[3.14] gh-143602: Fix duplicate buffer exports in io.BytesIO.write (#143629) #143872
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…thon#143629) Fix an inconsistency issue in io.BytesIO.write() where the buffer was exported twice, which could lead to unexpected data overwrites and position drift when the buffer changes between exports. (cherry picked from commit c461aa9)
serhiy-storchaka
approved these changes
Jan 15, 2026
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Thanks @vstinner for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13. |
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Sorry, @vstinner, I could not cleanly backport this to |
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GH-143878 is a backport of this pull request to the 3.13 branch. |
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Fix an inconsistency issue in io.BytesIO.write() where the buffer was exported twice, which could lead to unexpected data overwrites and position drift when the buffer changes between exports.
(cherry picked from commit c461aa9)