Auto merge of rust-lang#113608 - workingjubilee:rollup-8763ius, r=workingjubilee

Rollup of 5 pull requests

Successful merges:

 - rust-lang#113373 (various download-rustc fixes)
 - rust-lang#113385 (style-guide: Fix chain example to match rustfmt behavior)
 - rust-lang#113567 (While let suggestion will work for closure body)
 - rust-lang#113579 (Revert "fix: 🐛 etc/bash_complettion -> src/etc/... to avoid copy …)
 - rust-lang#113595 (Use constants from object crate)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_codegen_ssa/src/back/metadata.rs

@@ -12,7 +12,6 @@ use object::{
 
 use snap::write::FrameEncoder;
 
-use object::elf::NT_GNU_PROPERTY_TYPE_0;
 use rustc_data_structures::memmap::Mmap;
 use rustc_data_structures::owned_slice::{try_slice_owned, OwnedSlice};
 use rustc_metadata::fs::METADATA_FILENAME;
@@ -124,7 +123,7 @@ fn add_gnu_property_note(
     let mut data: Vec<u8> = Vec::new();
     let n_namsz: u32 = 4; // Size of the n_name field
     let n_descsz: u32 = 16; // Size of the n_desc field
-    let n_type: u32 = NT_GNU_PROPERTY_TYPE_0; // Type of note descriptor
+    let n_type: u32 = object::elf::NT_GNU_PROPERTY_TYPE_0; // Type of note descriptor
     let header_values = [n_namsz, n_descsz, n_type];
     header_values.iter().for_each(|v| {
         data.extend_from_slice(&match endianness {
@@ -134,8 +133,8 @@ fn add_gnu_property_note(
     });
     data.extend_from_slice(b"GNU\0"); // Owner of the program property note
     let pr_type: u32 = match architecture {
-        Architecture::X86_64 => 0xc0000002,
-        Architecture::Aarch64 => 0xc0000000,
+        Architecture::X86_64 => object::elf::GNU_PROPERTY_X86_FEATURE_1_AND,
+        Architecture::Aarch64 => object::elf::GNU_PROPERTY_AARCH64_FEATURE_1_AND,
         _ => unreachable!(),
     };
     let pr_datasz: u32 = 4; //size of the pr_data field

compiler/rustc_infer/src/infer/error_reporting/suggest.rs

@@ -464,52 +464,53 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
         span: Span,
     ) -> Option<TypeErrorAdditionalDiags> {
         let hir = self.tcx.hir();
-        if let Some(node) = self.tcx.hir().find_by_def_id(cause.body_id) &&
-            let hir::Node::Item(hir::Item {
-                    kind: hir::ItemKind::Fn(_sig, _, body_id), ..
-                }) = node {
-        let body = hir.body(*body_id);
-
-        /// Find the if expression with given span
-        struct IfVisitor {
-            pub result: bool,
-            pub found_if: bool,
-            pub err_span: Span,
-        }
+        if let Some(body_id) = self.tcx.hir().maybe_body_owned_by(cause.body_id) {
+            let body = hir.body(body_id);
+
+            /// Find the if expression with given span
+            struct IfVisitor {
+                pub result: bool,
+                pub found_if: bool,
+                pub err_span: Span,
+            }
 
-        impl<'v> Visitor<'v> for IfVisitor {
-            fn visit_expr(&mut self, ex: &'v hir::Expr<'v>) {
-                if self.result { return; }
-                match ex.kind {
-                    hir::ExprKind::If(cond, _, _) => {
-                        self.found_if = true;
-                        walk_expr(self, cond);
-                        self.found_if = false;
+            impl<'v> Visitor<'v> for IfVisitor {
+                fn visit_expr(&mut self, ex: &'v hir::Expr<'v>) {
+                    if self.result {
+                        return;
+                    }
+                    match ex.kind {
+                        hir::ExprKind::If(cond, _, _) => {
+                            self.found_if = true;
+                            walk_expr(self, cond);
+                            self.found_if = false;
+                        }
+                        _ => walk_expr(self, ex),
                     }
-                    _ => walk_expr(self, ex),
                 }
-            }
 
