What's New in Rust 1.76, 1.77, and 1.78

Rustacean Station

Jon and Ben discuss the highlights of the 1.76, 1.77, and 1.78 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

[@00:34] - Rust 1.76

• [@01:18] - ABI compatibility updates
  • The updated ABI section
  • An interesting article on ABIs in Swift vs Rust
• [@08:53] - Type names from references
  • type_name
  • type_name_of_val
• [@10:35] - Stabilized APIs
  • [@10:56] - Result::inspect
  • [@13:53] - Arc::unwrap_or_clone
  • [@15:25] - std::hash::DefaultHasher
  • [@18:01] - ptr::addr_eq
• [@21:30] - Changelog deep-dive
  • [@21:33] - Resize/hide rustdoc bars

[@22:40] - Rust 1.77

• [@22:51] - C-string literals
  • std::ffi::CStr
• [@28:20] - Support for recursion in async fn
• [@31:43] - offset_of!
• [@36:32] - Enable strip in release profiles by default
• [@39:35] - Stabilized APIs
  • [@39:36] - core::net
  • [@40:59] - f64::round_ties_even
  • [@42:05] - Mutex::clear_poison
  • [@43:43] - File::create_new
    • OpenOptions
• [@46:15] - Changelog deep-dive
  • [@46:46] - Lint on references to static mut
    • SyncUnsafeCell
  • [@50:05] - Undeprecate unstable_features lint
  • [@51:37] - Deny braced macro invocation in let-else
    • Details from dtolnay comment
  • [@55:45] - cargo:: in build scripts
  • [@56:20] - Standardized package ID spec in Cargo
  • [@57:36] - slice::first_chunk

[@59:55] - Rust 1.77.1

Stripping debug info in release builds broke Windows.

[@1:00:58] - Rust 1.77.2

Fixes CVE-2024-24576.

Detailed advisory, fix, and current logic.

[@1:04:54] - Rust 1.78

• [@1:07:55] - Diagnostic attributes
  • #[diagnostic] documentation
• [@1:13:13] - Asserting unsafe preconditions
  • Implementation PR
• [@1:19:56] - Deterministic realignment
• [@1:23:24] - Stabilized APIs
  • [@1:23:33] - impl Read for &Stdin
  • [@1:24:03] - Relax bounds on Error trait implementations
• [@1:25:40] - Compatibility notes
  • [@1:25:40] - Windows requirement bump
    • Replace pthread RwLock
    • Slim reader/writer locks
  • [@1:29:25] - LLVM 18 brings *128 ABI change
• [@1:32:04] - Changelog deep-dive
  • [@1:32:04] - Make non-PartialEq-typed consts as patterns a hard error
  • [@1:34:59] - Suggest moving definition if non-found macro_rules! is defined later
  • [@1:36:08] - Stabilize v4 of Cargo lockfile
  • [@1:37:36] - cargo update highlights stale dependencies
  • [@1:38:23] - Deprecate non-extension .cargo/config files
  • [@1:39:19] - Clippy lint assigning_clones
  • [@1:40:49] - Clippy lint incompatible_msrv
  • [@1:42:22] - cargo new stopped commenting in Cargo.toml

Credits

Intro Theme: Aerocity

Audio Editing: Aerocity

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel