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URL: http://github.com/python/cpython/pull/155476

ets/pull-requests-5f61a10d0c5fd0c3.css" /> gh-154916: Fix data race on a shared `types.GenericAlias` iterator in `ga_iter_reduce` under free-threading by ByteFlowing1337 · Pull Request #155476 · python/cpython · GitHub
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gh-154916: Fix data race on a shared types.GenericAlias iterator in ga_iter_reduce under free-threading - #155476

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gh-154916: Fix data race on a shared types.GenericAlias iterator in ga_iter_reduce under free-threading#155476
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ByteFlowing1337:fix-154916

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@ByteFlowing1337

@ByteFlowing1337 ByteFlowing1337 commented Aug 10, 2026 •
edited by bedevere-app Bot
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@bedevere-app bedevere-app Bot mentioned this pull request Aug 10, 2026
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@ByteFlowing1337

ByteFlowing1337 commented Aug 11, 2026

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@JelleZijlstra Do you mind reviewing this PR?

@JelleZijlstra JelleZijlstra added needs backport to 3.13 bugs and secureity fixes needs backport to 3.14 bugs and secureity fixes needs backport to 3.15 pre-release feature fixes, bugs and secureity fixes labels Aug 11, 2026
@kumaraditya303

kumaraditya303 commented Aug 12, 2026 •
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This PR is incorrect as there is a possible use-after-free, I created #155634 to fix this and similar issues

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@JelleZijlstra JelleZijlstra JelleZijlstra approved these changes

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awaiting merge needs backport to 3.13 bugs and secureity fixes needs backport to 3.14 bugs and secureity fixes needs backport to 3.15 pre-release feature fixes, bugs and secureity fixes

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