If Let L Statements and What You Shouldn't Let Us Use Them

Jon and Ben discuss the highlights of the 1.65, 1.66, and 1.67 releases of Rust.

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Timestamps & referenced resources

[@01:11] - Rust 1.65

• [@01:28] - Generic Associated Types
  • More detailed blog post
• [@06:48] - let-else statements
  • if_chain crate
• [@16:56] - break from labeled blocks
• [@19:21] - Splitting Linux debuginfo
• [@20:44] - Stabilized APIs
  • std::backtrace::Backtrace
• [@22:41] - RLS deprecation
• [@23:19] - Changelog deep-dive
  • [@23:30] - Cargo queue reordering
    • Benchmarking results
  • [@24:54] - Niches in data-filled enums
  • [@27:23] - poll_fn and Unpin
  • [@28:05] - Too many personalities
  • [@29:20] - uninit integers are UB
    • Working Group discussion
  • [@33:23] - Uplift let_underscore lint
  • [@35:13] - #[non_exhaustive] on enum variants

[@36:27] - Rust 1.66.0

• [@36:40] - Explicit discriminants on enums with fields
  • Dark and forbidden secrets
  • RFC
• [@40:05] - core::hint::black_box
  • Tracking issue discussion
• [@46:34] - cargo remove
• [@46:52] - Stabilized APIs
  • Mixed integer operations
  • BTreeMap/Set first/last operations
  • std::os::fd
• [@50:51] - Changelog deep-dive
  • [@51:10] - Cargo publish changes
  • [@53:33] - Don’t link to libresolv or libiconv on Darwin
  • [@54:41] - sym in asm
  • [@55:18] - Soundness fix for impl Trait
  • [@57:27] - Allow transmutes across lifetimes
  • [@57:45] - Unicode 15
  • [@58:24] - for loops over Option and Result

[@1:00:38] - Rust 1.66.1

Security advisory.

Affects primarily users with insteadOf in their git config. Prefer pushInsteadOf instead.

You may also be interested in:

• Rustup 1.25.2

[@1:02:41] - Rust 1.67

• [@1:02:45] - #[must_use] on async fn
• [@1:04:07] - sync::mpsc updated
  • Long-standing mpsc panic
  • The PR
  • crossbeam crate
    • CachePadded
    • AtomicCell
• [@1:07:52] - Stabilized APIs
  • NonZero*::BITS
• [@1:08:38] - Changelog deep-dive
  • [@1:08:45] - Ratio-aware decompression limit
    • Original CVE
    • Original fix
  • [@1:10:40] - Ordering of array fields
  • [@1:13:08] - Compilation targets
    • Sony PlayStation 1 target
    • Remove linuxkernel targets
    • Target configuration
    • x86_64-unknown-none
  • [@1:14:45] - Dataflow-based MIR constant propagation
  • [@1:15:37] - The drop order twist
    • The effect on let-chains
    • let-chains tracking issue
  • [@1:20:48] - Inconsistent rounding of 0.5
  • [@1:23:24] - Android NDK update in 1.68
  • [@1:23:54] - Help test cargo’s HTTP protocol

Credits

Intro Theme: Aerocity

Audio Editing: Aerocity

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel