gh-130673: Gracefully handle section in jit build

[rennsax]

Fix #130673

• Issue: JIT build crashes on x86_64-linux with LLVM 18 #130673

[cpython-cla-bot]

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[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[ZeroIntensity]

Thanks for doing this! Did you confirm that this fixes your build?

Per the bot, please add a blurb entry to the Build section. No need to force-push either; it just makes reviewing more difficult, and everything is squashed at the end anyway. You might want to look at the devguide for some advice on PRs.

[rennsax]

Thanks for doing this! Did you confirm that this fixes your build?

Yeah, I've tested on 3.13.2 and main branch. It just works.

Per the bot, please add a blurb entry to the Build section.

Thanks for your remind! This is my first time opening PR for CPython and thanks for your review!

[brandtbucher]

Looks great, thanks. Mind adding a comment explaining why we're returning early here?

[rennsax]

Does this CI failure matter?

[miss-islington-app]

Thanks @rennsax for the PR, and @brandtbucher for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖

[bedevere-app]

GH-131749 is a backport of this pull request to the 3.13 branch.