mirror of https://github.com/python/cpython
gh-111178: Avoid calling functions from incompatible pointer types in listobject.c (GH-112820)
Fix undefined behavior warnings (UBSan -fsanitize=function), for example: Objects/object.c:674:11: runtime error: call to function list_repr through pointer to incorrect function type 'struct _object *(*)(struct _object *)' listobject.c:382: note: list_repr defined here SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior Objects/object.c:674:11 in
This commit is contained in:
Christopher Chavez
GitHub
parent
9ed36d533a
commit
5d36a95e64
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@ -343,8 +343,9 @@ PyList_Append(PyObject *op, PyObject *newitem)
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/* Methods */
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static void
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list_dealloc(PyListObject *op)
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list_dealloc(PyObject *self)
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{
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PyListObject *op = (PyListObject *)self;
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Py_ssize_t i;
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PyObject_GC_UnTrack(op);
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Py_TRASHCAN_BEGIN(op, list_dealloc)
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@ -378,8 +379,9 @@ list_dealloc(PyListObject *op)
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}
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static PyObject *
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list_repr(PyListObject *v)
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list_repr(PyObject *self)
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{
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PyListObject *v = (PyListObject *)self;
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Py_ssize_t i;
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PyObject *s;
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_PyUnicodeWriter writer;
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@ -434,14 +436,15 @@ error:
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}
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static Py_ssize_t
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list_length(PyListObject *a)
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list_length(PyObject *a)
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{
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return Py_SIZE(a);
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}
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static int
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list_contains(PyListObject *a, PyObject *el)
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list_contains(PyObject *aa, PyObject *el)
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{
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PyListObject *a = (PyListObject *)aa;
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PyObject *item;
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Py_ssize_t i;
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int cmp;
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@ -456,8 +459,9 @@ list_contains(PyListObject *a, PyObject *el)
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}
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static PyObject *
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list_item(PyListObject *a, Py_ssize_t i)
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list_item(PyObject *aa, Py_ssize_t i)
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{
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PyListObject *a = (PyListObject *)aa;
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if (!valid_index(i, Py_SIZE(a))) {
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PyErr_SetObject(PyExc_IndexError, &_Py_STR(list_err));
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return NULL;
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@ -512,8 +516,9 @@ PyList_GetSlice(PyObject *a, Py_ssize_t ilow, Py_ssize_t ihigh)
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}
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static PyObject *
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list_concat(PyListObject *a, PyObject *bb)
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list_concat(PyObject *aa, PyObject *bb)
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{
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PyListObject *a = (PyListObject *)aa;
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Py_ssize_t size;
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Py_ssize_t i;
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PyObject **src, **dest;
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@ -552,8 +557,9 @@ list_concat(PyListObject *a, PyObject *bb)
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}
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static PyObject *
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list_repeat(PyListObject *a, Py_ssize_t n)
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list_repeat(PyObject *aa, Py_ssize_t n)
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{
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PyListObject *a = (PyListObject *)aa;
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const Py_ssize_t input_size = Py_SIZE(a);
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if (input_size == 0 || n <= 0)
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return PyList_New(0);
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@ -616,9 +622,9 @@ list_clear(PyListObject *a)
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}
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static int
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list_clear_slot(PyListObject *self)
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list_clear_slot(PyObject *self)
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{
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list_clear(self);
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list_clear((PyListObject *)self);
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return 0;
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}
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@ -745,8 +751,9 @@ PyList_SetSlice(PyObject *a, Py_ssize_t ilow, Py_ssize_t ihigh, PyObject *v)
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}
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static PyObject *
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list_inplace_repeat(PyListObject *self, Py_ssize_t n)
