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gh-90494: Reject 6th element of the __reduce__() tuple (GH-93609)

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copy.copy() and copy.deepcopy() now always raise a TypeError if
__reduce__() returns a tuple with length 6 instead of silently ignore
the 6th item or produce incorrect result.
This commit is contained in:
Serhiy Storchaka 2022-06-09 10:12:43 +03:00 • committed by GitHub
parent cffa4f7854
commit a365dd64c2
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4 changed files with 27 additions and 2 deletions
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2
Lib/pickle.py
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@ -619,7 +619,7 @@ class _Pickler:
"persistent IDs in protocol 0 must be ASCII strings")
def save_reduce(self, func, args, state=None, listitems=None,
dictitems=None, state_setter=None, obj=None):
dictitems=None, state_setter=None, *, obj=None):
# This API is called by some subclasses
if not isinstance(args, tuple):