René's URL Explorer Experiment


Title: bpo-42500: Fix recursion in or after except by markshannon · Pull Request #23568 · python/cpython · GitHub

Open Graph Title: bpo-42500: Fix recursion in or after except by markshannon · Pull Request #23568 · python/cpython

X Title: bpo-42500: Fix recursion in or after except by markshannon · Pull Request #23568 · python/cpython

Description: Currently we try to track whether we are handling an exception, and adapt behavior accordingly. This is fragile, and may cause the C stack to overflow, even if the Python stack does not. Instead, this PR allows some headroom for exception formatting and initialization code. This means we can create exceptions and handle RecursionErrors more reliably. This is still an imperfect solution, as we really should distinguish between recursion errors (the Python stack is too deep) and stack overflow errors (the C stack is near exhaustion). https://bugs.python.org/issue42500

Open Graph Description: Currently we try to track whether we are handling an exception, and adapt behavior accordingly. This is fragile, and may cause the C stack to overflow, even if the Python stack does not. Instead, t...

X Description: Currently we try to track whether we are handling an exception, and adapt behavior accordingly. This is fragile, and may cause the C stack to overflow, even if the Python stack does not. Instead, t...

Opengraph URL: https://github.com/python/cpython/pull/23568

X: @github

direct link

Domain: github.com

route-pattern/:user_id/:repository/pull/:id/files(.:format)
route-controllerpull_requests
route-actionfiles
fetch-noncev2:1c21eca0-1519-42ec-22ca-c961849b709b
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-id9756:2BEEF:1501F21:1C91E8A:6A5467DE
html-safe-nonced2b4cbe70be3c50b740b53426a8c33662efdf1122485b2a6fc38f1e7b8eb2ada
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiI5NzU2OjJCRUVGOjE1MDFGMjE6MUM5MUU4QTo2QTU0NjdERSIsInZpc2l0b3JfaWQiOiI2OTIzNDM3NzEwNDIzMzg2MDc4IiwicmVnaW9uX2VkZ2UiOiJpYWQiLCJyZWdpb25fcmVuZGVyIjoiaWFkIn0=
visitor-hmac9030c56474d7de3e77f0b12d7b70561e6fa73d8cb5db92145bab2b92acba16af
hovercard-subject-tagpull_request:529594579
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///pull_requests/show/files
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/python/cpython/pull/23568/files
twitter:imagehttps://avatars.githubusercontent.com/u/9448417?s=400&v=4
twitter:cardsummary_large_image
og:imagehttps://avatars.githubusercontent.com/u/9448417?s=400&v=4
og:image:altCurrently we try to track whether we are handling an exception, and adapt behavior accordingly. This is fragile, and may cause the C stack to overflow, even if the Python stack does not. Instead, t...
og:site_nameGitHub
og:typeobject
hostnamegithub.com
expected-hostnamegithub.com
Noneb9a586c06a05a7a86fc7e3f4dbd03e42f6869085879aa184aa6369456dbd50fb
turbo-cache-controlno-preview
diff-viewunified
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 full-width
disable-turbotrue
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release6d28624802c2f7d9500239dd6870ed7031b7353b
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python/cpython/pull/23568/files#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F23568%2Ffiles
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub Copilot appDirect agents from issue to mergehttps://github.com/features/ai/github-app
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
View all resourceshttps://github.com/resources
GitHub SponsorsFund open source developershttps://github.com/open-source/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/open-source/accelerator
GitHub Starshttps://stars.github.com
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/enterprise/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%2F23568%2Ffiles
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%2Fpull_requests%2Fshow%2Ffiles&source=header-repo&source_repo=python%2Fcpython
Reloadhttps://github.com/python/cpython/pull/23568/files
Reloadhttps://github.com/python/cpython/pull/23568/files
