pickle and _pickle accelerator have different behavior when unpickling an object with falsy getstate return

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#70,882 opened on Apr 5, 2016 3 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 25/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: python
Domain: backend

Research direction

The issue names pickle and _pickle and reports different unpickling behavior for a falsy getstate return; begin by reproducing that discrepancy in the existing pickle test suite. Done means the two implementations behave consistently and regression coverage records the expected result.

Written by the indexing model from the issue text.

Description

3.10 3.11 3.9 (EOL) docs type-bug

BPO	26695
Nosy	@MojoVampire, @ZackerySpytz, @iritkatriel

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2016-04-05.15:01:46.219>
labels = ['3.11', 'type-bug', '3.9', '3.10', 'docs']
title = 'pickle and _pickle accelerator have different behavior when unpickling an object with falsy __getstate__ return'
updated_at = <Date 2021-12-05.23:11:25.472>
user = 'https://github.com/MojoVampire'

bugs.python.org fields:

activity = <Date 2021-12-05.23:11:25.472>
actor = 'iritkatriel'
assignee = 'docs@python'
closed = False
closed_date = None
closer = None
components = ['Documentation']
creation = <Date 2016-04-05.15:01:46.219>
creator = 'josh.r'
dependencies = []
files = []
hgrepos = []
issue_num = 26695
keywords = []
message_count = 3.0
messages = ['262908', '348309', '407756']
nosy_count = 4.0
nosy_names = ['docs@python', 'josh.r', 'ZackerySpytz', 'iritkatriel']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue26695'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']

Dominant language: Python
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Merged PRs (30d): 558

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pickle and _pickle accelerator have different behavior when unpickling an object with falsy __getstate__ return