static PyObject *setiter_iternext(setiterobject *si)

{

PyObject *key;

PyObject *key = NULL;

Py_ssize_t i, mask;

setentry *entry;

PySetObject *so = si->si_set;

return NULL;

assert (PyAnySet_Check(so));

if (si->si_used != so->used) {

Py_ssize_t so_used = FT_ATOMIC_LOAD_SSIZE(so->used);

Py_ssize_t si_used = FT_ATOMIC_LOAD_SSIZE(si->si_used);

if (si_used != so_used) {

PyErr_SetString(PyExc_RuntimeError,

"Set changed size during iteration");

si->si_used = -1; /* Make this state sticky */

return NULL;

}

Py_BEGIN_CRITICAL_SECTION(so);

i = si->si_pos;

assert(i>=0);

entry = so->table;

mask = so->mask;

while (i <= mask && (entry[i].key == NULL || entry[i].key == dummy))

while (i <= mask && (entry[i].key == NULL || entry[i].key == dummy)) {

i++;

}

if (i <= mask) {

key = Py_NewRef(entry[i].key);

}

Py_END_CRITICAL_SECTION();

si->si_pos = i+1;

if (i > mask)

goto fail;

if (key == NULL) {

si->si_set = NULL;

Py_DECREF(so);

return NULL;

}

si->len--;

key = entry[i].key;

return Py_NewRef(key);

fail:

si->si_set = NULL;

Py_DECREF(so);

return NULL;

return key;

}

PyTypeObject PySetIter_Type = {