[Martin-Pitt]

LLGLTFMaterialList::applyOverrideMessage looks up the sending region by host and already skips the override when there is none, but it asserts first. An override can arrive on a neighbour's circuit after LLWorld has removed that region, or from a host that matches no region. In a build with asserts on, the assert shows a message box and the viewer dies. We hit it on the Lua Beta regions with several neighbours connected, twice six seconds apart and with no teleport.

This removes the assert and logs a warning (GLTF) when it drops an override. Queuing the override would not help: the region's object cache, where it would be stored, has already been removed.

Linden Lab's viewer and Firestorm still have the same llassert(region).

🤖 Generated with Claude Code

[coderabbitai]

Summary

Summary by CodeRabbit

• Bug Fixes
  • Material overrides from unknown regions are now ignored with a warning instead of triggering an assertion.

The GLTF material override handler no longer asserts when the sender’s region is unknown. It drops the override and logs the sender host. Processing continues as before when the region exists.

Changes: GLTF Override Handling

Layer / File(s)	Summary
Unknown-region handling indra/newview/llgltfmateriallist.cpp	The handler drops overrides from unknown regions and logs the sender host. It no longer asserts that the sender’s region exists.

Estimated code review effort: 2 (Simple) | ~5 minutes

Change: Bug fix

Possibly related PRs

• AlchemyViewer/Alchemy#601: This PR removes departed regions from LLWorld, which can leave the override handler with an unknown sender region.

Suggested labels: c/cpp, viewer

Suggested reviewers: ryemutt

Merge Risk: Minimal · up to 330e7

The change safely drops overrides from unknown regions instead of asserting, while preserving normal override processing. No merge-blocking issue was identified.

Pre-merge checks: 3 · 2

Failed checks: 2 warnings

Check name	Status	Explanation	Resolution
Description check		The description clearly explains the assertion failure, the affected scenario, the new warning behavior, and why queuing is not useful. However, it omits the required template sections for Related Iss…	Add the required template sections. Provide a related issue link with reproduction and testing details, complete the checklist, and include any relevant additional notes.
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 3 passed

Check name	Status	Explanation
Title check		The title clearly and concisely describes the main change: dropping a GLTF material override when the viewer no longer has the sending region.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Description check

Explanation

The description clearly explains the assertion failure, the affected scenario, the new warning behavior, and why queuing is not useful. However, it omits the required template sections for Related Issues, the issue link, the checklist, and Additional Notes.

Resolution

Add the required template sections. Provide a related issue link with reproduction and testing details, complete the checklist, and include any relevant additional notes.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 1 functions across 1 files.

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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_{A rabbit watched the regions pass,
An override arrived too late.
The viewer logged its sender’s host,
Then dropped the message at the gate.
Known regions still proceed as planned.}

[coderabbitai]

---

Prompt to fix all issues

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Failed pre-merge checks:
- Description check:
Add the required template sections. Provide a related issue link with
reproduction and testing details, complete the checklist, and include any
relevant additional notes.

- Docstring Coverage:
Write docstrings for the functions missing them to satisfy the coverage
threshold.

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• Run ID: cb25767b-f388-495c-9a18-8809a117eb5f

Commits

Reviewing files that changed from the base of the PR and between acc3866 and 330e7c7.

Files selected for processing: 1

• indra/newview/llgltfmateriallist.cpp

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