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memory leak in_PyBytes_FormatEx error path#140939

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Catch OverflowError too

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StanFromIreland added2 commits

November 5, 2025 21:32

Remove loop per Victor's review

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_testcapi.PY_SSIZE_T_MAX

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Move test

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StanFromIreland requested a review fromvstinner

November 5, 2025 21:40

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LGTM

bedevere-appbot added awaiting merge and removed awaiting core review labels

kumaraditya303 approved these changes

kumaraditya303 added type-bug

An unexpected behavior, bug, or error

needs backport to 3.13

bugs and security fixes

needs backport to 3.14bugs and security fixes labels

kumaraditya303 merged commitd6c89a2 intopython:main

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miss-islington-appbot commentedNov 6, 2025

Thanks@StanFromIreland for the PR, and@kumaraditya303 for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖

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miss-islington-appbot commentedNov 6, 2025

Sorry,@StanFromIreland and@kumaraditya303, I could not cleanly backport this to3.14 due to a conflict.
Please backport usingcherry_picker on command line.

cherry_picker d6c89a2df2c8b7603125883494e9058a88348f66 3.14

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miss-islington-appbot commentedNov 6, 2025

Sorry,@StanFromIreland and@kumaraditya303, I could not cleanly backport this to3.13 due to a conflict.
Please backport usingcherry_picker on command line.

cherry_picker d6c89a2df2c8b7603125883494e9058a88348f66 3.13

StanFromIreland deleted the bytes-leak branch

November 6, 2025 07:22

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StanFromIreland commentedNov 6, 2025

I can backport.

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bedevere-appbot commentedNov 6, 2025

GH-141154 is a backport of this pull request to the3.14 branch.

bedevere-appbot removed the needs backport to 3.14bugs and security fixes label

StanFromIreland added a commit to StanFromIreland/cpython that referenced this pull request

[3.14]pythongh-140939: Fix memory leak in_PyBytes_FormatExerror …

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…path (pythonGH-140957)(cherry picked from commitd6c89a2)Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

StanFromIreland added a commit to StanFromIreland/cpython that referenced this pull request

[3.13]pythongh-140939: Fix memory leak in_PyBytes_FormatExerror …

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…path (pythonGH-140957)(cherry picked from commitd6c89a2)Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

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bedevere-appbot commentedNov 6, 2025

GH-141155 is a backport of this pull request to the3.13 branch.

bedevere-appbot removed the needs backport to 3.13bugs and security fixes label

vstinner pushed a commit that referenced this pull request

[3.13]gh-140939: Fix memory leak in_PyBytes_FormatExerror path (G…

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…H-140957) (#141155)(cherry picked from commitd6c89a2)

vstinner pushed a commit that referenced this pull request