commit 5951f2300f43d75d344d542e171daed47a0382a6
author Serhiy Storchaka <storchaka@gmail.com> Thu Dec 24 10:35:35 2015 +0200
committer Serhiy Storchaka <storchaka@gmail.com> Thu Dec 24 10:35:35 2015 +0200
tree 2e173dda0c0d4c4bf887e8a6a309430d0d9cd5be
parent 6ed42ea08b3a961944e94f1dd941ffabc7657065

Issue #20440: Massive replacing unsafe attribute setting code with special
macro Py_SETREF.

Objects/unicodeobject.c

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 2925651..9f503bd 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -436,8 +436,7 @@
             return -1;
         Py_UNICODE_COPY(w->str, v->str,
                         length < v->length ? length : v->length);
-        Py_DECREF(*unicode);
-        *unicode = w;
+        Py_SETREF(*unicode, w);
         return 0;
     }