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wire 2026-09-07
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libc hardens config, rust-analyzer ships 2026-09-07

By RepoJournal · Filed · About Rust

tgross35 xjtu-ctgg Kobzol kristof-mattei github-actions[bot] ChayimFriedman2 bors
11 people shipped this
tgross35 @tgross35 3 cited xjtu-ctgg @xjtu-ctgg 1 cited Kobzol @Kobzol 1 cited kristof-mattei @kristof-mattei 1 cited github-actions[bot] @github-actions[bot] 1 cited ChayimFriedman2 @ChayimFriedman2 1 cited bors @bors xtqqczze @xtqqczze JonathanBrouwer @JonathanBrouwer camsteffen @camsteffen Lukas Wirth @Veykril

libc added assertions that its target configuration is coherent, and rust-analyzer released a new nightly with completion improvements.

rust-lang/libc is tightening its build configuration. Previously, settings like `freebsd12` could be applied on non-FreeBSD targets; the project now asserts that such configurations make sense [1]. Companion work [2] switches the config to an enum for type safety, preparing for better checks. If you build libc from source or vendor it, expect stricter validation at build time.

On Linux, libc moved more `socket.h` definitions to `src/new` as part of ongoing cleanup [3], and fixed unusable riscv32 GNU syscall numbers: RISC-V 32-bit only provides time64 variants for those syscalls, so the numbers now use the time64 versions and the unavailable time32 names were removed [4]. This is a breaking change for any code referencing the old riscv32 syscall constants.

rust-analyzer shipped its 2026-09-07 release (`v0.3.3041`) [5]. The release notes list a new feature: completion label details now render const values [5]. A separate fix corrects parsing of `self::` in function parameter lists, resolving an issue where standalone `self::` was mishandled [6]. The CI naming convention in rust-lang/rust now requires every job to start with either `dist-` or `test-`, making jobs easier to search in the GitHub UI [7]. The official Docker images updated to Rust 1.98.1 [8].

Action items

References

  1. [1] build: Assert that cfg makes sense ↗ rust-lang/libc
  2. [2] build: Switch to an enum for config ↗ rust-lang/libc
  3. [3] linux: Move more `socket.h` definitions to `src/new` ↗ rust-lang/libc
  4. [4] linux: fix unusable riscv32 GNU syscall numbers ↗ rust-lang/libc
  5. [5] 2026-09-07 ↗ rust-lang/rust-analyzer
  6. [6] fix: Fix parsing of `self::` in fn param list ↗ rust-lang/rust-analyzer
  7. [7] Implement test- naming convention for CI jobs ↗ rust-lang/rust
  8. [8] chore: Update Rust to 1.98.1 ↗ rust-lang/docker-rust

$ ls rust-lang/reviews/ # the step-back reads

the week in review Closures become MaybeDangling, AArch64 SVE lands the month in review Never type and custom allocators stabilize while rustc refactors repeat
Topics: Rust Full archive →

Quick answers

What shipped in Rust on September 7, 2026?
libc added assertions that its target configuration is coherent, and rust-analyzer released a new nightly with completion improvements. In total, 85 commits, 20 pull requests, and 2 releases landed.
Who contributed to Rust on September 7, 2026?
11 developers shipped this update, including bors, tgross35, xtqqczze, xjtu-ctgg, Kobzol, JonathanBrouwer, camsteffen, and kristof-mattei, and 3 more.
What were the notable Rust updates?
build: Assert that cfg makes sense, build: Switch to an enum for config, and linux: Move more `socket.h` definitions to `src/new`.
♥

$ log @rust-lang --recent

Closures become MaybeDangling, AArch64 SVE lands in inline asm 123 shipped rustup adds --check flag and toolchain pin, libc gains path constants 86 shipped Rust fixes time-traveling UB, rolls back enum Debug change 188 shipped compiler-builtins adds wcslen for LLVM 23, crates.io streamlines owner handling 86 shipped

$ log --all # elsewhere on the wire

Meta React Native adds Stable API guards to renderer attributed string FastAPI & Pydantic Pydantic fixes Mypy plugin crash, tightens datetime constraints

$ ls showcases/

Rails Django Laravel Node.js Go Vercel Vue.js Kubernetes HashiCorp Arch Linux Linux Anthropic

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