Rollup of 5 pull requests

compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -333,7 +333,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                 let local_decl = &self.body.local_decls[local];
                 assert_eq!(local_decl.mutability, Mutability::Not);
 
-                err.span_label(span, format!("cannot {ACT}", ACT = act));
+                err.span_label(span, format!("cannot {act}"));
                 err.span_suggestion(
                     local_decl.source_info.span,
                     "consider changing this to be mutable",
@@ -357,7 +357,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
 
                 let captured_place = &self.upvars[upvar_index.index()].place;
 
-                err.span_label(span, format!("cannot {ACT}", ACT = act));
+                err.span_label(span, format!("cannot {act}"));
 
                 let upvar_hir_id = captured_place.get_root_variable();
 
@@ -397,7 +397,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                     .span_to_snippet(span)
                     .map_or(false, |snippet| snippet.starts_with("&mut ")) =>
             {
-                err.span_label(span, format!("cannot {ACT}", ACT = act));
+                err.span_label(span, format!("cannot {act}"));
                 err.span_suggestion(
                     span,
                     "try removing `&mut` here",
@@ -409,7 +409,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
             PlaceRef { local, projection: [ProjectionElem::Deref] }
                 if self.body.local_decls[local].is_ref_for_guard() =>
             {
-                err.span_label(span, format!("cannot {ACT}", ACT = act));
+                err.span_label(span, format!("cannot {act}"));
                 err.note(
                     "variables bound in patterns are immutable until the end of the pattern guard",
                 );
@@ -537,7 +537,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                             Some((true, err_help_span, suggested_code)) => {
                                 let (is_trait_sig, local_trait) = self.is_error_in_trait(local);
                                 if !is_trait_sig {
-                                    err.span_suggestion(
+                                    err.span_suggestion_verbose(
                                         err_help_span,
                                         &format!(
                                             "consider changing this to be a mutable {pointer_desc}"
@@ -546,7 +546,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                                         Applicability::MachineApplicable,
                                     );
                                 } else if let Some(x) = local_trait {
-                                    err.span_suggestion(
+                                    err.span_suggestion_verbose(
                                         x,
                                         &format!(
                                             "consider changing that to be a mutable {pointer_desc}"
@@ -569,24 +569,15 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                         err.span_label(
                             span,
                             format!(
-                                "`{NAME}` is a `{SIGIL}` {DESC}, \
-                                so the data it refers to cannot be {ACTED_ON}",
-                                NAME = name,
-                                SIGIL = pointer_sigil,
-                                DESC = pointer_desc,
-                                ACTED_ON = acted_on
+                                "`{name}` is a `{pointer_sigil}` {pointer_desc}, \
+                                 so the data it refers to cannot be {acted_on}",
                             ),
                         );
                     }
                     _ => {
                         err.span_label(
                             span,
-                            format!(
-                                "cannot {ACT} through `{SIGIL}` {DESC}",
-                                ACT = act,
-                                SIGIL = pointer_sigil,
-                                DESC = pointer_desc
-                            ),
+                            format!("cannot {act} through `{pointer_sigil}` {pointer_desc}"),
                         );
                     }
                 }
@@ -605,13 +596,13 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                     Some(BorrowedContentSource::OverloadedDeref(ty)) => {
                         err.help(&format!(
                             "trait `DerefMut` is required to modify through a dereference, \
-                                but it is not implemented for `{ty}`",
+                             but it is not implemented for `{ty}`",
                         ));
                     }
                     Some(BorrowedContentSource::OverloadedIndex(ty)) => {
                         err.help(&format!(
                             "trait `IndexMut` is required to modify indexed content, \
-                                but it is not implemented for `{ty}`",
+                             but it is not implemented for `{ty}`",
                         ));
                         self.suggest_map_index_mut_alternatives(ty, &mut err, span);
                     }
@@ -620,7 +611,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
             }
 
