Auto merge of #107928 - matthiaskrgr:rollup-qnn380r, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #107657 (Add only modified subcommand for compiletest)
 - #107864 (rustdoc: clean up `write!` calls with less stuttering)
 - #107873 (Emit JSON output for the building of bootstrap itself)
 - #107895 (remove redundant clones)
 - #107897 (Reexported macros docs)
 - #107909 (rustdoc: remove redundant `if s.is_empty()` from `find_testable_code`)
 - #107912 (rustdoc: Don't resolve link to field on different variant)

Failed merges:

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

Author: bors

Cargo.lock

@@ -895,6 +895,7 @@ dependencies = [
 name = "compiletest"
 version = "0.0.0"
 dependencies = [
+ "build_helper",
  "colored",
  "diff",
  "getopts",

compiler/rustc_codegen_ssa/src/back/archive.rs

@@ -203,7 +203,7 @@ impl<'a> ArchiveBuilder<'a> for ArArchiveBuilder<'a> {
             }
         }
 
-        self.src_archives.push((archive_path.to_owned(), archive_map));
+        self.src_archives.push((archive_path, archive_map));
         Ok(())
     }
 

compiler/rustc_log/src/lib.rs

@@ -92,7 +92,7 @@ pub fn init_env_logger(env: &str) -> Result<(), Error> {
             let fmt_layer = tracing_subscriber::fmt::layer()
                 .with_writer(io::stderr)
                 .without_time()
-                .event_format(BacktraceFormatter { backtrace_target: str.to_string() });
+                .event_format(BacktraceFormatter { backtrace_target: str });
             let subscriber = subscriber.with(fmt_layer);
             tracing::subscriber::set_global_default(subscriber).unwrap();
         }

compiler/rustc_parse_format/src/lib.rs

@@ -847,9 +847,7 @@ impl<'a> Parser<'a> {
                 0,
                 ParseError {
                     description: "expected format parameter to occur after `:`".to_owned(),
-                    note: Some(
-                        format!("`?` comes after `:`, try `{}:{}` instead", word, "?").to_owned(),
-                    ),
+                    note: Some(format!("`?` comes after `:`, try `{}:{}` instead", word, "?")),
                     label: "expected `?` to occur after `:`".to_owned(),
                     span: pos.to(pos),
                     secondary_label: None,

src/bootstrap/bootstrap.py

@@ -784,6 +784,8 @@ def build_bootstrap(self, color, verbose_count):
         if self.get_toml("metrics", "build"):
             args.append("--features")
             args.append("build-metrics")
+        if self.json_output:
+            args.append("--message-format=json")
         if color == "always":
             args.append("--color=always")
         elif color == "never":
@@ -841,6 +843,7 @@ def parse_args():
     parser.add_argument('--build')
     parser.add_argument('--color', choices=['always', 'never', 'auto'])
     parser.add_argument('--clean', action='store_true')
+    parser.add_argument('--json-output', action='store_true')
     parser.add_argument('-v', '--verbose', action='count', default=0)
 
     return parser.parse_known_args(sys.argv)[0]
@@ -852,6 +855,7 @@ def bootstrap(args):
     build.rust_root = os.path.abspath(os.path.join(__file__, '../../..'))
     build.verbose = args.verbose != 0
     build.clean = args.clean
+    build.json_output = args.json_output
 
     # Read from `--config`, then `RUST_BOOTSTRAP_CONFIG`, then `./config.toml`,
     # then `config.toml` in the root directory.

