Hi Vitaly, Yes. It's a bug (ticket ZMQII-21). Thanks for reporting it! Martin Vitaly Mayatskikh wrote: > Hi! > > When I call zmq_init(..., ZMQ_POLL), create a socket, bind it, then > zmq_close fails with: > > Assertion failed: false (fd_signaler.cpp:72) > > It doesn't fail w/o call to zmq_bind before zmq_close.