os.lseek() and FileIO.seek() does not support offset larger than 2^63-1

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
28/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
operating-systems

Research direction

Start by tracing the os.lseek() and FileIO.seek() entry points, then review lseek_unsigned.patch and lseek_unsigned_test.py. Compare them with lseek_negative.diff and existing tests; done means offsets larger than 2^63-1 are handled as specified and the regression test passes.

Written by the indexing model from the issue text.

Description

3.10 3.9 (EOL) topic-IO
BPO 12545
Nosy @jcea, @pitrou, @vstinner
Files
  • lseek_negative.diff
  • lseek_unsigned.patch
  • lseek_unsigned_test.py
    		•

    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 2011-07-13.03:29:18.643>
labels = ['3.10', '3.9', 'expert-IO']
title = 'os.lseek() and FileIO.seek() does not support offset larger than 2^63-1'
updated_at = <Date 2020-11-17.21:36:19.610>
user = 'https://bugs.python.org/KuberanNaganathan'

    bugs.python.org fields:

    activity = <Date 2020-11-17.21:36:19.610>
actor = 'neologix'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['IO']
creation = <Date 2011-07-13.03:29:18.643>
creator = 'Kuberan.Naganathan'
dependencies = []
files = ['22719', '30487', '30490']
hgrepos = []
issue_num = 12545
keywords = ['patch']
message_count = 21.0
messages = ['140222', '140223', '140250', '140251', '140253', '140261', '140270', '140272', '140289', '140605', '140715', '140721', '140723', '140807', '140904', '140923', '190724', '190725', '190727', '190728', '190729']
nosy_count = 4.0
nosy_names = ['jcea', 'pitrou', 'vstinner', 'Kuberan.Naganathan']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue12545'
versions = ['Python 3.9', 'Python 3.10']

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