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gh-128212: Fix race in _PyUnicode_CheckConsistency #128367

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merged 1 commit into from
Jan 2, 2025
Merged

gh-128212: Fix race in _PyUnicode_CheckConsistency #128367

merged 1 commit into from
Jan 2, 2025

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colesbury
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@colesbury colesbury commented Dec 30, 2024 •
edited by bedevere-app bot
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There was a data race on the utf8 field between PyUnicode_SET_UTF8 and _PyUnicode_CheckConsistency. Use the _PyUnicode_UTF8() accessor, which uses an atomic load internally, to avoid the data race.

@colesbury
pythongh-128212: Fix race in _PyUnicode_CheckConsistency
3bb69e1 
There was a data race on the utf8 field between `PyUnicode_SET_UTF8` and
`_PyUnicode_CheckConsistency`. Use the `_PyUnicode_UTF8()` accessor,
which uses an atomic load internally, to avoid the data race.
@bedevere-app bedevere-app bot mentioned this pull request Dec 30, 2024
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@colesbury colesbury merged commit 8eebe4e into python:main Jan 2, 2025
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@colesbury colesbury deleted the gh-128212-PyUnicode-CheckConsistency branch January 2, 2025 19:02
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@kumaraditya303 kumaraditya303 kumaraditya303 approved these changes

@mpage mpage Awaiting requested review from mpage

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@colesbury @kumaraditya303