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list_inplace_repeat(PyObject *_self, Py_ssize_t n)
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{
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PyListObject *self = (PyListObject *)_self;
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Py_ssize_t input_size = PyList_GET_SIZE(self);
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if (input_size == 0 || n == 1) {
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return Py_NewRef(self);
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@ -776,8 +783,9 @@ list_inplace_repeat(PyListObject *self, Py_ssize_t n)
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}
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static int
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list_ass_item(PyListObject *a, Py_ssize_t i, PyObject *v)
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list_ass_item(PyObject *aa, Py_ssize_t i, PyObject *v)
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{
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PyListObject *a = (PyListObject *)aa;
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if (!valid_index(i, Py_SIZE(a))) {
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PyErr_SetString(PyExc_IndexError,
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"list assignment index out of range");
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@ -1044,8 +1052,9 @@ PyList_Clear(PyObject *self)
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static PyObject *
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list_inplace_concat(PyListObject *self, PyObject *other)
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list_inplace_concat(PyObject *_self, PyObject *other)
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{
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PyListObject *self = (PyListObject *)_self;
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if (list_extend(self, other) < 0) {
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return NULL;
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}
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@ -2756,8 +2765,9 @@ list_remove(PyListObject *self, PyObject *value)
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}
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static int
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list_traverse(PyListObject *o, visitproc visit, void *arg)
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list_traverse(PyObject *self, visitproc visit, void *arg)
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{
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PyListObject *o = (PyListObject *)self;
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Py_ssize_t i;
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for (i = Py_SIZE(o); --i >= 0; )
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@ -2897,10 +2907,10 @@ list___sizeof___impl(PyListObject *self)
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}
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static PyObject *list_iter(PyObject *seq);
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static PyObject *list_subscript(PyListObject*, PyObject*);
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static PyObject *list_subscript(PyObject*, PyObject*);
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static PyMethodDef list_methods[] = {
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{"__getitem__", (PyCFunction)list_subscript, METH_O|METH_COEXIST,
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{"__getitem__", list_subscript, METH_O|METH_COEXIST,
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PyDoc_STR("__getitem__($self, index, /)\n--\n\nReturn self[index].")},
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LIST___REVERSED___METHODDEF
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LIST___SIZEOF___METHODDEF
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@ -2920,21 +2930,22 @@ static PyMethodDef list_methods[] = {
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};
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static PySequenceMethods list_as_sequence = {
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(lenfunc)list_length, /* sq_length */
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(binaryfunc)list_concat, /* sq_concat */
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(ssizeargfunc)list_repeat, /* sq_repeat */
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(ssizeargfunc)list_item, /* sq_item */
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list_length, /* sq_length */
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list_concat, /* sq_concat */
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list_repeat, /* sq_repeat */
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list_item, /* sq_item */
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0, /* sq_slice */
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(ssizeobjargproc)list_ass_item, /* sq_ass_item */
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list_ass_item, /* sq_ass_item */
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0, /* sq_ass_slice */
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(objobjproc)list_contains, /* sq_contains */
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(binaryfunc)list_inplace_concat, /* sq_inplace_concat */
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(ssizeargfunc)list_inplace_repeat, /* sq_inplace_repeat */
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list_contains, /* sq_contains */
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list_inplace_concat, /* sq_inplace_concat */
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list_inplace_repeat, /* sq_inplace_repeat */
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};
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static PyObject *
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list_subscript(PyListObject* self, PyObject* item)
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list_subscript(PyObject* _self, PyObject* item)
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{
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PyListObject* self = (PyListObject*)_self;
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if (_PyIndex_Check(item)) {
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Py_ssize_t i;
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i = PyNumber_AsSsize_t(item, PyExc_IndexError);
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@ -2942,7 +2953,7 @@ list_subscript(PyListObject* self, PyObject* item)
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return NULL;