src/bootstrap/builder/tests.rs

@@ -557,6 +557,7 @@ mod dist {
             rustfix_coverage: false,
             pass: None,
             run: None,
+            only_modified: false,
         };
 
         let build = Build::new(config);
@@ -627,6 +628,7 @@ mod dist {
             rustfix_coverage: false,
             pass: None,
             run: None,
+            only_modified: false,
         };
         // Make sure rustfmt binary not being found isn't an error.
         config.channel = "beta".to_string();

src/bootstrap/flags.rs

@@ -124,6 +124,7 @@ pub enum Subcommand {
         fail_fast: bool,
         doc_tests: DocTests,
         rustfix_coverage: bool,
+        only_modified: bool,
     },
     Bench {
         paths: Vec<PathBuf>,
@@ -301,6 +302,7 @@ To learn more about a subcommand, run `./x.py <subcommand> -h`",
                 opts.optflag("", "doc", "only run doc tests");
                 opts.optflag("", "bless", "update all stderr/stdout files of failing ui tests");
                 opts.optflag("", "force-rerun", "rerun tests even if the inputs are unchanged");
+                opts.optflag("", "only-modified", "only run tests that result has been changed");
                 opts.optopt(
                     "",
                     "compare-mode",
@@ -598,6 +600,7 @@ Arguments:
                 rustc_args: matches.opt_strs("rustc-args"),
                 fail_fast: !matches.opt_present("no-fail-fast"),
                 rustfix_coverage: matches.opt_present("rustfix-coverage"),
+                only_modified: matches.opt_present("only-modified"),
                 doc_tests: if matches.opt_present("doc") {
                     DocTests::Only
                 } else if matches.opt_present("no-doc") {
@@ -777,6 +780,13 @@ impl Subcommand {
         }
     }
 
+    pub fn only_modified(&self) -> bool {
+        match *self {
+            Subcommand::Test { only_modified, .. } => only_modified,
+            _ => false,
+        }
+    }
+
     pub fn force_rerun(&self) -> bool {
         match *self {
             Subcommand::Test { force_rerun, .. } => force_rerun,

src/bootstrap/format.rs

@@ -1,8 +1,8 @@
 //! Runs rustfmt on the repository.
 
 use crate::builder::Builder;
-use crate::util::{output, output_result, program_out_of_date, t};
-use build_helper::git::updated_master_branch;
+use crate::util::{output, program_out_of_date, t};
+use build_helper::git::get_git_modified_files;
 use ignore::WalkBuilder;
 use std::collections::VecDeque;
 use std::path::{Path, PathBuf};
@@ -80,23 +80,11 @@ fn update_rustfmt_version(build: &Builder<'_>) {
 ///
 /// Returns `None` if all files should be formatted.
 fn get_modified_rs_files(build: &Builder<'_>) -> Result<Option<Vec<String>>, String> {
-    let Ok(updated_master) = updated_master_branch(Some(&build.config.src)) else { return Ok(None); };
-
     if !verify_rustfmt_version(build) {
         return Ok(None);
     }
 
-    let merge_base =
-        output_result(build.config.git().arg("merge-base").arg(&updated_master).arg("HEAD"))?;
-    Ok(Some(
-        output_result(
-            build.config.git().arg("diff-index").arg("--name-only").arg(merge_base.trim()),
-        )?
-        .lines()
-        .map(|s| s.trim().to_owned())
-        .filter(|f| Path::new(f).extension().map_or(false, |ext| ext == "rs"))
-        .collect(),
-    ))
+    get_git_modified_files(Some(&build.config.src), &vec!["rs"])
 }
 
 #[derive(serde::Deserialize)]

src/bootstrap/test.rs

@@ -1510,6 +1510,10 @@ note: if you're sure you want to do this, please open an issue as to why. In the
         if builder.config.rust_optimize_tests {
             cmd.arg("--optimize-tests");
         }
+        if builder.config.cmd.only_modified() {
+            cmd.arg("--only-modified");
+        }
+
         let mut flags = if is_rustdoc { Vec::new() } else { vec!["-Crpath".to_string()] };
         flags.push(format!("-Cdebuginfo={}", builder.config.rust_debuginfo_level_tests));
         flags.extend(builder.config.cmd.rustc_args().iter().map(|s| s.to_string()));

src/librustdoc/clean/mod.rs

@@ -2209,10 +2209,12 @@ fn clean_maybe_renamed_item<'tcx>(
         };
 
