[fujitatomoya]

Case: target rolling. Three steps on one pull request: a compatible commit, then a commit that breaks ABI, then a revert of that break. The labels must follow the latest verdict, and labels removed by the bot (not by a person) must come back.

---

This is a test pull request for the ABI checker (abi.yaml / abi-report.yaml, backed by
fujitatomoya/ros2-abi-action) and the
backport-<distro> candidate labels (#2555). It exists only for fujitatomoya to verify the
action result for one specific case, and it is closed without merging once that is done.
Maintainers: nothing to review here, please ignore this pull request.

🤖 Generated with Claude Code

[fujitatomoya]

Expected result

Step 1 (comment-only commit, compatible)

• abi check: success, label ABI compatible
• backport labels added: backport-lyrical, backport-kilted, backport-jazzy, backport-humble

Step 2 (push a commit that changes the expand_topic_or_service_name() signature)

• abi check: success (advisory on rolling), sticky comment updated to Verdict: incompatible
• ABI compatible removed, ABI break added
• all four backport-* labels removed by github-actions[bot]

Step 3 (push a revert of step 2)

• abi check: success, sticky comment back to Verdict: compatible
• ABI break removed, ABI compatible added
• all four backport-* labels added again (the step 2 removals were by the bot, so they do not count as removed by hand)

[github-actions]

ABI Compliance Check

✅ Verdict: compatible

Library	Verdict	Summary
libcomponent_manager.so	✅ compatible	No ABI changes detected.
librclcpp.so	✅ compatible	No ABI changes detected.
librclcpp_action.so	✅ compatible	No ABI changes detected.
librclcpp_lifecycle.so	✅ compatible	No ABI changes detected.

✅ libcomponent_manager.so — full abidiff report

Compared:

• Base: lib-base/libcomponent_manager.so
• Head: lib-pr/libcomponent_manager.so @ 1262075

(empty report — no differences printed by abidiff)

✅ librclcpp.so — full abidiff report

Compared:

• Base: lib-base/librclcpp.so
• Head: lib-pr/librclcpp.so @ 1262075

(empty report — no differences printed by abidiff)

✅ librclcpp_action.so — full abidiff report

Compared:

• Base: lib-base/librclcpp_action.so
• Head: lib-pr/librclcpp_action.so @ 1262075

(empty report — no differences printed by abidiff)

✅ librclcpp_lifecycle.so — full abidiff report

Compared:

• Base: lib-base/librclcpp_lifecycle.so
• Head: lib-pr/librclcpp_lifecycle.so @ 1262075

(empty report — no differences printed by abidiff)

_{Updated for commit 1262075 · check run · suppressions: /home/runner/work/_temp/ros2-abi-suppressions.txt}

[fujitatomoya]

confirmed expected result, closing.