René's URL Explorer Experiment


Title: gh-143602: Fix duplicate buffer exports in io.BytesIO.write by superboy-zjc · Pull Request #143629 · python/cpython · GitHub

Open Graph Title: gh-143602: Fix duplicate buffer exports in io.BytesIO.write by superboy-zjc · Pull Request #143629 · python/cpython

X Title: gh-143602: Fix duplicate buffer exports in io.BytesIO.write by superboy-zjc · Pull Request #143629 · python/cpython

Description: Fix a 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. Iss...

Open Graph Description: Fix a 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. Iss...

X Description: Fix a 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. Iss...

Opengraph URL: https://github.com/python/cpython/pull/143629

X: @github

direct link

Domain: github.com

route-pattern/_view_fragments/voltron/pull_requests/show/:user_id/:repository/:id/pull_request_layout(.:format)
route-controllervoltron_pull_requests_fragments
route-actionpull_request_layout
fetch-noncev2:548bf97f-0841-6584-9d8f-64013fcf42ad
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idAB4A:3F06C5:55FAED:749A00:6969E11A
html-safe-nonce572341141fc7e3206820deb324e1ea4461e9d74cc017e910d2ddd2dd20cfde26
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJBQjRBOjNGMDZDNTo1NUZBRUQ6NzQ5QTAwOjY5NjlFMTFBIiwidmlzaXRvcl9pZCI6IjE5OTgxMDI1MDEwNzUzMTI5MjIiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmac2441a3a43379b2b41aebd1c572c32df8221ca09d480a607e147aefe2de52d1ba
hovercard-subject-tagpull_request:3160865426
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///voltron/pull_requests_fragments/pull_request_layout
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/_view_fragments/voltron/pull_requests/show/python/cpython/143629/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/b8e1c90d15fdb9b961e67c105a6597a91c76492abd113e3ec230061e9124b453/python/cpython/pull/143629
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/b8e1c90d15fdb9b961e67c105a6597a91c76492abd113e3ec230061e9124b453/python/cpython/pull/143629
og:image:altFix a 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. Iss...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamesuperboy-zjc
hostnamegithub.com
expected-hostnamegithub.com
None7b32f1c7c4549428ee399213e8345494fc55b5637195d3fc5f493657579235e8
turbo-cache-controlno-preview
go-importgithub.com/python/cpython git https://github.com/python/cpython.git
octolytics-dimension-user_id1525981
octolytics-dimension-user_loginpython
octolytics-dimension-repository_id81598961
octolytics-dimension-repository_nwopython/cpython
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id81598961
octolytics-dimension-repository_network_root_nwopython/cpython
turbo-body-classeslogged-out env-production page-responsive
disable-turbofalse
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
releasebdde15ad1b403e23b08bbd89b53fbe6bdf688cad
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python/cpython/pull/143629#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F143629
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub SparkBuild and deploy intelligent appshttps://github.com/features/spark
GitHub ModelsManage and compare promptshttps://github.com/features/models
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
GitHub SponsorsFund open source developershttps://github.com/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/accelerator
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F143629
Sign up https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fvoltron%2Fpull_requests_fragments%2Fpull_request_layout&source=header-repo&source_repo=python%2Fcpython
Reloadhttps://github.com/python/cpython/pull/143629
Reloadhttps://github.com/python/cpython/pull/143629
Reloadhttps://github.com/python/cpython/pull/143629
python https://github.com/python
cpythonhttps://github.com/python/cpython
Please reload this pagehttps://github.com/python/cpython/pull/143629
Notifications https://github.com/login?return_to=%2Fpython%2Fcpython
Fork 33.9k https://github.com/login?return_to=%2Fpython%2Fcpython
Star 71.1k https://github.com/login?return_to=%2Fpython%2Fcpython
Code https://github.com/python/cpython
Issues 5k+ https://github.com/python/cpython/issues
Pull requests 2.1k https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects 31 https://github.com/python/cpython/projects
Security Uh oh! There was an error while loading. Please reload this page. https://github.com/python/cpython/security
Please reload this pagehttps://github.com/python/cpython/pull/143629
Insights https://github.com/python/cpython/pulse
Code https://github.com/python/cpython
Issues https://github.com/python/cpython/issues
Pull requests https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security https://github.com/python/cpython/security
