Rollup of 17 pull requests by JonathanBrouwer · Pull Request #158395 · rust-lang/rust

JonathanBrouwer · 2026-06-25T10:19:32Z

Successful merges:

Add arg splat experiment initial tuple impl #153697 (Add arg splat experiment initial tuple impl)
export symbols: support macos/windows(32/64) #155535 (export symbols: support macos/windows(32/64))
codegen_ssa: multiply scalable vec size by vscale #158253 (codegen_ssa: multiply scalable vec size by vscale)
Fix bug when rustdoc "go to only result" setting is not working as expected" #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected")
Use transmute_neo in assume_init #158345 (Use transmute_neo in assume_init)
std: abort when resume_unwind is called inside the panic hook #158369 (std: abort when resume_unwind is called inside the panic hook)
disallow tail calling extern "rust-call" functions #158374 (disallow tail calling extern "rust-call" functions)
Revert "rebuild LLVM when bootstrap.toml config changes" #158380 (Revert "rebuild LLVM when bootstrap.toml config changes")
Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait)
autodiff: stop always needing an alloca #157181 (autodiff: stop always needing an alloca)
autodiff - typtree cleanups #158278 (autodiff - typtree cleanups)
doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag)
Make normalization in a test case resilient to dist compilation #158318 (Make normalization in a test case resilient to dist compilation)
Reorganize tests/ui/issues [14/N] #158338 (Reorganize tests/ui/issues [14/N])
Include Item::const_stability info in rustdoc JSON. #158343 (Include Item::const_stability info in rustdoc JSON.)
Fixup the refactoring errors in #156246 #158355 (Fixup the refactoring errors in Introduce a RerunNonErased error type mirroring NoSolution, to better track when we're bailing #156246)
Fix: auto trait, const trait bound #158390 (Fix: auto trait, const trait bound)

…impl Send + dyn Trait Add a regression test covering the case where a type uses PhantomData<*mut ()> to opt out of Sync, restores Send via an unsafe impl, and is then captured across an .await point with a trait object type parameter (Box<dyn Trait>). The compiler currently erases lifetimes in MIR coroutine witnesses, losing the 'static bound needed to apply the unsafe impl Send. The test verifies this is fixed by -Zhigher-ranked-assumptions and documents the PhantomData<Cell<()>> workaround as a comparison. See the PR description for links to the relevant issues. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

There will still be one for things that aren't just scalars or scalar pairs.

Co-authored-by: Jesus Checa <101630491+jchecahi@users.noreply.github.com>

When emitting a `memcpy` for a scalable vector, the size computed by rustc (`num_vectors * element_count * element_ty`), since rust-lang#157915, needs to be multiplied by `vscale`.

And remove redundant const fn

- const, async, and unsafe functions - const generics, complex types, and where clauses (including impl Tuple)

…pected"

…ity.md The sentence in `src/doc/unstable-book/src/compiler-flags/default-visibility.md` contained the misspelling "earier" where "earlier" was meant. ``` -shared objects earier in the load order. +shared objects earlier in the load order. ``` This is detected by the project's typos configuration; `./x test tidy --extra-checks=spellcheck` would flag it on the next run. Signed-off-by: Dodothereal <129273127+Dodothereal@users.noreply.github.com>

The new normalization regex is taken from many existing test cases, see: https://github.com/search?q=repo%3Arust-lang%2Frust+%2Fthread+%27rustc%27%5C.%5C*panicked%2F&type=code which includes files such as `tests/ui/treat-err-as-bug/span_delayed_bug.rs` or `tests/ui/treat-err-as-bug/err.rs`

This reverts commit 48e7c28.

JonathanBrouwer · 2026-06-25T10:19:50Z

@bors r+ rollup=never p=5

Trying commonly failed jobs
@bors try jobs=dist-various-1,test-various,x86_64-gnu-aux,x86_64-gnu-llvm-21-3,x86_64-msvc-1,aarch64-apple,x86_64-mingw-1,i686-msvc-2

rust-bors · 2026-06-25T10:19:53Z

📌 Commit 24c190c has been approved by JonathanBrouwer

It is now in the queue for this repository.

