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The current ZMQ_MONITOR code does not compile in gcc 4.7, as -pedantic and -Werror are enabled, and ISO C++ doesn't allow casting between normal pointers (void*) and function pointers, as pedantically their size could be different. This caused the library not compilable. This commit workaround the problem by introducing one more indirection, i.e. instead of calling (void *)listener which is an error, we have to use *(void **)&listener which is an undefined behavior :) but works on most platforms Also, `optval_ = monitor` will not set the parameter in getsockopt(), and the extra casting caused the LHS to be an rvalue which again makes the code not compilable. The proper way is to pass a pointer of function pointer and assign with indirection, i.e. `*optval_ = monitor`. Also, fixed an asciidoc error in zmq_getsockopt.txt because the `~~~~` is too long.
Welcome ------- The 0MQ lightweight messaging kernel is a library which extends the standard socket interfaces with features traditionally provided by specialised messaging middleware products. 0MQ sockets provide an abstraction of asynchronous message queues, multiple messaging patterns, message filtering (subscriptions), seamless access to multiple transport protocols and more. Building and installation ------------------------- See the INSTALL file included with the distribution. Resources --------- Extensive documentation is provided with the distribution. Refer to doc/zmq.html, or "man zmq" after you have installed 0MQ on your system. Website: http://www.zeromq.org/ Development mailing list: zeromq-dev@lists.zeromq.org Announcements mailing list: zeromq-announce@lists.zeromq.org Git repository: http://github.com/zeromq/libzmq 0MQ developers can also be found on the IRC channel #zeromq, on the Freenode network (irc.freenode.net). Copying ------- Free use of this software is granted under the terms of the GNU Lesser General Public License (LGPL). For details see the files `COPYING` and `COPYING.LESSER` included with the 0MQ distribution.
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