Auto merge of #84008 - Dylan-DPC:rollup-invxvg8, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #80733 (Improve links in inline code in `core::pin`.)
 - #81764 (Stabilize `rustdoc::bare_urls` lint)
 - #81938 (Stabilize `peekable_peek_mut`)
 - #83980 (Fix outdated crate names in compiler docs)
 - #83992 (Merge idents when generating source content)
 - #84001 (Update Clippy)

Failed merges:

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

compiler/rustc_ast/src/expand/mod.rs

@@ -1,3 +1,3 @@
-//! Definitions shared by macros / syntax extensions and e.g. librustc_middle.
+//! Definitions shared by macros / syntax extensions and e.g. `rustc_middle`.
 
 pub mod allocator;

compiler/rustc_ast/src/lib.rs

@@ -59,7 +59,7 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 
 /// Requirements for a `StableHashingContext` to be used in this crate.
 /// This is a hack to allow using the `HashStable_Generic` derive macro
-/// instead of implementing everything in librustc_middle.
+/// instead of implementing everything in `rustc_middle`.
 pub trait HashStableContext: rustc_span::HashStableContext {
     fn hash_attr(&mut self, _: &ast::Attribute, hasher: &mut StableHasher);
 }

compiler/rustc_ast_lowering/src/lib.rs

@@ -93,7 +93,7 @@ struct LoweringContext<'a, 'hir: 'a> {
 
     /// HACK(Centril): there is a cyclic dependency between the parser and lowering
     /// if we don't have this function pointer. To avoid that dependency so that
-    /// librustc_middle is independent of the parser, we use dynamic dispatch here.
+    /// `rustc_middle` is independent of the parser, we use dynamic dispatch here.
     nt_to_tokenstream: NtToTokenstream,
 
     /// Used to allocate HIR nodes.

compiler/rustc_codegen_cranelift/src/vtable.rs

@@ -1,6 +1,6 @@
 //! Codegen vtables and vtable accesses.
 //!
-//! See librustc_codegen_llvm/meth.rs for reference
+//! See `rustc_codegen_ssa/src/meth.rs` for reference.
 // FIXME dedup this logic between miri, cg_llvm and cg_clif
 
 use crate::prelude::*;

compiler/rustc_data_structures/src/svh.rs

@@ -19,7 +19,7 @@ pub struct Svh {
 impl Svh {
     /// Creates a new `Svh` given the hash. If you actually want to
     /// compute the SVH from some HIR, you want the `calculate_svh`
-    /// function found in `librustc_incremental`.
+    /// function found in `rustc_incremental`.
     pub fn new(hash: u64) -> Svh {
         Svh { hash }
     }

compiler/rustc_feature/src/lib.rs

@@ -1,7 +1,7 @@
 //! # Feature gates
 //!
 //! This crate declares the set of past and present unstable features in the compiler.
-//! Feature gate checking itself is done in `librustc_ast_passes/feature_gate.rs`
+//! Feature gate checking itself is done in `rustc_ast_passes/src/feature_gate.rs`
 //! at the moment.
 //!
 //! Features are enabled in programs via the crate-level attributes of

compiler/rustc_hir/src/stable_hash_impls.rs

@@ -9,7 +9,7 @@ use rustc_span::def_id::{DefPathHash, LocalDefId};
 
 /// Requirements for a `StableHashingContext` to be used in this crate.
 /// This is a hack to allow using the `HashStable_Generic` derive macro
-/// instead of implementing everything in librustc_middle.
+/// instead of implementing everything in `rustc_middle`.
 pub trait HashStableContext:
     rustc_ast::HashStableContext + rustc_target::HashStableContext
 {

compiler/rustc_hir/src/weak_lang_items.rs

@@ -18,8 +18,8 @@ pub static WEAK_ITEMS_REFS: SyncLazy<StableMap<Symbol, LangItem>> = SyncLazy::ne
     map
 });
 
-/// The `check_name` argument avoids the need for `librustc_hir` to depend on
-/// `librustc_session`.
+/// The `check_name` argument avoids the need for `rustc_hir` to depend on
+/// `rustc_session`.
 pub fn link_name<'a, F>(check_name: F, attrs: &'a [ast::Attribute]) -> Option<Symbol>
 where
     F: Fn(&'a ast::Attribute, Symbol) -> bool

compiler/rustc_infer/src/lib.rs

@@ -2,7 +2,7 @@
 //!
 //! - **Type inference.** The type inference code can be found in the `infer` module;
 //!   this code handles low-level equality and subtyping operations. The
-//!   type check pass in the compiler is found in the `librustc_typeck` crate.
+//!   type check pass in the compiler is found in the `rustc_typeck` crate.
 //!
 //! For more information about how rustc works, see the [rustc dev guide].
 //!

