Merge branch 'rust-lang:master' into checked_ilog

Author: FedericoStra

Diff for: .gitignore

@@ -58,7 +58,6 @@ build/
 \#*
 \#*\#
 .#*
-rustc-ice-*.txt
 
 ## Tags
 tags

Diff for: compiler/rustc_ast/src/attr/mod.rs

@@ -99,6 +99,22 @@ impl Attribute {
         }
     }
 
+    pub fn path_matches(&self, name: &[Symbol]) -> bool {
+        match &self.kind {
+            AttrKind::Normal(normal) => {
+                normal.item.path.segments.len() == name.len()
+                    && normal
+                        .item
+                        .path
+                        .segments
+                        .iter()
+                        .zip(name)
+                        .all(|(s, n)| s.args.is_none() && s.ident.name == *n)
+            }
+            AttrKind::DocComment(..) => false,
+        }
+    }
+
     pub fn is_word(&self) -> bool {
         if let AttrKind::Normal(normal) = &self.kind {
             matches!(normal.item.args, AttrArgs::Empty)

Diff for: compiler/rustc_builtin_macros/src/deriving/generic/mod.rs

@@ -88,7 +88,7 @@
 //!
 //! When generating the `expr` for the `A` impl, the `SubstructureFields` is
 //!
-//! ```{.text}
+//! ```text
 //! Struct(vec![FieldInfo {
 //!            span: <span of x>
 //!            name: Some(<ident of x>),
@@ -99,7 +99,7 @@
 //!
 //! For the `B` impl, called with `B(a)` and `B(b)`,
 //!
-//! ```{.text}
+//! ```text
 //! Struct(vec![FieldInfo {
 //!           span: <span of `i32`>,
 //!           name: None,
@@ -113,7 +113,7 @@
 //! When generating the `expr` for a call with `self == C0(a)` and `other
 //! == C0(b)`, the SubstructureFields is
 //!
-//! ```{.text}
+//! ```text
 //! EnumMatching(0, <ast::Variant for C0>,
 //!              vec![FieldInfo {
 //!                 span: <span of i32>
@@ -125,7 +125,7 @@
 //!
 //! For `C1 {x}` and `C1 {x}`,
 //!
-//! ```{.text}
+//! ```text
 //! EnumMatching(1, <ast::Variant for C1>,
 //!              vec![FieldInfo {
 //!                 span: <span of x>
@@ -137,7 +137,7 @@
 //!
 //! For the tags,
 //!
-//! ```{.text}
+//! ```text
 //! EnumTag(
 //!     &[<ident of self tag>, <ident of other tag>], <expr to combine with>)
 //! ```
@@ -149,7 +149,7 @@
 //!
 //! A static method on the types above would result in,
 //!
-//! ```{.text}
+//! ```text
 //! StaticStruct(<ast::VariantData of A>, Named(vec![(<ident of x>, <span of x>)]))
 //!
 //! StaticStruct(<ast::VariantData of B>, Unnamed(vec![<span of x>]))

Diff for: compiler/rustc_const_eval/src/interpret/operand.rs

@@ -136,7 +136,11 @@ impl<Prov: Provenance> std::fmt::Display for ImmTy<'_, Prov> {
 
 impl<Prov: Provenance> std::fmt::Debug for ImmTy<'_, Prov> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("ImmTy").field("imm", &self.imm).field("ty", &self.layout.ty).finish()
+        // Printing `layout` results in too much noise; just print a nice version of the type.
+        f.debug_struct("ImmTy")
+            .field("imm", &self.imm)
+            .field("ty", &format_args!("{}", self.layout.ty))
+            .finish()
     }
 }
 
@@ -305,7 +309,11 @@ pub struct OpTy<'tcx, Prov: Provenance = AllocId> {
 
 impl<Prov: Provenance> std::fmt::Debug for OpTy<'_, Prov> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("OpTy").field("op", &self.op).field("ty", &self.layout.ty).finish()
+        // Printing `layout` results in too much noise; just print a nice version of the type.
+        f.debug_struct("OpTy")
+            .field("op", &self.op)
+            .field("ty", &format_args!("{}", self.layout.ty))
+            .finish()
     }
 }
 

