Rollup of 5 pull requests

Cargo.lock

@@ -367,7 +367,7 @@ dependencies = [
 name = "cargo-miri"
 version = "0.1.0"
 dependencies = [
- "cargo_metadata",
+ "cargo_metadata 0.18.1",
  "directories",
  "rustc-build-sysroot",
  "rustc_tools_util",
@@ -399,6 +399,20 @@ dependencies = [
  "thiserror 1.0.69",
 ]
 
+[[package]]
+name = "cargo_metadata"
+version = "0.19.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8769706aad5d996120af43197bf46ef6ad0fda35216b4505f926a365a232d924"
+dependencies = [
+ "camino",
+ "cargo-platform",
+ "semver",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.9",
+]
+
 [[package]]
 name = "cargotest2"
 version = "0.1.0"
@@ -533,7 +547,7 @@ name = "clippy"
 version = "0.1.85"
 dependencies = [
  "anstream",
- "cargo_metadata",
+ "cargo_metadata 0.18.1",
  "clippy_config",
  "clippy_lints",
  "clippy_utils",
@@ -589,7 +603,7 @@ name = "clippy_lints"
 version = "0.1.85"
 dependencies = [
  "arrayvec",
- "cargo_metadata",
+ "cargo_metadata 0.18.1",
  "clippy_config",
  "clippy_utils",
  "itertools",
@@ -1389,7 +1403,7 @@ name = "generate-copyright"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "cargo_metadata",
+ "cargo_metadata 0.18.1",
  "rinja",
  "serde",
  "serde_json",
@@ -4750,7 +4764,7 @@ dependencies = [
  "annotate-snippets 0.9.2",
  "anyhow",
  "bytecount",
- "cargo_metadata",
+ "cargo_metadata 0.18.1",
  "clap",
  "clap-cargo",
  "diff",
@@ -5344,7 +5358,7 @@ name = "tidy"
 version = "0.1.0"
 dependencies = [
  "build_helper",
- "cargo_metadata",
+ "cargo_metadata 0.19.1",
  "fluent-syntax",
  "ignore",
  "miropt-test-tools",
@@ -5622,7 +5636,7 @@ dependencies = [
  "anyhow",
  "bstr",
  "cargo-platform",
- "cargo_metadata",
+ "cargo_metadata 0.18.1",
  "color-eyre",
  "colored",
  "comma",

compiler/rustc_parse/src/parser/diagnostics.rs

@@ -755,7 +755,7 @@ impl<'a> Parser<'a> {
         // When there are a few keywords in the last ten elements of `self.expected_token_types`
         // and the current token is an identifier, it's probably a misspelled keyword. This handles
         // code like `async Move {}`, misspelled `if` in match guard, misspelled `else` in
-        // `if`-`else` and mispelled `where` in a where clause.
+        // `if`-`else` and misspelled `where` in a where clause.
         if !expected_keywords.is_empty()
             && !curr_ident.is_used_keyword()
             && let Some(misspelled_kw) = find_similar_kw(curr_ident, &expected_keywords)

compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_none.rs

@@ -1,4 +1,4 @@
-use crate::spec::{Cc, LinkerFlavor, Lld, StackProbeType, Target, base};
+use crate::spec::{Cc, LinkerFlavor, Lld, PanicStrategy, StackProbeType, Target, base};
 
 pub(crate) fn target() -> Target {
     let mut base = base::linux::opts();
@@ -7,14 +7,15 @@ pub(crate) fn target() -> Target {
     base.stack_probes = StackProbeType::Inline;
     base.linker_flavor = LinkerFlavor::Gnu(Cc::No, Lld::Yes);
     base.linker = Some("rust-lld".into());
+    base.panic_strategy = PanicStrategy::Abort;
 
