Flight Log / langchain-ai/langchain #32160
fix: tool call streaming bug with inconsistent indices from Qwen3 — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in langchain-ai/langchain on Jul 22, 2025; merged clean in 6.9 d, merged by @mdrxy: +2,679 −2,067, 303 files, 0 reviews.
Flown by
- Lines
- +2,679 −2,067
- Files
- 303
- Commits
- 7
- Reviews
- 0
- To merge
- 6.9 d
- Task
- fix
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
The agent, GitHub Copilot, works on langchain-ai/langchain to fix a streaming bug where Qwen3 sends tool call chunks with inconsistent index values, producing duplicate tool calls. The change spans 303 files, with 2679 additions and 2067 deletions across seven commits. It received zero change requests and merged clean after 165.67 hours.
From the pull request description
Fixes a streaming bug where models like Qwen3 (using OpenAI interface) send tool call chunks with inconsistent indices, resulting in duplicate/erroneous tool calls instead of a single merged tool call. ## Problem When Qwen3 streams tool calls, it sends chunks with inconsistent `index` values: - Fi…
Excerpt (first 300 characters) — the full description is on GitHub.
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Flight timeline
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- —committedMason Daugherty
- —committedMason Daugherty
- —committedMason Daugherty
- —committedMason Daugherty
- —committedMason Daugherty
- Jul 28, 2025mergedmdrxy
- Jul 28, 2025closedmdrxy
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Cite this flight: AgentRiders Flight Log, langchain-ai/langchain#32160, record updated Nov 3, 2026, https://agentriders.com/logs/langchain-ai/langchain/32160/
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