compiler/rustc_lexer/src/lib.rs

@@ -1,13 +1,13 @@
 //! Low-level Rust lexer.
 //!
-//! The idea with `librustc_lexer` is to make a reusable library,
+//! The idea with `rustc_lexer` is to make a reusable library,
 //! by separating out pure lexing and rustc-specific concerns, like spans,
 //! error reporting, and interning.  So, rustc_lexer operates directly on `&str`,
 //! produces simple tokens which are a pair of type-tag and a bit of original text,
 //! and does not report errors, instead storing them as flags on the token.
 //!
 //! Tokens produced by this lexer are not yet ready for parsing the Rust syntax.
-//! For that see [`librustc_parse::lexer`], which converts this basic token stream
+//! For that see [`rustc_parse::lexer`], which converts this basic token stream
 //! into wide tokens used by actual parser.
 //!
 //! The purpose of this crate is to convert raw sources into a labeled sequence
@@ -17,7 +17,7 @@
 //! The main entity of this crate is the [`TokenKind`] enum which represents common
 //! lexeme types.
 //!
-//! [`librustc_parse::lexer`]: ../rustc_parse/lexer/index.html
+//! [`rustc_parse::lexer`]: ../rustc_parse/lexer/index.html
 // We want to be able to build this crate with a stable compiler, so no
 // `#![feature]` attributes should be added.
 

compiler/rustc_lint/src/builtin.rs

@@ -2280,7 +2280,7 @@ declare_lint! {
 }
 
 declare_lint_pass!(
-    /// Check for used feature gates in `INCOMPLETE_FEATURES` in `librustc_feature/active.rs`.
+    /// Check for used feature gates in `INCOMPLETE_FEATURES` in `rustc_feature/src/active.rs`.
     IncompleteFeatures => [INCOMPLETE_FEATURES]
 );
 

compiler/rustc_lint/src/levels.rs

@@ -464,15 +464,16 @@ impl<'s> LintLevelsBuilder<'s> {
                 // we don't warn about the name change.
                 if let CheckLintNameResult::Warning(_, Some(new_name)) = lint_result {
                     // Ignore any errors or warnings that happen because the new name is inaccurate
-                    if let CheckLintNameResult::Ok(ids) =
-                        store.check_lint_name(&new_name, tool_name)
-                    {
+                    // NOTE: `new_name` already includes the tool name, so we don't have to add it again.
+                    if let CheckLintNameResult::Ok(ids) = store.check_lint_name(&new_name, None) {
                         let src =
                             LintLevelSource::Node(Symbol::intern(&new_name), li.span(), reason);
                         for &id in ids {
                             self.check_gated_lint(id, attr.span);
                             self.insert_spec(&mut specs, id, (level, src));
                         }
+                    } else {
+                        panic!("renamed lint does not exist: {}", new_name);
                     }
                 }
             }

compiler/rustc_middle/src/ich/impls_syntax.rs

@@ -1,5 +1,5 @@
 //! This module contains `HashStable` implementations for various data types
-//! from librustc_ast in no particular order.
+//! from `rustc_ast` in no particular order.
 
 use crate::ich::StableHashingContext;
 

compiler/rustc_middle/src/mir/interpret/error.rs

@@ -46,7 +46,7 @@ static_assert_size!(InterpErrorInfo<'_>, 8);
 /// Packages the kind of error we got from the const code interpreter
 /// up with a Rust-level backtrace of where the error occurred.
 /// Thsese should always be constructed by calling `.into()` on
-/// a `InterpError`. In `librustc_mir::interpret`, we have `throw_err_*`
+/// a `InterpError`. In `rustc_mir::interpret`, we have `throw_err_*`
 /// macros for this.
 #[derive(Debug)]
 pub struct InterpErrorInfo<'tcx>(Box<InterpErrorInfoInner<'tcx>>);

compiler/rustc_middle/src/traits/query.rs

@@ -3,7 +3,7 @@
 //! which makes a canonical query by replacing unbound inference
 //! variables and regions, so that results can be reused more broadly.
 //! The providers for the queries defined here can be found in
-//! `librustc_traits`.
+//! `rustc_traits`.
 