     Target {
         llvm_target: "x86_64-unknown-linux-none".into(),
         metadata: crate::spec::TargetMetadata {
             description: None,
             tier: None,
             host_tools: None,
-            std: Some(true),
+            std: Some(false),
         },
         pointer_width: 64,
         data_layout:

library/alloc/src/raw_vec.rs

@@ -420,7 +420,7 @@ impl<A: Allocator> RawVecInner<A> {
         match Self::try_allocate_in(capacity, AllocInit::Uninitialized, alloc, elem_layout) {
             Ok(this) => {
                 unsafe {
-                    // Make it more obvious that a subsquent Vec::reserve(capacity) will not allocate.
+                    // Make it more obvious that a subsequent Vec::reserve(capacity) will not allocate.
                     hint::assert_unchecked(!this.needs_to_grow(0, capacity, elem_layout));
                 }
                 this

library/std/src/thread/current.rs

@@ -136,7 +136,7 @@ pub(crate) fn set_current(thread: Thread) -> Result<(), Thread> {
 /// one thread and is guaranteed not to call the global allocator.
 #[inline]
 pub(crate) fn current_id() -> ThreadId {
-    // If accessing the persistant thread ID takes multiple TLS accesses, try
+    // If accessing the persistent thread ID takes multiple TLS accesses, try
     // to retrieve it from the current thread handle, which will only take one
     // TLS access.
     if !id::CHEAP {

src/bootstrap/src/bin/rustc.rs

@@ -28,6 +28,9 @@ use shared_helpers::{
 #[path = "../utils/shared_helpers.rs"]
 mod shared_helpers;
 
+#[path = "../utils/proc_macro_deps.rs"]
+mod proc_macro_deps;
+
 fn main() {
     let orig_args = env::args_os().skip(1).collect::<Vec<_>>();
     let mut args = orig_args.clone();
@@ -167,7 +170,7 @@ fn main() {
         // issue https://github.com/rust-lang/rust/issues/100530
         if env::var("RUSTC_TLS_MODEL_INITIAL_EXEC").is_ok()
             && crate_type != Some("proc-macro")
-            && !matches!(crate_name, Some("proc_macro2" | "quote" | "syn" | "synstructure"))
+            && proc_macro_deps::CRATES.binary_search(&crate_name.unwrap_or_default()).is_err()
         {
             cmd.arg("-Ztls-model=initial-exec");
         }

src/bootstrap/src/utils/proc_macro_deps.rs

@@ -0,0 +1,71 @@
+/// Do not update manually - use `./x.py test tidy --bless`
+/// Holds all direct and indirect dependencies of proc-macro crates in tree.
+/// See https://github.com/rust-lang/rust/issues/134863
+pub static CRATES: &[&str] = &[
+    // tidy-alphabetical-start
+    "annotate-snippets",
+    "anstyle",
+    "basic-toml",
+    "block-buffer",
+    "bumpalo",
+    "cfg-if",
+    "cpufeatures",
+    "crypto-common",
+    "darling",
+    "darling_core",
+    "derive_builder_core",
+    "digest",
+    "fluent-bundle",
+    "fluent-langneg",
+    "fluent-syntax",
+    "fnv",
+    "generic-array",
+    "heck",
+    "ident_case",
+    "intl-memoizer",
+    "intl_pluralrules",
+    "libc",
+    "log",
+    "memchr",
+    "mime",
+    "mime_guess",
+    "minimal-lexical",
+    "nom",
+    "num-conv",
+    "once_cell",
+    "pest",
+    "pest_generator",
+    "pest_meta",
+    "proc-macro2",
+    "quote",
+    "rinja_parser",
+    "rustc-hash",
+    "self_cell",
+    "serde",
+    "sha2",
+    "smallvec",
+    "stable_deref_trait",
+    "strsim",
+    "syn",
+    "synstructure",
+    "thiserror",
+    "time-core",
+    "tinystr",
+    "type-map",
+    "typenum",
+    "ucd-trie",
+    "unic-langid",
+    "unic-langid-impl",
+    "unic-langid-macros",
+    "unicase",
+    "unicode-ident",
+    "unicode-width",
+    "version_check",
+    "wasm-bindgen-backend",
+    "wasm-bindgen-macro-support",
+    "wasm-bindgen-shared",
+    "yoke",
+    "zerofrom",
+    "zerovec",
+    // tidy-alphabetical-end
+];

src/ci/docker/README.md

@@ -26,6 +26,12 @@ DEPLOY=1 ./src/ci/docker/run.sh x86_64-gnu
 while locally, to the `obj/$image_name` directory. This is primarily to prevent
 strange linker errors when using multiple Docker images.
 
