NULL dereference when issubclass() is called on a class with bogus __subclasses__ #78622
Description
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 = <Date 2018-08-20.20:47:06.951>
created_at = <Date 2018-08-20.13:41:11.862>
labels = ['extension-modules', '3.7', '3.8', 'type-crash']
title = 'NULL dereference when issubclass() is called on a class with bogus __subclasses__'
updated_at = <Date 2018-08-20.20:47:06.950>
user = 'https://github.com/izbyshev'bugs.python.org fields:
activity = <Date 2018-08-20.20:47:06.950>
actor = 'izbyshev'
assignee = 'none'
closed = True
closed_date = <Date 2018-08-20.20:47:06.951>
closer = 'izbyshev'
components = ['Extension Modules']
creation = <Date 2018-08-20.13:41:11.862>
creator = 'izbyshev'
dependencies = []
files = []
hgrepos = []
issue_num = 34441
keywords = ['patch']
message_count = 3.0
messages = ['323789', '323810', '323811']
nosy_count = 6.0
nosy_names = ['methane', 'berker.peksag', 'serhiy.storchaka', 'levkivskyi', 'izbyshev', 'miss-islington']
pr_nums = ['8835', '8840']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue34441'
versions = ['Python 3.7', 'Python 3.8']