Merge remote-tracking branch 'upstream/master' into rustup

CHANGELOG.md

@@ -2772,6 +2772,7 @@ Released 2018-09-13
 [`same_item_push`]: https://rust-lang.github.io/rust-clippy/master/index.html#same_item_push
 [`search_is_some`]: https://rust-lang.github.io/rust-clippy/master/index.html#search_is_some
 [`self_assignment`]: https://rust-lang.github.io/rust-clippy/master/index.html#self_assignment
+[`self_named_constructor`]: https://rust-lang.github.io/rust-clippy/master/index.html#self_named_constructor
 [`semicolon_if_nothing_returned`]: https://rust-lang.github.io/rust-clippy/master/index.html#semicolon_if_nothing_returned
 [`serde_api_misuse`]: https://rust-lang.github.io/rust-clippy/master/index.html#serde_api_misuse
 [`shadow_reuse`]: https://rust-lang.github.io/rust-clippy/master/index.html#shadow_reuse

clippy_lints/src/assign_ops.rs

@@ -1,8 +1,8 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet_opt;
 use clippy_utils::ty::implements_trait;
-use clippy_utils::{eq_expr_value, get_trait_def_id, trait_ref_of_method};
+use clippy_utils::{binop_traits, sugg};
-use clippy_utils::{higher, paths, sugg};
+use clippy_utils::{eq_expr_value, trait_ref_of_method};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir as hir;
@@ -85,71 +85,34 @@ impl<'tcx> LateLintPass<'tcx> for AssignOps {
                     let lint = |assignee: &hir::Expr<'_>, rhs: &hir::Expr<'_>| {
                         let ty = cx.typeck_results().expr_ty(assignee);
                         let rty = cx.typeck_results().expr_ty(rhs);
-                        macro_rules! ops {
+                        if_chain! {
-                            ($op:expr,
+                            if let Some((_, lang_item)) = binop_traits(op.node);
-                             $cx:expr,
+                            if let Ok(trait_id) = cx.tcx.lang_items().require(lang_item);
-                             $ty:expr,
+                            let parent_fn = cx.tcx.hir().get_parent_item(e.hir_id);
-                             $rty:expr,
+                            if trait_ref_of_method(cx, parent_fn)
-                             $($trait_name:ident),+) => {
+                                .map_or(true, |t| t.path.res.def_id() != trait_id);
-                                match $op {
+                            if implements_trait(cx, ty, trait_id, &[rty.into()]);
-                                    $(hir::BinOpKind::$trait_name => {
+                            then {
-                                        let [krate, module] = paths::OPS_MODULE;
+                                span_lint_and_then(
-                                        let path: [&str; 3] = [krate, module, concat!(stringify!($trait_name), "Assign")];
+                                    cx,
-                                        let trait_id = if let Some(trait_id) = get_trait_def_id($cx, &path) {
+                                    ASSIGN_OP_PATTERN,
-                                            trait_id
+                                    expr.span,
-                                        } else {
+                                    "manual implementation of an assign operation",
-                                            return; // useless if the trait doesn't exist
+                                    |diag| {
-                                        };
+                                        if let (Some(snip_a), Some(snip_r)) =
-                                        // check that we are not inside an `impl AssignOp` of this exact operation
+                                            (snippet_opt(cx, assignee.span), snippet_opt(cx, rhs.span))
-                                        let parent_fn = cx.tcx.hir().get_parent_item(e.hir_id);
+                                        {
-                                        if_chain! {
+                                            diag.span_suggestion(
-                                            if let Some(trait_ref) = trait_ref_of_method(cx, parent_fn);
+                                                expr.span,
-                                            if trait_ref.path.res.def_id() == trait_id;
+                                                "replace it with",
-                                            then { return; }
+                                                format!("{} {}= {}", snip_a, op.node.as_str(), snip_r),
+                                                Applicability::MachineApplicable,
+                                            );
                                         }
-                                        implements_trait($cx, $ty, trait_id, &[$rty])
+                                    },
-                                    },)*
+                                );
-                                    _ => false,
-                                }
                             }
                         }
-                        if ops!(
-                            op.node,
-                            cx,
-                            ty,
-                            rty.into(),
-                            Add,
-                            Sub,
-                            Mul,
-                            Div,
-                            Rem,
-                            And,
-                            Or,
-                            BitAnd,
-                            BitOr,
-                            BitXor,
-                            Shr,
-                            Shl
-                        ) {
-                            span_lint_and_then(
-                                cx,
-                                ASSIGN_OP_PATTERN,
-                                expr.span,
-                                "manual implementation of an assign operation",
-                                |diag| {
-                                    if let (Some(snip_a), Some(snip_r)) =
-                                        (snippet_opt(cx, assignee.span), snippet_opt(cx, rhs.span))
-                                    {
-                                        diag.span_suggestion(
-                                            expr.span,
-                                            "replace it with",
-                                            format!("{} {}= {}", snip_a, op.node.as_str(), snip_r),
-                                            Applicability::MachineApplicable,
-                                        );
-                                    }
-                                },
-                            );
-                        }
                     };
 
