ydb/contrib/tools/python3/patches/pr127876-fix-segfault.patch

From c56b5256ff30f59955362ab536c6f089dd86f9fd Mon Sep 17 00:00:00 2001
From: Alexander Shadchin <shadchin@yandex-team.com>
Date: Thu, 12 Dec 2024 19:39:27 +0300
Subject: [PATCH 1/2] Fix segmentation fault

---
 Objects/unicodeobject.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 33c4747bbef488..e043015b49d510 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -1429,12 +1429,12 @@ _copy_characters(PyObject *to, Py_ssize_t to_start,
     assert(PyUnicode_Check(from));
     assert(from_start + how_many <= PyUnicode_GET_LENGTH(from));
 
-    assert(PyUnicode_Check(to));
-    assert(to_start + how_many <= PyUnicode_GET_LENGTH(to));
-
     if (how_many == 0)
         return 0;
 
+    assert(PyUnicode_Check(to));
+    assert(to_start + how_many <= PyUnicode_GET_LENGTH(to));
+
     from_kind = PyUnicode_KIND(from);
     from_data = PyUnicode_DATA(from);
     to_kind = PyUnicode_KIND(to);