Rollup of 7 pull requests

compiler/rustc_ast_pretty/src/pprust/state.rs

@@ -377,7 +377,7 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
 
     fn print_string(&mut self, st: &str, style: ast::StrStyle) {
         let st = match style {
-            ast::StrStyle::Cooked => (format!("\"{}\"", st.escape_debug())),
+            ast::StrStyle::Cooked => format!("\"{}\"", st.escape_debug()),
             ast::StrStyle::Raw(n) => {
                 format!("r{delim}\"{string}\"{delim}", delim = "#".repeat(n as usize), string = st)
             }

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -16,9 +16,7 @@ use rustc_middle::mir::{
     FakeReadCause, LocalDecl, LocalInfo, LocalKind, Location, Operand, Place, PlaceRef,
     ProjectionElem, Rvalue, Statement, StatementKind, Terminator, TerminatorKind, VarBindingForm,
 };
-use rustc_middle::ty::{
-    self, subst::Subst, suggest_constraining_type_params, EarlyBinder, PredicateKind, Ty,
-};
+use rustc_middle::ty::{self, subst::Subst, suggest_constraining_type_params, PredicateKind, Ty};
 use rustc_mir_dataflow::move_paths::{InitKind, MoveOutIndex, MovePathIndex};
 use rustc_span::def_id::LocalDefId;
 use rustc_span::hygiene::DesugaringKind;
@@ -461,35 +459,37 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         let tcx = self.infcx.tcx;
 
         // Find out if the predicates show that the type is a Fn or FnMut
-        let find_fn_kind_from_did = |predicates: &[(ty::Predicate<'tcx>, Span)], substs| {
-            predicates.iter().find_map(|(pred, _)| {
-                let pred = if let Some(substs) = substs {
-                    EarlyBinder(*pred).subst(tcx, substs).kind().skip_binder()
-                } else {
-                    pred.kind().skip_binder()
-                };
-                if let ty::PredicateKind::Trait(pred) = pred && pred.self_ty() == ty {
+        let find_fn_kind_from_did =
+            |predicates: ty::EarlyBinder<&[(ty::Predicate<'tcx>, Span)]>, substs| {
+                predicates.0.iter().find_map(|(pred, _)| {
+                    let pred = if let Some(substs) = substs {
+                        predicates.rebind(*pred).subst(tcx, substs).kind().skip_binder()
+                    } else {
+                        pred.kind().skip_binder()
+                    };
+                    if let ty::PredicateKind::Trait(pred) = pred && pred.self_ty() == ty {
                     if Some(pred.def_id()) == tcx.lang_items().fn_trait() {
                         return Some(hir::Mutability::Not);
                     } else if Some(pred.def_id()) == tcx.lang_items().fn_mut_trait() {
                         return Some(hir::Mutability::Mut);
                     }
                 }
-                None
-            })
-        };
+                    None
+                })
+            };
 
         // If the type is opaque/param/closure, and it is Fn or FnMut, let's suggest (mutably)
         // borrowing the type, since `&mut F: FnMut` iff `F: FnMut` and similarly for `Fn`.
         // These types seem reasonably opaque enough that they could be substituted with their
         // borrowed variants in a function body when we see a move error.
         let borrow_level = match ty.kind() {
             ty::Param(_) => find_fn_kind_from_did(
-                tcx.explicit_predicates_of(self.mir_def_id().to_def_id()).predicates,
+                tcx.bound_explicit_predicates_of(self.mir_def_id().to_def_id())
+                    .map_bound(|p| p.predicates),
                 None,
             ),
             ty::Opaque(did, substs) => {
-                find_fn_kind_from_did(tcx.explicit_item_bounds(*did), Some(*substs))
+                find_fn_kind_from_did(tcx.bound_explicit_item_bounds(*did), Some(*substs))
             }
             ty::Closure(_, substs) => match substs.as_closure().kind() {
                 ty::ClosureKind::Fn => Some(hir::Mutability::Not),

compiler/rustc_borrowck/src/diagnostics/region_name.rs

@@ -839,7 +839,7 @@ impl<'tcx> MirBorrowckCtxt<'_, 'tcx> {
             hir::Node::Expr(hir::Expr {
                 kind: hir::ExprKind::Closure(&hir::Closure { fn_decl_span, .. }),
                 ..
-            }) => (tcx.sess.source_map().end_point(fn_decl_span)),
+            }) => tcx.sess.source_map().end_point(fn_decl_span),
             _ => self.body.span,
         };
 

compiler/rustc_builtin_macros/src/format.rs

@@ -280,6 +280,11 @@ struct Context<'a, 'b> {
     unused_names_lint: PositionalNamedArgsLint,
 }
 
