Auto merge of #9007 - flip1995:rustup, r=flip1995

Rustup

r? `@ghost`

changelog: none

clippy_lints/src/almost_complete_letter_range.rs

@@ -90,7 +90,7 @@ fn check_range(cx: &EarlyContext<'_>, span: Span, start: &Expr, end: &Expr, sugg
                     diag.span_suggestion(
                         span,
                         "use an inclusive range",
-                        sugg.to_owned(),
+                        sugg,
                         Applicability::MaybeIncorrect,
                     );
                 }

clippy_lints/src/as_underscore.rs

@@ -63,7 +63,7 @@ impl<'tcx> LateLintPass<'tcx> for AsUnderscore {
                     diag.span_suggestion(
                         ty.span,
                         "consider giving the type explicitly",
-                        format!("{}", ty_resolved),
+                        ty_resolved,
                         Applicability::MachineApplicable,
                     );
             }

clippy_lints/src/attrs.rs

@@ -340,7 +340,7 @@ impl<'tcx> LateLintPass<'tcx> for Attributes {
                             for lint in lint_list {
                                 match item.kind {
                                     ItemKind::Use(..) => {
-                                        if is_word(lint, sym!(unused_imports))
+                                        if is_word(lint, sym::unused_imports)
                                             || is_word(lint, sym::deprecated)
                                             || is_word(lint, sym!(unreachable_pub))
                                             || is_word(lint, sym!(unused))
@@ -355,7 +355,7 @@ impl<'tcx> LateLintPass<'tcx> for Attributes {
                                         }
                                     },
                                     ItemKind::ExternCrate(..) => {
-                                        if is_word(lint, sym!(unused_imports)) && skip_unused_imports {
+                                        if is_word(lint, sym::unused_imports) && skip_unused_imports {
                                             return;
                                         }
                                         if is_word(lint, sym!(unused_extern_crates)) {

clippy_lints/src/blocks_in_if_conditions.rs

@@ -51,7 +51,7 @@ struct ExVisitor<'a, 'tcx> {
 
 impl<'a, 'tcx> Visitor<'tcx> for ExVisitor<'a, 'tcx> {
     fn visit_expr(&mut self, expr: &'tcx Expr<'tcx>) {
-        if let ExprKind::Closure(_, _, eid, _, _) = expr.kind {
+        if let ExprKind::Closure { body, .. } = expr.kind {
             // do not lint if the closure is called using an iterator (see #1141)
             if_chain! {
                 if let Some(parent) = get_parent_expr(self.cx, expr);
@@ -64,7 +64,7 @@ impl<'a, 'tcx> Visitor<'tcx> for ExVisitor<'a, 'tcx> {
                 }
             }
 
-            let body = self.cx.tcx.hir().body(eid);
+            let body = self.cx.tcx.hir().body(body);
             let ex = &body.value;
             if let ExprKind::Block(block, _) = ex.kind {
                 if !body.value.span.from_expansion() && !block.stmts.is_empty() {

clippy_lints/src/bytecount.rs

@@ -51,8 +51,8 @@ impl<'tcx> LateLintPass<'tcx> for ByteCount {
             if count.ident.name == sym::count;
             if let ExprKind::MethodCall(filter, [filter_recv, filter_arg], _) = count_recv.kind;
             if filter.ident.name == sym!(filter);
-            if let ExprKind::Closure(_, _, body_id, _, _) = filter_arg.kind;
-            let body = cx.tcx.hir().body(body_id);
+            if let ExprKind::Closure { body, .. } = filter_arg.kind;
+            let body = cx.tcx.hir().body(body);
             if let [param] = body.params;
             if let PatKind::Binding(_, arg_id, _, _) = strip_pat_refs(param.pat).kind;
             if let ExprKind::Binary(ref op, l, r) = body.value.kind;

clippy_lints/src/dereference.rs

@@ -514,7 +514,7 @@ fn is_linted_explicit_deref_position(parent: Option<Node<'_>>, child_id: HirId,
         | ExprKind::Loop(..)
         | ExprKind::Match(..)
         | ExprKind::Let(..)
-        | ExprKind::Closure(..)
+        | ExprKind::Closure{..}
         | ExprKind::Block(..)
         | ExprKind::Assign(..)
         | ExprKind::AssignOp(..)

