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Kaydet (Commit) 0e950dd2 authored tarafından Serhiy Storchaka's avatar Serhiy Storchaka Kaydeden (comit) GitHub
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bpo-31579: Fixed a possible leak in enumerate() with large indices. (#3753)

üst 4a2d00cb
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Objects/enumobject.c
Dosyayı görüntüle @ 0e950dd2
...@@ -108,14 +108,18 @@ enum_next_long(enumobject *en, PyObject* next_item) ...@@ -108,14 +108,18 @@ enum_next_long(enumobject *en, PyObject* next_item)
if (en->en_longindex == NULL) { if (en->en_longindex == NULL) {
en->en_longindex = PyLong_FromSsize_t(PY_SSIZE_T_MAX); en->en_longindex = PyLong_FromSsize_t(PY_SSIZE_T_MAX);
if (en->en_longindex == NULL) if (en->en_longindex == NULL) {
Py_DECREF(next_item);
return NULL; return NULL;
} }
}
next_index = en->en_longindex; next_index = en->en_longindex;
assert(next_index != NULL); assert(next_index != NULL);
stepped_up = PyNumber_Add(next_index, _PyLong_One); stepped_up = PyNumber_Add(next_index, _PyLong_One);
if (stepped_up == NULL) if (stepped_up == NULL) {
Py_DECREF(next_item);
return NULL; return NULL;
}
en->en_longindex = stepped_up; en->en_longindex = stepped_up;
if (result->ob_refcnt == 1) { if (result->ob_refcnt == 1) {
......
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