+pub struct FormatArg {
+    expr: P<ast::Expr>,
+    named: bool,
+}
+
 /// Parses the arguments from the given list of tokens, returning the diagnostic
 /// if there's a parse error so we can continue parsing other format!
 /// expressions.
@@ -293,8 +298,8 @@ fn parse_args<'a>(
     ecx: &mut ExtCtxt<'a>,
     sp: Span,
     tts: TokenStream,
-) -> PResult<'a, (P<ast::Expr>, Vec<P<ast::Expr>>, FxHashMap<Symbol, (usize, Span)>)> {
-    let mut args = Vec::<P<ast::Expr>>::new();
+) -> PResult<'a, (P<ast::Expr>, Vec<FormatArg>, FxHashMap<Symbol, (usize, Span)>)> {
+    let mut args = Vec::<FormatArg>::new();
     let mut names = FxHashMap::<Symbol, (usize, Span)>::default();
 
     let mut p = ecx.new_parser_from_tts(tts);
@@ -362,7 +367,7 @@ fn parse_args<'a>(
                 let e = p.parse_expr()?;
                 if let Some((prev, _)) = names.get(&ident.name) {
                     ecx.struct_span_err(e.span, &format!("duplicate argument named `{}`", ident))
-                        .span_label(args[*prev].span, "previously here")
+                        .span_label(args[*prev].expr.span, "previously here")
                         .span_label(e.span, "duplicate argument")
                         .emit();
                     continue;
@@ -374,7 +379,7 @@ fn parse_args<'a>(
                 // args. And remember the names.
                 let slot = args.len();
                 names.insert(ident.name, (slot, ident.span));
-                args.push(e);
+                args.push(FormatArg { expr: e, named: true });
             }
             _ => {
                 let e = p.parse_expr()?;
@@ -385,11 +390,11 @@ fn parse_args<'a>(
                     );
                     err.span_label(e.span, "positional arguments must be before named arguments");
                     for pos in names.values() {
-                        err.span_label(args[pos.0].span, "named argument");
+                        err.span_label(args[pos.0].expr.span, "named argument");
                     }
                     err.emit();
                 }
-                args.push(e);
+                args.push(FormatArg { expr: e, named: false });
             }
         }
     }
@@ -1214,7 +1219,7 @@ pub fn expand_preparsed_format_args(
     ecx: &mut ExtCtxt<'_>,
     sp: Span,
     efmt: P<ast::Expr>,
-    args: Vec<P<ast::Expr>>,
+    args: Vec<FormatArg>,
     names: FxHashMap<Symbol, (usize, Span)>,
     append_newline: bool,
 ) -> P<ast::Expr> {
@@ -1304,6 +1309,25 @@ pub fn expand_preparsed_format_args(
                 e.span_label(fmt_span.from_inner(InnerSpan::new(span.start, span.end)), label);
             }
         }
+        if err.should_be_replaced_with_positional_argument {
+            let captured_arg_span =
+                fmt_span.from_inner(InnerSpan::new(err.span.start, err.span.end));
+            let positional_args = args.iter().filter(|arg| !arg.named).collect::<Vec<_>>();
+            if let Ok(arg) = ecx.source_map().span_to_snippet(captured_arg_span) {
+                let span = match positional_args.last() {
+                    Some(arg) => arg.expr.span,
+                    None => fmt_sp,
+                };
+                e.multipart_suggestion_verbose(
+                    "consider using a positional formatting argument instead",
+                    vec![
+                        (captured_arg_span, positional_args.len().to_string()),
+                        (span.shrink_to_hi(), format!(", {}", arg)),
+                    ],
+                    Applicability::MachineApplicable,
+                );
+            }
+        }
         e.emit();
         return DummyResult::raw_expr(sp, true);
     }
@@ -1318,7 +1342,7 @@ pub fn expand_preparsed_format_args(
 
     let mut cx = Context {
         ecx,
-        args,
+        args: args.into_iter().map(|arg| arg.expr).collect(),
         num_captured_args: 0,
         arg_types,
         arg_unique_types,