Diff for: compiler/rustc_const_eval/src/interpret/place.rs

@@ -117,9 +117,10 @@ pub struct MPlaceTy<'tcx, Prov: Provenance = AllocId> {
 
 impl<Prov: Provenance> std::fmt::Debug for MPlaceTy<'_, Prov> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        // Printing `layout` results in too much noise; just print a nice version of the type.
         f.debug_struct("MPlaceTy")
             .field("mplace", &self.mplace)
-            .field("ty", &self.layout.ty)
+            .field("ty", &format_args!("{}", self.layout.ty))
             .finish()
     }
 }
@@ -237,7 +238,11 @@ pub struct PlaceTy<'tcx, Prov: Provenance = AllocId> {
 
 impl<Prov: Provenance> std::fmt::Debug for PlaceTy<'_, Prov> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("PlaceTy").field("place", &self.place).field("ty", &self.layout.ty).finish()
+        // Printing `layout` results in too much noise; just print a nice version of the type.
+        f.debug_struct("PlaceTy")
+            .field("place", &self.place)
+            .field("ty", &format_args!("{}", self.layout.ty))
+            .finish()
     }
 }
 

Diff for: compiler/rustc_feature/src/active.rs

@@ -401,6 +401,8 @@ declare_features! (
     /// Allows function attribute `#[coverage(on/off)]`, to control coverage
     /// instrumentation of that function.
     (active, coverage_attribute, "CURRENT_RUSTC_VERSION", Some(84605), None),
+    /// Allows users to provide classes for fenced code block using `class:classname`.
+    (active, custom_code_classes_in_docs, "CURRENT_RUSTC_VERSION", Some(79483), None),
     /// Allows non-builtin attributes in inner attribute position.
     (active, custom_inner_attributes, "1.30.0", Some(54726), None),
     /// Allows custom test frameworks with `#![test_runner]` and `#[test_case]`.
@@ -414,7 +416,7 @@ declare_features! (
     /// Allows having using `suggestion` in the `#[deprecated]` attribute.
     (active, deprecated_suggestion, "1.61.0", Some(94785), None),
     /// Allows using the `#[diagnostic]` attribute tool namespace
-    (active, diagnostic_namespace, "1.73.0", Some(94785), None),
+    (active, diagnostic_namespace, "1.73.0", Some(111996), None),
     /// Controls errors in trait implementations.
     (active, do_not_recommend, "1.67.0", Some(51992), None),
     /// Tells rustdoc to automatically generate `#[doc(cfg(...))]`.

Diff for: compiler/rustc_hir_analysis/src/lib.rs

@@ -117,7 +117,7 @@ use rustc_hir::def::DefKind;
 fluent_messages! { "../messages.ftl" }
 
 fn require_c_abi_if_c_variadic(tcx: TyCtxt<'_>, decl: &hir::FnDecl<'_>, abi: Abi, span: Span) {
-    const CONVENTIONS_UNSTABLE: &str = "`C`, `cdecl`, `win64`, `sysv64` or `efiapi`";
+    const CONVENTIONS_UNSTABLE: &str = "`C`, `cdecl`, `aapcs`, `win64`, `sysv64` or `efiapi`";
     const CONVENTIONS_STABLE: &str = "`C` or `cdecl`";
     const UNSTABLE_EXPLAIN: &str =
         "using calling conventions other than `C` or `cdecl` for varargs functions is unstable";

Diff for: compiler/rustc_interface/src/util.rs

@@ -568,6 +568,13 @@ pub fn build_output_filenames(attrs: &[ast::Attribute], sess: &Session) -> Outpu
     ) {
         sess.emit_fatal(errors::MultipleOutputTypesToStdout);
     }
+
+    let crate_name = sess
+        .opts
+        .crate_name
+        .clone()
+        .or_else(|| rustc_attr::find_crate_name(attrs).map(|n| n.to_string()));
+
     match sess.io.output_file {
         None => {
             // "-" as input file will cause the parser to read from stdin so we
@@ -576,15 +583,11 @@ pub fn build_output_filenames(attrs: &[ast::Attribute], sess: &Session) -> Outpu
             let dirpath = sess.io.output_dir.clone().unwrap_or_default();
 