                     let mut visitor = ExprVisitor {
@@ -206,7 +169,7 @@ fn lint_misrefactored_assign_op(
             if let (Some(snip_a), Some(snip_r)) = (snippet_opt(cx, assignee.span), snippet_opt(cx, rhs_other.span)) {
                 let a = &sugg::Sugg::hir(cx, assignee, "..");
                 let r = &sugg::Sugg::hir(cx, rhs, "..");
-                let long = format!("{} = {}", snip_a, sugg::make_binop(higher::binop(op.node), a, r));
+                let long = format!("{} = {}", snip_a, sugg::make_binop(op.node.into(), a, r));
                 diag.span_suggestion(
                     expr.span,
                     &format!(

clippy_lints/src/eq_op.rs

@@ -102,7 +102,7 @@ impl<'tcx> LateLintPass<'tcx> for EqOp {
             if macro_with_not_op(&left.kind) || macro_with_not_op(&right.kind) {
                 return;
             }
-            if is_useless_with_eq_exprs(higher::binop(op.node)) && eq_expr_value(cx, left, right) {
+            if is_useless_with_eq_exprs(op.node.into()) && eq_expr_value(cx, left, right) {
                 span_lint(
                     cx,
                     EQ_OP,

clippy_lints/src/implicit_hasher.rs

@@ -1,5 +1,3 @@
-#![cfg_attr(bootstrap, allow(rustc::default_hash_types))]
-
 use std::borrow::Cow;
 use std::collections::BTreeMap;
 

clippy_lints/src/lib.rs

@@ -330,6 +330,7 @@ mod regex;
 mod repeat_once;
 mod returns;
 mod self_assignment;
+mod self_named_constructor;
 mod semicolon_if_nothing_returned;
 mod serde_api;
 mod shadow;
@@ -900,6 +901,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         returns::LET_AND_RETURN,
         returns::NEEDLESS_RETURN,
         self_assignment::SELF_ASSIGNMENT,
+        self_named_constructor::SELF_NAMED_CONSTRUCTOR,
         semicolon_if_nothing_returned::SEMICOLON_IF_NOTHING_RETURNED,
         serde_api::SERDE_API_MISUSE,
         shadow::SHADOW_REUSE,
@@ -1406,6 +1408,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(returns::LET_AND_RETURN),
         LintId::of(returns::NEEDLESS_RETURN),
         LintId::of(self_assignment::SELF_ASSIGNMENT),
+        LintId::of(self_named_constructor::SELF_NAMED_CONSTRUCTOR),
         LintId::of(serde_api::SERDE_API_MISUSE),
         LintId::of(single_component_path_imports::SINGLE_COMPONENT_PATH_IMPORTS),
         LintId::of(size_of_in_element_count::SIZE_OF_IN_ELEMENT_COUNT),
@@ -1559,6 +1562,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES),
         LintId::of(returns::LET_AND_RETURN),
         LintId::of(returns::NEEDLESS_RETURN),
+        LintId::of(self_named_constructor::SELF_NAMED_CONSTRUCTOR),
         LintId::of(single_component_path_imports::SINGLE_COMPONENT_PATH_IMPORTS),
         LintId::of(tabs_in_doc_comments::TABS_IN_DOC_COMMENTS),
         LintId::of(to_digit_is_some::TO_DIGIT_IS_SOME),
@@ -2101,6 +2105,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     let scripts = conf.allowed_scripts.clone();
     store.register_early_pass(move || box disallowed_script_idents::DisallowedScriptIdents::new(&scripts));
     store.register_late_pass(|| box strlen_on_c_strings::StrlenOnCStrings);
+    store.register_late_pass(move || box self_named_constructor::SelfNamedConstructor);
 }
 