clippy_lints/src/empty_structs_with_brackets.rs

@@ -44,7 +44,7 @@ impl EarlyLintPass for EmptyStructsWithBrackets {
                     diagnostic.span_suggestion_hidden(
                         span_after_ident,
                         "remove the brackets",
-                        ";".to_string(),
+                        ";",
                         Applicability::MachineApplicable);
                     },
             );

clippy_lints/src/enum_clike.rs

@@ -50,8 +50,8 @@ impl<'tcx> LateLintPass<'tcx> for UnportableVariant {
                         .tcx
                         .const_eval_poly(def_id.to_def_id())
                         .ok()
-                        .map(|val| rustc_middle::ty::Const::from_value(cx.tcx, val, ty));
-                    if let Some(Constant::Int(val)) = constant.and_then(miri_to_const) {
+                        .map(|val| rustc_middle::mir::ConstantKind::from_value(val, ty));
+                    if let Some(Constant::Int(val)) = constant.and_then(|c| miri_to_const(cx.tcx, c)) {
                         if let ty::Adt(adt, _) = ty.kind() {
                             if adt.is_enum() {
                                 ty = adt.repr().discr_type().to_ty(cx.tcx);

clippy_lints/src/eta_reduction.rs

@@ -78,7 +78,7 @@ impl<'tcx> LateLintPass<'tcx> for EtaReduction {
             return;
         }
         let body = match expr.kind {
-            ExprKind::Closure(_, _, id, _, _) => cx.tcx.hir().body(id),
+            ExprKind::Closure { body, .. } => cx.tcx.hir().body(body),
             _ => return,
         };
         if body.value.span.from_expansion() {

clippy_lints/src/infinite_iter.rs

@@ -159,8 +159,8 @@ fn is_infinite(cx: &LateContext<'_>, expr: &Expr<'_>) -> Finiteness {
                 }
             }
             if method.ident.name == sym!(flat_map) && args.len() == 2 {
-                if let ExprKind::Closure(_, _, body_id, _, _) = args[1].kind {
-                    let body = cx.tcx.hir().body(body_id);
+                if let ExprKind::Closure { body, .. } = args[1].kind {
+                    let body = cx.tcx.hir().body(body);
                     return is_infinite(cx, &body.value);
                 }
             }

clippy_lints/src/large_const_arrays.rs

@@ -3,7 +3,6 @@ use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::{Item, ItemKind};
 use rustc_lint::{LateContext, LateLintPass};
-use rustc_middle::mir::interpret::ConstValue;
 use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::ty::{self, ConstKind};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
@@ -54,8 +53,8 @@ impl<'tcx> LateLintPass<'tcx> for LargeConstArrays {
             if let ItemKind::Const(hir_ty, _) = &item.kind;
             let ty = hir_ty_to_ty(cx.tcx, hir_ty);
             if let ty::Array(element_type, cst) = ty.kind();
-            if let ConstKind::Value(ConstValue::Scalar(element_count)) = cst.val();
-            if let Ok(element_count) = element_count.to_machine_usize(&cx.tcx);
+            if let ConstKind::Value(ty::ValTree::Leaf(element_count)) = cst.kind();
+            if let Ok(element_count) = element_count.try_to_machine_usize(cx.tcx);
             if let Ok(element_size) = cx.layout_of(*element_type).map(|l| l.size.bytes());
             if self.maximum_allowed_size < element_count * element_size;
 
@@ -76,7 +75,7 @@ impl<'tcx> LateLintPass<'tcx> for LargeConstArrays {
                         diag.span_suggestion(
                             sugg_span,
                             "make this a static item",
-                            "static".to_string(),
+                            "static",
                             Applicability::MachineApplicable,
                         );
                     }

