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Author vstinner
Recipients SilentGhost, WildCard65, paul.moore, steve.dower, tim.golden, vstinner, zach.ware
Date 2020-06-23.10:47:37
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
That's a bug in array_array_index() which downcasts "Py_ssize_t i" to long:

static PyObject *
array_array_index(arrayobject *self, PyObject *v)
/*[clinic end generated code: output=d48498d325602167 input=cf619898c6649d08]*/
    Py_ssize_t i;

    for (i = 0; i < Py_SIZE(self); i++) {
        PyObject *selfi;
        int cmp;

        selfi = getarrayitem((PyObject *)self, i);
        if (selfi == NULL)
            return NULL;
        cmp = PyObject_RichCompareBool(selfi, v, Py_EQ);
        if (cmp > 0) {
            return PyLong_FromLong((long)i); // <===== HERE ===
        else if (cmp < 0)
            return NULL;
    PyErr_SetString(PyExc_ValueError, "array.index(x): x not in array");
    return NULL;
Date User Action Args
2020-06-23 10:47:37vstinnersetrecipients: + vstinner, paul.moore, tim.golden, SilentGhost, zach.ware, steve.dower, WildCard65
2020-06-23 10:47:37vstinnersetmessageid: <>
2020-06-23 10:47:37vstinnerlinkissue41085 messages
2020-06-23 10:47:37vstinnercreate