Insights https://github.com/python/cpython/pulse
Sign up for GitHub https://github.com/signup?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
terms of servicehttps://docs.github.com/terms
privacy statementhttps://docs.github.com/privacy
Sign inhttps://github.com/login?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
Jump to bottomhttps://github.com/python/cpython/pull/143629#issue-comment-box
vstinnerhttps://github.com/vstinner
python:mainhttps://github.com/python/cpython/tree/main
superboy-zjc:issue-143602https://github.com/superboy-zjc/cpython/tree/issue-143602
gh-143602: Fix duplicate buffer exports in io.BytesIO.write https://github.com/python/cpython/pull/143629#top
vstinnerhttps://github.com/vstinner
python:mainhttps://github.com/python/cpython/tree/main
superboy-zjc:issue-143602https://github.com/superboy-zjc/cpython/tree/issue-143602
Conversation 10 https://github.com/python/cpython/pull/143629
Commits 3 https://github.com/python/cpython/pull/143629/commits
Checks 56 https://github.com/python/cpython/pull/143629/checks
Files changed 3 https://github.com/python/cpython/pull/143629/files
https://github.co/hiddenchars
https://github.com/python/cpython/pull/{{ revealButtonHref }}
https://github.com/superboy-zjc
superboy-zjchttps://github.com/superboy-zjc
Jan 9, 2026https://github.com/python/cpython/pull/143629#issue-3798320627
Please reload this pagehttps://github.com/python/cpython/pull/143629
Incorrect behavior of BytesIO.write() when the size of the written data changed during writing #143602https://github.com/python/cpython/issues/143602
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/superboy-zjc
pythongh-143602https://github.com/python/cpython/issues/143602
: Fix duplicate buffer exports in io.BytesIO.writehttps://github.com/python/cpython/pull/143629/commits/588cea5afe98f55786e5fde3cc74b7c855ae1beb
588cea5https://github.com/python/cpython/pull/143629/commits/588cea5afe98f55786e5fde3cc74b7c855ae1beb
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22
Jan 9, 2026https://github.com/python/cpython/pull/143629#event-21955744388
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
Jan 9, 2026 https://github.com/python/cpython/pull/143629#ref-issue-3796720199
Incorrect behavior of BytesIO.write() when the size of the written data changed during writing #143602 https://github.com/python/cpython/issues/143602
superboy-zjchttps://github.com/superboy-zjc
January 9, 2026 12:55https://github.com/python/cpython/pull/143629#commits-pushed-c16af76
https://github.com/superboy-zjc
pythongh-143602https://github.com/python/cpython/issues/143602
: fix sphinx lint issuehttps://github.com/python/cpython/pull/143629/commits/c16af76d02686e80615bf7fe9ed27a087e7559d6
c16af76https://github.com/python/cpython/pull/143629/commits/c16af76d02686e80615bf7fe9ed27a087e7559d6
https://github.com/superboy-zjc
pythongh-143602https://github.com/python/cpython/issues/143602
: fix sphinx parsing issuehttps://github.com/python/cpython/pull/143629/commits/761deb8f4a240e6a974433c8684963256906ceee
761deb8https://github.com/python/cpython/pull/143629/commits/761deb8f4a240e6a974433c8684963256906ceee
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
Jan 12, 2026 https://github.com/python/cpython/pull/143629#pullrequestreview-3650596953
View reviewed changes https://github.com/python/cpython/pull/143629/files/761deb8f4a240e6a974433c8684963256906ceee
vstinnerhttps://github.com/vstinner
https://github.com/python/cpython/pull/143629#pullrequestreview-3650596953
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting merge https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22
awaiting review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22
Jan 12, 2026https://github.com/python/cpython/pull/143629#event-21988663488
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
c461aa9https://github.com/python/cpython/commit/c461aa99e2fabbaf5859c0a8a93e08306ee8115d
Jan 15, 2026https://github.com/python/cpython/pull/143629#event-22072271156
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting merge https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22
Jan 15, 2026https://github.com/python/cpython/pull/143629#event-22072273313
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
needs backport to 3.13 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22needs%20backport%20to%203.13%22
needs backport to 3.14 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22needs%20backport%20to%203.14%22
Jan 15, 2026https://github.com/python/cpython/pull/143629#event-22072280352
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755325731
@superboy-zjchttps://github.com/superboy-zjc
@vstinnerhttps://github.com/vstinner
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755325737
@superboy-zjchttps://github.com/superboy-zjc
@vstinnerhttps://github.com/vstinner