             // If a crate name is present, we use it as the link name
-            let stem = sess
-                .opts
-                .crate_name
-                .clone()
-                .or_else(|| rustc_attr::find_crate_name(attrs).map(|n| n.to_string()))
-                .unwrap_or_else(|| sess.io.input.filestem().to_owned());
+            let stem = crate_name.clone().unwrap_or_else(|| sess.io.input.filestem().to_owned());
 
             OutputFilenames::new(
                 dirpath,
+                crate_name.unwrap_or_else(|| stem.replace('-', "_")),
                 stem,
                 None,
                 sess.io.temps_dir.clone(),
@@ -609,9 +612,12 @@ pub fn build_output_filenames(attrs: &[ast::Attribute], sess: &Session) -> Outpu
                 sess.emit_warning(errors::IgnoringOutDir);
             }
 
+            let out_filestem =
+                out_file.filestem().unwrap_or_default().to_str().unwrap().to_string();
             OutputFilenames::new(
                 out_file.parent().unwrap_or_else(|| Path::new("")).to_path_buf(),
-                out_file.filestem().unwrap_or_default().to_str().unwrap().to_string(),
+                crate_name.unwrap_or_else(|| out_filestem.replace('-', "_")),
+                out_filestem,
                 ofile,
                 sess.io.temps_dir.clone(),
                 sess.opts.cg.extra_filename.clone(),

Diff for: compiler/rustc_lint_defs/src/builtin.rs

@@ -3405,8 +3405,8 @@ declare_lint_pass! {
         UNFULFILLED_LINT_EXPECTATIONS,
         UNINHABITED_STATIC,
         UNKNOWN_CRATE_TYPES,
-        UNKNOWN_DIAGNOSTIC_ATTRIBUTES,
         UNKNOWN_LINTS,
+        UNKNOWN_OR_MALFORMED_DIAGNOSTIC_ATTRIBUTES,
         UNNAMEABLE_TEST_ITEMS,
         UNNAMEABLE_TYPES,
         UNREACHABLE_CODE,
@@ -4420,7 +4420,8 @@ declare_lint! {
 }
 
 declare_lint! {
-    /// The `unknown_diagnostic_attributes` lint detects unrecognized diagnostic attributes.
+    /// The `unknown_or_malformed_diagnostic_attributes` lint detects unrecognized or otherwise malformed
+    /// diagnostic attributes.
     ///
     /// ### Example
     ///
@@ -4432,15 +4433,17 @@ declare_lint! {
     ///
     /// {{produces}}
     ///
+    ///
     /// ### Explanation
     ///
     /// It is usually a mistake to specify a diagnostic attribute that does not exist. Check
     /// the spelling, and check the diagnostic attribute listing for the correct name. Also
     /// consider if you are using an old version of the compiler, and the attribute
     /// is only available in a newer version.
-    pub UNKNOWN_DIAGNOSTIC_ATTRIBUTES,
+    pub UNKNOWN_OR_MALFORMED_DIAGNOSTIC_ATTRIBUTES,
     Warn,
-    "unrecognized diagnostic attribute"
+    "unrecognized or malformed diagnostic attribute",
+    @feature_gate = sym::diagnostic_namespace;
 }
 
 declare_lint! {

Diff for: compiler/rustc_metadata/src/fs.rs

@@ -5,7 +5,6 @@ use crate::errors::{
 use crate::{encode_metadata, EncodedMetadata};
 
 use rustc_data_structures::temp_dir::MaybeTempDir;
-use rustc_hir::def_id::LOCAL_CRATE;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::config::{OutFileName, OutputType};
 use rustc_session::output::filename_for_metadata;
@@ -40,8 +39,7 @@ pub fn emit_wrapper_file(
 }
 
 pub fn encode_and_write_metadata(tcx: TyCtxt<'_>) -> (EncodedMetadata, bool) {
-    let crate_name = tcx.crate_name(LOCAL_CRATE);
-    let out_filename = filename_for_metadata(tcx.sess, crate_name, tcx.output_filenames(()));
+    let out_filename = filename_for_metadata(tcx.sess, tcx.output_filenames(()));
     // To avoid races with another rustc process scanning the output directory,
     // we need to write the file somewhere else and atomically move it to its
     // final destination, with an `fs::rename` call. In order for the rename to