Reloadhttps://github.com/python/cpython/pull/23568/files
Please reload this pagehttps://github.com/python/cpython/pull/23568/files
python https://github.com/python
cpythonhttps://github.com/python/cpython
Please reload this pagehttps://github.com/python/cpython/pull/23568/files
Notifications https://github.com/login?return_to=%2Fpython%2Fcpython
Fork 35k https://github.com/login?return_to=%2Fpython%2Fcpython
Star 73.8k https://github.com/login?return_to=%2Fpython%2Fcpython
Code https://github.com/python/cpython
Issues 5k+ https://github.com/python/cpython/issues
Pull requests 2.3k https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security and quality 0 https://github.com/python/cpython/security
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 and quality 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
markshannonhttps://github.com/markshannon
python:masterhttps://github.com/python/cpython/tree/master
markshannon:fix-recursion-in-excepthttps://github.com/markshannon/cpython/tree/fix-recursion-in-except
Conversation 4 https://github.com/python/cpython/pull/23568
Commits 2 https://github.com/python/cpython/pull/23568/commits
Checks 0 https://github.com/python/cpython/pull/23568/checks
Files changed https://github.com/python/cpython/pull/23568/files
Please reload this pagehttps://github.com/python/cpython/pull/23568/files
bpo-42500: Fix recursion in or after except https://github.com/python/cpython/pull/23568/files#top
Show all changes 2 commits https://github.com/python/cpython/pull/23568/files
0e182dc Use counter, rather boolean state when handling soft overflows. markshannon Nov 30, 2020 https://github.com/python/cpython/pull/23568/commits/0e182dc0c55d1f9e6718f923b4098ade33e195b2
04d97f3 Add NEWS. markshannon Nov 30, 2020 https://github.com/python/cpython/pull/23568/commits/04d97f3ba466607023050e278ef36fc8ef144868
Clear filters https://github.com/python/cpython/pull/23568/files
Please reload this pagehttps://github.com/python/cpython/pull/23568/files
Please reload this pagehttps://github.com/python/cpython/pull/23568/files
pystate.h https://github.com/python/cpython/pull/23568/files#diff-fefbbf791abe2a1b6d9cab39778d388ebb9135eeefbd734e463aac75d1979e7f
pycore_ceval.h https://github.com/python/cpython/pull/23568/files#diff-9e7eb7e81667528dfa3a35bbf32fe622d4721c3c71385ea0ea2250abbd15d545
test_exceptions.py https://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
test_sys.py https://github.com/python/cpython/pull/23568/files#diff-f3ae0e3fbb12fe0717e2d9d8801f5d9f3091c34254d1302b228422d7d07fdc5d
2020-11-30-14-27-29.bpo-42500.excVKU.rst https://github.com/python/cpython/pull/23568/files#diff-bfdfafce8a7e31052d0d18710a71ff41b5835557be1b4e66ba0759ceccb72cf8
ceval.c https://github.com/python/cpython/pull/23568/files#diff-c22186367cbe20233e843261998dc027ae5f1f8c0d2e778abfa454ae74cc59de
errors.c https://github.com/python/cpython/pull/23568/files#diff-c37c836d0535b79d87b8eb0652c59ac0c2aeb1461bcb2274bee82656cecacad4
pystate.c https://github.com/python/cpython/pull/23568/files#diff-7ac11e526f79b42d6ea9d3592cb99da46775640c69fa5510f4a6de87cced7141
sysmodule.c https://github.com/python/cpython/pull/23568/files#diff-a3a5c73931235f7f344c072dc755d6508e13923db3f5d581c5e88652075871cb
Include/cpython/pystate.hhttps://github.com/python/cpython/pull/23568/files#diff-fefbbf791abe2a1b6d9cab39778d388ebb9135eeefbd734e463aac75d1979e7f
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Include/cpython/pystate.h
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-fefbbf791abe2a1b6d9cab39778d388ebb9135eeefbd734e463aac75d1979e7f
https://github.com/python/cpython/pull/23568/files#diff-fefbbf791abe2a1b6d9cab39778d388ebb9135eeefbd734e463aac75d1979e7f
Include/internal/pycore_ceval.hhttps://github.com/python/cpython/pull/23568/files#diff-9e7eb7e81667528dfa3a35bbf32fe622d4721c3c71385ea0ea2250abbd15d545
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Include/internal/pycore_ceval.h
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-9e7eb7e81667528dfa3a35bbf32fe622d4721c3c71385ea0ea2250abbd15d545
