recursive ctypes structures make numba fail to compile

gistfile1.pytb

 line 91, in from_ctypes_type
    return from_ctypes_type(ctypes_type._type_).pointer()
  File "c:\soft\Python27-32b\Lib\site-packages\numba\support\ctypes_support.py",
 line 97, in from_ctypes_type
    for name, field_type in ctypes_type._fields_]
  File "c:\soft\Python27-32b\Lib\site-packages\numba\support\ctypes_support.py",
 line 91, in from_ctypes_type
    return from_ctypes_type(ctypes_type._type_).pointer()
  File "c:\soft\Python27-32b\Lib\site-packages\numba\support\ctypes_support.py",
 line 88, in from_ctypes_type
    if numba.utils.hashable(ctypes_type) and ctypes_type in ctypes_map:
RuntimeError: maximum recursion depth exceeded

recursive_ctypes_struct.py

from ctypes import pythonapi, Structure, POINTER
from numba import autojit


class PyInterpreterState(Structure):
    pass
    
class PyThreadState(Structure):
    pass

PyThreadState._fields_ = [
    ("next", POINTER(PyThreadState)),
    ("interp", POINTER(PyInterpreterState))
    # ...
]

savethread = pythonapi.PyEval_SaveThread
savethread.argtypes = []
savethread.restype = POINTER(PyThreadState)

restorethread = pythonapi.PyEval_RestoreThread
restorethread.argtypes = [POINTER(PyThreadState)]
restorethread.restype = None

@autojit
def test_gil():
    threadstate = savethread()
    restorethread(threadstate)

test_gil()