-            fn visit_stmt(&mut self, ex: &'v hir::Stmt<'v>) {
-                if let hir::StmtKind::Local(hir::Local {
-                        span, pat: hir::Pat{..}, ty: None, init: Some(_), ..
-                    }) = &ex.kind
-                    && self.found_if
-                    && span.eq(&self.err_span) {
-                        self.result = true;
+                fn visit_stmt(&mut self, ex: &'v hir::Stmt<'v>) {
+                    if let hir::StmtKind::Local(hir::Local {
+                                    span, pat: hir::Pat{..}, ty: None, init: Some(_), ..
+                                }) = &ex.kind
+                                && self.found_if
+                                && span.eq(&self.err_span) {
+                                self.result = true;
+                            }
+                    walk_stmt(self, ex);
                 }
-                walk_stmt(self, ex);
-            }
 
-            fn visit_body(&mut self, body: &'v hir::Body<'v>) {
-                hir::intravisit::walk_body(self, body);
+                fn visit_body(&mut self, body: &'v hir::Body<'v>) {
+                    hir::intravisit::walk_body(self, body);
+                }
             }
-        }
 
-        let mut visitor = IfVisitor { err_span: span, found_if: false, result: false };
-        visitor.visit_body(&body);
-        if visitor.result {
-                return Some(TypeErrorAdditionalDiags::AddLetForLetChains{span: span.shrink_to_lo()});
+            let mut visitor = IfVisitor { err_span: span, found_if: false, result: false };
+            visitor.visit_body(&body);
+            if visitor.result {
+                return Some(TypeErrorAdditionalDiags::AddLetForLetChains {
+                    span: span.shrink_to_lo(),
+                });
             }
         }
         None

src/bootstrap/compile.rs

@@ -688,8 +688,8 @@ fn cp_rustc_component_to_ci_sysroot(
     contents: Vec<String>,
 ) {
     let sysroot = builder.ensure(Sysroot { compiler, force_recompile: false });
+    let ci_rustc_dir = builder.config.ci_rustc_dir();
 
-    let ci_rustc_dir = builder.out.join(&*builder.build.build.triple).join("ci-rustc");
     for file in contents {
         let src = ci_rustc_dir.join(&file);
         let dst = sysroot.join(file);
@@ -1424,7 +1424,7 @@ impl Step for Sysroot {
                 // FIXME: this is wrong when compiler.host != build, but we don't support that today
                 OsStr::new(std::env::consts::DLL_EXTENSION),
             ];
-            let ci_rustc_dir = builder.ci_rustc_dir(builder.config.build);
+            let ci_rustc_dir = builder.config.ci_rustc_dir();
             builder.cp_filtered(&ci_rustc_dir, &sysroot, &|path| {
                 if path.extension().map_or(true, |ext| !filtered_extensions.contains(&ext)) {
                     return true;

src/bootstrap/config.rs

@@ -1375,6 +1375,25 @@ impl Config {
         let mut omit_git_hash = None;
 