clippy_lints/src/large_stack_arrays.rs

@@ -3,7 +3,6 @@ use clippy_utils::source::snippet;
 use if_chain::if_chain;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
-use rustc_middle::mir::interpret::ConstValue;
 use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::ty::{self, ConstKind};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
@@ -43,8 +42,8 @@ impl<'tcx> LateLintPass<'tcx> for LargeStackArrays {
         if_chain! {
             if let ExprKind::Repeat(_, _) = expr.kind;
             if let ty::Array(element_type, cst) = cx.typeck_results().expr_ty(expr).kind();
-            if let ConstKind::Value(ConstValue::Scalar(element_count)) = cst.val();
-            if let Ok(element_count) = element_count.to_machine_usize(&cx.tcx);
+            if let ConstKind::Value(ty::ValTree::Leaf(element_count)) = cst.kind();
+            if let Ok(element_count) = element_count.try_to_machine_usize(cx.tcx);
             if let Ok(element_size) = cx.layout_of(*element_type).map(|l| l.size.bytes());
             if self.maximum_allowed_size < element_count * element_size;
             then {

clippy_lints/src/loops/needless_range_loop.rs

@@ -369,8 +369,8 @@ impl<'a, 'tcx> Visitor<'tcx> for VarVisitor<'a, 'tcx> {
                     self.visit_expr(expr);
                 }
             },
-            ExprKind::Closure(_, _, body_id, ..) => {
-                let body = self.cx.tcx.hir().body(body_id);
+            ExprKind::Closure { body, .. } => {
+                let body = self.cx.tcx.hir().body(body);
                 self.visit_expr(&body.value);
             },
             _ => walk_expr(self, expr),

clippy_lints/src/loops/never_loop.rs

@@ -188,7 +188,7 @@ fn never_loop_expr(expr: &Expr<'_>, main_loop_id: HirId) -> NeverLoopResult {
             })
             .fold(NeverLoopResult::Otherwise, combine_both),
         ExprKind::Yield(_, _)
-        | ExprKind::Closure(_, _, _, _, _)
+        | ExprKind::Closure { .. }
         | ExprKind::Path(_)
         | ExprKind::ConstBlock(_)
         | ExprKind::Lit(_)

clippy_lints/src/loops/while_let_on_iterator.rs

@@ -220,7 +220,7 @@ fn uses_iter<'tcx>(cx: &LateContext<'tcx>, iter_expr: &IterExpr, container: &'tc
                 if let Some(e) = e {
                     self.visit_expr(e);
                 }
-            } else if let ExprKind::Closure(_, _, id, _, _) = e.kind {
+            } else if let ExprKind::Closure { body: id, .. } = e.kind {
                 if is_res_used(self.cx, self.iter_expr.path, id) {
                     self.uses_iter = true;
                 }
@@ -260,7 +260,7 @@ fn needs_mutable_borrow(cx: &LateContext<'_>, iter_expr: &IterExpr, loop_expr: &
                     if let Some(e) = e {
                         self.visit_expr(e);
                     }
-                } else if let ExprKind::Closure(_, _, id, _, _) = e.kind {
+                } else if let ExprKind::Closure { body: id, .. } = e.kind {
                     self.used_iter = is_res_used(self.cx, self.iter_expr.path, id);
                 } else {
                     walk_expr(self, e);
@@ -307,7 +307,7 @@ fn needs_mutable_borrow(cx: &LateContext<'_>, iter_expr: &IterExpr, loop_expr: &
                     if let Some(e) = e {
                         self.visit_expr(e);
                     }
-                } else if let ExprKind::Closure(_, _, id, _, _) = e.kind {
+                } else if let ExprKind::Closure { body: id, .. } = e.kind {
                     self.used_after = is_res_used(self.cx, self.iter_expr.path, id);
                 } else {
                     walk_expr(self, e);

clippy_lints/src/manual_async_fn.rs

@@ -86,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualAsyncFn {
                                 diag.span_suggestion(
                                     block.span,
                                     "move the body of the async block to the enclosing function",
-                                    body_snip.to_string(),
+                                    body_snip,
                                     Applicability::MachineApplicable
                                 );
                             }
@@ -177,8 +177,8 @@ fn desugared_async_block<'tcx>(cx: &LateContext<'tcx>, block: &'tcx Block<'tcx>)
         if let Some(block_expr) = block.expr;
         if let Some(args) = match_function_call(cx, block_expr, &FUTURE_FROM_GENERATOR);
         if args.len() == 1;
-        if let Expr{kind: ExprKind::Closure(_, _, body_id, ..), ..} = args[0];
-        let closure_body = cx.tcx.hir().body(body_id);
+        if let Expr{kind: ExprKind::Closure { body, .. }, ..} = args[0];
+        let closure_body = cx.tcx.hir().body(body);
         if closure_body.generator_kind == Some(GeneratorKind::Async(AsyncGeneratorKind::Block));
         then {
             return Some(closure_body);