 #[rustfmt::skip]

clippy_lints/src/loops/manual_memcpy.rs

@@ -204,11 +204,8 @@ struct MinifyingSugg<'a>(Sugg<'a>);
 
 impl<'a> MinifyingSugg<'a> {
     fn as_str(&self) -> &str {
-        // HACK: Don't sync to Clippy! Required because something with the `or_patterns` feature
+        let (Sugg::NonParen(s) | Sugg::MaybeParen(s) | Sugg::BinOp(_, s)) = &self.0;
-        // changed and this would now require parentheses.
+        s.as_ref()
-        match &self.0 {
-            Sugg::NonParen(s) | Sugg::MaybeParen(s) | Sugg::BinOp(_, s) => s.as_ref(),
-        }
     }
 
     fn into_sugg(self) -> Sugg<'a> {

clippy_lints/src/matches.rs

@@ -721,7 +721,7 @@ fn check_single_match_single_pattern(
     expr: &Expr<'_>,
     els: Option<&Expr<'_>>,
 ) {
-    if is_wild(&arms[1].pat) {
+    if is_wild(arms[1].pat) {
         report_single_match_single_pattern(cx, ex, arms, expr, els);
     }
 }
@@ -1287,7 +1287,7 @@ fn find_matches_sugg(cx: &LateContext<'_>, ex: &Expr<'_>, arms: &[Arm<'_>], expr
         if let Some((b1_arm, b0_arms)) = arms.split_last();
         if let Some(b0) = find_bool_lit(&b0_arms[0].body.kind, desugared);
         if let Some(b1) = find_bool_lit(&b1_arm.body.kind, desugared);
-        if is_wild(&b1_arm.pat);
+        if is_wild(b1_arm.pat);
         if b0 != b1;
         let if_guard = &b0_arms[0].guard;
         if if_guard.is_none() || b0_arms.len() == 1;

clippy_lints/src/missing_doc.rs

@@ -7,7 +7,8 @@
 
 use clippy_utils::attrs::is_doc_hidden;
 use clippy_utils::diagnostics::span_lint;
-use rustc_ast::ast;
+use if_chain::if_chain;
+use rustc_ast::ast::{self, MetaItem, MetaItemKind};
 use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::ty;
@@ -55,6 +56,20 @@ impl MissingDoc {
         *self.doc_hidden_stack.last().expect("empty doc_hidden_stack")
     }
 
