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pegen _PyParser_ASTFromFile(): Use-After-Free in syntaxerror() #88562

Description

@elManto
mannequin
BPO 44396
Nosy @gvanrossum, @lysnikolaou, @pablogsal, @miss-islington, @isidentical, @elManto
PRs
  • bpo-44396: Update multi-line-start location when reallocating tokenizer buffers #26676
  • [3.10] bpo-44396: Update multi-line-start location when reallocating tokenizer buffers (GH-26676) #26695
  • Files
  • crashes.tgz: Inputs that result in the asan violation
  • 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 2021-06-12.20:27:49.008>
    created_at = <Date 2021-06-11.14:39:45.033>
    labels = ['type-security', 'expert-C-API', 'release-blocker', '3.10', '3.11']
    title = 'pegen _PyParser_ASTFromFile(): Use-After-Free in syntaxerror()'
    updated_at = <Date 2021-06-13.03:43:40.144>
    user = 'https://github.com/elManto'

    bugs.python.org fields:

    activity = <Date 2021-06-13.03:43:40.144>
    actor = 'elmanto'
    assignee = 'none'
    closed = True
    closed_date = <Date 2021-06-12.20:27:49.008>
    closer = 'pablogsal'
    components = ['C API']
    creation = <Date 2021-06-11.14:39:45.033>
    creator = 'elmanto'
    dependencies = []
    files = ['50105']
    hgrepos = []
    issue_num = 44396
    keywords = ['patch']
    message_count = 10.0
    messages = ['395637', '395641', '395646', '395647', '395648', '395651', '395694', '395695', '395705', '395726']
    nosy_count = 6.0
    nosy_names = ['gvanrossum', 'lys.nikolaou', 'pablogsal', 'miss-islington', 'BTaskaya', 'elmanto']
    pr_nums = ['26676', '26695']
    priority = 'release blocker'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'security'
    url = 'https://bugs.python.org/issue44396'
    versions = ['Python 3.10', 'Python 3.11']

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