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if (i < 0)
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i += PyList_GET_SIZE(self);
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return list_item(self, i);
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return list_item((PyObject *)self, i);
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}
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else if (PySlice_Check(item)) {
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Py_ssize_t start, stop, step, slicelength, i;
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@ -2987,15 +2998,16 @@ list_subscript(PyListObject* self, PyObject* item)
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}
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static int
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list_ass_subscript(PyListObject* self, PyObject* item, PyObject* value)
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list_ass_subscript(PyObject* _self, PyObject* item, PyObject* value)
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{
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PyListObject *self = (PyListObject *)_self;
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if (_PyIndex_Check(item)) {
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Py_ssize_t i = PyNumber_AsSsize_t(item, PyExc_IndexError);
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if (i == -1 && PyErr_Occurred())
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return -1;
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if (i < 0)
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i += PyList_GET_SIZE(self);
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return list_ass_item(self, i, value);
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return list_ass_item((PyObject *)self, i, value);
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}
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else if (PySlice_Check(item)) {
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Py_ssize_t start, stop, step, slicelength;
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@ -3149,9 +3161,9 @@ list_ass_subscript(PyListObject* self, PyObject* item, PyObject* value)
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}
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static PyMappingMethods list_as_mapping = {
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(lenfunc)list_length,
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(binaryfunc)list_subscript,
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(objobjargproc)list_ass_subscript
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list_length,
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list_subscript,
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list_ass_subscript
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};
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PyTypeObject PyList_Type = {
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@ -3159,12 +3171,12 @@ PyTypeObject PyList_Type = {
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"list",
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sizeof(PyListObject),
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0,
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(destructor)list_dealloc, /* tp_dealloc */
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list_dealloc, /* tp_dealloc */
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0, /* tp_vectorcall_offset */
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0, /* tp_getattr */
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0, /* tp_setattr */
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0, /* tp_as_async */
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(reprfunc)list_repr, /* tp_repr */
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list_repr, /* tp_repr */
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0, /* tp_as_number */
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&list_as_sequence, /* tp_as_sequence */
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&list_as_mapping, /* tp_as_mapping */
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@ -3178,8 +3190,8 @@ PyTypeObject PyList_Type = {
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Py_TPFLAGS_BASETYPE | Py_TPFLAGS_LIST_SUBCLASS |
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_Py_TPFLAGS_MATCH_SELF | Py_TPFLAGS_SEQUENCE, /* tp_flags */
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list___init____doc__, /* tp_doc */
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(traverseproc)list_traverse, /* tp_traverse */
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(inquiry)list_clear_slot, /* tp_clear */
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list_traverse, /* tp_traverse */
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list_clear_slot, /* tp_clear */
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list_richcompare, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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list_iter, /* tp_iter */
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@ -3201,22 +3213,22 @@ PyTypeObject PyList_Type = {
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/*********************** List Iterator **************************/
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static void listiter_dealloc(_PyListIterObject *);
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static int listiter_traverse(_PyListIterObject *, visitproc, void *);
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static PyObject *listiter_next(_PyListIterObject *);
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static PyObject *listiter_len(_PyListIterObject *, PyObject *);
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static void listiter_dealloc(PyObject *);
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static int listiter_traverse(PyObject *, visitproc, void *);
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static PyObject *listiter_next(PyObject *);
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static PyObject *listiter_len(PyObject *, PyObject *);
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static PyObject *listiter_reduce_general(void *_it, int forward);
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static PyObject *listiter_reduce(_PyListIterObject *, PyObject *);
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static PyObject *listiter_setstate(_PyListIterObject *, PyObject *state);
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static PyObject *listiter_reduce(PyObject *, PyObject *);
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static PyObject *listiter_setstate(PyObject *, PyObject *state);
