Auto merge of rust-lang#124910 - matthiaskrgr:rollup-lo1uvdn, r=matth…

…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#123344 (Remove braces when fixing a nested use tree into a single item)
 - rust-lang#124587 (Generic `NonZero` post-stabilization changes.)
 - rust-lang#124775 (crashes: add lastest batch of crash tests)
 - rust-lang#124869 (Make sure we don't deny macro vars w keyword names)
 - rust-lang#124876 (Simplify `use crate::rustc_foo::bar` occurrences.)
 - rust-lang#124892 (Update cc crate to v1.0.97)
 - rust-lang#124903 (Ignore empty RUSTC_WRAPPER in bootstrap)
 - rust-lang#124909 (Reapply the part of rust-lang#124548 that bors forgot)

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

Cargo.lock

@@ -479,9 +479,9 @@ version = "0.1.0"
 
 [[package]]
 name = "cc"
-version = "1.0.92"
+version = "1.0.97"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2678b2e3449475e95b0aa6f9b506a28e61b3dc8996592b983695e8ebb58a8b41"
+checksum = "099a5357d84c4c61eb35fc8eafa9a79a902c2f76911e5747ced4e032edd8d9b4"
 
 [[package]]
 name = "cfg-if"
@@ -2219,7 +2219,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c2a198fb6b0eada2a8df47933734e6d35d350665a33a3593d7164fa52c75c19"
 dependencies = [
  "cfg-if",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.4",
 ]
 
 [[package]]

compiler/rustc_abi/src/layout.rs

@@ -2,6 +2,7 @@ use std::borrow::{Borrow, Cow};
 use std::cmp;
 use std::fmt::{self, Write};
 use std::iter;
+use std::num::NonZero;
 use std::ops::Bound;
 use std::ops::Deref;
 
@@ -10,8 +11,8 @@ use tracing::debug;
 
 use crate::{
     Abi, AbiAndPrefAlign, Align, FieldsShape, IndexSlice, IndexVec, Integer, LayoutS, Niche,
-    NonZeroUsize, Primitive, ReprOptions, Scalar, Size, StructKind, TagEncoding, TargetDataLayout,
-    Variants, WrappingRange,
+    Primitive, ReprOptions, Scalar, Size, StructKind, TagEncoding, TargetDataLayout, Variants,
+    WrappingRange,
 };
 
 // A variant is absent if it's uninhabited and only has ZST fields.
@@ -327,7 +328,7 @@ pub trait LayoutCalculator {
 
         Some(LayoutS {
             variants: Variants::Single { index: VariantIdx::new(0) },
-            fields: FieldsShape::Union(NonZeroUsize::new(only_variant.len())?),
+            fields: FieldsShape::Union(NonZero::new(only_variant.len())?),
             abi,
             largest_niche: None,
             align,

compiler/rustc_abi/src/lib.rs

@@ -4,7 +4,7 @@
 #![cfg_attr(feature = "nightly", feature(rustdoc_internals))]
 
 use std::fmt;
-use std::num::{NonZeroUsize, ParseIntError};
+use std::num::{NonZero, ParseIntError};
 use std::ops::{Add, AddAssign, Mul, RangeInclusive, Sub};
 use std::str::FromStr;
 
@@ -1149,7 +1149,7 @@ pub enum FieldsShape<FieldIdx: Idx> {
     Primitive,
 
     /// All fields start at no offset. The `usize` is the field count.
-    Union(NonZeroUsize),
+    Union(NonZero<usize>),
 
