Martin Panter added the comment: Michael, byref() is just a helper for passing an object’s address to a C function. Calling func(byref(b), ...) in Python is equivalent to the C code
unpack_bitfields(&b, ...) I still think the root problem is in unpack_bitfields(). When compiled with XLC, your experiments confirm that it always returns unsigned values, and with GCC, it returns signed values. It looks like you can detect XLC with the __IBMC__ and __xlC__ macros (not sure if there is a practical difference). So perhaps we can fix this with #ifndef __xlC__ ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27643> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
