René's URL Explorer Experiment


Title: Skip GNU backtrace test on Arm 32-bit by diegorusso · Pull Request #149493 · python/cpython · GitHub

Open Graph Title: Skip GNU backtrace test on Arm 32-bit by diegorusso · Pull Request #149493 · python/cpython

X Title: Skip GNU backtrace test on Arm 32-bit by diegorusso · Pull Request #149493 · python/cpython

Description: backtrace() and GDB use different unwinding paths. On AArch64, runtime unwinding normally uses DWARF CFI in .eh_frame / .eh_frame_hdr. On 32-bit ARM EABI, the runtime unwind format is .ARM.exidx / .ARM.extab, as specified by the Arm EHABI (https://github.com/ARM-software/abi-aa/blob/main/ehabi32/ehabi32.rst#the-object-producer-interface) GDB can still unwind the 32-bit ARM binary because it can read debugger-only DWARF CFI from .debug_frame, while glibc backtrace() runs inside the process and needs runtime unwind metadata. Without -funwind-tables, the 32-bit ARM build has effectively empty runtime unwind metadata: .ARM.exidx contains 1 entry: _start: cantunwind With -funwind-tables, GCC emits the ARM EHABI runtime unwind tables needed by backtrace(). GCC documents -funwind-tables as generating the needed static unwind data without otherwise changing generated code. This PR skips the GNU backtrace unwind test only on 32-bit Arm builds that lack -funwind-tables, instead of skipping all 32-bit Arm builds.

Open Graph Description: backtrace() and GDB use different unwinding paths. On AArch64, runtime unwinding normally uses DWARF CFI in .eh_frame / .eh_frame_hdr. On 32-bit ARM EABI, the runtime unwind format is .ARM.exidx / ...

X Description: backtrace() and GDB use different unwinding paths. On AArch64, runtime unwinding normally uses DWARF CFI in .eh_frame / .eh_frame_hdr. On 32-bit ARM EABI, the runtime unwind format is .ARM.exidx / ...

