gh-111178: Fix function signatures of unicodeiter (#130684)

Author: vstinner

Objects/unicodeobject.c

@@ -16025,23 +16025,26 @@ typedef struct {
 } unicodeiterobject;
 
 static void
-unicodeiter_dealloc(unicodeiterobject *it)
+unicodeiter_dealloc(PyObject *op)
 {
+    unicodeiterobject *it = (unicodeiterobject *)op;
     _PyObject_GC_UNTRACK(it);
     Py_XDECREF(it->it_seq);
     PyObject_GC_Del(it);
 }
 
 static int
-unicodeiter_traverse(unicodeiterobject *it, visitproc visit, void *arg)
+unicodeiter_traverse(PyObject *op, visitproc visit, void *arg)
 {
+    unicodeiterobject *it = (unicodeiterobject *)op;
     Py_VISIT(it->it_seq);
     return 0;
 }
 
 static PyObject *
-unicodeiter_next(unicodeiterobject *it)
+unicodeiter_next(PyObject *op)
 {
+    unicodeiterobject *it = (unicodeiterobject *)op;
     PyObject *seq;
 
     assert(it != NULL);
@@ -16064,8 +16067,9 @@ unicodeiter_next(unicodeiterobject *it)
 }
 
 static PyObject *
-unicode_ascii_iter_next(unicodeiterobject *it)
+unicode_ascii_iter_next(PyObject *op)
 {
+    unicodeiterobject *it = (unicodeiterobject *)op;
     assert(it != NULL);
     PyObject *seq = it->it_seq;
     if (seq == NULL) {
@@ -16086,8 +16090,9 @@ unicode_ascii_iter_next(unicodeiterobject *it)
 }
 
 static PyObject *
-unicodeiter_len(unicodeiterobject *it, PyObject *Py_UNUSED(ignored))
+unicodeiter_len(PyObject *op, PyObject *Py_UNUSED(ignored))
 {
+    unicodeiterobject *it = (unicodeiterobject *)op;
     Py_ssize_t len = 0;
     if (it->it_seq)
         len = PyUnicode_GET_LENGTH(it->it_seq) - it->it_index;
@@ -16097,8 +16102,9 @@ unicodeiter_len(unicodeiterobject *it, PyObject *Py_UNUSED(ignored))
 PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
 
 static PyObject *
-unicodeiter_reduce(unicodeiterobject *it, PyObject *Py_UNUSED(ignored))
+unicodeiter_reduce(PyObject *op, PyObject *Py_UNUSED(ignored))
 {
+    unicodeiterobject *it = (unicodeiterobject *)op;
     PyObject *iter = _PyEval_GetBuiltin(&_Py_ID(iter));
 
     /* _PyEval_GetBuiltin can invoke arbitrary code,
@@ -16120,8 +16126,9 @@ unicodeiter_reduce(unicodeiterobject *it, PyObject *Py_UNUSED(ignored))
 PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
 
 static PyObject *
-unicodeiter_setstate(unicodeiterobject *it, PyObject *state)
+unicodeiter_setstate(PyObject *op, PyObject *state)
 {
+    unicodeiterobject *it = (unicodeiterobject *)op;
     Py_ssize_t index = PyLong_AsSsize_t(state);
     if (index == -1 && PyErr_Occurred())
         return NULL;
@@ -16138,12 +16145,9 @@ unicodeiter_setstate(unicodeiterobject *it, PyObject *state)
 PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
 
 static PyMethodDef unicodeiter_methods[] = {
-    {"__length_hint__", (PyCFunction)unicodeiter_len, METH_NOARGS,
-     length_hint_doc},
-    {"__reduce__",      (PyCFunction)unicodeiter_reduce, METH_NOARGS,
-     reduce_doc},
-    {"__setstate__",    (PyCFunction)unicodeiter_setstate, METH_O,
-     setstate_doc},
+    {"__length_hint__", unicodeiter_len, METH_NOARGS, length_hint_doc},
+    {"__reduce__",      unicodeiter_reduce, METH_NOARGS, reduce_doc},
+    {"__setstate__",    unicodeiter_setstate, METH_O, setstate_doc},
     {NULL,      NULL}       /* sentinel */
 };
 
@@ -16153,7 +16157,7 @@ PyTypeObject PyUnicodeIter_Type = {
     sizeof(unicodeiterobject),      /* tp_basicsize */
     0,                  /* tp_itemsize */
     /* methods */
-    (destructor)unicodeiter_dealloc,    /* tp_dealloc */
+    unicodeiter_dealloc,/* tp_dealloc */
     0,                  /* tp_vectorcall_offset */
     0,                  /* tp_getattr */
     0,                  /* tp_setattr */
@@ -16170,12 +16174,12 @@ PyTypeObject PyUnicodeIter_Type = {
     0,                  /* tp_as_buffer */
     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
     0,                  /* tp_doc */
-    (traverseproc)unicodeiter_traverse, /* tp_traverse */
+    unicodeiter_traverse, /* tp_traverse */
     0,                  /* tp_clear */
     0,                  /* tp_richcompare */
     0,                  /* tp_weaklistoffset */
     PyObject_SelfIter,          /* tp_iter */
-    (iternextfunc)unicodeiter_next,     /* tp_iternext */
+    unicodeiter_next,   /* tp_iternext */
     unicodeiter_methods,            /* tp_methods */
     0,
 };
@@ -16184,12 +16188,12 @@ PyTypeObject _PyUnicodeASCIIIter_Type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
     .tp_name = "str_ascii_iterator",
     .tp_basicsize = sizeof(unicodeiterobject),
-    .tp_dealloc = (destructor)unicodeiter_dealloc,
+    .tp_dealloc = unicodeiter_dealloc,
     .tp_getattro = PyObject_GenericGetAttr,
     .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
-    .tp_traverse = (traverseproc)unicodeiter_traverse,
+    .tp_traverse = unicodeiter_traverse,
     .tp_iter = PyObject_SelfIter,
-    .tp_iternext = (iternextfunc)unicode_ascii_iter_next,
+    .tp_iternext = unicode_ascii_iter_next,
     .tp_methods = unicodeiter_methods,
 };