+    fn has_include(meta: Option<MetaItem>) -> bool {
+        if_chain! {
+            if let Some(meta) = meta;
+            if let MetaItemKind::List(list) = meta.kind;
+            if let Some(meta) = list.get(0);
+            if let Some(name) = meta.ident();
+            then {
+                name.name == sym::include
+            } else {
+                false
+            }
+        }
+    }
+
     fn check_missing_docs_attrs(
         &self,
         cx: &LateContext<'_>,
@@ -80,7 +95,7 @@ impl MissingDoc {
 
         let has_doc = attrs
             .iter()
-            .any(|a| a.doc_str().is_some());
+            .any(|a| a.doc_str().is_some() || Self::has_include(a.meta()));
         if !has_doc {
             span_lint(
                 cx,

clippy_lints/src/mutable_debug_assertion.rs

@@ -87,10 +87,6 @@ impl<'a, 'tcx> Visitor<'tcx> for MutArgVisitor<'a, 'tcx> {
                 self.found = true;
                 return;
             },
-            ExprKind::If(..) => {
-                self.found = true;
-                return;
-            },
             ExprKind::Path(_) => {
                 if let Some(adj) = self.cx.typeck_results().adjustments().get(expr.hir_id) {
                     if adj

clippy_lints/src/non_expressive_names.rs

@@ -1,7 +1,6 @@
 use clippy_utils::diagnostics::{span_lint, span_lint_and_then};
 use rustc_ast::ast::{
-    Arm, AssocItem, AssocItemKind, Attribute, Block, FnDecl, FnKind, Item, ItemKind, Local, Pat,
+    Arm, AssocItem, AssocItemKind, Attribute, Block, FnDecl, FnKind, Item, ItemKind, Local, Pat, PatKind,
-    PatKind,
 };
 use rustc_ast::visit::{walk_block, walk_expr, walk_pat, Visitor};
 use rustc_lint::{EarlyContext, EarlyLintPass};

clippy_lints/src/redundant_clone.rs

@@ -724,7 +724,7 @@ fn rvalue_locals(rvalue: &mir::Rvalue<'_>, mut visit: impl FnMut(mir::Local)) {
         BinaryOp(_, box (lhs, rhs)) | CheckedBinaryOp(_, box (lhs, rhs)) => {
             visit_op(lhs);
             visit_op(rhs);
-        }
+        },
         _ => (),
     }
 }

clippy_lints/src/self_named_constructor.rs

@@ -0,0 +1,91 @@
+use clippy_utils::diagnostics::span_lint;
+use clippy_utils::return_ty;
+use clippy_utils::ty::{contains_adt_constructor, contains_ty};
+use rustc_hir::{Impl, ImplItem, ImplItemKind, ItemKind, Node};
+use rustc_lint::{LateContext, LateLintPass};
+use rustc_session::{declare_lint_pass, declare_tool_lint};
+
+declare_clippy_lint! {
+    /// **What it does:** Warns when constructors have the same name as their types.
+    ///
+    /// **Why is this bad?** Repeating the name of the type is redundant.
+    ///
+    /// **Known problems:** None.
+    ///
+    /// **Example:**
+    ///
+    /// ```rust,ignore
+    /// struct Foo {}
+    ///
+    /// impl Foo {
+    ///     pub fn foo() -> Foo {
+    ///         Foo {}
+    ///     }
+    /// }
+    /// ```
+    /// Use instead:
+    /// ```rust,ignore
+    /// struct Foo {}
+    ///
+    /// impl Foo {
+    ///     pub fn new() -> Foo {
+    ///         Foo {}
+    ///     }
+    /// }
+    /// ```
+    pub SELF_NAMED_CONSTRUCTOR,
+    style,
+    "method should not have the same name as the type it is implemented for"
+}
+
+declare_lint_pass!(SelfNamedConstructor => [SELF_NAMED_CONSTRUCTOR]);
+
+impl<'tcx> LateLintPass<'tcx> for SelfNamedConstructor {
+    fn check_impl_item(&mut self, cx: &LateContext<'tcx>, impl_item: &'tcx ImplItem<'_>) {
+        match impl_item.kind {
+            ImplItemKind::Fn(ref sig, _) => {
+                if sig.decl.implicit_self.has_implicit_self() {
+                    return;
+                }
+            },
+            _ => return,
+        }
+
+        let parent = cx.tcx.hir().get_parent_item(impl_item.hir_id());
+        let item = cx.tcx.hir().expect_item(parent);
+        let self_ty = cx.tcx.type_of(item.def_id);
+        let ret_ty = return_ty(cx, impl_item.hir_id());
+
+        // Do not check trait impls
+        if matches!(item.kind, ItemKind::Impl(Impl { of_trait: Some(_), .. })) {
+            return;
+        }
+
+        // Ensure method is constructor-like
+        if let Some(self_adt) = self_ty.ty_adt_def() {
+            if !contains_adt_constructor(ret_ty, self_adt) {
+                return;
+            }
+        } else if !contains_ty(ret_ty, self_ty) {
+            return;
+        }
+
+        if_chain! {
+            if let Some(self_def) = self_ty.ty_adt_def();
+            if let Some(self_local_did) = self_def.did.as_local();
+            let self_id = cx.tcx.hir().local_def_id_to_hir_id(self_local_did);
+            if let Some(Node::Item(x)) = cx.tcx.hir().find(self_id);
+            let type_name = x.ident.name.as_str().to_lowercase();
+            if impl_item.ident.name.as_str() == type_name || impl_item.ident.name.as_str().replace("_", "") == type_name;
+
+            then {
+                span_lint(
+                    cx,
+                    SELF_NAMED_CONSTRUCTOR,
+                    impl_item.span,
+                    &format!("constructor `{}` has the same name as the type", impl_item.ident.name),
+                );
+            }
+        }
+    }
+}