     /// Array/vector-like placement, with all fields of identical types.
     Array { stride: Size, count: u64 },

compiler/rustc_ast/src/ast.rs

@@ -2164,7 +2164,7 @@ pub enum TyKind {
     MacCall(P<MacCall>),
     /// Placeholder for a `va_list`.
     CVarArgs,
-    /// Pattern types like `pattern_type!(u32 is 1..=)`, which is the same as `NonZeroU32`,
+    /// Pattern types like `pattern_type!(u32 is 1..=)`, which is the same as `NonZero<u32>`,
     /// just as part of the type system.
     Pat(P<Ty>, P<Pat>),
     /// Sometimes we need a dummy value when no error has occurred.
@@ -2729,7 +2729,7 @@ pub enum UseTreeKind {
     /// `use prefix` or `use prefix as rename`
     Simple(Option<Ident>),
     /// `use prefix::{...}`
-    Nested(ThinVec<(UseTree, NodeId)>),
+    Nested { items: ThinVec<(UseTree, NodeId)>, span: Span },
     /// `use prefix::*`
     Glob,
 }

compiler/rustc_ast/src/mut_visit.rs

@@ -441,7 +441,7 @@ fn noop_visit_use_tree<T: MutVisitor>(use_tree: &mut UseTree, vis: &mut T) {
     vis.visit_path(prefix);
     match kind {
         UseTreeKind::Simple(rename) => visit_opt(rename, |rename| vis.visit_ident(rename)),
-        UseTreeKind::Nested(items) => {
+        UseTreeKind::Nested { items, .. } => {
             for (tree, id) in items {
                 vis.visit_use_tree(tree);
                 vis.visit_id(id);

compiler/rustc_ast/src/visit.rs

@@ -517,8 +517,8 @@ pub fn walk_use_tree<'a, V: Visitor<'a>>(
             visit_opt!(visitor, visit_ident, rename);
         }
         UseTreeKind::Glob => {}
-        UseTreeKind::Nested(ref use_trees) => {
-            for &(ref nested_tree, nested_id) in use_trees {
+        UseTreeKind::Nested { ref items, .. } => {
+            for &(ref nested_tree, nested_id) in items {
                 try_visit!(visitor.visit_use_tree(nested_tree, nested_id, true));
             }
         }

compiler/rustc_ast_lowering/src/item.rs

@@ -135,8 +135,8 @@ impl<'hir> LoweringContext<'_, 'hir> {
 
     fn lower_item_id_use_tree(&mut self, tree: &UseTree, vec: &mut SmallVec<[hir::ItemId; 1]>) {
         match &tree.kind {
-            UseTreeKind::Nested(nested_vec) => {
-                for &(ref nested, id) in nested_vec {
+            UseTreeKind::Nested { items, .. } => {
+                for &(ref nested, id) in items {
                     vec.push(hir::ItemId {
                         owner_id: hir::OwnerId { def_id: self.local_def_id(id) },
                     });
@@ -518,7 +518,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
                 let path = self.lower_use_path(res, &path, ParamMode::Explicit);
                 hir::ItemKind::Use(path, hir::UseKind::Glob)
             }
-            UseTreeKind::Nested(ref trees) => {
+            UseTreeKind::Nested { items: ref trees, .. } => {
                 // Nested imports are desugared into simple imports.
                 // So, if we start with
                 //

compiler/rustc_ast_pretty/src/pprust/state/item.rs

@@ -715,7 +715,7 @@ impl<'a> State<'a> {
                 }
                 self.word("*");
             }
-            ast::UseTreeKind::Nested(items) => {
+            ast::UseTreeKind::Nested { items, .. } => {
                 if !tree.prefix.segments.is_empty() {
                     self.print_path(&tree.prefix, false, 0);
                     self.word("::");
@@ -734,7 +734,7 @@ impl<'a> State<'a> {
                         self.print_use_tree(&use_tree.0);
                         if !is_last {
                             self.word(",");
-                            if let ast::UseTreeKind::Nested(_) = use_tree.0.kind {
+                            if let ast::UseTreeKind::Nested { .. } = use_tree.0.kind {
                                 self.hardbreak();
                             } else {
                                 self.space();

