From 5a57ade58ec5bee85db41b8ce1340ff077781b65 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Thu, 24 Dec 2015 10:35:59 +0200
Subject: Issue #20440: Massive replacing unsafe attribute setting code with
 special macro Py_SETREF.

---
 Python/compile.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'Python/compile.c')

diff --git a/Python/compile.c b/Python/compile.c
index 4befaa78fc9..7631f4e55a8 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -1795,8 +1795,7 @@ compiler_class(struct compiler *c, stmt_ty s)
     {
         /* use the class name for name mangling */
         Py_INCREF(s->v.ClassDef.name);
-        Py_XDECREF(c->u->u_private);
-        c->u->u_private = s->v.ClassDef.name;
+        Py_SETREF(c->u->u_private, s->v.ClassDef.name);
         /* load (global) __name__ ... */
         str = PyUnicode_InternFromString("__name__");
         if (!str || !compiler_nameop(c, str, Load)) {
-- 
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