Diff for: compiler/rustc_middle/src/query/mod.rs

@@ -1140,6 +1140,7 @@ rustc_queries! {
     query reachable_set(_: ()) -> &'tcx LocalDefIdSet {
         arena_cache
         desc { "reachability" }
+        cache_on_disk_if { true }
     }
 
     /// Per-body `region::ScopeTree`. The `DefId` should be the owner `DefId` for the body;

Diff for: compiler/rustc_middle/src/ty/mod.rs

@@ -2408,6 +2408,22 @@ impl<'tcx> TyCtxt<'tcx> {
         }
     }
 
+    pub fn get_attrs_by_path<'attr>(
+        self,
+        did: DefId,
+        attr: &'attr [Symbol],
+    ) -> impl Iterator<Item = &'tcx ast::Attribute> + 'attr
+    where
+        'tcx: 'attr,
+    {
+        let filter_fn = move |a: &&ast::Attribute| a.path_matches(&attr);
+        if let Some(did) = did.as_local() {
+            self.hir().attrs(self.hir().local_def_id_to_hir_id(did)).iter().filter(filter_fn)
+        } else {
+            self.item_attrs(did).iter().filter(filter_fn)
+        }
+    }
+
     pub fn get_attr(self, did: impl Into<DefId>, attr: Symbol) -> Option<&'tcx ast::Attribute> {
         if cfg!(debug_assertions) && !rustc_feature::is_valid_for_get_attr(attr) {
             let did: DefId = did.into();

Diff for: compiler/rustc_middle/src/ty/structural_impls.rs

@@ -18,6 +18,7 @@ use std::ops::ControlFlow;
 use std::rc::Rc;
 use std::sync::Arc;
 
+use super::print::PrettyPrinter;
 use super::{GenericArg, GenericArgKind, Region};
 
 impl fmt::Debug for ty::TraitDef {
@@ -343,14 +344,27 @@ impl<'tcx> DebugWithInfcx<TyCtxt<'tcx>> for ty::Const<'tcx> {
         this: OptWithInfcx<'_, TyCtxt<'tcx>, InfCtx, &Self>,
         f: &mut core::fmt::Formatter<'_>,
     ) -> core::fmt::Result {
-        // This reflects what `Const` looked liked before `Interned` was
-        // introduced. We print it like this to avoid having to update expected
-        // output in a lot of tests.
+        // If this is a value, we spend some effort to make it look nice.
+        if let ConstKind::Value(_) = this.data.kind() {
+            return ty::tls::with(move |tcx| {
+                // Somehow trying to lift the valtree results in lifetime errors, so we lift the
+                // entire constant.
+                let lifted = tcx.lift(*this.data).unwrap();
+                let ConstKind::Value(valtree) = lifted.kind() else {
+                    bug!("we checked that this is a valtree")
+                };
+                let cx = FmtPrinter::new(tcx, Namespace::ValueNS);
+                let cx =
+                    cx.pretty_print_const_valtree(valtree, lifted.ty(), /*print_ty*/ true)?;
+                f.write_str(&cx.into_buffer())
+            });
+        }
+        // Fall back to something verbose.
         write!(
             f,
-            "Const {{ ty: {:?}, kind: {:?} }}",
-            &this.map(|data| data.ty()),
-            &this.map(|data| data.kind())
+            "{kind:?}: {ty:?}",
+            ty = &this.map(|data| data.ty()),
+            kind = &this.map(|data| data.kind())
         )
     }
 }

Diff for: compiler/rustc_middle/src/ty/typeck_results.rs

@@ -165,15 +165,15 @@ pub struct TypeckResults<'tcx> {
     /// reading places that are mentioned in a closure (because of _ patterns). However,
     /// to ensure the places are initialized, we introduce fake reads.
     /// Consider these two examples:
-    /// ``` (discriminant matching with only wildcard arm)
+    /// ```ignore (discriminant matching with only wildcard arm)
     /// let x: u8;
     /// let c = || match x { _ => () };
     /// ```
     /// In this example, we don't need to actually read/borrow `x` in `c`, and so we don't
     /// want to capture it. However, we do still want an error here, because `x` should have
     /// to be initialized at the point where c is created. Therefore, we add a "fake read"
     /// instead.
-    /// ``` (destructured assignments)
+    /// ```ignore (destructured assignments)
     /// let c = || {
     ///     let (t1, t2) = t;
     /// }