Issue #11875: Alter the previous fix to work better with subclasses

1 files changed, 1 insertions, 1 deletions

diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index 32c2e806e3..bb10352705 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -156,7 +156,7 @@ class OrderedDict(dict):
         'Return state information for pickling'
         items = [[k, self[k]] for k in self]
         inst_dict = vars(self).copy()
-        for k in vars(self.__class__()):
+        for k in vars(OrderedDict()):
             inst_dict.pop(k, None)
         if inst_dict:
             return (self.__class__, (items,), inst_dict)