compiler/rustc_const_eval/src/const_eval/eval_queries.rs

@@ -13,7 +13,7 @@ use rustc_middle::mir::pretty::display_allocation;
 use rustc_middle::traits::Reveal;
 use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::ty::print::with_no_trimmed_paths;
-use rustc_middle::ty::{self, subst::Subst, EarlyBinder, TyCtxt};
+use rustc_middle::ty::{self, subst::Subst, TyCtxt};
 use rustc_span::source_map::Span;
 use rustc_target::abi::{self, Abi};
 use std::borrow::Cow;
@@ -45,7 +45,7 @@ fn eval_body_using_ecx<'mir, 'tcx>(
         "Unexpected DefKind: {:?}",
         ecx.tcx.def_kind(cid.instance.def_id())
     );
-    let layout = ecx.layout_of(EarlyBinder(body.return_ty()).subst(tcx, cid.instance.substs))?;
+    let layout = ecx.layout_of(body.bound_return_ty().subst(tcx, cid.instance.substs))?;
     assert!(!layout.is_unsized());
     let ret = ecx.allocate(layout, MemoryKind::Stack)?;
 

compiler/rustc_lint/src/unused.rs

@@ -396,6 +396,7 @@ enum UnusedDelimsCtx {
     LetScrutineeExpr,
     ArrayLenExpr,
     AnonConst,
+    MatchArmExpr,
 }
 
 impl From<UnusedDelimsCtx> for &'static str {
@@ -414,6 +415,7 @@ impl From<UnusedDelimsCtx> for &'static str {
             UnusedDelimsCtx::BlockRetValue => "block return value",
             UnusedDelimsCtx::LetScrutineeExpr => "`let` scrutinee expression",
             UnusedDelimsCtx::ArrayLenExpr | UnusedDelimsCtx::AnonConst => "const expression",
+            UnusedDelimsCtx::MatchArmExpr => "match arm expression",
         }
     }
 }
@@ -805,6 +807,18 @@ impl EarlyLintPass for UnusedParens {
                 }
                 return;
             }
+            ExprKind::Match(ref _expr, ref arm) => {
+                for a in arm {
+                    self.check_unused_delims_expr(
+                        cx,
+                        &a.body,
+                        UnusedDelimsCtx::MatchArmExpr,
+                        false,
+                        None,
+                        None,
+                    );
+                }
+            }
             _ => {}
         }
 

compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp

@@ -1311,10 +1311,15 @@ extern "C" LLVMTypeKind LLVMRustGetTypeKind(LLVMTypeRef Ty) {
     return LLVMBFloatTypeKind;
   case Type::X86_AMXTyID:
     return LLVMX86_AMXTypeKind;
-#if LLVM_VERSION_GE(15, 0)
+#if LLVM_VERSION_GE(15, 0) && LLVM_VERSION_LT(16, 0)
   case Type::DXILPointerTyID:
     report_fatal_error("Rust does not support DirectX typed pointers.");
     break;
+#endif
+#if LLVM_VERSION_GE(16, 0)
+  case Type::TypedPointerTyID:
+    report_fatal_error("Rust does not support typed pointers.");
+    break;
 #endif
   }
   report_fatal_error("Unhandled TypeID.");

compiler/rustc_middle/src/mir/mod.rs

@@ -431,6 +431,12 @@ impl<'tcx> Body<'tcx> {
         self.local_decls[RETURN_PLACE].ty
     }
 
+    /// Returns the return type; it always return first element from `local_decls` array.
+    #[inline]
+    pub fn bound_return_ty(&self) -> ty::EarlyBinder<Ty<'tcx>> {
+        ty::EarlyBinder(self.local_decls[RETURN_PLACE].ty)
+    }
+
     /// Gets the location of the terminator for the given block.
     #[inline]
     pub fn terminator_loc(&self, bb: BasicBlock) -> Location {

compiler/rustc_middle/src/ty/adt.rs

@@ -563,7 +563,7 @@ impl<'tcx> AdtDef<'tcx> {
     ///
     /// Due to normalization being eager, this applies even if
     /// the associated type is behind a pointer (e.g., issue #31299).
-    pub fn sized_constraint(self, tcx: TyCtxt<'tcx>) -> &'tcx [Ty<'tcx>] {
-        tcx.adt_sized_constraint(self.did()).0
+    pub fn sized_constraint(self, tcx: TyCtxt<'tcx>) -> ty::EarlyBinder<&'tcx [Ty<'tcx>]> {
+        ty::EarlyBinder(tcx.adt_sized_constraint(self.did()).0)
     }
 }

compiler/rustc_middle/src/ty/sty.rs

@@ -2191,7 +2191,7 @@ impl<'tcx> Ty<'tcx> {
 
             ty::Tuple(tys) => tys.iter().all(|ty| ty.is_trivially_sized(tcx)),
 
-            ty::Adt(def, _substs) => def.sized_constraint(tcx).is_empty(),
+            ty::Adt(def, _substs) => def.sized_constraint(tcx).0.is_empty(),
 
