Merge branch 'maint'

* maint:
  zmq::select_t, zmq_poll(): assert if FD_SETSIZE reached
  zmq.h: Fix typo and use of C99 comment

Conflicts:
	src/zmq.cpp

include/zmq.h

@@ -42,13 +42,13 @@ extern "C" {
 #endif
 
 /******************************************************************************/
-/*  0MQ versioning support.                                                    */
+/*  0MQ versioning support.                                                   */
 /******************************************************************************/
 
 ZMQ_EXPORT void zmq_version (int *major, int *minor, int *patch);
 
 /******************************************************************************/
-//  0MQ errors.
+/*  0MQ errors.                                                               */
 /******************************************************************************/
 
 /*  A number random anough not to collide with different errno ranges on      */

src/select.cpp

@@ -65,6 +65,10 @@ zmq::select_t::handle_t zmq::select_t::add_fd (fd_t fd_, i_poll_events *events_)
     fd_entry_t entry = {fd_, events_};
     fds.push_back (entry);
 
+    //  Ensure we do not attempt to select () on more than FD_SETSIZE
+    //  file descriptors.
+    zmq_assert (fds.size () <= FD_SETSIZE);
+
     //  Start polling on errors.
     FD_SET (fd_, &source_set_err);
 

src/zmq.cpp

@@ -491,6 +491,10 @@ int zmq_poll (zmq_pollitem_t *items_, int nitems_, long timeout_)
 
     zmq::fd_t maxfd = 0;
 
+    //  Ensure we do not attempt to select () on more than FD_SETSIZE
+    //  file descriptors.
+    zmq_assert (nitems_ <= FD_SETSIZE);
+
     //  Build the fd_sets for passing to select ().
     for (int i = 0; i != nitems_; i++) {