[3.10] pythongh-92049: Forbid pickling constants re._constants.SUCCESS etc (pythonGH-92070) (pythonGH-92073)

serhiy-storchaka · web-flow · commit e8ff3c92f69b · 2022-04-30T15:33:39.000+03:00
Previously, pickling did not fail, but the result could not be unpickled. (cherry picked from commit 6d0d547)
diff --git 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
@@ -0,0 +1,2 @@
+Forbid pickling constants ``re._constants.SUCCESS`` etc. Previously,
+pickling did not fail, but the result could not be unpickled.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Forbid pickling constants ``re._constants.SUCCESS`` etc. Previously,
	`2`	`+pickling did not fail, but the result could not be unpickled.`