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PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
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PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
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PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
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static PyMethodDef listiter_methods[] = {
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{"__length_hint__", (PyCFunction)listiter_len, METH_NOARGS, length_hint_doc},
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{"__reduce__", (PyCFunction)listiter_reduce, METH_NOARGS, reduce_doc},
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{"__setstate__", (PyCFunction)listiter_setstate, METH_O, setstate_doc},
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{"__length_hint__", listiter_len, METH_NOARGS, length_hint_doc},
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{"__reduce__", listiter_reduce, METH_NOARGS, reduce_doc},
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{"__setstate__", listiter_setstate, METH_O, setstate_doc},
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{NULL, NULL} /* sentinel */
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};
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@ -3226,7 +3238,7 @@ PyTypeObject PyListIter_Type = {
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sizeof(_PyListIterObject), /* tp_basicsize */
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0, /* tp_itemsize */
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/* methods */
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(destructor)listiter_dealloc, /* tp_dealloc */
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listiter_dealloc, /* tp_dealloc */
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0, /* tp_vectorcall_offset */
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0, /* tp_getattr */
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0, /* tp_setattr */
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@ -3243,12 +3255,12 @@ PyTypeObject PyListIter_Type = {
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0, /* tp_as_buffer */
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
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0, /* tp_doc */
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(traverseproc)listiter_traverse, /* tp_traverse */
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listiter_traverse, /* tp_traverse */
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0, /* tp_clear */
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0, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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PyObject_SelfIter, /* tp_iter */
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(iternextfunc)listiter_next, /* tp_iternext */
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listiter_next, /* tp_iternext */
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listiter_methods, /* tp_methods */
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0, /* tp_members */
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};
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@ -3273,23 +3285,25 @@ list_iter(PyObject *seq)
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}
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static void
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listiter_dealloc(_PyListIterObject *it)
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listiter_dealloc(PyObject *self)
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{
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_PyListIterObject *it = (_PyListIterObject *)self;
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_PyObject_GC_UNTRACK(it);
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Py_XDECREF(it->it_seq);
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PyObject_GC_Del(it);
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}
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static int
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listiter_traverse(_PyListIterObject *it, visitproc visit, void *arg)
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listiter_traverse(PyObject *it, visitproc visit, void *arg)
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{
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Py_VISIT(it->it_seq);
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Py_VISIT(((_PyListIterObject *)it)->it_seq);
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return 0;
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}
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static PyObject *
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listiter_next(_PyListIterObject *it)
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listiter_next(PyObject *self)
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{
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_PyListIterObject *it = (_PyListIterObject *)self;
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PyListObject *seq;
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PyObject *item;
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@ -3311,8 +3325,9 @@ listiter_next(_PyListIterObject *it)
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}
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static PyObject *
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listiter_len(_PyListIterObject *it, PyObject *Py_UNUSED(ignored))
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listiter_len(PyObject *self, PyObject *Py_UNUSED(ignored))
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{
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_PyListIterObject *it = (_PyListIterObject *)self;
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Py_ssize_t len;
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if (it->it_seq) {
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len = PyList_GET_SIZE(it->it_seq) - it->it_index;
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@ -3323,14 +3338,15 @@ listiter_len(_PyListIterObject *it, PyObject *Py_UNUSED(ignored))
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}
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static PyObject *
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listiter_reduce(_PyListIterObject *it, PyObject *Py_UNUSED(ignored))
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listiter_reduce(PyObject *it, PyObject *Py_UNUSED(ignored))
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{
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return listiter_reduce_general(it, 1);
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}
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static PyObject *
