fix: replace assert with early return in out_event when _io_error is set#4852
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ssam18 wants to merge 1 commit intozeromq:masterfrom
Open
fix: replace assert with early return in out_event when _io_error is set#4852ssam18 wants to merge 1 commit intozeromq:masterfrom
ssam18 wants to merge 1 commit intozeromq:masterfrom
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When the I/O thread collects both POLLIN and POLLOUT from the same epoll_wait batch, processing the POLLIN can set _io_error via in_event_internal(), and the already-queued POLLOUT still gets dispatched to out_event() — hitting the assert and crashing. Replacing the assert with an early return handles this gracefully, consistent with the same guard already present in restart_output(). Fixes #4841.