         let mut extra_attrs = Vec::new();
-        if let Some(hir::Node::Item(use_node)) =
-            import_id.and_then(|def_id| cx.tcx.hir().find_by_def_id(def_id))
+        if let Some(import_id) = import_id &&
+            let Some(hir::Node::Item(use_node)) = cx.tcx.hir().find_by_def_id(import_id)
         {
-            // We get all the various imports' attributes.
+            // First, we add the attributes from the current import.
+            extra_attrs.extend_from_slice(inline::load_attrs(cx, import_id.to_def_id()));
+            // Then we get all the various imports' attributes.
             get_all_import_attributes(use_node, cx.tcx, item.owner_id.def_id, &mut extra_attrs);
         }
 

src/librustdoc/html/markdown.rs

@@ -740,11 +740,7 @@ pub(crate) fn find_testable_code<T: doctest::Tester>(
             }
             Event::Text(ref s) if register_header.is_some() => {
                 let level = register_header.unwrap();
-                if s.is_empty() {
-                    tests.register_header("", level);
-                } else {
-                    tests.register_header(s, level);
-                }
+                tests.register_header(s, level);
                 register_header = None;
             }
             _ => {}

src/librustdoc/html/render/print_item.rs

@@ -1081,10 +1081,10 @@ fn item_typedef(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, t: &clea
     fn write_content(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Typedef) {
         wrap_item(w, |w| {
             render_attributes_in_pre(w, it, "");
-            write!(w, "{}", visibility_print_with_space(it.visibility(cx.tcx()), it.item_id, cx));
             write!(
                 w,
-                "type {}{}{where_clause} = {type_};",
+                "{}type {}{}{where_clause} = {type_};",
+                visibility_print_with_space(it.visibility(cx.tcx()), it.item_id, cx),
                 it.name.unwrap(),
                 t.generics.print(cx),
                 where_clause = print_where_clause(&t.generics, cx, 0, Ending::Newline),
@@ -1138,13 +1138,11 @@ fn item_union(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, s: &clean:
                      <a href=\"#{id}\" class=\"anchor field\">§</a>\
                      <code>{name}: {ty}</code>\
                  </span>",
-                id = id,
-                name = name,
                 shortty = ItemType::StructField,
                 ty = ty.print(cx),
             );
             if let Some(stability_class) = field.stability_class(cx.tcx()) {
-                write!(w, "<span class=\"stab {stab}\"></span>", stab = stability_class);
+                write!(w, "<span class=\"stab {stability_class}\"></span>");
             }
             document(w, cx, field, Some(it), HeadingOffset::H3);
         }
@@ -1242,7 +1240,6 @@ fn item_enum(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, e: &clean::
                 w,
                 "<section id=\"{id}\" class=\"variant\">\
                     <a href=\"#{id}\" class=\"anchor\">§</a>",
-                id = id,
             );
             render_stability_since_raw_with_extra(
                 w,
@@ -1280,8 +1277,11 @@ fn item_enum(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, e: &clean::
             if let Some((heading, fields)) = heading_and_fields {
                 let variant_id =
                     cx.derive_id(format!("{}.{}.fields", ItemType::Variant, variant.name.unwrap()));
-                write!(w, "<div class=\"sub-variant\" id=\"{id}\">", id = variant_id);
-                write!(w, "<h4>{heading}</h4>", heading = heading);
+                write!(
+                    w,
+                    "<div class=\"sub-variant\" id=\"{variant_id}\">\
+                        <h4>{heading}</h4>",
+                );
                 document_non_exhaustive(w, variant);
                 for field in fields {
                     match *field.kind {
@@ -1299,7 +1299,6 @@ fn item_enum(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, e: &clean::
                                      <a href=\"#{id}\" class=\"anchor field\">§</a>\
                                      <code>{f}: {t}</code>\
                                  </span>",
-                                id = id,
                                 f = field.name.unwrap(),
                                 t = ty.print(cx)
                             );
@@ -1450,11 +1449,9 @@ fn item_struct(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, s: &clean
                     w,
                     "<span id=\"{id}\" class=\"{item_type} small-section-header\">\
                          <a href=\"#{id}\" class=\"anchor field\">§</a>\
-                         <code>{name}: {ty}</code>\
+                         <code>{field_name}: {ty}</code>\
                      </span>",
                     item_type = ItemType::StructField,
-                    id = id,
-                    name = field_name,
                     ty = ty.print(cx)
                 );
                 document(w, cx, field, Some(it), HeadingOffset::H3);
@@ -1840,8 +1837,8 @@ fn document_type_layout(w: &mut Buffer, cx: &Context<'_>, ty_def_id: DefId) {
         if layout.abi.is_unsized() {
             write!(w, "(unsized)");
         } else {
-            let bytes = layout.size.bytes() - tag_size;
-            write!(w, "{size} byte{pl}", size = bytes, pl = if bytes == 1 { "" } else { "s" },);
+            let size = layout.size.bytes() - tag_size;
+            write!(w, "{size} byte{pl}", pl = if size == 1 { "" } else { "s" },);
         }
     }
 
