fails to compile with Cython 0.19

[cpcloud]

I'm using arch linux with zmq version 3.2.2-2. I get the following error

zmq/core/message.pyx:49:30: Name '_check_rc' not declared in module 'zmq.core.checkrc'

Of course, it IS there but it's declared inline, which I think might be the issue although I'm not sure exactly why that would be. I know the pandas project has had some compilation issues with inlining Cython functions in the past, see pandas-dev/pandas#2188 for more info.

[minrk]

What's your Cython version?

[cpcloud]

0.19-dev

[minrk]

and this is pyzmq master?

[minrk]

Yup, Cython bug (or deliberate change, still unclear), and fixed by cython/cython#195. If that is rejected, the pyzmq fix is a single line, but I'd rather not apply it unless I hear that the new behavior is actually intentional for some reason.

[minrk]

As an aside, the inline function error is a red herring - the first error coming out of a compiler is often the only one that matters, in this case:

zmq/utils/buffers.pxd:165:27: default encoding required for conversion from 'char *' to 'str object'

which precedes the _check_rc message, which isn't an error at all, rather a symptom of invalid compiler state due to the first real error.

[minrk]

Looks like the new error is on purpose, so the appropriate patch is applied, and the build now works with latest Cython dev.