tests: internal: Plug an uninitialized coro stack

[cosmo0920]

Without this uninitialized coro stack, this missing line causes SEGV on macOS with flb-it-network.

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Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

Summary by CodeRabbit

• Bug Fixes
  • Improved coroutine-related test reliability by ensuring the coroutine subsystem is initialized before use.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: b09e9cec-2d4c-44e9-a406-4f5191645cae

📥 Commits

Reviewing files that changed from the base of the PR and between cbe1253 and 6a2b3af.

📒 Files selected for processing (1)

• tests/internal/network.c

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📝 Walkthrough

Walkthrough

The parent-stack callback test now initializes the coroutine subsystem before it creates and uses coroutine threads.

Changes

Network test coroutine setup

Layer / File(s)	Summary
Initialize coroutine support tests/internal/network.c	The test calls flb_coro_init() before coroutine thread initialization.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• fluent/fluent-bit#11711: Initializes the coroutine subsystem before coroutine use in another test.

Suggested reviewers: edsiper

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the test change that fixes an uninitialized coroutine stack.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cosmo0920-plug-segv-on-network-test-case

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[chatgpt-codex-connector]

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