+For some Linux workflows (for example `x86_64-gnu-llvm-18-N`), the process is more involved. You will need to see which script is executed for the given workflow inside the [`jobs.yml`](../github-actions/jobs.yml) file and pass it through the `DOCKER_SCRIPT` environment variable. For example, to reproduce the `x86_64-gnu-llvm-18-3` workflow, you can run the following script:
+
+```
+DOCKER_SCRIPT=x86_64-gnu-llvm3.sh ./src/ci/docker/run.sh x86_64-gnu-llvm-18
+```
+
 ## Local Development
 
 Refer to the [dev guide](https://rustc-dev-guide.rust-lang.org/tests/docker.html) for more information on testing locally.

src/doc/rustc/src/platform-support/android.md

@@ -65,4 +65,4 @@ Currently the `riscv64-linux-android` target requires the following architecture
 ### aarch64-linux-android on Nightly compilers
 
 As soon as `-Zfixed-x18` compiler flag is supplied, the [`ShadowCallStack` sanitizer](https://releases.llvm.org/7.0.1/tools/clang/docs/ShadowCallStack.html)
-instrumentation is also made avaiable by supplying the second compiler flag `-Zsanitizer=shadow-call-stack`.
+instrumentation is also made available by supplying the second compiler flag `-Zsanitizer=shadow-call-stack`.

src/doc/rustc/src/platform-support/x86_64-unknown-linux-none.md

@@ -14,6 +14,11 @@ This target is cross compiled and can be built from any host.
 
 This target has no support for host tools, std, or alloc.
 
+One of the primary motivations of the target is to write a dynamic linker and libc in Rust.
+For that, the target defaults to position-independent code and position-independent executables (PIE) by default.
+PIE binaries need relocation at runtime. This is usually done by the dynamic linker or libc.
+You can use `-Crelocation-model=static` to create a position-dependent binary that does not need relocation at runtime.
+
 ## Building the target
 
 The target can be built by enabling it for a `rustc` build:

src/tools/tidy/Cargo.toml

@@ -6,7 +6,7 @@ autobins = false
 
 [dependencies]
 build_helper = { path = "../../build_helper" }
-cargo_metadata = "0.18"
+cargo_metadata = "0.19"
 regex = "1"
 miropt-test-tools = { path = "../miropt-test-tools" }
 walkdir = "2"

src/tools/tidy/src/deps.rs

@@ -1,12 +1,16 @@
 //! Checks the licenses of third-party dependencies.
 
 use std::collections::HashSet;
-use std::fs::read_dir;
+use std::fs::{File, read_dir};
+use std::io::Write;
 use std::path::Path;
 
 use build_helper::ci::CiEnv;
 use cargo_metadata::{Metadata, Package, PackageId};
 
+#[path = "../../../bootstrap/src/utils/proc_macro_deps.rs"]
+mod proc_macro_deps;
+
 /// These are licenses that are allowed for all crates, including the runtime,
 /// rustc, tools, etc.
 #[rustfmt::skip]
@@ -564,9 +568,11 @@ const PERMITTED_CRANELIFT_DEPENDENCIES: &[&str] = &[
 ///
 /// `root` is path to the directory with the root `Cargo.toml` (for the workspace). `cargo` is path
 /// to the cargo executable.
-pub fn check(root: &Path, cargo: &Path, bad: &mut bool) {
+pub fn check(root: &Path, cargo: &Path, bless: bool, bad: &mut bool) {
     let mut checked_runtime_licenses = false;
 
