diff options
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/_pickle.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Modules/_pickle.c b/Modules/_pickle.c index 4cb26b1ec0..3588e33f09 100644 --- a/Modules/_pickle.c +++ b/Modules/_pickle.c @@ -910,12 +910,12 @@ PyMemoTable_Set(PyMemoTable *self, PyObject *key, Py_ssize_t value) * Very large memo tables (over 50K items) use doubling instead. * This may help applications with severe memory constraints. */ - size_t triple_used = self->mt_used * 3; - if (triple_used > self->mt_used && triple_used < self->mt_allocated * 2) { + if (SIZE_MAX / 3 >= self->mt_used && self->mt_used * 3 < self->mt_allocated * 2) { return 0; } - return _PyMemoTable_ResizeTable(self, - (self->mt_used > 50000 ? 2 : 4) * self->mt_used); + // self->mt_used is always < PY_SSIZE_T_MAX, so this can't overflow. + size_t desired_size = (self->mt_used > 50000 ? 2 : 4) * self->mt_used; + return _PyMemoTable_ResizeTable(self, desired_size); } #undef MT_MINSIZE |