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`test_sys` fails with `PYTHON_JIT_STRESS=1` · Issue #144991 · python/cpython · GitHub

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test_sys fails with PYTHON_JIT_STRESS=1 #144991

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test_sys fails with PYTHON_JIT_STRESS=1#144991
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testsTests in the Lib/test dirtopic-JITtype-bugAn unexpected behavior, bug, or error

Description

markshannon
opened on Feb 19, 2026

Bug report

Bug description:

test_jit_is_active fails.
The bug is in the test, not the code, as _testinternalcapi uses a hard-coded value for the JIT threshold instead of the value from the config. It was probably overlooked in the process of implementing #141504

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

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  1. markshannon
    added
    type-bugAn unexpected behavior, bug, or error
    on Feb 19, 2026

  2. markshannon commented on Feb 19, 2026

    markshannon
    on Feb 19, 2026
    MemberAuthor

    @corona10

  3. StanFromIreland
    added
    testsTests in the Lib/test dir
    topic-JIT
    on Feb 19, 2026

  4. corona10 commented on Feb 19, 2026

    corona10
    on Feb 19, 2026
    Member

    I will take a look at.

  5. corona10
    self-assigned this
    on Feb 25, 2026
  6. corona10
    added 2 commits that reference this issue on Mar 4, 2026

    pythongh-144991: Use runtime JIT threshold in _testinternalcapi

    8c296a2

    gh-144991: Use runtime JIT threshold in _testinternalcapi (gh-145496)

    8b54313
  7. corona10
    closed this as completedon Mar 5, 2026
  8. ljfp
    added a commit that references this issue on Apr 25, 2026

    pythongh-144991: Use runtime JIT threshold in _testinternalcapi (pyth…

    a83a8d3
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testsTests in the Lib/test dirtopic-JITtype-bugAn unexpected behavior, bug, or error

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