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`_process_message_background` finished a turn, found a queued follow-up, and drained it via `await self._process_message_background(pending_event, session_key)`. Each chained follow-up added a frame to the call stack instead of starting fresh. Under sustained pending-queue activity (e.g. a user sending follow-ups faster than the agent finishes turns) the C stack would exhaust at ~2000 nested frames and SIGSEGV the process. Mirror the late-arrival drain pattern that already exists in the same function: spawn a new `asyncio.create_task(...)` for the pending event and return so the current frame can unwind. The new task takes ownership via `_session_tasks[session_key]`. The late-arrival drain in `finally` could now race with the in-band drain across the `await typing_task` / `await stop_typing` window, so add a guard: if `_session_tasks[session_key]` is no longer the current task, an in-band drain already spawned a follow-up task — re-queue the late-arrival event so that task picks it up after its current event, instead of spawning a second concurrent task for the same session_key. Regression test (`test_pending_drain_no_recursion.py`) chains 12 follow-ups and asserts the recorded `_process_message_background` stack depth stays bounded at handler entry. Pre-fix: depths grow linearly `[1,2,3,…,12]`. Post-fix: all depths are `1`. `test_duplicate_reply_suppression::test_stale_response_suppressed_when_interrupted` called `_process_message_background` directly and implicitly relied on the old recursive `await` semantic — updated to wait for the spawned drain task before checking the sent list. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> |
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| .. | ||
| qqbot | ||
| __init__.py | ||
| ADDING_A_PLATFORM.md | ||
| api_server.py | ||
| base.py | ||
| bluebubbles.py | ||
| dingtalk.py | ||
| discord.py | ||
| email.py | ||
| feishu.py | ||
| feishu_comment.py | ||
| feishu_comment_rules.py | ||
| helpers.py | ||
| homeassistant.py | ||
| matrix.py | ||
| mattermost.py | ||
| signal.py | ||
| slack.py | ||
| sms.py | ||
| telegram.py | ||
| telegram_network.py | ||
| webhook.py | ||
| wecom.py | ||
| wecom_callback.py | ||
| wecom_crypto.py | ||
| weixin.py | ||
| whatsapp.py | ||
| yuanbao.py | ||
| yuanbao_media.py | ||
| yuanbao_proto.py | ||
| yuanbao_sticker.py | ||