[Pharo-users] Return value of a FFI call to a external function is its 2`s complement

[Paulo R. Dellani]

Dear uFFI experts,

I am dealing with the port of the ZeroMQ
<http://smalltalkhub.com/#%21/%7Epanuw/zeromq> code to Pharo 6 and found
something unexpected to me, at least:

Zmq4Api>>apiZmqMsgRecv: message socket: socket withFlags: flags
    ^ self ffiCall: #(long zmq_msg_recv (ZmqApiMessage* message,
ZmqApiSocket* socket, long flags ) )

Calling this returns the 2's complement of the return value
of the external function call. Is it expected that the code calling
this do the decoding of the 2'complement representation of
the return value?

Cheers,

Paulo