 use crate::ich::StableHashingContext;
 use crate::infer::canonical::{Canonical, QueryResponse};

compiler/rustc_middle/src/ty/fold.rs

@@ -44,7 +44,7 @@ use std::ops::ControlFlow;
 /// This trait is implemented for every type that can be folded.
 /// Basically, every type that has a corresponding method in `TypeFolder`.
 ///
-/// To implement this conveniently, use the derive macro located in librustc_macros.
+/// To implement this conveniently, use the derive macro located in `rustc_macros`.
 pub trait TypeFoldable<'tcx>: fmt::Debug + Clone {
     fn super_fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self;
     fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self {

compiler/rustc_middle/src/ty/sty.rs

@@ -80,7 +80,7 @@ impl BoundRegionKind {
 /// Defines the kinds of types.
 ///
 /// N.B., if you change this, you'll probably want to change the corresponding
-/// AST structure in `librustc_ast/ast.rs` as well.
+/// AST structure in `rustc_ast/src/ast.rs` as well.
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable, Debug)]
 #[derive(HashStable)]
 #[rustc_diagnostic_item = "TyKind"]
@@ -2116,7 +2116,7 @@ impl<'tcx> TyS<'tcx> {
     ///
     /// Note that during type checking, we use an inference variable
     /// to represent the closure kind, because it has not yet been
-    /// inferred. Once upvar inference (in `src/librustc_typeck/check/upvar.rs`)
+    /// inferred. Once upvar inference (in `rustc_typeck/src/check/upvar.rs`)
     /// is complete, that type variable will be unified.
     pub fn to_opt_closure_kind(&self) -> Option<ty::ClosureKind> {
         match self.kind() {

compiler/rustc_mir/src/borrow_check/region_infer/graphviz.rs

@@ -1,5 +1,5 @@
 //! This module provides linkage between RegionInferenceContext and
-//! librustc_graphviz traits, specialized to attaching borrowck analysis
+//! `rustc_graphviz` traits, specialized to attaching borrowck analysis
 //! data to rendered labels.
 
 use std::borrow::Cow;

compiler/rustc_parse/src/lexer/mod.rs

@@ -128,7 +128,7 @@ impl<'a> StringReader<'a> {
     }
 
     /// Turns simple `rustc_lexer::TokenKind` enum into a rich
-    /// `librustc_ast::TokenKind`. This turns strings into interned
+    /// `rustc_ast::TokenKind`. This turns strings into interned
     /// symbols and runs additional validation.
     fn cook_lexer_token(&self, token: rustc_lexer::TokenKind, start: BytePos) -> Option<TokenKind> {
         Some(match token {

compiler/rustc_query_system/src/dep_graph/dep_node.rs

@@ -26,7 +26,7 @@
 //!   could not be instantiated because the current compilation session
 //!   contained no `DefId` for thing that had been removed.
 //!
-//! `DepNode` definition happens in `librustc_middle` with the `define_dep_nodes!()` macro.
+//! `DepNode` definition happens in `rustc_middle` with the `define_dep_nodes!()` macro.
 //! This macro defines the `DepKind` enum and a corresponding `DepConstructor` enum. The
 //! `DepConstructor` enum links a `DepKind` to the parameters that are needed at runtime in order
 //! to construct a valid `DepNode` fingerprint.

compiler/rustc_resolve/src/lib.rs

@@ -6,7 +6,7 @@
 //! Paths in macros, imports, expressions, types, patterns are resolved here.
 //! Label and lifetime names are resolved here as well.
 //!
-//! Type-relative name resolution (methods, fields, associated items) happens in `librustc_typeck`.
+//! Type-relative name resolution (methods, fields, associated items) happens in `rustc_typeck`.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(box_patterns)]

compiler/rustc_target/README.md

@@ -1,4 +1,4 @@
-`librustc_target` contains some very low-level details that are
+`rustc_target` contains some very low-level details that are
 specific to different compilation targets and so forth.
 
