Merge ref 'eda4fc7733ee' from rust-lang/rust

Pull recent changes from https://github.com/rust-lang/rust via Josh.

Upstream ref: rust-lang/rust@eda4fc7
Filtered ref: rust-lang/stdarch@3f3adc6
Upstream diff: rust-lang/rust@1396514...eda4fc7

This merge was created using https://github.com/rust-lang/josh-sync.

Author: The rustc-josh-sync Cronjob Bot

.codecov.yml

@@ -0,0 +1,10 @@
+coverage:
+  range: 40...60
+  status:
+    patch: off
+    project:
+      default:
+        informational: true
+
+# Don't leave comments on PRs
+comment: false

.github/workflows/ci.yaml

@@ -50,7 +50,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha }}
 
       - name: Install rustup-toolchain-install-master
-        run: cargo install rustup-toolchain-install-master@1.6.0
+        run: cargo install rustup-toolchain-install-master@1.11.0
 
       # Install a pinned rustc commit to avoid surprises
       - name: Install Rust toolchain
@@ -96,7 +96,7 @@ jobs:
         run: |
           rustup update --no-self-update stable
           rustup default stable
-          rustup component add --toolchain stable rust-src clippy rustfmt
+          rustup component add --toolchain stable rust-src rustfmt
           # We also install a nightly rustfmt, because we use `--file-lines` in
           # a test.
           rustup toolchain install nightly --profile minimal --component rustfmt
@@ -128,10 +128,6 @@ jobs:
       - name: Run cargo-machete
         run: cargo machete
 
-      - name: Run Clippy
-        if: matrix.os == 'macos-latest'
-        run: cargo clippy --all-targets -- -D clippy::disallowed_macros -D clippy::dbg_macro -D clippy::todo -D clippy::print_stdout -D clippy::print_stderr
-
   analysis-stats:
     if: github.repository == 'rust-lang/rust-analyzer'
     runs-on: ubuntu-latest
@@ -178,6 +174,28 @@ jobs:
 
       - run: cargo fmt -- --check
 
+  clippy:
+    if: github.repository == 'rust-lang/rust-analyzer'
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Note that clippy output is currently dependent on whether rust-src is installed,
+      # https://github.com/rust-lang/rust-clippy/issues/14625
+      - name: Install Rust toolchain
+        run: |
+          rustup update --no-self-update stable
+          rustup default stable
+          rustup component add --toolchain stable rust-src clippy
+
+      # https://github.com/actions-rust-lang/setup-rust-toolchain/blob/main/rust.json
+      - name: Install Rust Problem Matcher
+        run: echo "::add-matcher::.github/rust.json"
+
+      - run: cargo clippy --all-targets -- -D clippy::disallowed_macros -D clippy::dbg_macro -D clippy::todo -D clippy::print_stdout -D clippy::print_stderr
+
   miri:
     if: github.repository == 'rust-lang/rust-analyzer'
     runs-on: ubuntu-latest
@@ -188,8 +206,11 @@ jobs:
 
       - name: Install Rust toolchain
         run: |
-          rustup update --no-self-update nightly
-          rustup default nightly
+          # FIXME: Pin nightly due to a regression in miri on nightly-2026-02-12.
+          # See https://github.com/rust-lang/miri/issues/4855.
+          # Revert to plain `nightly` once this is fixed upstream.
+          rustup toolchain install nightly-2026-02-10
+          rustup default nightly-2026-02-10
           rustup component add miri
 
       # - name: Cache Dependencies
@@ -205,7 +226,12 @@ jobs:
 
     strategy:
       matrix:
-        target: [powerpc-unknown-linux-gnu, x86_64-unknown-linux-musl, wasm32-unknown-unknown]
+        target:
+          [
+            powerpc-unknown-linux-gnu,
+            x86_64-unknown-linux-musl,
+            wasm32-unknown-unknown,
+          ]
         include:
           # The rust-analyzer binary is not expected to compile on WASM, but the IDE
           # crate should
@@ -309,7 +335,18 @@ jobs:
         run: typos
 
   conclusion:
-    needs: [rust, rust-cross, typescript, typo-check, proc-macro-srv, miri, rustfmt, analysis-stats]
+    needs:
+      [
+        rust,
+        rust-cross,
+        typescript,
+        typo-check,
+        proc-macro-srv,
+        miri,
+        rustfmt,
+        clippy,
+        analysis-stats,
+      ]
     # We need to ensure this job does *not* get skipped if its dependencies fail,
     # because a skipped job is considered a success by GitHub. So we have to
     # overwrite `if:`. We use `!cancelled()` to ensure the job does still not get run

