Package: zeromq3
Version: 4.0.5+dfsg-3
Severity: important
User: [email protected]
Usertags: ftbfs-gcc-6

This package fails to build with GCC 6.  GCC 6 has not been released
yet, but it's expected that GCC 6 will become the default compiler for
stretch.

Note that only the first error is reported; there might be more.  You
can find a snapshot of GCC 6 in experimental.  To build with GCC 6,
you can set CC=gcc-6 CXX=g++-6 explicitly.

You may be able to find out more about this issue at
https://gcc.gnu.org/gcc-6/changes.html

> sbuild (Debian sbuild) 0.67.0 (26 Dec 2015) on dl580gen9-02.hlinux
...
> libtool: compile:  g++ -DHAVE_CONFIG_H -I. -pedantic -Werror -Wall 
> -D_GNU_SOURCE -D_REENTRANT -D_THREAD_SAFE -Wdate-time -D_FORTIFY_SOURCE=2 
> -DZMQ_FORCE_EPOLL -I/usr/include/pgm-5.1 -I/usr/lib/pgm-5.1/include 
> -fvisibility=hidden -g -O2 -fstack-protector-strong -Wformat 
> -Werror=format-security -c zmq.cpp  -fPIC -DPIC -o .libs/libzmq_la-zmq.o
> zmq.cpp: In function 'int zmq_recviov(void*, iovec*, size_t*, int)':
> zmq.cpp:559:49: error: dereferencing type-punned pointer will break 
> strict-aliasing rules [-Werror=strict-aliasing]
>          recvmore = ((zmq::msg_t*) (void *) &msg)->flags () & 
> zmq::msg_t::more;
>                                                  ^~
> 
> cc1plus: all warnings being treated as errors
> Makefile:1204: recipe for target 'libzmq_la-zmq.lo' failed

-- 
Martin Michlmayr
Linux for HPE Helion, Hewlett Packard Enterprise

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