@@ -1896,7 +1893,7 @@ fn document_type_layout(w: &mut Buffer, cx: &Context<'_>, ty_def_id: DefId) {
 
                     for (index, layout) in variants.iter_enumerated() {
                         let name = adt.variant(index).name;
-                        write!(w, "<li><code>{name}</code>: ", name = name);
+                        write!(w, "<li><code>{name}</code>: ");
                         write_size_of_layout(w, layout, tag_size);
                         writeln!(w, "</li>");
                     }

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -297,7 +297,8 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
         match ty_res {
             Res::Def(DefKind::Enum, did) => match tcx.type_of(did).kind() {
                 ty::Adt(def, _) if def.is_enum() => {
-                    if let Some(field) = def.all_fields().find(|f| f.name == variant_field_name) {
+                    if let Some(variant) = def.variants().iter().find(|v| v.name == variant_name)
+                        && let Some(field) = variant.fields.iter().find(|f| f.name == variant_field_name) {
                         Ok((ty_res, field.did))
                     } else {
                         Err(UnresolvedPath {
@@ -1716,15 +1717,35 @@ fn resolution_failure(
 
                     // Otherwise, it must be an associated item or variant
                     let res = partial_res.expect("None case was handled by `last_found_module`");
-                    let kind = match res {
-                        Res::Def(kind, _) => Some(kind),
+                    let kind_did = match res {
+                        Res::Def(kind, did) => Some((kind, did)),
                         Res::Primitive(_) => None,
                     };
-                    let path_description = if let Some(kind) = kind {
+                    let is_struct_variant = |did| {
+                        if let ty::Adt(def, _) = tcx.type_of(did).kind()
+                        && def.is_enum()
+                        && let Some(variant) = def.variants().iter().find(|v| v.name == res.name(tcx)) {
+                            // ctor is `None` if variant is a struct
+                            variant.ctor.is_none()
+                        } else {
+                            false
+                        }
+                    };
+                    let path_description = if let Some((kind, did)) = kind_did {
                         match kind {
                             Mod | ForeignMod => "inner item",
                             Struct => "field or associated item",
                             Enum | Union => "variant or associated item",
+                            Variant if is_struct_variant(did) => {
+                                let variant = res.name(tcx);
+                                let note = format!("variant `{variant}` has no such field");
+                                if let Some(span) = sp {
+                                    diag.span_label(span, &note);
+                                } else {
+                                    diag.note(&note);
+                                }
+                                return;
+                            }
                             Variant
                             | Field
                             | Closure

src/librustdoc/visit_ast.rs

@@ -378,7 +378,7 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
                 let nonexported = !tcx.has_attr(def_id, sym::macro_export);
 
                 if is_macro_2_0 || nonexported || self.inlining {
-                    self.add_to_current_mod(item, renamed, None);
+                    self.add_to_current_mod(item, renamed, import_id);
                 }
             }
             hir::ItemKind::Mod(ref m) => {