             _ => {
-                err.span_label(span, format!("cannot {ACT}", ACT = act));
+                err.span_label(span, format!("cannot {act}"));
             }
         }
 

compiler/rustc_error_codes/src/error_codes.rs

@@ -598,7 +598,7 @@ E0791: include_str!("./error_codes/E0791.md"),
 //  E0421, // merged into 531
 //  E0427, // merged into 530
 //  E0456, // plugin `..` is not available for triple `..`
-    E0465, // multiple .. candidates for `..` found
+//  E0465, // removed: merged with E0464
 //  E0467, // removed
 //  E0470, // removed
 //  E0471, // constant evaluation error (in pattern)

compiler/rustc_error_messages/locales/en-US/metadata.ftl

@@ -196,11 +196,7 @@ metadata_extern_location_not_file =
     extern location for {$crate_name} is not a file: {$location}
 
 metadata_multiple_candidates =
-    multiple {$flavor} candidates for `{$crate_name}` found
-
-metadata_multiple_matching_crates =
-    multiple matching crates for `{$crate_name}`
-    .note = candidates:{$candidates}
+    multiple candidates for `{$flavor}` dependency `{$crate_name}` found
 
 metadata_symbol_conflicts_current =
     the current crate is indistinguishable from one of its dependencies: it has the same crate-name `{$crate_name}` and was compiled with the same `-C metadata` arguments. This will result in symbol conflicts between the two.

compiler/rustc_metadata/src/errors.rs

@@ -486,25 +486,15 @@ impl IntoDiagnostic<'_> for MultipleCandidates {
         let mut diag = handler.struct_err(rustc_errors::fluent::metadata_multiple_candidates);
         diag.set_arg("crate_name", self.crate_name);
         diag.set_arg("flavor", self.flavor);
-        diag.code(error_code!(E0465));
+        diag.code(error_code!(E0464));
         diag.set_span(self.span);
         for (i, candidate) in self.candidates.iter().enumerate() {
-            diag.span_note(self.span, &format!("candidate #{}: {}", i + 1, candidate.display()));
+            diag.note(&format!("candidate #{}: {}", i + 1, candidate.display()));
         }
         diag
     }
 }
 
-#[derive(Diagnostic)]
-#[diag(metadata_multiple_matching_crates, code = "E0464")]
-#[note]
-pub struct MultipleMatchingCrates {
-    #[primary_span]
-    pub span: Span,
-    pub crate_name: Symbol,
-    pub candidates: String,
-}
-
 #[derive(Diagnostic)]
 #[diag(metadata_symbol_conflicts_current, code = "E0519")]
 pub struct SymbolConflictsCurrent {

compiler/rustc_metadata/src/locator.rs

@@ -216,9 +216,8 @@ use crate::creader::Library;
 use crate::errors::{
     CannotFindCrate, CrateLocationUnknownType, DlError, ExternLocationNotExist,
     ExternLocationNotFile, FoundStaticlib, IncompatibleRustc, InvalidMetadataFiles,
-    LibFilenameForm, MultipleCandidates, MultipleMatchingCrates, NewerCrateVersion,
-    NoCrateWithTriple, NoDylibPlugin, NonAsciiName, StableCrateIdCollision, SymbolConflictsCurrent,
-    SymbolConflictsOthers,
+    LibFilenameForm, MultipleCandidates, NewerCrateVersion, NoCrateWithTriple, NoDylibPlugin,
+    NonAsciiName, StableCrateIdCollision, SymbolConflictsCurrent, SymbolConflictsOthers,
 };
 use crate::rmeta::{rustc_version, MetadataBlob, METADATA_HEADER};
 
