Rollup of 4 pull requests #151594

matthiaskrgr · 2026-01-24T14:35:11Z

Successful merges:

const blocks as a mod item #149174 (const blocks as a mod item)
THIR patterns: Explicitly distinguish &pin from plain &/&mut #151282 (THIR patterns: Explicitly distinguish &pin from plain &/&mut)
miri subtree update #151593 (miri subtree update)
Do not emit errors on non-metaitem diagnostic attr input #151516 (Do not emit errors on non-metaitem diagnostic attr input)

This updates the rust-version file to 63f4513.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@63f4513 Filtered ref: rust-lang/miri@98aa894 Upstream diff: rust-lang/rust@b6fdaf2...63f4513 This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

This updates the rust-version file to d276646.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@d276646 Filtered ref: rust-lang/miri@e200be9 Upstream diff: rust-lang/rust@63f4513...d276646 This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

Compile-time variant of shim_sig_arg

This updates the rust-version file to d10ac47.

Pull recent changes from https://github.com/rust-lang/rust via Josh. Upstream ref: rust-lang/rust@d10ac47 Filtered ref: rust-lang/miri@79d95eb Upstream diff: rust-lang/rust@d276646...d10ac47 This merge was created using https://github.com/rust-lang/josh-sync.

Automatic Rustup

…losedir Add test for libc opendir and closedir

update .gitignore to ignore zed files

Unify readdir across Unix targets and add test

readdir: also emit the special directory entries . and ..

windows shims: throw unsupported error for DuplicateHandle on pseudo handle

…e,ytmimi `const` blocks as a `mod` item Tracking issue: rust-lang#149226 This adds support for writing `const { ... }` as an item in a module. In the current implementation, this is a unique AST item that gets lowered to `const _: () = const { ... };` in HIR. rustfmt support included. TODO: - `pub const { ... }` does not make sense (see rust-lang#147136). Reject it. Should this be rejected by the parser or smth? - Improve diagnostics (preferably they should not mention the fake `_` ident).

THIR patterns: Explicitly distinguish `&pin` from plain `&`/`&mut` Currently, `thir::PatKind::Deref` is used for ordinary `&`/`&mut` patterns, and also for `&pin const` and `&pin mut` patterns under `feature(pin_ergonomics)`. The only way to distinguish between them is by inspecting the `Ty` attached to the pattern node. That's non-obvious, making it easy to miss, and is also a bit confusing to read when it does occur. This PR therefore adds an explicit `pin: hir::Pinnedness` field to `thir::PatKind::Deref`, to explicitly distinguish pin-deref nodes from ordinary builtin-deref nodes. (I'm not deeply familiar with the future of pin-patterns, so I'm not sure whether that information is best carried as a field or as a separate `PatKind`, but I think this approach is at least an improvement over the status quo.) r? Nadrieril (or compiler)

@ghost

miri subtree update Subtree update of `miri` to rust-lang/miri@d4afb41. Created using https://github.com/rust-lang/josh-sync. r? @ghost

@JonathanBrouwer

…nn,jonathanbrouwer Do not emit errors on non-metaitem diagnostic attr input This unblocks porting over diagnostic attributes by properly addressing rust-lang#151056 (comment) r? @JonathanBrouwer

matthiaskrgr · 2026-01-24T14:35:39Z

@bors r+ rollup=never p=5

rust-bors · 2026-01-24T14:35:43Z

📌 Commit ac8e7f2 has been approved by matthiaskrgr

It is now in the queue for this repository.

rust-bors · 2026-01-24T18:06:11Z

☀️ Test successful - CI
Approved by: matthiaskrgr
Duration: 3h 13m 21s
Pushing 021fc25 to main...

rust-timer · 2026-01-24T18:07:21Z

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#149174	`const` blocks as a `mod` item	`1d09b1dc7f381509b4a07e9e6ff20bccfc0f6fce` (link)
#151282	THIR patterns: Explicitly distinguish `&pin` from plain `&`…	`6ff26de686ad88a27c74edb8b4267d8b7fc2820b` (link)
#151516	Do not emit errors on non-metaitem diagnostic attr input	`5d666fd7ac534707cf58e74050a95a5674a1eb23` (link)
#151593	miri subtree update	`9fbb9471960a2a3e83d890d03c996f1593ad5635` (link)

previous master: a18e6d9d14

In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA

github-actions · 2026-01-24T18:09:28Z

What is this?

