8000 pdb exits unexpectedly when calling args · Issue #86350 · python/cpython · GitHub
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xgenadam mannequin opened this issue Oct 28, 2020 · 3 comments
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pdb exits unexpectedly when calling args #86350

xgenadam mannequin opened this issue Oct 28, 2020 · 3 comments
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3.8 (EOL) end of life 3.9 only security fixes 3.10 only security fixes stdlib Python modules in the Lib dir type-bug An unexpected behavior, bug, or error

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@xgenadam
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xgenadam mannequin commented Oct 28, 2020
BPO 42184
Nosy @iritkatriel
Files
  • bug_example.py: simple reproduction
    		•

    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 2020-10-28.18:07:15.566>
labels = ['3.8', 'type-bug', 'library', '3.9', '3.10']
title = 'pdb exits unexpectedly when calling args'
updated_at = <Date 2020-10-30.23:07:36.784>
user = 'https://bugs.python.org/xgenadam'

    bugs.python.org fields:

    activity = <Date 2020-10-30.23:07:36.784>
actor = 'iritkatriel'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-10-28.18:07:15.566>
creator = 'xgenadam'
dependencies = []
files = ['49546']
hgrepos = []
issue_num = 42184
keywords = []
message_count = 2.0
messages = ['379838', '380011']
nosy_count = 2.0
nosy_names = ['iritkatriel', 'xgenadam']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue42184'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']
    @xgenadam
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    xgenadam mannequin commented Oct 28, 2020

    When an objects repr or str methods return None a TypeError is raised. However if this object is passed to a function and args is called from within pdb, pdb will immediately exit.

    Attached to this is bug_example.py which contains a simple example of how to reproduce this.

    Depending on circumstances this can make debugging difficult.

    exact python version that this happened with:
    Python 3.6.11

    @xgenadam xgenadam mannequin added 8000 type-bug An unexpected behavior, bug, or error labels Oct 28, 2020
    @iritkatriel
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    This is true in 3.10 as well. The same happens if __repr__ raises an exception. do_args command doesn't handle exceptions from repr.

    See also bpo-37022.

    @iritkatriel iritkatriel added stdlib Python modules in the Lib dir 3.8 (EOL) end of life 3.9 only security fixes 3.10 only security fixes labels Oct 30, 2020
    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
    @kumaraditya303
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    Duplicate of #28400

    @kumaraditya303 kumaraditya303 marked this as a duplicate of #28400 Jul 14, 2022
    @kumaraditya303 kumaraditya303 closed this as not planned Won't fix, can't repro, duplicate, stale Jul 14, 2022
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