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-rw-r--r--Python/bltinmodule.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 38bdfb2..d0d3180 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -2484,7 +2484,8 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start)
/* Single digits are common, fast, and cannot overflow on unpacking. */
switch (Py_SIZE(item)) {
case -1: b = -(sdigit) ((PyLongObject*)item)->ob_digit[0]; break;
- case 0: continue;
+ // Note: the continue goes to the top of the "while" loop that iterates over the elements
+ case 0: Py_DECREF(item); continue;
case 1: b = ((PyLongObject*)item)->ob_digit[0]; break;
default: b = PyLong_AsLongAndOverflow(item, &overflow); break;
}