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Reverting file name weird-exprs.rs due to its historical use, recognition in community and references
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Rollup of 11 pull requests
Successful merges:
- rust-lang/rust#143301 (`tests/ui`: A New Order [26/N])
- rust-lang/rust#143519 (Check assoc consts and tys later like assoc fns)
- rust-lang/rust#143554 (slice: Mark `rotate_left`, `rotate_right` unstably const)
- rust-lang/rust#143634 (interpret/allocation: expose init + write_wildcards on a range)
- rust-lang/rust#143685 (Resolve: merge `source_bindings` and `target_bindings` into `bindings`)
- rust-lang/rust#143734 (Refactor resolve resolution bindings)
- rust-lang/rust#143774 (constify `From` and `Into`)
- rust-lang/rust#143785 (Add --compile-time-deps argument for x check)
- rust-lang/rust#143786 (Fix fallback for CI_JOB_NAME)
- rust-lang/rust#143825 (clippy: fix test filtering when TESTNAME is empty)
- rust-lang/rust#143826 (Fix command trace)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix command trace
With the recent developments in centralization of command execution, we somehow broke the traces for command execution. This PR fixes that and add trace to stream command execution as well.
r? ````@Kobzol````
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clippy: fix test filtering when TESTNAME is empty
Fixes https://github.com/rust-lang/rust/issues/143824. Turns out bootstrap was just fine, the TESTNAME logic in clippy was wrong... I still made this a rustc PR as that's where I did all the debugging.
The bootstrap change is not really related, but it's comment-only so not worth a separate PR... adding the `test_args` is also part of what `prepare_cargo_test` would usually do so let's group the code properly.
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Fix fallback for CI_JOB_NAME
If CI_JOB_NAME is not specified, it's supposed to fall back to the image name, which is `$image`, not `$IMAGE`.
Failing to set the correct CI_JOB_NAME causes failures when running `dist-ohos-*` images locally.
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Add --compile-time-deps argument for x check
Together with skipping building C++ code in rustc_llvm for check, this reduces the amount of time it takes to do the x check for rust-analyzer analysis from 12m16s to 3m06s when the bootstrap compiler is already downloaded.
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constify `From` and `Into`
tracking issue rust-lang/rust#143773
r? ``````@fee1-dead``````
I did not mark any impls elsewhere as `const`, those can happen on their own timeframe and don't need to be part of this MVP. But if there are some core ones you think should be in there I'll happily add them, just couldn't think of any
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LorrensP-2158466:refactor-resolve-resolution-bindings, r=petrochenkov
Refactor resolve resolution bindings
This pr does the work asked in https://github.com/rust-lang/rust/pull/142547#issuecomment-3001339385. This part:
> move the `(non)_glob_binding` change
r? ````@petrochenkov````
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Resolve: merge `source_bindings` and `target_bindings` into `bindings`
Attempts to merge the 2 fields `source_bindings` and `target_bindings` of `ImportKind::Single` into 1 field called `bindings`.
r? ````@petrochenkov````
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interpret/allocation: expose init + write_wildcards on a range
Part of https://github.com/rust-lang/miri/pull/4456, so that we can mark down when a foreign access to our memory happened. Should this also move `prepare_for_native_access()` itself into Miri, given that everything there can be implemented on Miri's side?
r? `````@RalfJung`````
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slice: Mark `rotate_left`, `rotate_right` unstably const
Tracking issue rust-lang/rust#143812
- Add the const unstable `const_slice_rotate` feature
- Mark `<[T]>::rotate_left` and `<[T]>::rotate_right` as const unstable
The internal rotate functions use [`<*mut T>::replace`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.replace) and [`ptr::swap_nonoverlapping`](https://doc.rust-lang.org/stable/core/ptr/fn.swap_nonoverlapping.html) which were const-stabilized in 1.88.
Two changes were needed in the `rotate.rs` module to make these functions const:
1. A usage of `cmp::min` was replaced with a local function implementation of [`Ord::min`](https://doc.rust-lang.org/1.88.0/src/core/cmp.rs.html#1048-1053).
2. A `for start in 1..gcd` loop was changed to a while loop with an increment variable.
This needs libs-api approval and cc-ing const-eval.