@@ -240,7 +239,6 @@ use rustc_target::spec::{Target, TargetTriple};
 
 use snap::read::FrameDecoder;
 use std::borrow::Cow;
-use std::fmt::Write as _;
 use std::io::{Read, Result as IoResult, Write};
 use std::path::{Path, PathBuf};
 use std::{cmp, fmt, fs};
@@ -482,7 +480,22 @@ impl<'a> CrateLocator<'a> {
         match libraries.len() {
             0 => Ok(None),
             1 => Ok(Some(libraries.into_iter().next().unwrap().1)),
-            _ => Err(CrateError::MultipleMatchingCrates(self.crate_name, libraries)),
+            _ => {
+                let mut libraries: Vec<_> = libraries.into_values().collect();
+
+                libraries.sort_by_cached_key(|lib| lib.source.paths().next().unwrap().clone());
+                let candidates = libraries
+                    .iter()
+                    .map(|lib| lib.source.paths().next().unwrap().clone())
+                    .collect::<Vec<_>>();
+
+                Err(CrateError::MultipleCandidates(
+                    self.crate_name,
+                    // these are the same for all candidates
+                    get_flavor_from_path(candidates.first().unwrap()),
+                    candidates,
+                ))
+            }
         }
     }
 
@@ -882,17 +895,22 @@ pub fn list_file_metadata(
     metadata_loader: &dyn MetadataLoader,
     out: &mut dyn Write,
 ) -> IoResult<()> {
+    let flavor = get_flavor_from_path(path);
+    match get_metadata_section(target, flavor, path, metadata_loader) {
+        Ok(metadata) => metadata.list_crate_metadata(out),
+        Err(msg) => write!(out, "{}\n", msg),
+    }
+}
+
+fn get_flavor_from_path(path: &Path) -> CrateFlavor {
     let filename = path.file_name().unwrap().to_str().unwrap();
-    let flavor = if filename.ends_with(".rlib") {
+
+    if filename.ends_with(".rlib") {
         CrateFlavor::Rlib
     } else if filename.ends_with(".rmeta") {
         CrateFlavor::Rmeta
     } else {
         CrateFlavor::Dylib
-    };
-    match get_metadata_section(target, flavor, path, metadata_loader) {
-        Ok(metadata) => metadata.list_crate_metadata(out),
-        Err(msg) => write!(out, "{}\n", msg),
     }
 }
 
@@ -931,7 +949,6 @@ pub(crate) enum CrateError {
     ExternLocationNotExist(Symbol, PathBuf),
     ExternLocationNotFile(Symbol, PathBuf),
     MultipleCandidates(Symbol, CrateFlavor, Vec<PathBuf>),
-    MultipleMatchingCrates(Symbol, FxHashMap<Svh, Library>),
     SymbolConflictsCurrent(Symbol),
     SymbolConflictsOthers(Symbol),
     StableCrateIdCollision(Symbol, Symbol),
@@ -972,37 +989,7 @@ impl CrateError {
                 sess.emit_err(ExternLocationNotFile { span, crate_name, location: &loc });
             }
             CrateError::MultipleCandidates(crate_name, flavor, candidates) => {
-                sess.emit_err(MultipleCandidates { span, flavor: flavor, crate_name, candidates });
-            }
-            CrateError::MultipleMatchingCrates(crate_name, libraries) => {
-                let mut libraries: Vec<_> = libraries.into_values().collect();
-                // Make ordering of candidates deterministic.
-                // This has to `clone()` to work around lifetime restrictions with `sort_by_key()`.
-                // `sort_by()` could be used instead, but this is in the error path,
-                // so the performance shouldn't matter.
-                libraries.sort_by_cached_key(|lib| lib.source.paths().next().unwrap().clone());
-                let candidates = libraries
-                    .iter()
-                    .map(|lib| {
-                        let crate_name = lib.metadata.get_root().name();
-                        let crate_name = crate_name.as_str();
-                        let mut paths = lib.source.paths();
-
-                        // This `unwrap()` should be okay because there has to be at least one
-                        // source file. `CrateSource`'s docs confirm that too.
-                        let mut s = format!(
-                            "\ncrate `{}`: {}",
-                            crate_name,
-                            paths.next().unwrap().display()
-                        );
-                        let padding = 8 + crate_name.len();
-                        for path in paths {
-                            write!(s, "\n{:>padding$}", path.display(), padding = padding).unwrap();
-                        }
-                        s
-                    })
-                    .collect::<String>();
-                sess.emit_err(MultipleMatchingCrates { span, crate_name, candidates });
+                sess.emit_err(MultipleCandidates { span, crate_name, flavor, candidates });
             }
             CrateError::SymbolConflictsCurrent(root_name) => {
                 sess.emit_err(SymbolConflictsCurrent { span, crate_name: root_name });