compiler/rustc_builtin_macros/src/assert/context.rs

@@ -120,10 +120,13 @@ impl<'cx, 'a> Context<'cx, 'a> {
                 thin_vec![self.cx.attr_nested_word(sym::allow, sym::unused_imports, self.span)],
                 ItemKind::Use(UseTree {
                     prefix: self.cx.path(self.span, self.cx.std_path(&[sym::asserting])),
-                    kind: UseTreeKind::Nested(thin_vec![
-                        nested_tree(self, sym::TryCaptureGeneric),
-                        nested_tree(self, sym::TryCapturePrintable),
-                    ]),
+                    kind: UseTreeKind::Nested {
+                        items: thin_vec![
+                            nested_tree(self, sym::TryCaptureGeneric),
+                            nested_tree(self, sym::TryCapturePrintable),
+                        ],
+                        span: self.span,
+                    },
                     span: self.span,
                 }),
             ),

compiler/rustc_codegen_gcc/src/debuginfo.rs

@@ -1,10 +1,9 @@
-use crate::rustc_index::Idx;
 use gccjit::{Location, RValue};
 use rustc_codegen_ssa::mir::debuginfo::{DebugScope, FunctionDebugContext, VariableKind};
 use rustc_codegen_ssa::traits::{DebugInfoBuilderMethods, DebugInfoMethods};
 use rustc_data_structures::sync::Lrc;
 use rustc_index::bit_set::BitSet;
-use rustc_index::IndexVec;
+use rustc_index::{Idx, IndexVec};
 use rustc_middle::mir::{self, Body, SourceScope};
 use rustc_middle::ty::{Instance, PolyExistentialTraitRef, Ty};
 use rustc_session::config::DebugInfo;

compiler/rustc_codegen_gcc/src/type_of.rs

@@ -1,7 +1,7 @@
 use std::fmt::Write;
 
-use crate::rustc_codegen_ssa::traits::{BaseTypeMethods, DerivedTypeMethods, LayoutTypeMethods};
 use gccjit::{Struct, Type};
+use rustc_codegen_ssa::traits::{BaseTypeMethods, DerivedTypeMethods, LayoutTypeMethods};
 use rustc_middle::bug;
 use rustc_middle::ty::layout::{LayoutOf, TyAndLayout};
 use rustc_middle::ty::print::with_no_trimmed_paths;
@@ -205,7 +205,7 @@ impl<'tcx> LayoutGccExt<'tcx> for TyAndLayout<'tcx> {
     /// of that field's type - this is useful for taking the address of
     /// that field and ensuring the struct has the right alignment.
     fn gcc_type<'gcc>(&self, cx: &CodegenCx<'gcc, 'tcx>) -> Type<'gcc> {
-        use crate::rustc_middle::ty::layout::FnAbiOf;
+        use rustc_middle::ty::layout::FnAbiOf;
         // This must produce the same result for `repr(transparent)` wrappers as for the inner type!
         // In other words, this should generally not look at the type at all, but only at the
         // layout.

compiler/rustc_codegen_ssa/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 # tidy-alphabetical-start
 ar_archive_writer = "0.2.0"
 bitflags = "2.4.1"
-cc = "1.0.90"
+cc = "1.0.97"
 itertools = "0.12"
 jobserver = "0.1.28"
 pathdiff = "0.2.0"

compiler/rustc_expand/src/expand.rs

@@ -1194,8 +1194,8 @@ impl InvocationCollectorNode for P<ast::Item> {
                 match &ut.kind {
                     ast::UseTreeKind::Glob => {}
                     ast::UseTreeKind::Simple(_) => idents.push(ut.ident()),
-                    ast::UseTreeKind::Nested(nested) => {
-                        for (ut, _) in nested {
+                    ast::UseTreeKind::Nested { items, .. } => {
+                        for (ut, _) in items {
                             collect_use_tree_leaves(ut, idents);
                         }
                     }

compiler/rustc_hir_typeck/src/fn_ctxt/inspect_obligations.rs

@@ -1,9 +1,8 @@
 //! A utility module to inspect currently ambiguous obligations in the current context.
-use crate::rustc_middle::ty::TypeVisitableExt;
 use crate::FnCtxt;
 use rustc_infer::traits::solve::Goal;
 use rustc_infer::traits::{self, ObligationCause};
-use rustc_middle::ty::{self, Ty};
+use rustc_middle::ty::{self, Ty, TypeVisitableExt};
 use rustc_span::Span;
 use rustc_trait_selection::solve::inspect::ProofTreeInferCtxtExt;
 use rustc_trait_selection::solve::inspect::{InspectConfig, InspectGoal, ProofTreeVisitor};

compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs

@@ -6,7 +6,6 @@ use crate::fn_ctxt::rustc_span::BytePos;
 use crate::hir::is_range_literal;
 use crate::method::probe;
 use crate::method::probe::{IsSuggestion, Mode, ProbeScope};
-use crate::rustc_middle::ty::Article;
 use core::cmp::min;
 use core::iter;
 use hir::def_id::LocalDefId;
@@ -28,7 +27,7 @@ use rustc_middle::lint::in_external_macro;
 use rustc_middle::middle::stability::EvalResult;
 use rustc_middle::ty::print::with_no_trimmed_paths;
 use rustc_middle::ty::{
-    self, suggest_constraining_type_params, Binder, IsSuggestable, ToPredicate, Ty,
+    self, suggest_constraining_type_params, Article, Binder, IsSuggestable, ToPredicate, Ty,
     TypeVisitableExt,
 };
 use rustc_session::errors::ExprParenthesesNeeded;
@@ -2227,15 +2226,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
     ) -> bool {
         let tcx = self.tcx;
         let (adt, args, unwrap) = match expected.kind() {
-            // In case Option<NonZero*> is wanted, but * is provided, suggest calling new
+            // In case `Option<NonZero<T>>` is wanted, but `T` is provided, suggest calling `new`.
             ty::Adt(adt, args) if tcx.is_diagnostic_item(sym::Option, adt.did()) => {
                 let nonzero_type = args.type_at(0); // Unwrap option type.
                 let ty::Adt(adt, args) = nonzero_type.kind() else {
                     return false;
                 };
                 (adt, args, "")
             }
-            // In case `NonZero<*>` is wanted but `*` is provided, also add `.unwrap()` to satisfy types.
+            // In case `NonZero<T>` is wanted but `T` is provided, also add `.unwrap()` to satisfy types.
             ty::Adt(adt, args) => (adt, args, ".unwrap()"),
             _ => return false,
         };
@@ -2244,32 +2243,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             return false;
         }
 
-        // FIXME: This can be simplified once `NonZero<T>` is stable.
-        let coercable_types = [
-            ("NonZeroU8", tcx.types.u8),
-            ("NonZeroU16", tcx.types.u16),
-            ("NonZeroU32", tcx.types.u32),
-            ("NonZeroU64", tcx.types.u64),
-            ("NonZeroU128", tcx.types.u128),
-            ("NonZeroI8", tcx.types.i8),
-            ("NonZeroI16", tcx.types.i16),
-            ("NonZeroI32", tcx.types.i32),
-            ("NonZeroI64", tcx.types.i64),
-            ("NonZeroI128", tcx.types.i128),
-        ];
-
         let int_type = args.type_at(0);
-
-        let Some(nonzero_alias) = coercable_types.iter().find_map(|(nonzero_alias, t)| {
-            if *t == int_type && self.can_coerce(expr_ty, *t) { Some(nonzero_alias) } else { None }
-        }) else {
+        if !self.can_coerce(expr_ty, int_type) {
             return false;
-        };
+        }
 
         err.multipart_suggestion(
-            format!("consider calling `{nonzero_alias}::new`"),
+            format!("consider calling `{}::new`", sym::NonZero),
             vec![
-                (expr.span.shrink_to_lo(), format!("{nonzero_alias}::new(")),
+                (expr.span.shrink_to_lo(), format!("{}::new(", sym::NonZero)),
                 (expr.span.shrink_to_hi(), format!("){unwrap}")),
             ],
             Applicability::MaybeIncorrect,

