From 280914cd46f4411a2e01150bf9d9c53dff19fa66 Mon Sep 17 00:00:00 2001
From: shadchin <shadchin@yandex-team.com>
Date: Wed, 24 Jun 2026 07:09:14 +0300
Subject: Update Python 3 to 3.13.14
 commit_hash:9913a0288f56b5ddd0f99e5b2ff1569d491cbe5d

---
 contrib/tools/python3/Modules/_csv.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'contrib/tools/python3/Modules/_csv.c')

diff --git a/contrib/tools/python3/Modules/_csv.c b/contrib/tools/python3/Modules/_csv.c
index 0b7ff2575fc..755d005f4d8 100644
--- a/contrib/tools/python3/Modules/_csv.c
+++ b/contrib/tools/python3/Modules/_csv.c
@@ -957,6 +957,12 @@ Reader_iternext(ReaderObj *self)
             Py_DECREF(lineobj);
             return NULL;
         }
+        if (self->fields == NULL) {
+            PyErr_SetString(module_state->error_obj,
+                            "iterator has already advanced the reader");
+            Py_DECREF(lineobj);
+            return NULL;
+        }
         ++self->line_num;
         kind = PyUnicode_KIND(lineobj);
         data = PyUnicode_DATA(lineobj);
-- 
cgit v1.3