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Rustc pull update#2845

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tshepang merged 13 commits intomainfrom
rustc-pull
Apr 22, 2026
Merged

Rustc pull update#2845
tshepang merged 13 commits intomainfrom
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Latest update from rustc.

bors and others added 13 commits April 21, 2026 05:35
… r=saethlin

Fix performance regression introduced in #142531 by excluding `Storage{Live,Dead}` from CGU size estimation



Fix performance regression introduced in rust-lang/rust#142531 ([rust-timer comment](rust-lang/rust#142531 (comment))) by excluding `Storage{Live,Dead}` from CGU size estimation.

Also, avoid unneeded work for storage removal in non-opt builds in CopyProp and GVN
by allocating local sets for the storage accounting only when `tcx.sess.emit_lifetime_markers()`. 

r? saethlin
Incremental tests that would have used the `check-pass`, `build-pass`, or
`run-pass` directives should instead use a revision name starting with
`cpass`/`bpass`/`rpass` as appropriate.
Forbid `check-pass`/`build-pass`/`run-pass` directives in incremental tests

- Follow-up to rust-lang/rust#155474
---

This PR forbids the use of `//@ check-pass`, `//@ build-pass`, and `//@ run-pass` directives in incremental tests. Tests that would have used those directives should use a revision name beginning with `cpass`/`bpass`/`rpass` instead.

(The `*-fail` directives are already forbidden in incremental tests.)

Existing incremental tests that used the `check-pass` and `build-pass` directives have been migrated. To allow migration of the check-pass tests, this PR also adds support for revision names beginning with `cpass`. No incremental tests were using `run-pass`.

---

Several of the migrated `build-pass` tests have a FIXME indicating that they could potentially be migrated to `check-pass` instead. This PR does not perform that migration.

In the future, I intend to do more cleanup of how compiletest handles pass/fail expectations, but I didn't want to cram too much into one PR.

r? jieyouxu
Add missing `dyn` keyword to `trait_alias` page of the Unstable Book

There seemed to be a small typo in the Rust Unstable Book page for the `trait_alias` feature, where a variable is declared as `&Bar` for a trait `Bar`, rather than `&dyn Bar`.
test cleanups for `ui/derives` and `ui/deriving`

The eventual goal is for `ui/deriving` to be merged into `ui/derives` entirely. This PR focuses on the `issue-*.rs` tests in `deriving` and a few other no-longer-useful tests.
r? @Kivooeo
…itions, r=oli-obk

Fix ICE for inherited const conditions on const closures

Synchronize `evaluate_host_effect_for_fn_goal` with the behavior of `extract_fn_def_from_const_callable` in new solver.

Closes rust-lang/rust#153861 .
std: Update support for `wasm32-wasip3`

This commit performs some minor update within the standard library for the `wasm32-wasip3` target. This target is a tier 3 target currently due to the WASIp3 specification not being officially released. This commit adds a dependency from the standard library on the `wasip3` crate in the same manner as the `wasip1` and `wasip2` crates that it already depends on. The use-sites, for randomness and environment variables, are then updated to handle the wasip2/wasip3 multiplexing.
c-variadic: tweak `std` docs

tracking issue: rust-lang/rust#44930

In preparation of a rename of `arg` to `next_arg`

cc @workingjubilee
r? tgross35
…ngfei2009

Remove a bunch of unnecessary explicit lifetimes from the ast validator

Noticed while fiddling with error reporting. None of the lifetimes were ever used for anything
Rollup of 7 pull requests

Successful merges:

 - rust-lang/rust#155589 (Forbid `check-pass`/`build-pass`/`run-pass` directives in incremental tests)
 - rust-lang/rust#155610 (Add missing `dyn` keyword to `trait_alias` page of the Unstable Book)
 - rust-lang/rust#155615 (test cleanups for `ui/derives` and `ui/deriving`)
 - rust-lang/rust#154874 (Fix ICE for inherited const conditions on const closures)
 - rust-lang/rust#155605 (std: Update support for `wasm32-wasip3`)
 - rust-lang/rust#155613 (c-variadic: tweak `std` docs)
 - rust-lang/rust#155619 (Remove a bunch of unnecessary explicit lifetimes from the ast validator)
This updates the rust-version file to cf1817bc6ecd2d14ca492247c804bad31948dd56.
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rustbot commented Apr 22, 2026

Thanks for the PR. If you have write access, feel free to merge this PR if it does not need reviews. You can request a review using r? rustc-dev-guide or r? <username>.

@rustbot rustbot added the S-waiting-on-review Status: this PR is waiting for a reviewer to verify its content label Apr 22, 2026
@tshepang tshepang merged commit 613e260 into main Apr 22, 2026
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@rustbot rustbot removed the S-waiting-on-review Status: this PR is waiting for a reviewer to verify its content label Apr 22, 2026
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5 participants