compiler/rustc_symbol_mangling/src/typeid/typeid_itanium_cxx_abi.rs

@@ -164,6 +164,7 @@ fn encode_const<'tcx>(
 
 /// Encodes a FnSig using the Itanium C++ ABI with vendor extended type qualifiers and types for
 /// Rust types that are not used at the FFI boundary.
+#[instrument(level = "trace", skip(tcx, dict))]
 fn encode_fnsig<'tcx>(
     tcx: TyCtxt<'tcx>,
     fn_sig: &FnSig<'tcx>,
@@ -653,6 +654,7 @@ fn encode_ty<'tcx>(
 // Transforms a ty:Ty for being encoded and used in the substitution dictionary. It transforms all
 // c_void types into unit types unconditionally, and generalizes all pointers if
 // TransformTyOptions::GENERALIZE_POINTERS option is set.
+#[instrument(level = "trace", skip(tcx))]
 fn transform_ty<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, options: TransformTyOptions) -> Ty<'tcx> {
     let mut ty = ty;
 
@@ -698,7 +700,7 @@ fn transform_ty<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, options: TransformTyOptio
                     !is_zst
                 });
                 if let Some(field) = field {
-                    let ty0 = tcx.type_of(field.did);
+                    let ty0 = tcx.bound_type_of(field.did).subst(tcx, substs);
                     // Generalize any repr(transparent) user-defined type that is either a pointer
                     // or reference, and either references itself or any other type that contains or
                     // references itself, to avoid a reference cycle.
@@ -827,6 +829,7 @@ fn transform_substs<'tcx>(
 
 /// Returns a type metadata identifier for the specified FnAbi using the Itanium C++ ABI with vendor
 /// extended type qualifiers and types for Rust types that are not used at the FFI boundary.
+#[instrument(level = "trace", skip(tcx))]
 pub fn typeid_for_fnabi<'tcx>(
     tcx: TyCtxt<'tcx>,
     fn_abi: &FnAbi<'tcx, Ty<'tcx>>,

src/bootstrap/builder.rs

@@ -97,18 +97,36 @@ impl RunConfig<'_> {
         self.builder.build.build
     }
 
-    /// Return a `-p=x -p=y` string suitable for passing to a cargo invocation.
+    /// Return a list of crate names selected by `run.paths`.
     pub fn cargo_crates_in_set(&self) -> Interned<Vec<String>> {
         let mut crates = Vec::new();
         for krate in &self.paths {
             let path = krate.assert_single_path();
             let crate_name = self.builder.crate_paths[&path.path];
-            crates.push(format!("-p={crate_name}"));
+            crates.push(crate_name.to_string());
         }
         INTERNER.intern_list(crates)
     }
 }
 
+/// A description of the crates in this set, suitable for passing to `builder.info`.
+///
+/// `crates` should be generated by [`RunConfig::cargo_crates_in_set`].
+pub fn crate_description(crates: &[impl AsRef<str>]) -> String {
+    if crates.is_empty() {
+        return "".into();
+    }
+
+    let mut descr = String::from(" {");
+    descr.push_str(crates[0].as_ref());
+    for krate in &crates[1..] {
+        descr.push_str(", ");
+        descr.push_str(krate.as_ref());
+    }
+    descr.push('}');
+    descr
+}
+
 struct StepDescription {
     default: bool,
     only_hosts: bool,