.github/workflows/coverage.yaml

@@ -0,0 +1,44 @@
+name: Coverage
+
+on: [pull_request, push]
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  CI: 1
+  RUST_BACKTRACE: short
+  RUSTUP_MAX_RETRIES: 10
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        run: |
+          rustup update --no-self-update nightly
+          rustup default nightly
+          rustup component add --toolchain nightly rust-src rustc-dev rustfmt
+          # We also install a nightly rustfmt, because we use `--file-lines` in
+          # a test.
+          rustup toolchain install nightly --profile minimal --component rustfmt
+
+          rustup toolchain install nightly --component llvm-tools-preview
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+
+      - name: Install nextest
+        uses: taiki-e/install-action@nextest
+
+      - name: Generate code coverage
+        run: cargo llvm-cov --workspace --lcov --output-path lcov.info
+      
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          files: lcov.info
+          fail_ci_if_error: false
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true

AGENTS.md

@@ -0,0 +1 @@
+CLAUDE.md

CLAUDE.md

@@ -0,0 +1,40 @@
+**Reminder: All AI usage must be disclosed in commit messages, see
+CONTRIBUTING.md for more details.**
+
+## Build Commands
+
+```bash
+cargo build                    # Build all crates
+cargo test                     # Run all tests
+cargo test -p <crate>          # Run tests for a specific crate (e.g., cargo test -p hir-ty)
+cargo lint                     # Run clippy on all targets
+cargo xtask codegen            # Run code generation
+cargo xtask tidy               # Run tidy checks
+UPDATE_EXPECT=1 cargo test     # Update test expectations (snapshot tests)
+RUN_SLOW_TESTS=1 cargo test    # Run heavy/slow tests
+```
+
+## Key Architectural Invariants
+
+- Typing in a function body never invalidates global derived data
+- Parser/syntax tree is built per-file to enable parallel parsing
+- The server is stateless (HTTP-like); context must be re-created from request parameters
+- Cancellation uses salsa's cancellation mechanism; computations panic with a `Cancelled` payload
+
+### Code Generation
+
+Generated code is committed to the repo. Grammar and AST are generated from `ungrammar`. Run `cargo test -p xtask` after adding inline parser tests (`// test test_name` comments).
+
+## Testing
+
+Tests are snapshot-based using `expect-test`. Test fixtures use a mini-language:
+- `$0` marks cursor position
+- `// ^^^^` labels attach to the line above
+- `//- minicore: sized, fn` includes parts of minicore (minimal core library)
+- `//- /path/to/file.rs crate:name deps:dep1,dep2` declares files/crates
+
+## Style Notes
+
+- Use `stdx::never!` and `stdx::always!` instead of `assert!` for recoverable invariants
+- Use `T![fn]` macro instead of `SyntaxKind::FN_KW`
+- Use keyword name mangling over underscore prefixing for identifiers: `crate` → `krate`, `fn` → `func`, `struct` → `strukt`, `type` → `ty`

Cargo.lock

@@ -135,13 +135,13 @@ rayon = "1.10.0"
 rowan = "=0.15.17"
 # Ideally we'd not enable the macros feature but unfortunately the `tracked` attribute does not work
 # on impls without it
-salsa = { version = "0.26", default-features = false, features = [
+salsa = { version = "0.25.2", default-features = false, features = [
     "rayon",
     "salsa_unstable",
     "macros",
     "inventory",
 ] }
-salsa-macros = "0.26"
+salsa-macros = "0.25.2"
 semver = "1.0.26"
 serde = { version = "1.0.219" }
 serde_derive = { version = "1.0.219" }

Cargo.toml

@@ -60,7 +60,7 @@ const _: () = {
         }
     }
 
-    impl zalsa_::HashEqLike<WithoutCrate> for EditionedFileIdData {
+    impl zalsa_struct_::HashEqLike<WithoutCrate> for EditionedFileIdData {
         #[inline]
         fn hash<H: Hasher>(&self, state: &mut H) {
             Hash::hash(self, state);

crates/base-db/src/editioned_file_id.rs

@@ -742,7 +742,7 @@ impl CrateGraphBuilder {
         deps.into_iter()
     }
 
-    /// Returns all crates in the graph, sorted in topological order (ie. dependencies of a crate
+    /// Returns all crates in the graph, sorted in topological order (i.e. dependencies of a crate
     /// come before the crate itself).
     fn crates_in_topological_order(&self) -> Vec<CrateBuilderId> {
         let mut res = Vec::new();

crates/base-db/src/input.rs

@@ -32,7 +32,7 @@ pub use crate::{
     },
 };
 use dashmap::{DashMap, mapref::entry::Entry};
-pub use query_group::{self};
+pub use query_group;
 use rustc_hash::{FxHashSet, FxHasher};
 use salsa::{Durability, Setter};
 pub use semver::{BuildMetadata, Prerelease, Version, VersionReq};