diff options
Diffstat (limited to 'Python')
| -rw-r--r-- | Python/bltinmodule.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c index 7a2b259..047cca0 100644 --- a/Python/bltinmodule.c +++ b/Python/bltinmodule.c @@ -2375,9 +2375,11 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start) } if (PyLong_CheckExact(item)) { long b = PyLong_AsLongAndOverflow(item, &overflow); - long x = i_result + b; - if (overflow == 0 && ((x^i_result) >= 0 || (x^b) >= 0)) { - i_result = x; + if (overflow == 0 && + (i_result >= 0 ? (b <= LONG_MAX - i_result) + : (b >= LONG_MIN - i_result))) + { + i_result += b; Py_DECREF(item); continue; } |