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Awaiting multiple times on same task increases memory usage unboundedly #91110

Description

@davidmanzanares
BPO 46954
Nosy @asvetlov, @1st1, @iritkatriel, @davidmanzanares
Superseder
  • bpo-45924: Incorrect traceback when future's exception is raised multiple times
  • Files
  • multi_await_exception.py: Script to reproduce
  • 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 2022-03-09.20:24:30.288>
    created_at = <Date 2022-03-08.09:51:02.984>
    labels = ['3.11', '3.9', '3.10', 'expert-asyncio']
    title = 'Awaiting multiple times on same task increases memory usage unboundedly'
    updated_at = <Date 2022-03-09.20:24:30.287>
    user = 'https://github.com/davidmanzanares'

    bugs.python.org fields:

    activity = <Date 2022-03-09.20:24:30.287>
    actor = 'iritkatriel'
    assignee = 'none'
    closed = True
    closed_date = <Date 2022-03-09.20:24:30.288>
    closer = 'iritkatriel'
    components = ['asyncio']
    creation = <Date 2022-03-08.09:51:02.984>
    creator = 'davidmanzanares'
    dependencies = []
    files = ['50664']
    hgrepos = []
    issue_num = 46954
    keywords = []
    message_count = 2.0
    messages = ['414739', '414812']
    nosy_count = 4.0
    nosy_names = ['asvetlov', 'yselivanov', 'iritkatriel', 'davidmanzanares']
    pr_nums = []
    priority = 'normal'
    resolution = 'duplicate'
    stage = 'resolved'
    status = 'closed'
    superseder = '45924'
    type = None
    url = 'https://bugs.python.org/issue46954'
    versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']

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