https://github.com/python/cpython/pull/23568/files#diff-9e7eb7e81667528dfa3a35bbf32fe622d4721c3c71385ea0ea2250abbd15d545
Lib/test/test_exceptions.pyhttps://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Lib/test/test_exceptions.py
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
https://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
https://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
https://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
https://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
https://github.com/python/cpython/pull/23568/files#diff-3dbd58a46964dc5908595a1caa552fa3f5e2e46610679634ffc1064fd7cc3c8f
Lib/test/test_sys.pyhttps://github.com/python/cpython/pull/23568/files#diff-f3ae0e3fbb12fe0717e2d9d8801f5d9f3091c34254d1302b228422d7d07fdc5d
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Lib/test/test_sys.py
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-f3ae0e3fbb12fe0717e2d9d8801f5d9f3091c34254d1302b228422d7d07fdc5d
https://github.com/python/cpython/pull/23568/files#diff-f3ae0e3fbb12fe0717e2d9d8801f5d9f3091c34254d1302b228422d7d07fdc5d
https://github.com/python/cpython/pull/23568/files#diff-f3ae0e3fbb12fe0717e2d9d8801f5d9f3091c34254d1302b228422d7d07fdc5d
https://github.com/python/cpython/pull/23568/files#diff-f3ae0e3fbb12fe0717e2d9d8801f5d9f3091c34254d1302b228422d7d07fdc5d
Misc/NEWS.d/next/Core and Builtins/2020-11-30-14-27-29.bpo-42500.excVKU.rsthttps://github.com/python/cpython/pull/23568/files#diff-bfdfafce8a7e31052d0d18710a71ff41b5835557be1b4e66ba0759ceccb72cf8
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Misc/NEWS.d/next/Core%20and%20Builtins/2020-11-30-14-27-29.bpo-42500.excVKU.rst
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
Python/ceval.chttps://github.com/python/cpython/pull/23568/files#diff-c22186367cbe20233e843261998dc027ae5f1f8c0d2e778abfa454ae74cc59de
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Python/ceval.c
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-c22186367cbe20233e843261998dc027ae5f1f8c0d2e778abfa454ae74cc59de
https://github.com/python/cpython/pull/23568/files#diff-c22186367cbe20233e843261998dc027ae5f1f8c0d2e778abfa454ae74cc59de
Python/errors.chttps://github.com/python/cpython/pull/23568/files#diff-c37c836d0535b79d87b8eb0652c59ac0c2aeb1461bcb2274bee82656cecacad4
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Python/errors.c
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-c37c836d0535b79d87b8eb0652c59ac0c2aeb1461bcb2274bee82656cecacad4
https://github.com/python/cpython/pull/23568/files#diff-c37c836d0535b79d87b8eb0652c59ac0c2aeb1461bcb2274bee82656cecacad4
https://github.com/python/cpython/pull/23568/files#diff-c37c836d0535b79d87b8eb0652c59ac0c2aeb1461bcb2274bee82656cecacad4
https://github.com/python/cpython/pull/23568/files#diff-c37c836d0535b79d87b8eb0652c59ac0c2aeb1461bcb2274bee82656cecacad4
Python/pystate.chttps://github.com/python/cpython/pull/23568/files#diff-7ac11e526f79b42d6ea9d3592cb99da46775640c69fa5510f4a6de87cced7141
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Python/pystate.c
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-7ac11e526f79b42d6ea9d3592cb99da46775640c69fa5510f4a6de87cced7141
https://github.com/python/cpython/pull/23568/files#diff-7ac11e526f79b42d6ea9d3592cb99da46775640c69fa5510f4a6de87cced7141
Python/sysmodule.chttps://github.com/python/cpython/pull/23568/files#diff-a3a5c73931235f7f344c072dc755d6508e13923db3f5d581c5e88652075871cb
View file https://github.com/markshannon/cpython/blob/04d97f3ba466607023050e278ef36fc8ef144868/Python/sysmodule.c
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/23568/{{ revealButtonHref }}
https://github.com/python/cpython/pull/23568/files#diff-a3a5c73931235f7f344c072dc755d6508e13923db3f5d581c5e88652075871cb
https://github.com/python/cpython/pull/23568/files#diff-a3a5c73931235f7f344c072dc755d6508e13923db3f5d581c5e88652075871cb
https://github.com/python/cpython/pull/23568/files#diff-a3a5c73931235f7f344c072dc755d6508e13923db3f5d581c5e88652075871cb
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.