| commit | 94b39ceb736997eb924dc509ea0ef55f4a19c706 | [log] [tgz] |
|---|---|---|
| author | Martin Panter <vadmium+py@gmail.com> | Sat Jan 14 06:30:37 2017 +0000 |
| committer | Martin Panter <vadmium+py@gmail.com> | Sat Jan 14 06:30:37 2017 +0000 |
| tree | 3008a888a327b66fdff25ea8939993acbe2d85a2 | |
| parent | 5644729aa6ead0408113f49150c543f4cef32143 [diff] |
Issue #1621: Overflow should not be possible in listextend()
diff --git a/Objects/listobject.c b/Objects/listobject.c index dcd7b5e..05dddfc 100644 --- a/Objects/listobject.c +++ b/Objects/listobject.c
@@ -804,6 +804,9 @@ Py_RETURN_NONE; } m = Py_SIZE(self); + /* It should not be possible to allocate a list large enough to cause + an overflow on any relevant platform */ + assert(m < PY_SSIZE_T_MAX - n); if (list_resize(self, m + n) < 0) { Py_DECREF(b); return NULL;