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

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