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GeezerVison is showing github.com — test_import: test_concurrency() leaks references and memory on Windows · Issue #107086 · python/cpython

test_import: test_concurrency() leaks references and memory on Windows #107086

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test_import: test_concurrency() leaks references and memory on Windows#107086
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type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

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@vstinner
vstinner
opened on Jul 23, 2023
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vstinner@WIN C:\victor\python\main>python -m test test_import -R 3:3 -v
(...)
test_import leaked [23, 23, 34] references, sum=80
test_import leaked [23, 21, 34] memory blocks, sum=78
test_import failed (reference leak) in 40.3 sec

test_concurrency() alone reproduces the issue:

vstinner@WIN C:\victor\python\main>python -m test test_import -R 3:3 -v -m test_concurrency 
(...)
test_import leaked [40, 40, 40] references, sum=120
test_import leaked [40, 40, 40] memory blocks, sum=120

By the way, test_typing also leaks:

vstinner@WIN C:\victor\python\main>python -m test test_typing -R 3:3
(...)
test_typing leaked [1, 1, 1] memory blocks, sum=3

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  1. vstinner
    added
    type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error
    on Jul 23, 2023

  2. vstinner commented on Jul 23, 2023

    @vstinner
    vstinner
    on Jul 23, 2023
    MemberAuthor
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    Note: On an old buildbot failure (19 days ago), I also saw a test_grammar leak, but I cannot reproduce it.

    Build: https://buildbot.python.org/all/#/builders/920/builds/447

    test_grammar leaked [2, 2, 2] references, sum=6
test_grammar leaked [2, 2, 2] memory blocks, sum=6

  3. vstinner commented on Jul 23, 2023

    @vstinner
    vstinner
    on Jul 23, 2023
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    Duplicate of #106176

    I also found commit 3325f05 with a git bisect.

  4. vstinner
    closed this as completedon Jul 23, 2023
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