Issue #9425: create Py_UNICODE_strrchr() function
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index 6448cda..7f5e8fd 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -1622,6 +1622,10 @@
     const Py_UNICODE *s, Py_UNICODE c
     );
 
+PyAPI_FUNC(Py_UNICODE*) Py_UNICODE_strrchr(
+    const Py_UNICODE *s, Py_UNICODE c
+    );
+
 #ifdef __cplusplus
 }
 #endif