Possible leak in initialization of errmap for OSError

[serhiy-storchaka]

BPO	42425
Nosy	@serhiy-storchaka
PRs	bpo-42425: Fix possible leak in initialization of errmap for OSError #23446 [3.8] bpo-42425: Fix possible leak in initialization of errmap for OSError (GH-23446). #24025 [3.9] bpo-42425: Fix possible leak in initialization of errmap for OSError (GH-23446). #24057

^{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 2021-01-02.11:05:39.642>
created_at = <Date 2020-11-21.15:01:13.665>
labels = ['interpreter-core', '3.8', '3.9', '3.10', 'performance']
title = 'Possible leak in initialization of errmap for OSError'
updated_at = <Date 2021-01-02.11:05:39.642>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2021-01-02.11:05:39.642>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2021-01-02.11:05:39.642>
closer = 'serhiy.storchaka'
components = ['Interpreter Core']
creation = <Date 2020-11-21.15:01:13.665>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 42425
keywords = ['patch']
message_count = 4.0
messages = ['381565', '381569', '384188', '384219']
nosy_count = 1.0
nosy_names = ['serhiy.storchaka']
pr_nums = ['23446', '24025', '24057']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'resource usage'
url = 'https://bugs.python.org/issue42425'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

[serhiy-storchaka]

There is a potential leak when adding item to errmap (errno to OSError subclass mapping) fails.

[serhiy-storchaka]

New changeset ed1007c by Serhiy Storchaka in branch 'master':
bpo-42425: Fix possible leak in initialization of errmap for OSError (GH-23446)
ed1007c

[serhiy-storchaka]

New changeset 1a544e1 by Serhiy Storchaka in branch '3.8':
[3.8] bpo-42425: Fix possible leak in initialization of errmap for OSError (GH-23446). (GH-24025)
1a544e1

[serhiy-storchaka]

New changeset 7695d83 by Serhiy Storchaka in branch '3.9':
[3.9] bpo-42425: Fix possible leak in initialization of errmap for OSError (GH-23446). (GH-24057)
7695d83