This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing a18e6d9 (parent) -> 021fc25 (this PR)

Test differences

Show 112 test diffs

Stage 1

[ui] tests/ui/consts/const-block-item-macro-codegen.rs: pass -> [missing] (J1)
[ui] tests/ui/consts/const-block-item.rs: pass -> [missing] (J1)
[ui] tests/ui/consts/const-block-items/assert-fail.rs: [missing] -> pass (J1)
[ui] tests/ui/consts/const-block-items/assert-pass.rs: [missing] -> pass (J1)
[ui] tests/ui/consts/const-block-items/hir.rs: [missing] -> pass (J1)
[ui] tests/ui/consts/const-block-items/typecheck.rs: [missing] -> pass (J1)
[ui] tests/ui/consts/const-item-with-block-body/macro-codegen.rs: [missing] -> pass (J1)
[ui] tests/ui/consts/const-item-with-block-body/static.rs: [missing] -> pass (J1)
[ui] tests/ui/feature-gates/feature-gate-const-block-items.rs: [missing] -> pass (J1)
[ui] tests/ui/parser/const-block-items/attrs.rs: [missing] -> pass (J1)
[ui] tests/ui/parser/const-block-items/inner-attr.rs: [missing] -> pass (J1)
[ui] tests/ui/parser/const-block-items/macro-item.rs: [missing] -> pass (J1)
[ui] tests/ui/parser/const-block-items/macro-stmt.rs: [missing] -> pass (J1)
[ui] tests/ui/parser/const-block-items/mod-in-fn.rs: [missing] -> pass (J1)
[ui] tests/ui/parser/const-block-items/pub.rs: [missing] -> pass (J1)
[ui] tests/ui/parser/const-block-items/unsafe.rs: [missing] -> pass (J1)
[ui] tests/ui/pin-ergonomics/user-type-projection.rs: [missing] -> pass (J1)

Stage 2

[ui] tests/ui/consts/const-block-item-macro-codegen.rs: pass -> [missing] (J0)
[ui] tests/ui/consts/const-block-item.rs: pass -> [missing] (J0)
[ui] tests/ui/consts/const-block-items/assert-fail.rs: [missing] -> pass (J0)
[ui] tests/ui/consts/const-block-items/assert-pass.rs: [missing] -> pass (J0)
[ui] tests/ui/consts/const-block-items/hir.rs: [missing] -> pass (J0)
[ui] tests/ui/consts/const-block-items/typecheck.rs: [missing] -> pass (J0)
[ui] tests/ui/consts/const-item-with-block-body/macro-codegen.rs: [missing] -> pass (J0)
[ui] tests/ui/consts/const-item-with-block-body/static.rs: [missing] -> pass (J0)
[ui] tests/ui/feature-gates/feature-gate-const-block-items.rs: [missing] -> pass (J0)
[ui] tests/ui/parser/const-block-items/attrs.rs: [missing] -> pass (J0)
[ui] tests/ui/parser/const-block-items/inner-attr.rs: [missing] -> pass (J0)
[ui] tests/ui/parser/const-block-items/macro-item.rs: [missing] -> pass (J0)
[ui] tests/ui/parser/const-block-items/macro-stmt.rs: [missing] -> pass (J0)
[ui] tests/ui/parser/const-block-items/mod-in-fn.rs: [missing] -> pass (J0)
[ui] tests/ui/parser/const-block-items/pub.rs: [missing] -> pass (J0)
[ui] tests/ui/parser/const-block-items/unsafe.rs: [missing] -> pass (J0)
[ui] tests/ui/pin-ergonomics/user-type-projection.rs: [missing] -> pass (J0)

Additionally, 78 doctest diffs were found. These are ignored, as they are noisy.

Job group index

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard 021fc25b7a48f6051bee1e1f06c7a277e4de1cc9 --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

dist-aarch64-apple: 8977.8s -> 6437.3s (-28.3%)
pr-check-1: 1521.9s -> 1925.8s (+26.5%)
aarch64-apple: 8283.3s -> 9834.6s (+18.7%)
i686-gnu-nopt-1: 7042.7s -> 8277.5s (+17.5%)
x86_64-gnu-llvm-21-3: 5979.5s -> 6841.4s (+14.4%)
aarch64-gnu-debug: 3935.6s -> 4449.2s (+13.1%)
pr-check-2: 2253.8s -> 2503.5s (+11.1%)
aarch64-gnu-llvm-20-2: 2706.7s -> 3001.5s (+10.9%)
x86_64-rust-for-linux: 2789.6s -> 3093.0s (+10.9%)
i686-msvc-2: 7227.9s -> 7999.2s (+10.7%)