         if let Some(rust) = toml.rust {
+            set(&mut config.channel, rust.channel);
+
+            config.download_rustc_commit = config.download_ci_rustc_commit(rust.download_rustc);
+            // This list is incomplete, please help by expanding it!
+            if config.download_rustc_commit.is_some() {
+                // We need the channel used by the downloaded compiler to match the one we set for rustdoc;
+                // otherwise rustdoc-ui tests break.
+                let ci_channel = t!(fs::read_to_string(config.src.join("src/ci/channel")));
+                let ci_channel = ci_channel.trim_end();
+                if config.channel != ci_channel
+                    && !(config.channel == "dev" && ci_channel == "nightly")
+                {
+                    panic!(
+                        "setting rust.channel={} is incompatible with download-rustc",
+                        config.channel
+                    );
+                }
+            }
+
             debug = rust.debug;
             debug_assertions = rust.debug_assertions;
             debug_assertions_std = rust.debug_assertions_std;
@@ -1386,6 +1405,7 @@ impl Config {
             debuginfo_level_std = rust.debuginfo_level_std;
             debuginfo_level_tools = rust.debuginfo_level_tools;
             debuginfo_level_tests = rust.debuginfo_level_tests;
+
             config.rust_split_debuginfo = rust
                 .split_debuginfo
                 .as_deref()
@@ -1401,7 +1421,6 @@ impl Config {
             set(&mut config.jemalloc, rust.jemalloc);
             set(&mut config.test_compare_mode, rust.test_compare_mode);
             set(&mut config.backtrace, rust.backtrace);
-            set(&mut config.channel, rust.channel);
             config.description = rust.description;
             set(&mut config.rust_dist_src, rust.dist_src);
             set(&mut config.verbose_tests, rust.verbose_tests);
@@ -1442,8 +1461,6 @@ impl Config {
             config.rust_codegen_units_std = rust.codegen_units_std.map(threads_from_config);
             config.rust_profile_use = flags.rust_profile_use.or(rust.profile_use);
             config.rust_profile_generate = flags.rust_profile_generate.or(rust.profile_generate);
-            config.download_rustc_commit = config.download_ci_rustc_commit(rust.download_rustc);
-
             config.rust_lto = rust
                 .lto
                 .as_deref()
@@ -1555,6 +1572,11 @@ impl Config {
                 let mut target = Target::from_triple(&triple);
 
                 if let Some(ref s) = cfg.llvm_config {
+                    if config.download_rustc_commit.is_some() && triple == &*config.build.triple {
+                        panic!(
+                            "setting llvm_config for the host is incompatible with download-rustc"
+                        );
+                    }
                     target.llvm_config = Some(config.src.join(s));
                 }
                 target.llvm_has_rust_patches = cfg.llvm_has_rust_patches;
@@ -1825,6 +1847,12 @@ impl Config {
         self.out.join(&*self.build.triple).join("ci-llvm")
     }
 
+    /// Directory where the extracted `rustc-dev` component is stored.
+    pub(crate) fn ci_rustc_dir(&self) -> PathBuf {
+        assert!(self.download_rustc());
+        self.out.join(self.build.triple).join("ci-rustc")
+    }
+
     /// Determine whether llvm should be linked dynamically.
     ///
     /// If `false`, llvm should be linked statically.
@@ -1860,11 +1888,11 @@ impl Config {
         self.download_rustc_commit().is_some()
     }
 
-    pub(crate) fn download_rustc_commit(&self) -> Option<&'static str> {
+    pub(crate) fn download_rustc_commit(&self) -> Option<&str> {
         static DOWNLOAD_RUSTC: OnceCell<Option<String>> = OnceCell::new();
         if self.dry_run() && DOWNLOAD_RUSTC.get().is_none() {
             // avoid trying to actually download the commit
-            return None;
+            return self.download_rustc_commit.as_deref();
         }
 
         DOWNLOAD_RUSTC

src/bootstrap/dist.rs

@@ -1074,11 +1074,7 @@ impl Step for Cargo {
 
         tarball.add_file(&cargo, "bin", 0o755);
         tarball.add_file(etc.join("_cargo"), "share/zsh/site-functions", 0o644);
-        tarball.add_renamed_file(
-            etc.join("cargo.bashcomp.sh"),
-            "src/etc/bash_completion.d",
-            "cargo",
-        );
+        tarball.add_renamed_file(etc.join("cargo.bashcomp.sh"), "etc/bash_completion.d", "cargo");
         tarball.add_dir(etc.join("man"), "share/man/man1");
         tarball.add_legal_and_readme_to("share/doc/cargo");
 

src/bootstrap/download.rs

@@ -402,7 +402,11 @@ impl Config {
 
     fn ci_component_contents(&self, stamp_file: &str) -> Vec<String> {
         assert!(self.download_rustc());
-        let ci_rustc_dir = self.out.join(&*self.build.triple).join("ci-rustc");
+        if self.dry_run() {
+            return vec![];
+        }
+
+        let ci_rustc_dir = self.ci_rustc_dir();
         let stamp_file = ci_rustc_dir.join(stamp_file);
         let contents_file = t!(File::open(&stamp_file), stamp_file.display().to_string());
         t!(BufReader::new(contents_file).lines().collect())
@@ -419,7 +423,7 @@ impl Config {
         self.download_toolchain(
             &version,
             "ci-rustc",
-            commit,
+            &format!("{commit}-{}", self.llvm_assertions),
             &extra_components,
             Self::download_ci_component,
         );
@@ -495,8 +499,15 @@ impl Config {
 