Rollup of 17 pull requests try-job: dist-various-1 try-job: test-various try-job: x86_64-gnu-aux try-job: x86_64-gnu-llvm-21-3 try-job: x86_64-msvc-1 try-job: aarch64-apple try-job: x86_64-mingw-1 try-job: i686-msvc-2

…uwer Rollup of 17 pull requests Successful merges: - #153697 (Add arg splat experiment initial tuple impl) - #155535 (export symbols: support macos/windows(32/64)) - #158253 (codegen_ssa: multiply scalable vec size by `vscale`) - #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected") - #158345 (Use `transmute_neo` in `assume_init`) - #158369 (std: abort when `resume_unwind` is called inside the panic hook) - #158374 (disallow tail calling extern "rust-call" functions) - #158380 (Revert "rebuild LLVM when `bootstrap.toml` config changes") - #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait) - #157181 (autodiff: stop always needing an alloca) - #158278 (autodiff - typtree cleanups) - #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag) - #158318 (Make normalization in a test case resilient to dist compilation) - #158338 (Reorganize `tests/ui/issues` [14/N]) - #158343 (Include `Item::const_stability` info in rustdoc JSON.) - #158355 (Fixup the refactoring errors in #156246) - #158390 (Fix: auto trait, const trait bound)

rust-bors · 2026-06-25T11:55:44Z

💔 Test for 87fb309 failed: CI. Failed job:

Calculate job matrix (web logs, enhanced plaintext logs)

JonathanBrouwer · 2026-06-25T12:12:24Z

Lmao I think that's the first time I've seen "Calculate job matrix" fail
@bors retry

rust-log-analyzer · 2026-06-25T12:16:19Z

A job failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

  TOOLSTATE_REPO_ACCESS_TOKEN: 
##[endgroup]
    Updating crates.io index
error: failed to get `simd-adler32` as a dependency of package `miniz_oxide v0.8.8`
    ... which satisfies dependency `miniz_oxide = "^0.8.5"` of package `flate2 v1.1.9`
    ... which satisfies dependency `flate2 = "^1.1.9"` of package `citool v0.1.0 (/home/runner/work/rust/rust/src/ci/citool)`

Caused by:
  failed to load source for dependency `simd-adler32`

Caused by:

rust-bors · 2026-06-25T12:33:23Z

⌛ Testing commit 24c190c with merge db96da2...

Workflow: https://github.com/rust-lang/rust/actions/runs/28170364014

…uwer Rollup of 17 pull requests Successful merges: - #153697 (Add arg splat experiment initial tuple impl) - #155535 (export symbols: support macos/windows(32/64)) - #158253 (codegen_ssa: multiply scalable vec size by `vscale`) - #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected") - #158345 (Use `transmute_neo` in `assume_init`) - #158369 (std: abort when `resume_unwind` is called inside the panic hook) - #158374 (disallow tail calling extern "rust-call" functions) - #158380 (Revert "rebuild LLVM when `bootstrap.toml` config changes") - #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait) - #157181 (autodiff: stop always needing an alloca) - #158278 (autodiff - typtree cleanups) - #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag) - #158318 (Make normalization in a test case resilient to dist compilation) - #158338 (Reorganize `tests/ui/issues` [14/N]) - #158343 (Include `Item::const_stability` info in rustdoc JSON.) - #158355 (Fixup the refactoring errors in #156246) - #158390 (Fix: auto trait, const trait bound)

JonathanBrouwer · 2026-06-25T12:34:50Z

@bors yield

rust-bors · 2026-06-25T12:34:54Z

Auto build was cancelled. Cancelled workflows:

https://github.com/rust-lang/rust/actions/runs/28170364014

The next pull request likely to be tested is #156742.

rust-bors · 2026-06-25T12:38:22Z

⌛ Testing commit 24c190c with merge 448dae4...

