Cro::ZeroMQ (which uses Net::ZMQ) tests segfault.

[sjn]

I've been trying out Cro, and bump into a segfaulting issue when running Cro::ZeroMQ's test suite (see [1]). They say this is probably because I'm using version 4.2 of ZeroMQ, but I can't tell which library that is actually being used.

The weird thing is that Net::ZMQ's tests go fine. No segfaults here. Does this mean Cro::ZeroMQ manages to provoke some bugs that Net::ZMQ doesn't?

If that's the case, I'd say this ought to be incorporated into Net::ZMQ's test suite. :)

As for my system; I have both 4.0, 4.1 and 4.2 packages installed, including their development versions. I'm currently running Ubuntu 17.04. I have the following zmq packages installed:

libczmq-dev
libczmq4
libzmq3-dev
libzmq5
libzmqpp-dev
libzmqpp4

How can I distinguish which version is actually used by Net::ZMQ and Cro::ZeroMQ? (This would be a useful test to add to the testsuite also).

[1] croservices/cro-zeromq#1