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GeezerVison is showing github.com — [3.13] gh-87595: Support mmap.size() for anonymous mapping on Unix (GH-24781) by miss-islington · Pull Request #138405 · python/cpython

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@miss-islington

@miss-islington miss-islington commented Sep 2, 2025 •
edited by github-actions Bot
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Previously, the size would be returned on Windows and an OSError would
be raised on Unix.

Also, raise ValueError instead of OSError for trackfd=False.
(cherry picked from commit 32032ee)

Co-authored-by: Zackery Spytz [email protected]
Co-authored-by: Serhiy Storchaka [email protected]

  • Issue: mmap.size() raises OSError on Unix for anonymous memory #87595

📚 Documentation preview 📚: https://cpython-previews--138405.org.readthedocs.build/

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@ZackerySpytz @serhiy-storchaka @miss-islington
pythongh-87595: Support mmap.size() for anonymous mapping on Unix (py…
8c45634
…thonGH-24781)

Previously, the size would be returned on Windows and an OSError would
be raised on Unix.

Also, raise ValueError instead of OSError for trackfd=False.
(cherry picked from commit 32032ee)

Co-authored-by: Zackery Spytz <[email protected]>
Co-authored-by: Serhiy Storchaka <[email protected]>
@bedevere-app bedevere-app Bot added the awaiting review label Sep 2, 2025
This was referenced Sep 2, 2025
mmap.size() raises OSError on Unix for anonymous memory #87595
Closed
gh-87595: mmap.size() now returns the size on Unix for anonymous memory #24781
Merged
@serhiy-storchaka serhiy-storchaka closed this Sep 2, 2025
@miss-islington
miss-islington deleted the backport-32032ee-3.13 branch January 2, 2026 17:55
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3 participants

@miss-islington @serhiy-storchaka @ZackerySpytz
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