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Check assoc consts and tys later like assoc fns
This PR
1. checks assoc consts and tys later like assoc fns
2. marks assoc consts appear in poly-trait-ref live
For assoc consts, considering
```rust
#![deny(dead_code)]
trait Tr { // ERROR trait `Tr` is never used
const I: Self;
}
struct Foo; //~ ERROR struct `Foo` is never constructed
impl Tr for Foo {
const I: Self = Foo;
}
fn main() {}
```
Current this will produce unused `I` instead of unused `Tr` and `Foo` ([play](https://play.rust-lang.org/?version=nightly&mode=debug&edition=2024&gist=e0490d4a2d522cb70437b26e514a3d9c)), because `const I: Self = Foo;` will be added into the worklist at first:
```
error: associated constant `I` is never used
--> src/main.rs:4:11
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3 | trait Tr { // ERROR trait `Tr` is never used
| -- associated constant in this trait
4 | const I: Self;
| ^
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note: the lint level is defined here
--> src/main.rs:1:9
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1 | #![deny(dead_code)]
| ^^^^^^^^^
error: could not compile `playground` (bin "playground") due to 1 previous error
```
This also happens to assoc tys, see the [new test](https://github.com/rust-lang/rust/compare/master...mu001999-contrib:rust:dead-code/impl-items?expand=1#diff-bf45fa403934a31c9d610a073ed2603d885e7e81572e8edf38b7f4e08a1f3531)
Fixes rust-lang/rust#126729
r? `````@petrochenkov`````
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`tests/ui`: A New Order [26/N]
> [!NOTE]
>
> Intermediate commits are intended to help review, but will be squashed prior to merge.
Some `tests/ui/` housekeeping, to trim down number of tests directly under `tests/ui/`. Part of rust-lang/rust#133895.
r? ````@tgross35````
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Run `tests/rustdoc-json/attrs/target_features` on all hosts.
Makes it more convenient to test rustdoc on non x86_64. I mainly care about the aarch64 dev-desktops.
This works because rustdoc uses all target features, not just that of the target.
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Rollup of 12 pull requests
Successful merges:
- rust-lang/rust#143776 (std: move NuttX to use arc4random for random number generation)
- rust-lang/rust#143778 (Some const_trait_impl test cleanups)
- rust-lang/rust#143782 (Disambiguate between rustc vs std having debug assertions in `run-make-support` and `run-make` tests)
- rust-lang/rust#143791 (Update sysinfo version to `0.36.0`)
- rust-lang/rust#143796 (Fix ICE for parsed attributes with longer path not handled by CheckAttribute)
- rust-lang/rust#143798 (Remove format short command trait)
- rust-lang/rust#143803 (New tracking issues for const_ops and const_cmp)
- rust-lang/rust#143814 (htmldocck: better error messages for some negative directives)
- rust-lang/rust#143817 (Access `wasi_sdk_path` instead of reading environment variable in bootstrap)
- rust-lang/rust#143822 (./x test miri: fix cleaning the miri_ui directory)
- rust-lang/rust#143823 ([COMPILETEST-UNTANGLE 5/N] Test mode adjustments and other assorted cleanups)
- rust-lang/rust#143841 (Label clippy changes with `T-clippy`)
Failed merges:
- rust-lang/rust#143850 (Compiletest: Simplify {Html,Json}DocCk directive handling)
r? `@ghost`
`@rustbot` modify labels: rollup
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Label clippy changes with `T-clippy`
- Commits {1,2} are just drive-by housekeeping, no functional changes.
- Commit 3 adds an autolabel for `src/tools/clippy` to be labelled with https://github.com/rust-lang/rust/labels/T-clippy.
r? `@apiraino` (or clippy, or anyone really)
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[COMPILETEST-UNTANGLE 5/N] Test mode adjustments and other assorted cleanups
This is part of a patch series to untangle `compiletest` to hopefully nudge it towards being more maintainable.
This PR should contain no functional changes modulo the removed debugger version warning.
- Commit 1: Removes a very outdated debugger version warning.
- Commit 2: Moves `string_enum` out of `common` into `util` module.
- Commit 3: Remove `#[derive(Default)` for `Mode` and `Config`. It is very important for correctness that we *don't* `#[derive(Default)]`, because there are no sensible defaults, so stop pretending there is.
- Commit 4: Rename `Mode` -> `TestMode`, because I would like to introduce a `TestSuite` enum to stop using stringly-typed test suite names where test mode names can be the same as test suite names, and we also have a bunch of other "modes" in compiletest. Make this as unambiguous as possible. A corollary is that now it's more natural to reference via intra-doc links as ``[`TestMode`]``.
- Commit 5: Ditto on `TestSuite`, stop glob-reexporting `TestMode::*` variants, and always use `EnumName::VariantName` form.
- Commit 6: Apparently, `src/tools/rustdoc-gui-test/` depends on `compiletest` for `//@ {compile,run}-paths` directive parsing and extraction, which involves creating a dummy `compiletest` config (hence the existence of the default impls removed in Commit 3). Make this a specific associated function with a FIXME pointing to rust-lang/rust#143827 as I think this setup is quite questionable.
Commits {4, 5} are also intended to help improve the self-consistency in nomenclature used within compiletest.
Best reviewed commit-by-commit.