+    check_proc_macro_dep_list(root, cargo, bless, bad);
+
     for &(workspace, exceptions, permitted_deps, submodules) in WORKSPACES {
         if has_missing_submodule(root, submodules) {
             continue;
@@ -600,6 +606,71 @@ pub fn check(root: &Path, cargo: &Path, bad: &mut bool) {
     assert!(checked_runtime_licenses);
 }
 
+/// Ensure the list of proc-macro crate transitive dependencies is up to date
+fn check_proc_macro_dep_list(root: &Path, cargo: &Path, bless: bool, bad: &mut bool) {
+    let mut cmd = cargo_metadata::MetadataCommand::new();
+    cmd.cargo_path(cargo)
+        .manifest_path(root.join("Cargo.toml"))
+        .features(cargo_metadata::CargoOpt::AllFeatures)
+        .other_options(vec!["--locked".to_owned()]);
+    let metadata = t!(cmd.exec());
+    let is_proc_macro_pkg = |pkg: &Package| pkg.targets.iter().any(|target| target.is_proc_macro());
+
+    let mut proc_macro_deps = HashSet::new();
+    for pkg in metadata.packages.iter().filter(|pkg| is_proc_macro_pkg(*pkg)) {
+        deps_of(&metadata, &pkg.id, &mut proc_macro_deps);
+    }
+    // Remove the proc-macro crates themselves
+    proc_macro_deps.retain(|pkg| !is_proc_macro_pkg(&metadata[pkg]));
+    let proc_macro_deps_iter = proc_macro_deps.into_iter().map(|dep| metadata[dep].name.clone());
+
+    if bless {
+        let mut proc_macro_deps: Vec<_> = proc_macro_deps_iter.collect();
+        proc_macro_deps.sort();
+        proc_macro_deps.dedup();
+        let mut file = File::create(root.join("src/bootstrap/src/utils/proc_macro_deps.rs"))
+            .expect("`proc_macro_deps` should exist");
+        writeln!(
+            &mut file,
+            "/// Do not update manually - use `./x.py test tidy --bless`
+/// Holds all direct and indirect dependencies of proc-macro crates in tree.
+/// See https://github.com/rust-lang/rust/issues/134863
+pub static CRATES: &[&str] = &[
+    // tidy-alphabetical-start"
+        )
+        .unwrap();
+        for dep in proc_macro_deps {
+            writeln!(&mut file, "    {dep:?},").unwrap();
+        }
+        writeln!(
+            &mut file,
+            "    // tidy-alphabetical-end
+];"
+        )
+        .unwrap();
+    } else {
+        let proc_macro_deps: HashSet<_> = proc_macro_deps_iter.collect();
+        let expected =
+            proc_macro_deps::CRATES.iter().map(|s| s.to_string()).collect::<HashSet<_>>();
+        let old_bad = *bad;
+        for missing in proc_macro_deps.difference(&expected) {
+            tidy_error!(
+                bad,
+                "proc-macro crate dependency `{missing}` is not registered in `src/bootstrap/src/utils/proc_macro_deps.rs`",
+            );
+        }
+        for extra in expected.difference(&proc_macro_deps) {
+            tidy_error!(
+                bad,
+                "`{extra}` is not registered in `src/bootstrap/src/utils/proc_macro_deps.rs`, but is not a proc-macro crate dependency",
+            );
+        }
+        if *bad != old_bad {
+            eprintln!("Run `./x.py test tidy --bless` to regenerate the list");
+        }
+    }
+}
+
 /// Used to skip a check if a submodule is not checked out, and not in a CI environment.
 ///
 /// This helps prevent enforcing developers to fetch submodules for tidy.

src/tools/tidy/src/main.rs

@@ -95,7 +95,7 @@ fn main() {
         check!(target_specific_tests, &tests_path);
 
         // Checks that are done on the cargo workspace.
-        check!(deps, &root_path, &cargo);
+        check!(deps, &root_path, &cargo, bless);
         check!(extdeps, &root_path);
 
         // Checks over tests.