From 9794fd781711d3d08ec13b53ff2c42f6cbea61d0 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sat, 30 Apr 2022 15:33:39 +0300
Subject: [PATCH] [3.9] [3.10] gh-92049: Forbid pickling constants
 re._constants.SUCCESS etc (GH-92070) (GH-92073)

Previously, pickling did not fail, but the result could not be unpickled.
(cherry picked from commit 6d0d547033e295f91f05030322acfbb0e280fc1f)
(cherry picked from commit e8ff3c92f69b475aa20ba7c08efccbc329f9b42e)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
---
 Lib/sre_constants.py                                            | 2 ++
 .../next/Library/2022-04-30-10-53-10.gh-issue-92049.5SEKoh.rst  | 2 ++
 2 files changed, 4 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2022-04-30-10-53-10.gh-issue-92049.5SEKoh.rst

diff --git a/Lib/sre_constants.py b/Lib/sre_constants.py
index 8e613cb3fa5dcb..db3ca51e8306ad 100644
--- a/Lib/sre_constants.py
+++ b/Lib/sre_constants.py
@@ -62,6 +62,8 @@ def __new__(cls, value, name):
     def __repr__(self):
         return self.name
 
+    __reduce__ = None
+
 MAXREPEAT = _NamedIntConstant(MAXREPEAT, 'MAXREPEAT')
 
 def _makecodes(names):
diff --git a/Misc/NEWS.d/next/Library/2022-04-30-10-53-10.gh-issue-92049.5SEKoh.rst b/Misc/NEWS.d/next/Library/2022-04-30-10-53-10.gh-issue-92049.5SEKoh.rst
new file mode 100644
index 00000000000000..cad4621c65096c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-04-30-10-53-10.gh-issue-92049.5SEKoh.rst
@@ -0,0 +1,2 @@
+Forbid pickling constants ``re._constants.SUCCESS`` etc. Previously,
+pickling did not fail, but the result could not be unpickled.