closes bpo-34474: Python/bltinmodule.c: Add missing NULL check in builtin_sum_impl...

Reported by Svace static analyzer.
(cherry picked from commit 2b824b2538c4a5f9f520c5de8a1eae5a0c181a94)

Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru>

diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 5ee08e67e7fb80606dcce8a3a29a1e256b3068aa..d7b0bbd331dacc37e5608e59dab54a5b050561d9 100644 (file)
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -2343,6 +2343,11 @@ builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start)
                 }
             }
             result = PyFloat_FromDouble(f_result);
+            if (result == NULL) {
+                Py_DECREF(item);
+                Py_DECREF(iter);
+                return NULL;
+            }
             temp = PyNumber_Add(result, item);
             Py_DECREF(result);
             Py_DECREF(item);