Who contributed to Rust on June 13, 2026?

5 developers shipped this update, including heiher, RalfJung, flip1995, A4-Tacks, and itang06.

What were the notable Rust updates?

Mask CRC intrinsic inputs to match LoongArch hardware semantics, Rollup merge of #157672 - amandasystems:region-inference-initialisation, r=davidtwco, and miri subtree update.

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The Wire · Showcase

LOONGARCH CRC FIX LANDS AS RUST CORE ABSORBS SUBTREE UPDATES

By RepoJournal · Filed 06:04 UTC on June 13, 2026 · About Rust

5 people shipped this

heiher @heiher 1 cited

RalfJung @RalfJung 1 cited

flip1995 @flip1995 1 cited

A4-Tacks @A4-Tacks 1 cited

itang06 @itang06 1 cited

Miri fixed a critical intrinsic handling bug on LoongArch that was causing panics, while the compiler absorbed routine subtree syncs and powerpc64 gained a second ABI target.

The most significant change hit the interpreter: Miri was forwarding full-width values to CRC intrinsic shims when LoongArch hardware only consumes the low 8/16/32 bits, causing panics on sign-extended inputs [1]. The fix masks off unused high bits before calling compute_crc32, making the shim match actual hardware behavior. Meanwhile, rustc merged a region inference refactor that simplifies initialization logic in the type checker [2], routine subtree pulls for Miri [3] and Clippy [4] landed cleanly, and the compiler now supports powerpc64-unknown-linux-gnuelfv2, a new target using the ELFv2 ABI instead of the legacy ELFv1 [5]. Over in rust-analyzer, the inline variable assist now works correctly inside macros [6], the extract_module handler completed its migration to the new SyntaxEditor abstraction [7], and the test suite shed unnecessary feature flags now that bindings_after_at, if_let_guard, and trait_upcasting are stable [8].

Action items

→ Review Miri CRC fix if you maintain LoongArch code or cross-platform intrinsics rust-lang/miri [plan]
→ Test powerpc64-unknown-linux-gnuelfv2 target if shipping to ppc64le distributions rust-lang/rust [plan]
→ Update to latest rust-analyzer for macro inline variable support rust-lang/rust-analyzer [monitor]

References

[1] Mask CRC intrinsic inputs to match LoongArch hardware semantics ↗ rust-lang/miri
[2] Rollup merge of #157672 - amandasystems:region-inference-initialisation, r=davidtwco rust-lang/rust
[3] miri subtree update ↗ rust-lang/rust
[4] Clippy subtree update ↗ rust-lang/rust
[5] Rollup merge of #144220 - Gelbpunkt:powerpc64-unknown-linux-gnuelfv2, r=davidtwco rust-lang/rust
[6] fix: supports inline variable in macro ↗ rust-lang/rust-analyzer
[7] internal: migrate extract_module to SyntaxEditor ↗ rust-lang/rust-analyzer
[8] Remove unnecessary feature flags from tests rust-lang/rust-analyzer

Quick answers

What shipped in Rust on June 13, 2026?: Miri fixed a critical intrinsic handling bug on LoongArch that was causing panics, while the compiler absorbed routine subtree syncs and powerpc64 gained a second ABI target. In total, 99 commits, 23 pull requests, and 1 releases landed.
Who contributed to Rust on June 13, 2026?: 5 developers shipped this update, including heiher, RalfJung, flip1995, A4-Tacks, and itang06.
What were the notable Rust updates?: Mask CRC intrinsic inputs to match LoongArch hardware semantics, Rollup merge of #157672 - amandasystems:region-inference-initialisation, r=davidtwco, and miri subtree update.

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