Exploring the Implementation of Sync for MPSC Senders in Rust 1.72 and 1.73

Jon and Ben discuss the highlights of the 1.72 and 1.73 releases of Rust.

This episode was recorded as part of a YouTube live stream on 2024-05-18, which you can still watch.

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Timestamps & referenced resources

[@03:49] - Rust 1.72.0

• [@04:24] - Report cfg-hidden items
• [@08:49] - Unlimited const evaluation time
  • The 2M limit
• [@12:52] - Uplifted clippy lints
• [@16:53] - Stabilized APIs
  • impl Sync for mpsc::Sender
  • String::leak
    • ACP for String::leak
    • PR filed live
• [@25:46] - Future Windows compatibility
• [@26:20] - Changelog deep-dive
  • [@26:38] - -O -
  • [@27:43] - Rustdoc search
    • Whitespace as path separator
    • Search for slices and arrays
  • [@30:58] - Cargo will bail if build script uses cargo:: (actually in 1.73)
  • [@34:13] - Cargo if workspace uses old resolver
  • [@35:12] - cargo-add will better preserve Cargo.toml
  • [@36:11] - rustfmt let-else
  • [@37:49] - cargo -Zscript

[@41:05] - Rust 1.72.1

[@43:37] - Rust 1.73.0

• [@43:45] - Cleaner panic messages
• [@46:58] - Thread local initialization
• [@51:12] - Stabilized APIs
  • {integer}::next_multiple_of
• [@54:53] - Changelog deep-dive
  • [@55:00] - Unconditional recursion in drop
  • [@56:04] - Write Rust’s version into .comment section
    • Embed dependency versions into binary with cargo-sbom
  • [@58:30] - I/O traits for Arc<File>
  • [@59:34] - Make cargo --help easier to browse
  • [@1:03:01] - Merge io::Sink into io::Empty
  • [@1:05:11] - impl SliceIndex<str> for (Bound<usize>, Bound<usize>)

Credits

Intro Theme: Aerocity

Audio Editing: Aerocity

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel