gh-106168: PyTuple_SET_ITEM() now checks the index (#106164)

PyTuple_SET_ITEM() and PyList_SET_ITEM() now check the index argument
with an assertion if Python is built in debug mode or is built with
assertions.

* list_extend() and _PyList_AppendTakeRef() now set the list size
  before calling PyList_SET_ITEM().
* PyStructSequence_GetItem() and PyStructSequence_SetItem() now check
  the index argument: must be lesser than REAL_SIZE(op).
* PyStructSequence_GET_ITEM() and PyStructSequence_SET_ITEM() are now
  aliases to PyStructSequence_GetItem() and
  PyStructSequence_SetItem().
This commit is contained in:
Victor Stinner 2023-06-28 03:45:57 +02:00 committed by GitHub
parent 161012fc25
commit 3f8483cad2
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 63 additions and 24 deletions

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@ -953,8 +953,9 @@ list_extend(PyListObject *self, PyObject *iterable)
}
if (Py_SIZE(self) < self->allocated) {
/* steals ref */
PyList_SET_ITEM(self, Py_SIZE(self), item);
Py_SET_SIZE(self, Py_SIZE(self) + 1);
Py_ssize_t len = Py_SIZE(self);
Py_SET_SIZE(self, len + 1);
PyList_SET_ITEM(self, len, item);
}
else {
if (_PyList_AppendTakeRef(self, item) < 0)