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./x test miri: fix cleaning the miri_ui directory
Fixes https://github.com/rust-lang/rust/issues/143680
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Access `wasi_sdk_path` instead of reading environment variable in bootstrap
Small cleanup to remove an environment variable read that we have performed earlier in bootstrap already.
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htmldocck: better error messages for some negative directives
Previously it was saying "did not match pattern" even when the error was that it did match the pattern, and it wasn't supposed to.
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New tracking issues for const_ops and const_cmp
Let's do a clean start with new tracking issues to avoid mixing things up with the previous constification.
I assume the fact that the `PartialEq` *trait* and *impls* used different feature names was a mistake (the feature name on the impl is entirely irrelevant anyway).
Part of https://github.com/rust-lang/rust/issues/143800, https://github.com/rust-lang/rust/issues/143802
r? ``@oli-obk``
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Shourya742:2025-07-11-remove-format-short-command-trait, r=Kobzol
Remove format short command trait
Since we no longer have traces of the vanilla command, and we're already implementing format_short_command for CommandFingerprint, we can use it directly from the fingerprint. This PR removes the standalone format_short_command trait and moves its implementation under CommandFingerprint.
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r=jdonszelmann
Fix ICE for parsed attributes with longer path not handled by CheckAttribute
Fixes https://github.com/rust-lang/rust/issues/137590
Fixes https://github.com/rust-lang/rust/issues/143789
r? ```@jdonszelmann```
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Update sysinfo version to `0.36.0`
Bugfixes and some new API additions.
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Disambiguate between rustc vs std having debug assertions in `run-make-support` and `run-make` tests
`NO_DEBUG_ASSERTIONS` is set by CI that threads through to the `./configure.py` script, which is somewhat fragile and "spooky action at a distance". For `fmt-write-bloat`, this is actually wrong because the test wants to gate on *std* being built with debug assertions or not, whereas `NO_DEBUG_ASSERTIONS` determines *rustc* being built with debug assertions or not. Instead, use env vars controlled by compiletest, whose debug assertion info comes from bootstrap.
https://github.com/rust-lang/rust/blob/855e0fe46e68d94e9f6147531b75ac2d488c548e/src/ci/run.sh#L137-L146
`NO_DEBUG_ASSERTIONS` controls `--enable-debug-assertions`
https://github.com/rust-lang/rust/blob/855e0fe46e68d94e9f6147531b75ac2d488c548e/src/bootstrap/configure.py#L124
which sets `--rust.debug-assertions`, which controls *rustc* debug assertions.
https://github.com/rust-lang/rust/blob/855e0fe46e68d94e9f6147531b75ac2d488c548e/src/bootstrap/configure.py#L125-L129
`--rust.debug-assertions-std` controls *std* debug assertions.
Noticed while investigating `fmt-write-bloat` in https://github.com/rust-lang/rust/pull/143669#discussion_r2200522215.
Best reviewed commit-by-commit.
r? ``@ChrisDenton`` (or compiler/bootstrap)
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Some const_trait_impl test cleanups
Some tests we forgot to update when the feature gate was reimplemented
r? ``@fee1-dead`` ``@compiler-errors``
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std: move NuttX to use arc4random for random number generation
arc4random support in libc merged in https://github.com/rust-lang/libc/pull/4464, so:
* Move `target_os = "nuttx"` from unix_legacy to arc4random section
* This aligns NuttX with other POSIX-compliant systems that support arc4random
* Improves random number generation quality on NuttX by using the system's built-in arc4random implementation instead of legacy fallback methods
NuttX supports arc4random_buf which provides better entropy and security compared to the legacy random number generation methods.
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de-duplicate condition scoping logic between AST→HIR lowering and `ScopeTree` construction
There was some overlap between `rustc_ast_lowering::LoweringContext::lower_cond` and `rustc_hir_analysis::check::region::resolve_expr`, so I've removed the former and migrated its logic to the latter, with some simplifications.
Consequences:
- For `while` and `if` expressions' `let`-chains, this changes the `HirId`s for the `&&`s to properly correspond to their AST nodes. This is how guards were handled already.
- This makes match guards share previously-duplicated logic with `if`/`while` expressions. This will also be used by guard pattern[^1] guards.
- Aside from legacy syntax extensions (e.g. some builtin macros) that directly feed AST to the compiler, it's currently impossible to put attributes directly on `&&` operators in `let` chains[^2]. Nonetheless, attributes on `&&` operators in `let` chains in `if`/`while` expression conditions are no longer silently ignored and will be lowered.
- This no longer wraps conditions in `DropTemps`, so the HIR and THIR will be slightly smaller.
- `DesugaringKind::CondTemporary` is now gone. It's no longer applied to any spans, and all uses of it were dead since they were made to account for `if` and `while` being desugared to `match` on a boolean scrutinee.
