Wasmtime GitHub notifications bot (Oct 21 2026 at 16:11): Wasmtime GitHub notifications bot (Oct 21 2026 at 16:11):alexcrichton opened PR #14906 from alexcrichton:remove-thread-switching to bytecodealliance:main:
This commit adjusts the behavior added in #12736 where the thread identity was saved/restored around component model futures/streams being completed. Later in #13949 though the spec was refined to clarify that thread identity during lowering is not possible to witness, which meant that after that change the thread-switching was technically all dead code. Thread IDs can go away at any time and aren't required to outlive future/stream operations, so this now-vestigial code can lead to spurious traps using wrong table slots. Here all the switching is just removed entirely since it's no longer necessary.
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Wasmtime GitHub notifications bot (Oct 21 2026 at 16:12):alexcrichton requested wasmtime-core-reviewers for a review on PR #14906.
Wasmtime GitHub notifications bot (Oct 21 2026 at 16:19):alexcrichton removed the review request for wasmtime-core-reviewers from PR #14906.
Wasmtime GitHub notifications bot (Oct 21 2026 at 16:19):alexcrichton requested cfallin for a review on PR #14906.
Wasmtime GitHub notifications bot (Oct 21 2026 at 18:51):github-actions[bot] added the label wasmtime:api on PR #14906.
Wasmtime GitHub notifications bot (Oct 23 2026 at 19:01)::thumbs_up: cfallin submitted PR review.
Wasmtime GitHub notifications bot (Oct 23 2026 at 19:01):cfallin added PR #14906 Remove thread-switching around completed futures/streams to the merge queue.
Wasmtime GitHub notifications bot (Oct 23 2026 at 23:21)::check: cfallin merged PR #14906.
Wasmtime GitHub notifications bot (Oct 23 2026 at 23:21):cfallin removed PR #14906 Remove thread-switching around completed futures/streams from the merge queue.
Last updated: Oct 31 2026 at 23:03 UTC