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| author | Serhiy Storchaka <storchaka@gmail.com> | 2017-09-26 05:14:58 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-09-26 05:14:58 (GMT) |
| commit | 0e950dd22b075b4809c84afda8aede02b76ac0fa (patch) | |
| tree | e15d01835bf14fa38fcc733bb9b9dd7f3c3e4ba3 /Objects/enumobject.c | |
| parent | 4a2d00cb4525fcb3209f04531472ba6a359ed418 (diff) | |
| download | cpython-0e950dd22b075b4809c84afda8aede02b76ac0fa.zip cpython-0e950dd22b075b4809c84afda8aede02b76ac0fa.tar.gz cpython-0e950dd22b075b4809c84afda8aede02b76ac0fa.tar.bz2 | |
bpo-31579: Fixed a possible leak in enumerate() with large indices. (#3753)
Diffstat (limited to 'Objects/enumobject.c')
| -rw-r--r-- | Objects/enumobject.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Objects/enumobject.c b/Objects/enumobject.c index 154d901..4d0af14 100644 --- a/Objects/enumobject.c +++ b/Objects/enumobject.c @@ -108,14 +108,18 @@ enum_next_long(enumobject *en, PyObject* next_item) if (en->en_longindex == NULL) { 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; + } } next_index = en->en_longindex; assert(next_index != NULL); stepped_up = PyNumber_Add(next_index, _PyLong_One); - if (stepped_up == NULL) + if (stepped_up == NULL) { + Py_DECREF(next_item); return NULL; + } en->en_longindex = stepped_up; if (result->ob_refcnt == 1) { |