- Should be a marginal perf improvement beyond that due to leveraging [`ScopeTree` construction](https://github.com/rust-lang/rust/blob/5e749eb66f93ee998145399fbdde337e57cd72ef/compiler/rustc_hir_analysis/src/check/region.rs#L312-L355)'s clever handling of `&&` and `||`:
- This removes some unnecessary terminating scopes that were placed around top-level `&&` and `||` operators in conditions. When lowered to MIR, logical operator chains don't create intermediate boolean temporaries, so there's no temporary to drop. The linked snippet handles wrapping the operands in terminating scopes as necessary, in case they create temporaries.
- The linked snippet takes care of letting `let` temporaries live and terminating other operands, so we don't need separate traversals of `&&` chains for that.
[^1]: rust-lang/rust#129967
[^2]: Case-by-case, here's my justification: `#[attr] e1 && e2` applies the attribute to `e1`. In `#[attr] (e1 && e2)` , the attribute is on the parentheses in the AST, plus it'd fail to parse if `e1` or `e2` contains a `let`. In `#[attr] expands_to_let_chain!()`, the attribute would already be ignored (rust-lang/rust#63221) and it'd fail to parse anyway; even if the expansion site is a condition, the expansion wouldn't be parsed with `Restrictions::ALLOW_LET`. If it *was* allowed, the notion of a "reparse context" from https://github.com/rust-lang/rust/issues/61733#issuecomment-509626449 would be necessary in order to make `let`-chains left-associative; multiple places in the compiler assume they are.
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Split up the `unknown_or_malformed_diagnostic_attributes` lint
This splits up the lint into the following lint group:
- `unknown_diagnostic_attributes` - triggers if the attribute is unknown to the current compiler
- `misplaced_diagnostic_attributes` - triggers if the attribute exists but it is not placed on the item kind it's meant for
- `malformed_diagnostic_attributes` - triggers if the attribute's syntax or options are invalid
- `malformed_diagnostic_format_literals` - triggers if the format string literal is invalid, for example if it has unpaired curly braces or invalid parameters
- this pr doesn't create it, but future lints for things like deprecations can also go here.
This PR does not start emitting lints in places that previously did not.
## Motivation
I want to have finer control over what `unknown_or_malformed_diagnostic_attributes` does
I have a project with fairly low msrv that is/will have a lower msrv than future diagnostic attributes. So lints will be emitted when I or others compile it on a lower msrv.
At this time, there are two options to silence these lints:
- `#[allow(unknown_or_malformed_diagnostic_attributes)]` - this risks diagnostic regressions if I (or others) mess up using the attribute, or if the attribute's syntax ever changes.
- write a build script to detect the compiler version and emit cfgs, and then conditionally enable the attribute:
```rust
#[cfg_attr(rust_version_99, diagnostic::new_attr_in_rust_99(thing = ..))]`
struct Foo;
```
or conditionally `allow` the lint:
```rust
// lib.rs
#![cfg_attr(not(current_rust), allow(unknown_or_malformed_diagnostic_attributes))]
```
I like to avoid using build scripts if I can, so the following works much better for me. That is what this PR will let me do in the future:
```rust
#[allow(unknown_diagnostic_attribute, reason = "attribute came out in rust 1.99 but msrv is 1.70")]
#[diagnostic::new_attr_in_rust_99(thing = ..)]`
struct Foo;
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compute all rpitit of a trait
Fixes rust-lang/rust#143697
r? `@compiler-errors`
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Additionally, remove unused `tests/ui/auxiliary/svh-*` crates that are duplicates of `tests/ui/svh/auxiliary/svh-*`.
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Propagate from borrowed locals in CopyProp
r? cjgillot
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and glob_binding
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Rollup of 9 pull requests
Successful merges:
- rust-lang/rust#143403 (Port several trait/coherence-related attributes the new attribute system)
- rust-lang/rust#143633 (fix: correct assertion to check for 'noinline' attribute presence before removal)
- rust-lang/rust#143647 (Clarify and expand documentation for std::sys_common dependency structure)
- rust-lang/rust#143716 (compiler: doc/comment some codegen-for-functions interfaces)
- rust-lang/rust#143747 (Add target maintainer information for aarch64-unknown-linux-musl)
- rust-lang/rust#143759 (Fix typos in function names in the `target_feature` test)
- rust-lang/rust#143767 (Bump `src/tools/x` to Edition 2024 and some cleanups)
- rust-lang/rust#143769 (Remove support for SwitchInt edge effects in backward dataflow)
- rust-lang/rust#143770 (build-helper: clippy fixes)
r? `@ghost`
`@rustbot` modify labels: rollup
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