tokio-1.47.5
expressjs/expresstokio-1.47.5May 7, 2026by Darksonn
AI Summary
This release applies the same synchronization fixes found in later versions to the 1.47.x maintenance branch to ensure consistency across older versions.
Key Highlights
- Fixed underflow in mpsc channel `len()` calculation
- Fixed notification logic in `OwnedPermit::release()`
- Fixed `RwLock` to require `max_readers != 0`
- Fixed `try_recv()` to return `Empty` when permits are outstanding
Full Release Notes
# 1.47.5 (May 7th, 2026) ### Fixed * sync: fix underflow in mpsc channel `len()` ([#8062]) * sync: notify receivers in mpsc `OwnedPermit::release()` method ([#8075]) * sync: require that an `RwLock` has `max_readers != 0` ([#8076]) * sync: return `Empty` from `try_recv()` when mpsc is closed with outstanding permits ([#8074]) [#8062]: https://github.com/tokio-rs/tokio/pull/8062 [#8074]: https://github.com/tokio-rs/tokio/pull/8074 [#8075]: https://github.com/tokio-rs/tokio/pull/8075 [#8076]: https://github.com/tokio-rs/tokio/pull/8076