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listiter_setstate(_PyListIterObject *it, PyObject *state)
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listiter_setstate(PyObject *self, PyObject *state)
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{
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_PyListIterObject *it = (_PyListIterObject *)self;
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Py_ssize_t index = PyLong_AsSsize_t(state);
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if (index == -1 && PyErr_Occurred())
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return NULL;
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@ -3352,17 +3368,17 @@ typedef struct {
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PyListObject *it_seq; /* Set to NULL when iterator is exhausted */
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} listreviterobject;
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static void listreviter_dealloc(listreviterobject *);
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static int listreviter_traverse(listreviterobject *, visitproc, void *);
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static PyObject *listreviter_next(listreviterobject *);
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static PyObject *listreviter_len(listreviterobject *, PyObject *);
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static PyObject *listreviter_reduce(listreviterobject *, PyObject *);
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static PyObject *listreviter_setstate(listreviterobject *, PyObject *);
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static void listreviter_dealloc(PyObject *);
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static int listreviter_traverse(PyObject *, visitproc, void *);
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static PyObject *listreviter_next(PyObject *);
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static PyObject *listreviter_len(PyObject *, PyObject *);
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static PyObject *listreviter_reduce(PyObject *, PyObject *);
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static PyObject *listreviter_setstate(PyObject *, PyObject *);
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static PyMethodDef listreviter_methods[] = {
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{"__length_hint__", (PyCFunction)listreviter_len, METH_NOARGS, length_hint_doc},
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{"__reduce__", (PyCFunction)listreviter_reduce, METH_NOARGS, reduce_doc},
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{"__setstate__", (PyCFunction)listreviter_setstate, METH_O, setstate_doc},
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{"__length_hint__", listreviter_len, METH_NOARGS, length_hint_doc},
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{"__reduce__", listreviter_reduce, METH_NOARGS, reduce_doc},
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{"__setstate__", listreviter_setstate, METH_O, setstate_doc},
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{NULL, NULL} /* sentinel */
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};
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@ -3372,7 +3388,7 @@ PyTypeObject PyListRevIter_Type = {
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sizeof(listreviterobject), /* tp_basicsize */
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0, /* tp_itemsize */
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/* methods */
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(destructor)listreviter_dealloc, /* tp_dealloc */
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listreviter_dealloc, /* tp_dealloc */
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0, /* tp_vectorcall_offset */
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0, /* tp_getattr */
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0, /* tp_setattr */
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@ -3389,12 +3405,12 @@ PyTypeObject PyListRevIter_Type = {
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0, /* tp_as_buffer */
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
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0, /* tp_doc */
|
||||
(traverseproc)listreviter_traverse, /* tp_traverse */
|
||||
listreviter_traverse, /* tp_traverse */
|
||||
0, /* tp_clear */
|
||||
0, /* tp_richcompare */
|
||||
0, /* tp_weaklistoffset */
|
||||
PyObject_SelfIter, /* tp_iter */
|
||||
(iternextfunc)listreviter_next, /* tp_iternext */
|
||||
listreviter_next, /* tp_iternext */
|
||||
listreviter_methods, /* tp_methods */
|
||||
0,
|
||||
};
|
||||
|
|
@ -3422,23 +3438,25 @@ list___reversed___impl(PyListObject *self)
|
|||
}
|
||||
|
||||
static void
|
||||
listreviter_dealloc(listreviterobject *it)
|
||||
listreviter_dealloc(PyObject *self)
|
||||
{
|
||||
listreviterobject *it = (listreviterobject *)self;
|
||||
PyObject_GC_UnTrack(it);
|
||||
Py_XDECREF(it->it_seq);
|
||||
PyObject_GC_Del(it);
|
||||
}
|
||||
|
||||
static int
|
||||
listreviter_traverse(listreviterobject *it, visitproc visit, void *arg)
|
||||
listreviter_traverse(PyObject *it, visitproc visit, void *arg)
|
||||
{
|
||||
Py_VISIT(it->it_seq);
|
||||
Py_VISIT(((listreviterobject *)it)->it_seq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
listreviter_next(listreviterobject *it)
|
||||
listreviter_next(PyObject *self)
|
||||
{
|
||||
listreviterobject *it = (listreviterobject *)self;
|
||||
PyObject *item;
|
||||
Py_ssize_t index;
|
||||
PyListObject *seq;
|
||||
|
|
@ -3463,8 +3481,9 @@ listreviter_next(listreviterobject *it)
|
|||
}
|
||||
|
||||
static PyObject *
|
||||
listreviter_len(listreviterobject *it, PyObject *Py_UNUSED(ignored))
|
||||
listreviter_len(PyObject *self, PyObject *Py_UNUSED(ignored))
|
||||
{
|
||||
listreviterobject *it = (listreviterobject *)self;
|
||||
Py_ssize_t len = it->it_index + 1;
|
||||
if (it->it_seq == NULL || PyList_GET_SIZE(it->it_seq) < len)
|
||||
len = 0;
|
||||
|
|
@ -3472,14 +3491,15 @@ listreviter_len(listreviterobject *it, PyObject *Py_UNUSED(ignored))
|
|||
}
|
||||
|
||||
static PyObject *
|
||||
listreviter_reduce(listreviterobject *it, PyObject *Py_UNUSED(ignored))
|
||||
listreviter_reduce(PyObject *it, PyObject *Py_UNUSED(ignored))
|
||||
{
|
||||
return listiter_reduce_general(it, 0);
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
listreviter_setstate(listreviterobject *it, PyObject *state)
|
||||
listreviter_setstate(PyObject *self, PyObject *state)
|
||||
{
|
||||
listreviterobject *it = (listreviterobject *)self;
|
||||
Py_ssize_t index = PyLong_AsSsize_t(state);
|
||||
if (index == -1 && PyErr_Occurred())
|
||||
return NULL;
|
||||
|
|
|
|||
Loading…
Reference in New Issue