Good news! The change for including the Py_TPFLAGS_HAVE_VERSION_TAG
for cython types by default is trivial and will likely make it into
cython 0.19. See:
https://groups.google.com/group/cython-users/browse_thread/thread/5110f344ea2e6e86?hl=en
To see what kind of effect we can expect in sage I
Le 07/04/2013 22:43, Nils Bruin a écrit :
We should upgrade to Cython 0.19 as soon as it's out. Or if someone
feels like it, we can already patch the cython in sage.
Both sound good.
Congrats for your success ; and congrats for also pushing it upstream
instead of letting it bitrot in sage!
Yay! with a little digging around I think I know what feature cython-
derived classes are missing that pure python classes do have: It's the
Py_TPFLAGS_VALID_VERSION_TAG feature, which gets used in the method
cache. in _PyType_Lookup (python source: typeobject.c)
Evidence obtained with the