How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

rust-timer · 2026-01-24T18:48:37Z

Finished benchmarking commit (021fc25): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (primary -2.6%, secondary 6.5%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	6.5%	[6.5%, 6.5%]	1
Improvements ✅ (primary)	-2.6%	[-2.6%, -2.6%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-2.6%	[-2.6%, -2.6%]	1

Cycles

Results (primary 0.7%, secondary 3.3%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	0.7%	[0.7%, 0.7%]	1
Regressions ❌ (secondary)	3.3%	[2.6%, 3.9%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.7%	[0.7%, 0.7%]	1

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 469.207s -> 472.296s (0.66%)
Artifact size: 383.51 MiB -> 383.54 MiB (0.01%)

Zalathar and others added 30 commits January 20, 2026 13:41

THIR patterns: Explicitly distinguish &pin from plain &/&mut

566c23d

Prepare for merging from rust-lang/rust

2b0f119

This updates the rust-version file to 63f4513.

fmt

ff5a250

make comment consistent

24e28e7

Merge pull request rust-lang#4820 from rust-lang/rustup-2026-01-20

0aac6d1

Automatic Rustup

Prepare for merging from rust-lang/rust

47f3474

This updates the rust-version file to d276646.

Merge pull request rust-lang#4822 from rust-lang/rustup-2026-01-21

569b4f9

Automatic Rustup

Sugar for const _: () =

8439fda

separate ast item for const block items

61ac562

Audit AllowConstBlockItems

5eb0193

const_block_items: tests

e77b119

const_block_items: do not create an AnonConst

a315d23

Compile-time variant of shim_sig_arg

a378a56

Merge pull request rust-lang#4806 from CraftSpider/comp-sig

b22c2f9

Compile-time variant of shim_sig_arg

Add test for libc opendir and closedir

c84eced

Do not emit errors on non-metaitem diagnostic attr input

215a82c

Prepare for merging from rust-lang/rust

9b30ff4

This updates the rust-version file to d10ac47.

Merge pull request rust-lang#4825 from rust-lang/rustup-2026-01-23

e4e57e5

Automatic Rustup

rustfmt: support const block items

d144915

Merge pull request rust-lang#4824 from Islam-Imad/test-libc-opendir-c…

3159e80

…losedir Add test for libc opendir and closedir

Unify readdir shim across Unix targets and add test

adeb4df

used readdir_r for mac OS

b17a22f

update .gitignore to ignore zed files

fix readdir on freebsd, and minor tweaks

4cd367f

Merge pull request rust-lang#4821 from Islam-Imad/refactor/readdir

24ced66

Unify readdir across Unix targets and add test

error on DuplicateHandle of pseudo handle

3c03d82

readdir: also emit the special directory entries . and ..

1d85118

add test for DuplicateHandle on a pseudo handle

7a937ae

RalfJung and others added 6 commits January 24, 2026 11:19

Merge pull request rust-lang#4829 from RalfJung/readdir-special

1046e2f

readdir: also emit the special directory entries . and ..

Merge pull request rust-lang#4818 from beepster4096/psuedohandling

a3d2e99

windows shims: throw unsupported error for DuplicateHandle on pseudo handle

Rollup merge of rust-lang#151593 - RalfJung:miri, r=RalfJung

9511130

miri subtree update Subtree update of `miri` to rust-lang/miri@d4afb41. Created using https://github.com/rust-lang/josh-sync. r? @ghost

Rollup merge of rust-lang#151516 - mejrs:ignore_nonmeta, r=jdonszelma…

ac8e7f2

…nn,jonathanbrouwer Do not emit errors on non-metaitem diagnostic attr input This unblocks porting over diagnostic attributes by properly addressing rust-lang#151056 (comment) r? @JonathanBrouwer

rust-bors bot added the rollup A PR which is a rollup label Jan 24, 2026

rust-bors bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 24, 2026

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rust-bors bot added merged-by-bors This PR was explicitly merged by bors. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jan 24, 2026

rust-bors bot merged commit 021fc25 into rust-lang:main Jan 24, 2026
12 checks passed

rustbot added this to the 1.95.0 milestone Jan 24, 2026

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Overall result: no relevant changes - no action needed

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