,7 @@ namespace zmq
         size_t write_size;
 
         pgm_sender_t (const pgm_sender_t&);
-        void operator = (const pgm_sender_t&);
+        const pgm_sender_t &operator = (const pgm_sender_t&);
     };
 
 }

src/pipe.hpp

@@ -113,7 +113,7 @@ namespace zmq
         bool terminating;
 
         reader_t (const reader_t&);
-        void operator = (const reader_t&);
+        const reader_t &operator = (const reader_t&);
     };
 
     struct i_writer_events
@@ -205,7 +205,7 @@ namespace zmq
         bool terminating;
 
         writer_t (const writer_t&);
-        void operator = (const writer_t&);
+        const writer_t &operator = (const writer_t&);
     };
 
 }

src/poll.hpp

@@ -92,7 +92,7 @@ namespace zmq
         thread_t worker;
 
         poll_t (const poll_t&);
-        void operator = (const poll_t&);
+        const poll_t &operator = (const poll_t&);
     };
 
 }

src/poller_base.hpp

@@ -75,7 +75,7 @@ namespace zmq
         atomic_counter_t load;
 
         poller_base_t (const poller_base_t&);
-        void operator = (const poller_base_t&);
+        const poller_base_t &operator = (const poller_base_t&);
     };
 
 }

src/pub.hpp

@@ -35,7 +35,7 @@ namespace zmq
     private:
 
         pub_t (const pub_t&);
-        void operator = (const pub_t&);
+        const pub_t &operator = (const pub_t&);
     };
 
 }

src/pull.hpp

@@ -50,7 +50,7 @@ namespace zmq
         fq_t fq;
 
         pull_t (const pull_t&);
-        void operator = (const pull_t&);
+        const pull_t &operator = (const pull_t&);
 
     };
 

src/push.hpp

@@ -50,7 +50,7 @@ namespace zmq
         lb_t lb;
 
         push_t (const push_t&);
-        void operator = (const push_t&);
+        const push_t &operator = (const push_t&);
     };
 
 }

src/rep.hpp

@@ -49,7 +49,7 @@ namespace zmq
         bool request_begins;
 
         rep_t (const rep_t&);
-        void operator = (const rep_t&);
+        const rep_t &operator = (const rep_t&);
 
     };
 

src/req.hpp

@@ -49,7 +49,7 @@ namespace zmq
         bool message_begins;
 
         req_t (const req_t&);
-        void operator = (const req_t&);
+        const req_t &operator = (const req_t&);
     };
 
 }

src/select.hpp

@@ -106,7 +106,7 @@ namespace zmq
         thread_t worker;
 
         select_t (const select_t&);
-        void operator = (const select_t&);
+        const select_t &operator = (const select_t&);
     };
 
 }

src/semaphore.hpp

@@ -77,7 +77,7 @@ namespace zmq
         HANDLE ev;
 
         semaphore_t (const semaphore_t&);
-        void operator = (const semaphore_t&);
+        const semaphore_t &operator = (const semaphore_t&);
     };
 
 #elif defined ZMQ_HAVE_LINUX || defined ZMQ_HAVE_OSX || defined ZMQ_HAVE_OPENVMS
@@ -130,7 +130,7 @@ namespace zmq
         pthread_mutex_t mutex;
 
         semaphore_t (const semaphore_t&);
-        void operator = (const semaphore_t&);
+        const semaphore_t &operator = (const semaphore_t&);
     };
 
 #else
@@ -175,7 +175,7 @@ namespace zmq
         sem_t sem;
 
         semaphore_t (const semaphore_t&);
-        void operator = (const semaphore_t&);
+        const semaphore_t &operator = (const semaphore_t&);
     };
 
 #endif

src/session.hpp

@@ -141,7 +141,7 @@ namespace zmq
         } state;
 
         session_t (const session_t&);
-        void operator = (const session_t&);
+        const session_t &operator = (const session_t&);
     };
 
 }

src/socket_base.hpp

@@ -173,7 +173,7 @@ namespace zmq
         mutex_t sessions_sync;
 
         socket_base_t (const socket_base_t&);
-        void operator = (const socket_base_t&);
+        const socket_base_t &operator = (const socket_base_t&);
     };
 
 }

src/sub.hpp

@@ -41,7 +41,7 @@ namespace zmq
     private:
 
         sub_t (const sub_t&);
-        void operator = (const sub_t&);
+        const sub_t &operator = (const sub_t&);
     };
 
 }

src/swap.hpp

@@ -111,6 +111,10 @@ namespace zmq
         char *write_buf;
 
         int64_t write_buf_start_addr;
+
+        //  Disable copying of the swap object.
+        swap_t (const swap_t&);
+        const swap_t &operator = (const swap_t&);
     };
 
