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PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject() always set the offset attribute to None #72698

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serhiy-storchaka opened this issue Oct 22, 2016 · 7 comments
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3.7 (EOL) end of life interpreter-core (Objects, Python, Grammar, and Parser dirs) type-bug An unexpected behavior, bug, or error

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@serhiy-storchaka
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BPO 28512
Nosy @benjaminp, @berkerpeksag, @vadmium, @serhiy-storchaka
PRs
  • [Do Not Merge] Convert Misc/NEWS so that it is managed by towncrier #552
  • Files
  • PyErr_SyntaxLocationObject-offset.patch
  • 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 2016-12-21.10:12:21.715>
    created_at = <Date 2016-10-22.21:50:07.312>
    labels = ['interpreter-core', 'type-bug', '3.7']
    title = 'PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject() always set the offset attribute to None'
    updated_at = <Date 2017-03-31.16:36:35.683>
    user = 'https://github.com/serhiy-storchaka'

    bugs.python.org fields:

    activity = <Date 2017-03-31.16:36:35.683>
    actor = 'dstufft'
    assignee = 'none'
    closed = True
    closed_date = <Date 2016-12-21.10:12:21.715>
    closer = 'serhiy.storchaka'
    components = ['Interpreter Core']
    creation = <Date 2016-10-22.21:50:07.312>
    creator = 'serhiy.storchaka'
    dependencies = []
    files = ['45574']
    hgrepos = []
    issue_num = 28512
    keywords = ['patch']
    message_count = 7.0
    messages = ['279224', '281305', '282913', '282917', '282918', '283055', '283080']
    nosy_count = 5.0
    nosy_names = ['benjamin.peterson', 'python-dev', 'berker.peksag', 'martin.panter', 'serhiy.storchaka']
    pr_nums = ['552']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue28512'
    versions = ['Python 3.5', 'Python 3.6', 'Python 3.7']

    @serhiy-storchaka
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    The purpose of PyErr_SyntaxLocationEx() function (added in 00e4ce31d404) was setting the offset attribute of raised syntax error to specified value. But this never worked as expected. The offset attribute is set to integer value in Python/errors.c:1067, but then replaced with None in Python/errors.c:1083.

    @serhiy-storchaka serhiy-storchaka added 3.7 (EOL) end of life interpreter-core (Objects, Python, Grammar, and Parser dirs) type-bug An unexpected behavior, bug, or error labels Oct 22, 2016
    @serhiy-storchaka
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    Here is a patch that makes PyErr_SyntaxLocationObject() setting correct offset.

    @vadmium
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    vadmium commented Dec 11, 2016

    Looks good apart from one quirky test case, see Reitveld

    @serhiy-storchaka
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    Good catch Martin! Opened bpo-28936 for that quirky test.

    @python-dev
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    python-dev mannequin commented Dec 11, 2016

    New changeset ea1c49ea8136 by Serhiy Storchaka in branch '3.5':
    Issue bpo-28512: Fixed setting the offset attribute of SyntaxError by
    https://hg.python.org/cpython/rev/ea1c49ea8136

    New changeset df59faf7fa59 by Serhiy Storchaka in branch '3.6':
    Issue bpo-28512: Fixed setting the offset attribute of SyntaxError by
    https://hg.python.org/cpython/rev/df59faf7fa59

    New changeset 72aaef2d144b by Serhiy Storchaka in branch 'default':
    Issue bpo-28512: Fixed setting the offset attribute of SyntaxError by
    https://hg.python.org/cpython/rev/72aaef2d144b

    @berkerpeksag
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    Hi Serhiy, there are two commented-out lines in https://hg.python.org/cpython/rev/ea1c49ea8136#l3.10 (only in 3.5)

    + #with self.assertRaises(AssertionError):
    + #support.check_syntax_error(self, "x=1")

    @serhiy-storchaka
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    Ah, it was a remnants of backporting to 3.5. Commented-out lines are used in 3.6. The line above these lines was used in 3.5. Test is passed with both variants. I commented out the 3.6 variant, but forgot to remove it (or remove old 3.5 variant and keep 3.6 variant). Do you think I should remove commented out lines, or left the code as is?

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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    Labels
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