From 401fede79815c3396b9a915622347424ef76ac8d Mon Sep 17 00:00:00 2001
From: Alexis Hildebrandt <afh@surryhill.net>
Date: Sat, 1 Oct 2022 20:32:41 +0200
Subject: Handle return value of PyUnicode_READY

to ensure access macros are only called on "legacy" unicode string
objects that are "ready".
See https://docs.python.org/3/c-api/unicode.html#c.PyUnicode_READY
---
 src/py_utils.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/py_utils.cc b/src/py_utils.cc
index cd44aa93..8765bb78 100644
--- a/src/py_utils.cc
+++ b/src/py_utils.cc
@@ -134,7 +134,8 @@ struct string_from_python
       PyUnicode_GET_SIZE(obj_ptr);
 #endif
 #if PY_MINOR_VERSION < 12
-    PyUnicode_READY(obj_ptr);
+    if (PyUnicode_READY(obj_ptr))
+      return;
 #endif
     switch (PyUnicode_KIND(obj_ptr)) {
       case PyUnicode_1BYTE_KIND: {
-- 
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