clippy_lints/src/manual_ok_or.rs

@@ -88,8 +88,8 @@ fn is_ok_wrapping(cx: &LateContext<'_>, map_expr: &Expr<'_>) -> bool {
         }
     }
     if_chain! {
-        if let ExprKind::Closure(_, _, body_id, ..) = map_expr.kind;
-        let body = cx.tcx.hir().body(body_id);
+        if let ExprKind::Closure { body, .. } = map_expr.kind;
+        let body = cx.tcx.hir().body(body);
         if let PatKind::Binding(_, param_id, ..) = body.params[0].pat.kind;
         if let ExprKind::Call(Expr { kind: ExprKind::Path(ok_path), .. }, &[ref ok_arg]) = body.value.kind;
         if is_lang_ctor(cx, ok_path, ResultOk);

clippy_lints/src/map_clone.rs

@@ -67,9 +67,9 @@ impl<'tcx> LateLintPass<'tcx> for MapClone {
             if method.ident.name == sym::map;
             let ty = cx.typeck_results().expr_ty(&args[0]);
             if is_type_diagnostic_item(cx, ty, sym::Option) || is_trait_method(cx, e, sym::Iterator);
-            if let hir::ExprKind::Closure(_, _, body_id, _, _) = args[1].kind;
+            if let hir::ExprKind::Closure { body, .. } = args[1].kind;
             then {
-                let closure_body = cx.tcx.hir().body(body_id);
+                let closure_body = cx.tcx.hir().body(body);
                 let closure_expr = peel_blocks(&closure_body.value);
                 match closure_body.params[0].pat.kind {
                     hir::PatKind::Ref(inner, hir::Mutability::Not) => if let hir::PatKind::Binding(

clippy_lints/src/map_err_ignore.rs

@@ -117,12 +117,19 @@ impl<'tcx> LateLintPass<'tcx> for MapErrIgnore {
             // only work if the method name is `map_err` and there are only 2 arguments (e.g. x.map_err(|_|[1]
             // Enum::Variant[2]))
             if method.ident.as_str() == "map_err" && args.len() == 2 {
-                // make sure the first argument is a closure, and grab the CaptureRef, body_id, and body_span fields
-                if let ExprKind::Closure(capture, _, body_id, body_span, _) = args[1].kind {
+                // make sure the first argument is a closure, and grab the CaptureRef, BodyId, and fn_decl_span
+                // fields
+                if let ExprKind::Closure {
+                    capture_clause,
+                    body,
+                    fn_decl_span,
+                    ..
+                } = args[1].kind
+                {
                     // check if this is by Reference (meaning there's no move statement)
-                    if capture == CaptureBy::Ref {
+                    if capture_clause == CaptureBy::Ref {
                         // Get the closure body to check the parameters and values
-                        let closure_body = cx.tcx.hir().body(body_id);
+                        let closure_body = cx.tcx.hir().body(body);
                         // make sure there's only one parameter (`|_|`)
                         if closure_body.params.len() == 1 {
                             // make sure that parameter is the wild token (`_`)
@@ -132,7 +139,7 @@ impl<'tcx> LateLintPass<'tcx> for MapErrIgnore {
                                 span_lint_and_help(
                                     cx,
                                     MAP_ERR_IGNORE,
-                                    body_span,
+                                    fn_decl_span,
                                     "`map_err(|_|...` wildcard pattern discards the original error",
                                     None,
                                     "consider storing the original error as a source in the new error, or silence this warning using an ignored identifier (`.map_err(|_foo| ...`)",