compiler/rustc_lint/src/builtin.rs

@@ -40,6 +40,7 @@ use crate::{
     },
     EarlyContext, EarlyLintPass, LateContext, LateLintPass, Level, LintContext,
 };
+use ast::token::TokenKind;
 use rustc_ast::tokenstream::{TokenStream, TokenTree};
 use rustc_ast::visit::{FnCtxt, FnKind};
 use rustc_ast::{self as ast, *};
@@ -1869,16 +1870,24 @@ struct UnderMacro(bool);
 
 impl KeywordIdents {
     fn check_tokens(&mut self, cx: &EarlyContext<'_>, tokens: &TokenStream) {
+        // Check if the preceding token is `$`, because we want to allow `$async`, etc.
+        let mut prev_dollar = false;
         for tt in tokens.trees() {
             match tt {
                 // Only report non-raw idents.
                 TokenTree::Token(token, _) => {
                     if let Some((ident, token::IdentIsRaw::No)) = token.ident() {
-                        self.check_ident_token(cx, UnderMacro(true), ident);
+                        if !prev_dollar {
+                            self.check_ident_token(cx, UnderMacro(true), ident);
+                        }
+                    } else if token.kind == TokenKind::Dollar {
+                        prev_dollar = true;
+                        continue;
                     }
                 }
                 TokenTree::Delimited(.., tts) => self.check_tokens(cx, tts),
             }
+            prev_dollar = false;
         }
     }
 

compiler/rustc_lint/src/unused.rs

@@ -1501,7 +1501,7 @@ declare_lint_pass!(UnusedImportBraces => [UNUSED_IMPORT_BRACES]);
 
 impl UnusedImportBraces {
     fn check_use_tree(&self, cx: &EarlyContext<'_>, use_tree: &ast::UseTree, item: &ast::Item) {
-        if let ast::UseTreeKind::Nested(ref items) = use_tree.kind {
+        if let ast::UseTreeKind::Nested { ref items, .. } = use_tree.kind {
             // Recursively check nested UseTrees
             for (tree, _) in items {
                 self.check_use_tree(cx, tree, item);
@@ -1522,7 +1522,7 @@ impl UnusedImportBraces {
                     rename.unwrap_or(orig_ident).name
                 }
                 ast::UseTreeKind::Glob => Symbol::intern("*"),
-                ast::UseTreeKind::Nested(_) => return,
+                ast::UseTreeKind::Nested { .. } => return,
             };
 
             cx.emit_span_lint(

compiler/rustc_llvm/Cargo.toml

@@ -10,5 +10,5 @@ libc = "0.2.73"
 
 [build-dependencies]
 # tidy-alphabetical-start
-cc = "1.0.90"
+cc = "1.0.97"
 # tidy-alphabetical-end

compiler/rustc_middle/src/ty/layout.rs

@@ -338,13 +338,14 @@ impl<'tcx> SizeSkeleton<'tcx> {
                     pointee,
                     |ty| match tcx.try_normalize_erasing_regions(param_env, ty) {
                         Ok(ty) => ty,
-                        Err(_e) => {
-                            if let Some(guar) = tcx.dcx().has_errors() {
-                                Ty::new_error(tcx, guar)
-                            } else {
-                                bug!("normalization failed, but no errors reported");
-                            }
-                        }
+                        Err(e) => Ty::new_error_with_message(
+                            tcx,
+                            DUMMY_SP,
+                            format!(
+                                "normalization failed for {} but no errors reported",
+                                e.get_type_for_failure()
+                            ),
+                        ),
                     },
                     || {},
                 );

compiler/rustc_mir_transform/src/large_enums.rs

@@ -1,7 +1,7 @@
-use crate::rustc_middle::ty::util::IntTypeExt;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_middle::mir::interpret::AllocId;
 use rustc_middle::mir::*;
+use rustc_middle::ty::util::IntTypeExt;
 use rustc_middle::ty::{self, AdtDef, ParamEnv, Ty, TyCtxt};
 use rustc_session::Session;
 use rustc_target::abi::{HasDataLayout, Size, TagEncoding, Variants};