From bf21e2160d1dc6869fb230b90a23ab030835395b Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Mon, 2 Dec 2024 11:14:47 +0100
Subject: [PATCH] Fix Unicode encode_wstr_utf8() (#127420)

Raise RuntimeError instead of RuntimeWarning.
---
 Objects/unicodeobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 33fa21d4c7d1bf..463da06445984b 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -16158,7 +16158,7 @@ encode_wstr_utf8(wchar_t *wstr, char **str, const char *name)
     int res;
     res = _Py_EncodeUTF8Ex(wstr, str, NULL, NULL, 1, _Py_ERROR_STRICT);
     if (res == -2) {
-        PyErr_Format(PyExc_RuntimeWarning, "cannot encode %s", name);
+        PyErr_Format(PyExc_RuntimeError, "cannot encode %s", name);
         return -1;
     }
     if (res < 0) {