     /// Download a single component of a CI-built toolchain (not necessarily a published nightly).
     // NOTE: intentionally takes an owned string to avoid downloading multiple times by accident
-    fn download_ci_component(&self, filename: String, prefix: &str, commit: &str) {
-        Self::download_component(self, DownloadSource::CI, filename, prefix, commit, "ci-rustc")
+    fn download_ci_component(&self, filename: String, prefix: &str, commit_with_assertions: &str) {
+        Self::download_component(
+            self,
+            DownloadSource::CI,
+            filename,
+            prefix,
+            commit_with_assertions,
+            "ci-rustc",
+        )
     }
 
     fn download_component(
@@ -516,11 +527,18 @@ impl Config {
         let bin_root = self.out.join(self.build.triple).join(destination);
         let tarball = cache_dir.join(&filename);
         let (base_url, url, should_verify) = match mode {
-            DownloadSource::CI => (
-                self.stage0_metadata.config.artifacts_server.clone(),
-                format!("{key}/{filename}"),
-                false,
-            ),
+            DownloadSource::CI => {
+                let dist_server = if self.llvm_assertions {
+                    self.stage0_metadata.config.artifacts_with_llvm_assertions_server.clone()
+                } else {
+                    self.stage0_metadata.config.artifacts_server.clone()
+                };
+                let url = format!(
+                    "{}/{filename}",
+                    key.strip_suffix(&format!("-{}", self.llvm_assertions)).unwrap()
+                );
+                (dist_server, url, false)
+            }
             DownloadSource::Dist => {
                 let dist_server = env::var("RUSTUP_DIST_SERVER")
                     .unwrap_or(self.stage0_metadata.config.dist_server.to_string());

src/bootstrap/lib.rs

@@ -822,11 +822,6 @@ impl Build {
         self.stage_out(compiler, mode).join(&*target.triple).join(self.cargo_dir())
     }
 
-    /// Directory where the extracted `rustc-dev` component is stored.
-    fn ci_rustc_dir(&self, target: TargetSelection) -> PathBuf {
-        self.out.join(&*target.triple).join("ci-rustc")
-    }
-
     /// Root output directory for LLVM compiled for `target`
     ///
     /// Note that if LLVM is configured externally then the directory returned

src/bootstrap/test.rs

@@ -2348,7 +2348,7 @@ impl Step for Crate {
                 // `std_cargo` actually does the wrong thing: it passes `--sysroot build/host/stage2`,
                 // but we want to use the force-recompile std we just built in `build/host/stage2-test-sysroot`.
                 // Override it.
-                if builder.download_rustc() {
+                if builder.download_rustc() && compiler.stage > 0 {
                     let sysroot = builder
                         .out
                         .join(compiler.host.triple)

src/doc/style-guide/src/expressions.md

@@ -451,12 +451,11 @@ foo(
 
 #### Multi-line elements
 
-If any element in a chain is formatted across multiple lines, then that element
-and any later elements must be on their own line. Earlier elements may be kept
-on a single line. E.g.,
+If any element in a chain is formatted across multiple lines, put that element
+and any later elements on their own lines.
 
 ```rust
-a.b.c()?.d
+a.b.c()?
     .foo(
         an_expr,
         another_expr,

src/tools/lint-docs/src/groups.rs

@@ -39,7 +39,6 @@ impl<'a> LintExtractor<'a> {
     fn collect_groups(&self) -> Result<LintGroups, Box<dyn Error>> {
         let mut result = BTreeMap::new();
         let mut cmd = Command::new(self.rustc_path);
-        cmd.env_remove("LD_LIBRARY_PATH");
         cmd.arg("-Whelp");
         let output = cmd.output().map_err(|e| format!("failed to run command {:?}\n{}", cmd, e))?;
         if !output.status.success() {