             ty::Projection(_) | ty::Param(_) | ty::Opaque(..) => false,
 

compiler/rustc_middle/src/ty/util.rs

@@ -680,6 +680,24 @@ impl<'tcx> TyCtxt<'tcx> {
     pub fn bound_const_param_default(self, def_id: DefId) -> ty::EarlyBinder<ty::Const<'tcx>> {
         ty::EarlyBinder(self.const_param_default(def_id))
     }
+
+    pub fn bound_predicates_of(
+        self,
+        def_id: DefId,
+    ) -> ty::EarlyBinder<ty::generics::GenericPredicates<'tcx>> {
+        ty::EarlyBinder(self.predicates_of(def_id))
+    }
+
+    pub fn bound_explicit_predicates_of(
+        self,
+        def_id: DefId,
+    ) -> ty::EarlyBinder<ty::generics::GenericPredicates<'tcx>> {
+        ty::EarlyBinder(self.explicit_predicates_of(def_id))
+    }
+
+    pub fn bound_impl_subject(self, def_id: DefId) -> ty::EarlyBinder<ty::ImplSubject<'tcx>> {
+        ty::EarlyBinder(self.impl_subject(def_id))
+    }
 }
 
 struct OpaqueTypeExpander<'tcx> {

compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs

@@ -617,7 +617,7 @@ impl SplitVarLenSlice {
             // The only admissible fixed-length slice is one of the array size. Whether `max_slice`
             // is fixed-length or variable-length, it will be the only relevant slice to output
             // here.
-            Some(_) => (0..0), // empty range
+            Some(_) => 0..0, // empty range
             // We cover all arities in the range `(self.arity..infinity)`. We split that range into
             // two: lengths smaller than `max_slice.arity()` are treated independently as
             // fixed-lengths slices, and lengths above are captured by `max_slice`.

compiler/rustc_mir_transform/src/const_prop.rs

@@ -18,9 +18,7 @@ use rustc_middle::mir::{
 };
 use rustc_middle::ty::layout::{LayoutError, LayoutOf, LayoutOfHelpers, TyAndLayout};
 use rustc_middle::ty::subst::{InternalSubsts, Subst};
-use rustc_middle::ty::{
-    self, ConstKind, EarlyBinder, Instance, ParamEnv, Ty, TyCtxt, TypeVisitable,
-};
+use rustc_middle::ty::{self, ConstKind, Instance, ParamEnv, Ty, TyCtxt, TypeVisitable};
 use rustc_span::{def_id::DefId, Span};
 use rustc_target::abi::{self, HasDataLayout, Size, TargetDataLayout};
 use rustc_target::spec::abi::Abi as CallAbi;
@@ -387,7 +385,7 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
         );
 
         let ret_layout = ecx
-            .layout_of(EarlyBinder(body.return_ty()).subst(tcx, substs))
+            .layout_of(body.bound_return_ty().subst(tcx, substs))
             .ok()
             // Don't bother allocating memory for large values.
             // I don't know how return types can seem to be unsized but this happens in the

compiler/rustc_mir_transform/src/const_prop_lint.rs

@@ -23,8 +23,7 @@ use rustc_middle::mir::{
 use rustc_middle::ty::layout::{LayoutError, LayoutOf, LayoutOfHelpers, TyAndLayout};
 use rustc_middle::ty::subst::{InternalSubsts, Subst};
 use rustc_middle::ty::{
-    self, ConstInt, ConstKind, EarlyBinder, Instance, ParamEnv, ScalarInt, Ty, TyCtxt,
-    TypeVisitable,
+    self, ConstInt, ConstKind, Instance, ParamEnv, ScalarInt, Ty, TyCtxt, TypeVisitable,
 };
 use rustc_session::lint;
 use rustc_span::Span;
@@ -196,7 +195,7 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
         );
 
         let ret_layout = ecx
-            .layout_of(EarlyBinder(body.return_ty()).subst(tcx, substs))
+            .layout_of(body.bound_return_ty().subst(tcx, substs))
             .ok()
             // Don't bother allocating memory for large values.
             // I don't know how return types can seem to be unsized but this happens in the

compiler/rustc_parse/src/parser/diagnostics.rs

@@ -560,7 +560,8 @@ impl<'a> Parser<'a> {
                     || (sm.is_multiline(
                         self.prev_token.span.shrink_to_hi().until(self.token.span.shrink_to_lo())
                     ) && t == &token::Pound)
-            }) {
+            }) && !expected.contains(&TokenType::Token(token::Comma))
+            {
                 // Missing semicolon typo. This is triggered if the next token could either start a
                 // new statement or is a block close. For example:
                 //