clippy_lints/src/map_unit_fn.rs

@@ -169,12 +169,12 @@ fn unit_closure<'tcx>(
     expr: &hir::Expr<'_>,
 ) -> Option<(&'tcx hir::Param<'tcx>, &'tcx hir::Expr<'tcx>)> {
     if_chain! {
-        if let hir::ExprKind::Closure(_, decl, inner_expr_id, _, _) = expr.kind;
-        let body = cx.tcx.hir().body(inner_expr_id);
+        if let hir::ExprKind::Closure { fn_decl, body, .. } = expr.kind;
+        let body = cx.tcx.hir().body(body);
         let body_expr = &body.value;
-        if decl.inputs.len() == 1;
+        if fn_decl.inputs.len() == 1;
         if is_unit_expression(cx, body_expr);
-        if let Some(binding) = iter_input_pats(decl, body).next();
+        if let Some(binding) = iter_input_pats(fn_decl, body).next();
         then {
             return Some((binding, body_expr));
         }

clippy_lints/src/matches/match_same_arms.rs

@@ -110,14 +110,9 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>]) {
                 arm1.span,
                 "this match arm has an identical body to the `_` wildcard arm",
                 |diag| {
-                    diag.span_suggestion(
-                        arm1.span,
-                        "try removing the arm",
-                        String::new(),
-                        Applicability::MaybeIncorrect,
-                    )
-                    .help("or try changing either arm body")
-                    .span_note(arm2.span, "`_` wildcard arm here");
+                    diag.span_suggestion(arm1.span, "try removing the arm", "", Applicability::MaybeIncorrect)
+                        .help("or try changing either arm body")
+                        .span_note(arm2.span, "`_` wildcard arm here");
                 },
             );
         } else {

clippy_lints/src/matches/match_single_binding.rs

@@ -177,7 +177,7 @@ fn sugg_with_curlies<'a>(
 
     let (mut cbrace_start, mut cbrace_end) = (String::new(), String::new());
     if let Some(parent_expr) = get_parent_expr(cx, match_expr) {
-        if let ExprKind::Closure(..) = parent_expr.kind {
+        if let ExprKind::Closure { .. } = parent_expr.kind {
             cbrace_end = format!("\n{}}}", indent);
             // Fix body indent due to the closure
             indent = " ".repeat(indent_of(cx, bind_names).unwrap_or(0));

clippy_lints/src/matches/overlapping_arms.rs

@@ -3,6 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_note;
 use core::cmp::Ordering;
 use rustc_hir::{Arm, Expr, PatKind, RangeEnd};
 use rustc_lint::LateContext;
+use rustc_middle::mir;
 use rustc_middle::ty::Ty;
 use rustc_span::Span;
 
@@ -34,11 +35,25 @@ fn all_ranges<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>], ty: Ty<'tcx>)
                 if let PatKind::Range(ref lhs, ref rhs, range_end) = pat.kind {
                     let lhs_const = match lhs {
                         Some(lhs) => constant(cx, cx.typeck_results(), lhs)?.0,
-                        None => miri_to_const(ty.numeric_min_val(cx.tcx)?)?,
+                        None => {
+                            let min_val_const = ty.numeric_min_val(cx.tcx)?;
+                            let min_constant = mir::ConstantKind::from_value(
+                                cx.tcx.valtree_to_const_val((ty, min_val_const.to_valtree())),
+                                ty,
+                            );
+                            miri_to_const(cx.tcx, min_constant)?
+                        },
                     };
                     let rhs_const = match rhs {
                         Some(rhs) => constant(cx, cx.typeck_results(), rhs)?.0,
-                        None => miri_to_const(ty.numeric_max_val(cx.tcx)?)?,
+                        None => {
+                            let max_val_const = ty.numeric_max_val(cx.tcx)?;
+                            let max_constant = mir::ConstantKind::from_value(
+                                cx.tcx.valtree_to_const_val((ty, max_val_const.to_valtree())),
+                                ty,
+                            );
+                            miri_to_const(cx.tcx, max_constant)?
+                        },
                     };
                     let lhs_val = lhs_const.int_value(cx, ty)?;
                     let rhs_val = rhs_const.int_value(cx, ty)?;

clippy_lints/src/matches/redundant_pattern_match.rs

@@ -70,7 +70,7 @@ fn temporaries_need_ordered_drop<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<
                         }
                     }
                 },
-                // the base type is alway taken by reference.
+                // the base type is always taken by reference.
                 // e.g. In `(vec![0])[0]` the vector is a temporary value.
                 ExprKind::Index(base, index) => {
                     if !matches!(base.kind, ExprKind::Path(_)) {