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.

Modules/_sre.c

diff --git a/Modules/_sre.c b/Modules/_sre.c
index 8ef8c2c..829fb6b 100644
--- a/Modules/_sre.c
+++ b/Modules/_sre.c
@@ -2054,8 +2054,7 @@
     if (!copy)
         return 0;
 
-    Py_DECREF(*object);
-    *object = copy;
+    Py_SETREF(*object, copy);
 
     return 1; /* success */
 }