 For more information about how rustc works, see the [rustc dev guide].

compiler/rustc_target/src/lib.rs

@@ -28,5 +28,5 @@ pub mod spec;
 
 /// Requirements for a `StableHashingContext` to be used in this crate.
 /// This is a hack to allow using the `HashStable_Generic` derive macro
-/// instead of implementing everything in librustc_middle.
+/// instead of implementing everything in `rustc_middle`.
 pub trait HashStableContext {}

compiler/rustc_trait_selection/src/traits/query/mod.rs

@@ -3,7 +3,7 @@
 //! which makes a canonical query by replacing unbound inference
 //! variables and regions, so that results can be reused more broadly.
 //! The providers for the queries defined here can be found in
-//! `librustc_traits`.
+//! `rustc_traits`.
 
 pub mod dropck_outlives;
 pub mod evaluate_obligation;

library/core/src/iter/adapters/peekable.rs

@@ -233,7 +233,6 @@ impl<I: Iterator> Peekable<I> {
     /// Basic usage:
     ///
     /// ```
-    /// #![feature(peekable_peek_mut)]
     /// let mut iter = [1, 2, 3].iter().peekable();
     ///
     /// // Like with `peek()`, we can see into the future without advancing the iterator.
@@ -251,7 +250,7 @@ impl<I: Iterator> Peekable<I> {
     /// assert_eq!(iter.collect::<Vec<_>>(), vec![&5, &3]);
     /// ```
     #[inline]
-    #[unstable(feature = "peekable_peek_mut", issue = "78302")]
+    #[stable(feature = "peekable_peek_mut", since = "1.53.0")]
     pub fn peek_mut(&mut self) -> Option<&mut I::Item> {
         let iter = &mut self.iter;
         self.peeked.get_or_insert_with(|| iter.next()).as_mut()

library/core/src/iter/traits/iterator.rs

@@ -937,20 +937,16 @@ pub trait Iterator {
         Enumerate::new(self)
     }
 
-    /// Creates an iterator which can use [`peek`] to look at the next element of
-    /// the iterator without consuming it.
+    /// Creates an iterator which can use the [`peek`] and [`peek_mut`] methods
+    /// to look at the next element of the iterator without consuming it. See
+    /// their documentation for more information.
     ///
-    /// Adds a [`peek`] method to an iterator. See its documentation for
-    /// more information.
+    /// Note that the underlying iterator is still advanced when [`peek`] or
+    /// [`peek_mut`] are called for the first time: In order to retrieve the
+    /// next element, [`next`] is called on the underlying iterator, hence any
+    /// side effects (i.e. anything other than fetching the next value) of
+    /// the [`next`] method will occur.
     ///
-    /// Note that the underlying iterator is still advanced when [`peek`] is
-    /// called for the first time: In order to retrieve the next element,
-    /// [`next`] is called on the underlying iterator, hence any side effects (i.e.
-    /// anything other than fetching the next value) of the [`next`] method
-    /// will occur.
-    ///
-    /// [`peek`]: Peekable::peek
-    /// [`next`]: Iterator::next
     ///
     /// # Examples
     ///
@@ -977,6 +973,32 @@ pub trait Iterator {
     /// assert_eq!(iter.peek(), None);
     /// assert_eq!(iter.next(), None);
     /// ```
+    ///
+    /// Using [`peek_mut`] to mutate the next item without advancing the
+    /// iterator:
+    ///
+    /// ```
+    /// let xs = [1, 2, 3];
+    ///
+    /// let mut iter = xs.iter().peekable();
+    ///
+    /// // `peek_mut()` lets us see into the future
+    /// assert_eq!(iter.peek_mut(), Some(&mut &1));
+    /// assert_eq!(iter.peek_mut(), Some(&mut &1));
+    /// assert_eq!(iter.next(), Some(&1));
+    ///
+    /// if let Some(mut p) = iter.peek_mut() {
+    ///     assert_eq!(*p, &2);
+    ///     // put a value into the iterator
+    ///     *p = &1000;
+    /// }
+    ///
+    /// // The value reappears as the iterator continues
+    /// assert_eq!(iter.collect::<Vec<_>>(), vec![&1000, &3]);
+    /// ```
+    /// [`peek`]: Peekable::peek
+    /// [`peek_mut`]: Peekable::peek_mut
+    /// [`next`]: Iterator::next
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     fn peekable(self) -> Peekable<Self>

library/core/src/lib.rs

@@ -298,7 +298,8 @@ pub mod primitive;
     unused_imports,
     unsafe_op_in_unsafe_fn
 )]
-#[allow(rustdoc::non_autolinks)]
+#[cfg_attr(bootstrap, allow(rustdoc::non_autolinks))]
+#[cfg_attr(not(bootstrap), allow(rustdoc::bare_urls))]
 // FIXME: This annotation should be moved into rust-lang/stdarch after clashing_extern_declarations is
 // merged. It currently cannot because bootstrap fails as the lint hasn't been defined yet.
 #[allow(clashing_extern_declarations)]