 }

src/tcp_connecter.hpp

@@ -72,7 +72,7 @@ namespace zmq
         fd_t s;
 
         tcp_connecter_t (const tcp_connecter_t&);
-        void operator = (const tcp_connecter_t&);
+        const tcp_connecter_t &operator = (const tcp_connecter_t&);
     };
 
 }

src/tcp_listener.hpp

@@ -64,7 +64,7 @@ namespace zmq
         fd_t s;
 
         tcp_listener_t (const tcp_listener_t&);
-        void operator = (const tcp_listener_t&);
+        const tcp_listener_t &operator = (const tcp_listener_t&);
     };
 
 }

src/tcp_socket.hpp

@@ -63,7 +63,7 @@ namespace zmq
 
         //  Disable copy construction of tcp_socket.
         tcp_socket_t (const tcp_socket_t&);
-        void operator = (const tcp_socket_t&);
+        const tcp_socket_t &operator = (const tcp_socket_t&);
     };
 
 }

src/thread.hpp

@@ -69,7 +69,7 @@ namespace zmq
 #endif
 
         thread_t (const thread_t&);
-        void operator = (const thread_t&);
+        const thread_t &operator = (const thread_t&);
     };
 
 }

src/transient_session.hpp

@@ -43,7 +43,7 @@ namespace zmq
         void detached ();
 
         transient_session_t (const transient_session_t&);
-        void operator = (const transient_session_t&);
+        const transient_session_t &operator = (const transient_session_t&);
     };
 
 }

src/trie.hpp

@@ -49,7 +49,7 @@ namespace zmq
         } next;
 
         trie_t (const trie_t&);
-        void operator = (const trie_t&);
+        const trie_t &operator = (const trie_t&);
     };
 
 }

src/xpub.hpp

@@ -65,7 +65,7 @@ namespace zmq
         bool terminating;
 
         xpub_t (const xpub_t&);
-        void operator = (const xpub_t&);
+        const xpub_t &operator = (const xpub_t&);
     };
 
 }

src/xrep.hpp

@@ -106,7 +106,7 @@ namespace zmq
         bool terminating;
 
         xrep_t (const xrep_t&);
-        void operator = (const xrep_t&);
+        const xrep_t &operator = (const xrep_t&);
     };
 
 }

src/xreq.hpp

@@ -55,7 +55,7 @@ namespace zmq
         lb_t lb;
 
         xreq_t (const xreq_t&);
-        void operator = (const xreq_t&);
+        const xreq_t &operator = (const xreq_t&);
     };
 
 }

src/xsub.hpp

@@ -70,7 +70,7 @@ namespace zmq
         bool more;
 
         xsub_t (const xsub_t&);
-        void operator = (const xsub_t&);
+        const xsub_t &operator = (const xsub_t&);
     };
 
 }

src/ypipe.hpp

@@ -200,7 +200,7 @@ namespace zmq
 
         //  Disable copying of ypipe object.
         ypipe_t (const ypipe_t&);
-        void operator = (const ypipe_t&);
+        const ypipe_t &operator = (const ypipe_t&);
     };
 
 }

src/yqueue.hpp

@@ -189,7 +189,7 @@ namespace zmq
 
         //  Disable copying of yqueue.
         yqueue_t (const yqueue_t&);
-        void operator = (const yqueue_t&);
+        const yqueue_t &operator = (const yqueue_t&);
     };
 
 }

src/zmq_connecter.hpp

@@ -75,7 +75,7 @@ namespace zmq
         class session_t *session;
 
         zmq_connecter_t (const zmq_connecter_t&);
-        void operator = (const zmq_connecter_t&);
+        const zmq_connecter_t &operator = (const zmq_connecter_t&);
     };
 
 }

src/zmq_engine.hpp

@@ -78,7 +78,7 @@ namespace zmq
         bool plugged;
 
         zmq_engine_t (const zmq_engine_t&);
-        void operator = (const zmq_engine_t&);
+        const zmq_engine_t &operator = (const zmq_engine_t&);
     };
 
 }

src/zmq_init.hpp

@@ -84,7 +84,7 @@ namespace zmq
         class io_thread_t *io_thread;
 
         zmq_init_t (const zmq_init_t&);
-        void operator = (const zmq_init_t&);
+        const zmq_init_t &operator = (const zmq_init_t&);
     };
 
 }

src/zmq_listener.hpp

@@ -58,7 +58,7 @@ namespace zmq
         class socket_base_t *socket;
 
         zmq_listener_t (const zmq_listener_t&);
-        void operator = (const zmq_listener_t&);
+        const zmq_listener_t &operator = (const zmq_listener_t&);
     };
 
 }