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755326929
@superboy-zjchttps://github.com/superboy-zjc
@vstinnerhttps://github.com/vstinner
cherry_pickerhttps://pypi.org/project/cherry-picker/
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
vstinnerhttps://github.com/vstinner
Jan 15, 2026https://github.com/python/cpython/pull/143629#event-22072287737
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755327372
@superboy-zjchttps://github.com/superboy-zjc
@vstinnerhttps://github.com/vstinner
cherry_pickerhttps://pypi.org/project/cherry-picker/
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755354899
GH-143872https://github.com/python/cpython/pull/143872
3.14 branchhttps://github.com/python/cpython/tree/3.14
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
needs backport to 3.14 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22needs%20backport%20to%203.14%22
Jan 15, 2026https://github.com/python/cpython/pull/143629#event-22072454233
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755355867
#143872https://github.com/python/cpython/pull/143872
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
needs backport to 3.13 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22needs%20backport%20to%203.13%22
Jan 15, 2026https://github.com/python/cpython/pull/143629#event-22072459864
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755357721
@superboy-zjchttps://github.com/superboy-zjc
Please reload this pagehttps://github.com/python/cpython/pull/143629
vstinnerhttps://github.com/vstinner
Jan 15, 2026 https://github.com/python/cpython/pull/143629#ref-commit-53bcc4f
https://github.com/superboy-zjc
https://github.com/vstinner
pythongh-143602https://github.com/python/cpython/issues/143602
: Fix duplicate buffer exports in io.BytesIO.write (https://github.com/vstinner/cpython/commit/53bcc4f722f881ed51524d10fcc1a7a58477afc6
py…https://github.com/python/cpython/pull/143629
53bcc4fhttps://github.com/vstinner/cpython/commit/53bcc4f722f881ed51524d10fcc1a7a58477afc6
…thon#143629https://github.com/python/cpython/pull/143629
c461aa9https://github.com/vstinner/cpython/commit/c461aa99e2fabbaf5859c0a8a93e08306ee8115d
https://github.com/serhiy-storchaka
serhiy-storchakahttps://github.com/serhiy-storchaka
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755476451
Please reload this pagehttps://github.com/python/cpython/pull/143629
vstinnerhttps://github.com/vstinner
Jan 15, 2026 https://github.com/python/cpython/pull/143629#ref-commit-1241432
https://github.com/vstinner
https://github.com/superboy-zjc
[3.14]https://github.com/python/cpython/commit/1241432150f6342e3d38c5a80a19c8c157a4ebe8
gh-143602https://github.com/python/cpython/issues/143602
: Fix duplicate buffer exports in io.BytesIO.write (https://github.com/python/cpython/commit/1241432150f6342e3d38c5a80a19c8c157a4ebe8
#…https://github.com/python/cpython/pull/143629
1241432https://github.com/python/cpython/commit/1241432150f6342e3d38c5a80a19c8c157a4ebe8
…143629https://github.com/python/cpython/pull/143629
#143872https://github.com/python/cpython/pull/143872
gh-143602https://github.com/python/cpython/issues/143602
#143629https://github.com/python/cpython/pull/143629
c461aa9https://github.com/python/cpython/commit/c461aa99e2fabbaf5859c0a8a93e08306ee8115d
https://github.com/bedevere-bot
bedevere-bothttps://github.com/bedevere-bot
Jan 15, 2026https://github.com/python/cpython/pull/143629#issuecomment-3755927571
1241432https://github.com/python/cpython/commit/1241432150f6342e3d38c5a80a19c8c157a4ebe8
the buildbot page in the devguidehttps://devguide.python.org/buildbots/
https://buildbot.python.org/#/builders/1772/builds/811https://buildbot.python.org/#/builders/1772/builds/811
1241432https://github.com/python/cpython/commit/1241432150f6342e3d38c5a80a19c8c157a4ebe8
https://buildbot.python.org/#/builders/1772/builds/811https://buildbot.python.org/#/builders/1772/builds/811
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
Jan 15, 2026 https://github.com/python/cpython/pull/143629#ref-pullrequest-3818402854
[3.13] gh-143602: Fix duplicate buffer exports in io.BytesIO.write (#143629) (#143872) #143878 https://github.com/python/cpython/pull/143878
Sign up for freehttps://github.com/join?source=comment-repo
Sign in to commenthttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F143629
https://github.com/vstinner
vstinner https://github.com/vstinner
https://github.com/python/cpython/pull/143629/files/761deb8f4a240e6a974433c8684963256906ceee
https://github.com/vstinner
vstinner https://github.com/vstinner
Please reload this pagehttps://github.com/python/cpython/pull/143629
https://github.com/superboy-zjc
https://github.com/vstinner
https://github.com/serhiy-storchaka
https://github.com/bedevere-bot
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.