Opengraph URL: https://github.com/python/cpython/pull/149493

X: @github

direct link

Domain: github.com

react-profiling0
react-import-mapreact,react-dom,react-dom/client,react-dom/profiling,react-is,react-reconciler,react/compiler-runtime,react/jsx-dev-runtime,react/jsx-runtime,scheduler@d5750093facf
route-pattern/:user_id/:repository/pull/:id/files(.:format)
route-controllerpull_requests
route-actionfiles
fetch-noncev2:3ae39204-095d-1e57-d467-515c59a45ad3
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idB3D0:89865:2AE7B1:3A63D0:6AECB6DB
html-safe-noncef34ead3f028aa3bd455e46fc0676dd59bab3bfd9d989a2b678d65c0a44944847
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJCM0QwOjg5ODY1OjJBRTdCMTozQTYzRDA6NkFFQ0I2REIiLCJ2aXNpdG9yX2lkIjoiODM4MjgwOTA0MDAzMDA1NDEwNyIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmac1d9397dd7213f29445d172be0165e40d42b2e908164ac2e1ff64863bb32537ec
hovercard-subject-tagpull_request:3643080427
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/149493/files
twitter:imagehttps://avatars.githubusercontent.com/u/342108?s=400&v=4
twitter:cardsummary_large_image
og:imagehttps://avatars.githubusercontent.com/u/342108?s=400&v=4
og:image:altbacktrace() and GDB use different unwinding paths. On AArch64, runtime unwinding normally uses DWARF CFI in .eh_frame / .eh_frame_hdr. On 32-bit ARM EABI, the runtime unwind format is .ARM.exidx / ...
og:site_nameGitHub
og:typeobject
hostnamegithub.com
expected-hostnamegithub.com
None95ae5445dec4cded2bc4f9d97ede92b9116c0bf381a08a5c844b60b5bddcbc97
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
disable-turbotrue
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
releasedb4ef601a7f034ae2a68e17d6eeaeb7ee9470192
ui-targetcanary-2
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python/cpython/pull/149493/files#start-of-content
https://github.com/
Sign inhttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F149493%2Ffiles
GitHubRepository hosting, code review, and collaborationhttps://github.com/platform
CopilotAI coding agent for tasks, projects, and automated workhttps://github.com/features/copilot
ActionsCI/CD and automationhttps://github.com/features/actions
Code QualityQuality analysis, fixes, and enforcementhttps://github.com/features/code-quality
CodespacesCloud development environmentshttps://github.com/features/codespaces
Code SecurityVulnerability detection and remediationhttps://github.com/security/advanced-security/code-security
Secret ProtectionSecret scanning and leak preventionhttps://github.com/security/advanced-security/secret-protection
All Featureshttps://github.com/features
Documentationhttps://docs.github.com/en
Traininghttps://learn.github.com/skills
Certificationshttps://learn.github.com/credentials
Build with Copilothttps://github.com/features/ai
Customize Copilothttps://docs.github.com/en/copilot/how-tos/copilot-on-github/customize-copilot/customize-copilot-overview
Integrationshttps://github.com/marketplace
Trending reposhttps://github.com/trending
GitHub Sponsorshttps://github.com/open-source/sponsors
Developer articleshttps://github.com/resources/articles
ChangelogYour source for the latest features, improvements, and fixes across GitHub products, all in one place.https://github.blog/changelog/
Enterpriseshttps://github.com/enterprise
Teamhttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
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
See all industrieshttps://github.com/solutions/industry
Why GitHubhttps://github.com/why-github
Customer Storieshttps://github.com/customer-stories
Business insightshttps://github.com/solutions/executive-insights
Trust Centerhttps://github.com/trust-center
GitHub Advanced SecurityEnterprise-grade code securityhttps://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
Documentationhttps://docs.github.com/en
Resource centerhttps://github.com/resources
Bloghttps://github.blog/
Events & webinarshttps://github.com/resources/events
Community Forumhttps://github.com/orgs/community/discussions
Customer Storieshttps://github.com/customer-stories
Integrationshttps://github.com/marketplace
Customer supporthttps://help.github.com/
Traininghttps://learn.github.com/skills
GitHub Statushttps://www.githubstatus.com/
Abouthttps://github.com/about
Partnershttps://github.com/partners
Changeloghttps://github.blog/changelog/
GitHub UniverseThe event for developers, by developers — talks, workshops, and what’s next for GitHub.https://githubuniverse.com/
Pricinghttps://github.com/pricing
Sign inhttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F149493%2Ffiles
Sign uphttps://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/149493/files
Reloadhttps://github.com/python/cpython/pull/149493/files
Reloadhttps://github.com/python/cpython/pull/149493/files
pythonhttps://github.com/python
cpythonhttps://github.com/python/cpython
Codehttps://github.com/python/cpython
Issues5k+ (5k+)https://github.com/python/cpython/issues
Pull requests2.3k (2.3k)https://github.com/python/cpython/pulls
Actionshttps://github.com/python/cpython/actions
Projectshttps://github.com/python/cpython/projects
Security and qualityhttps://github.com/python/cpython/security
Insightshttps://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
diegorussohttps://github.com/diegorusso
python:mainhttps://github.com/python/cpython/tree/main
diegorusso:backtrace-armhttps://github.com/diegorusso/cpython/tree/backtrace-arm
Conversation 18 https://github.com/python/cpython/pull/149493
Commits 5 https://github.com/python/cpython/pull/149493/commits
Checks 55 https://github.com/python/cpython/pull/149493/checks
Files changed https://github.com/python/cpython/pull/149493/files
Please reload this pagehttps://github.com/python/cpython/pull/149493/files
Skip GNU backtrace test on Arm 32-bit https://github.com/python/cpython/pull/149493/files#top
Show all changes 5 commits https://github.com/python/cpython/pull/149493/files
3358e2d Skip GNU backtrace test on Arm 32-bit without unwind tables diegorusso May 7, 2026 https://github.com/python/cpython/pull/149493/commits/3358e2d05f5dd1b6710cbc9199af0d9ab2548a80
cb52a24 Refine ARM GNU backtrace unwind-table detection diegorusso May 7, 2026 https://github.com/python/cpython/pull/149493/commits/cb52a24b980f376055b6618923690b9683abddd9
61015e1 Skip GNU backtrace tests on 32-bit Arm diegorusso May 7, 2026 https://github.com/python/cpython/pull/149493/commits/61015e1651bc434daa3c9375eaf8bab5c9c1df73
04bd87a Merge branch 'main' into backtrace-arm diegorusso May 7, 2026 https://github.com/python/cpython/pull/149493/commits/04bd87add1ccaf30ed9a1c4d07a56647eeefc685
42177ce Merge branch 'main' into backtrace-arm StanFromIreland May 7, 2026 https://github.com/python/cpython/pull/149493/commits/42177ce3cca3e65f9fbdbd8151a81e76c25b62d5
Clear filters https://github.com/python/cpython/pull/149493/files
Please reload this pagehttps://github.com/python/cpython/pull/149493/files
Please reload this pagehttps://github.com/python/cpython/pull/149493/files
Lib/test/test_frame_pointer_unwind.pyhttps://github.com/python/cpython/pull/149493/files#diff-1551b22c7da9f10f5bcb318686edc665ca5fca955c05efae7db509ae9ad12d0b
View file https://github.com/diegorusso/cpython/blob/42177ce3cca3e65f9fbdbd8151a81e76c25b62d5/Lib/test/test_frame_pointer_unwind.py
Open in desktop https://desktop.github.com
https://github.co/hiddenchars
https://github.com/python/cpython/pull/149493/{{ revealButtonHref }}
https://github.com/python/cpython/pull/149493/files#diff-1551b22c7da9f10f5bcb318686edc665ca5fca955c05efae7db509ae9ad12d0b
https://github.com/python/cpython/pull/149493/files#diff-1551b22c7da9f10f5bcb318686edc665ca5fca955c05efae7db509ae9ad12d0b
https://github.com/python/cpython/pull/149493/files#diff-1551b22c7da9f10f5bcb318686edc665ca5fca955c05efae7db509ae9ad12d0b
https://github.com/python/cpython/pull/149493/files#diff-1551b22c7da9f10f5bcb318686edc665ca5fca955c05efae7db509ae9ad12d0b
Please reload this pagehttps://github.com/python/cpython/pull/149493/files
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.