- PyEval_GetFrame() is now declared to return a PyFrameObject *
  instead of a plain PyObject *.  (SF patch #686601 by Ben Laurie.)
diff --git a/Python/pystate.c b/Python/pystate.c
index 707e43e..e200ece 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -35,7 +35,7 @@
 static PyInterpreterState *interp_head = NULL;
 
 PyThreadState *_PyThreadState_Current = NULL;
-unaryfunc _PyThreadState_GetFrame = NULL;
+PyThreadFrameGetter _PyThreadState_GetFrame = NULL;
 
 
 PyInterpreterState *
@@ -126,7 +126,7 @@
 {
 	PyThreadState *tstate = PyMem_NEW(PyThreadState, 1);
 	if (_PyThreadState_GetFrame == NULL)
-		_PyThreadState_GetFrame = (unaryfunc)threadstate_getframe;
+		_PyThreadState_GetFrame = threadstate_getframe;
 
 	if (tstate != NULL) {
 		tstate->interp = interp;