Workflow: https://github.com/rust-lang/rust/actions/runs/28170642188

…uwer Rollup of 17 pull requests Successful merges: - #153697 (Add arg splat experiment initial tuple impl) - #155535 (export symbols: support macos/windows(32/64)) - #158253 (codegen_ssa: multiply scalable vec size by `vscale`) - #158308 (Fix bug when rustdoc "go to only result" setting is not working as expected") - #158345 (Use `transmute_neo` in `assume_init`) - #158369 (std: abort when `resume_unwind` is called inside the panic hook) - #158374 (disallow tail calling extern "rust-call" functions) - #158380 (Revert "rebuild LLVM when `bootstrap.toml` config changes") - #154398 (Add test for async Send with PhantomData<*mut ()> + unsafe impl Send + dyn Trait) - #157181 (autodiff: stop always needing an alloca) - #158278 (autodiff - typtree cleanups) - #158311 (doc(unstable-book): fix typo "earier" -> "earlier" in default-visibility flag) - #158318 (Make normalization in a test case resilient to dist compilation) - #158338 (Reorganize `tests/ui/issues` [14/N]) - #158343 (Include `Item::const_stability` info in rustdoc JSON.) - #158355 (Fixup the refactoring errors in #156246) - #158390 (Fix: auto trait, const trait bound)

JonathanBrouwer · 2026-06-25T12:38:57Z

@bors retry
@bors treeclosed=6 so it doesn't keep running the rollup

rust-bors · 2026-06-25T12:39:00Z

❗ You can only retry pull requests that are approved and have a previously failed auto build.

Hint: There is currently a pending auto build on this PR. To cancel it, run @bors cancel.

rust-bors · 2026-06-25T12:39:00Z

Tree closed for PRs with priority less than 6.

JonathanBrouwer · 2026-06-25T12:39:29Z

@bors yield

rust-bors · 2026-06-25T12:39:33Z

Auto build was cancelled. Cancelled workflows:

https://github.com/rust-lang/rust/actions/runs/28170642188

The next pull request likely to be tested is #156742.

rust-bors · 2026-06-25T13:47:58Z

☀️ Try build successful (CI)
Build commit: b400d51 (b400d518a06007f5c9d434a53d16ec4deaf2f699)
Base parent: 73100ee (73100eefe2afb831c4964f579c95beeb27b86e28)

sandersaares and others added 30 commits May 11, 2026 15:37

autodiff: stop always needing an alloca

2f10fd2

There will still be one for things that aren't just scalars or scalar pairs.

export symbols: support macos/windows(32/64)

ca10995

Co-authored-by: Jesus Checa <101630491+jchecahi@users.noreply.github.com>

codegen_ssa: multiply scalable vec size by vscale

cfc4211

When emitting a `memcpy` for a scalable vector, the size computed by rustc (`num_vectors * element_count * element_ty`), since rust-lang#157915, needs to be multiplied by `vscale`.

move typetree logic into a new file

b9d55eb

Limit splat AST and FnDecl to 255 args

e4bb0e1

And remove redundant const fn

Impl HIR FnSig for #[splat]

ade9fa3

Impl HIR typeck for #[splat]

cfd9e33

Remove a leftover direct call to fn_ctxt.label_generic_mismatches

ad77eda

Fix ICE in label_fn_like when splatted arg index is out of bounds

ac47723

Impl MIR lowering side-tables for #[splat]

c29f2db

Impl actual MIR lowering for #[splat]

4cb4e0c

Impl TypeInfo for splat

6c7c69c

Add UI tests for #[splat] unhappy path, generics, fn colors

c3593c1

- const, async, and unsafe functions - const generics, complex types, and where clauses (including impl Tuple)

Add failing test for #[splat] with dyn AsRef<T> where T: Tuple

28b3d02

Add splat UI tests for 255 splatted arg limit

b23bbed

UI test arg diffs greater than u8::MAX

9b44c23

Fix bug when rustdoc "go to only result" setting is not working as ex…

2262b8e

…pected"

simplify call chains, fix assertions

d9038db

move batch

6f9f78c

bless batch

19f2cef

Include Item::const_stability info in rustdoc JSON.

f8973b7

fixup the refactoring errors in 156246

2625886

Update panicking.rs

b75fb84

disallow tail calling extern "rust-call" functions

4594bcf

Revert "rebuild LLVM when bootstrap.toml config changes"

0083485

This reverts commit 48e7c28.

Use transmute_neo in assume_init

4eb7436

Fix: auto trait, const trait bound

915b021

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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 Jun 25, 2026

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