clippy_lints/src/suspicious_trait_impl.rs

@@ -1,5 +1,5 @@
 use clippy_utils::diagnostics::span_lint;
-use clippy_utils::{get_trait_def_id, paths, trait_ref_of_method};
+use clippy_utils::{binop_traits, trait_ref_of_method, BINOP_TRAITS, OP_ASSIGN_TRAITS};
 use if_chain::if_chain;
 use rustc_hir as hir;
 use rustc_hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
@@ -55,135 +55,48 @@ declare_lint_pass!(SuspiciousImpl => [SUSPICIOUS_ARITHMETIC_IMPL, SUSPICIOUS_OP_
 
 impl<'tcx> LateLintPass<'tcx> for SuspiciousImpl {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) {
-        if let hir::ExprKind::Binary(binop, _, _) | hir::ExprKind::AssignOp(binop, ..) = expr.kind {
+        if_chain! {
-            match binop.node {
+            if let hir::ExprKind::Binary(binop, _, _) | hir::ExprKind::AssignOp(binop, ..) = expr.kind;
-                hir::BinOpKind::Eq
+            if let Some((binop_trait_lang, op_assign_trait_lang)) = binop_traits(binop.node);
-                | hir::BinOpKind::Lt
+            if let Ok(binop_trait_id) = cx.tcx.lang_items().require(binop_trait_lang);
-                | hir::BinOpKind::Le
+            if let Ok(op_assign_trait_id) = cx.tcx.lang_items().require(op_assign_trait_lang);
-                | hir::BinOpKind::Ne
-                | hir::BinOpKind::Ge
-                | hir::BinOpKind::Gt => return,
-                _ => {},
-            }
 
             // Check for more than one binary operation in the implemented function
             // Linting when multiple operations are involved can result in false positives
             let parent_fn = cx.tcx.hir().get_parent_item(expr.hir_id);
-            if_chain! {
+            if let hir::Node::ImplItem(impl_item) = cx.tcx.hir().get(parent_fn);
-                if let hir::Node::ImplItem(impl_item) = cx.tcx.hir().get(parent_fn);
+            if let hir::ImplItemKind::Fn(_, body_id) = impl_item.kind;
-                if let hir::ImplItemKind::Fn(_, body_id) = impl_item.kind;
+            let body = cx.tcx.hir().body(body_id);
-                then {
+            let parent_fn = cx.tcx.hir().get_parent_item(expr.hir_id);
-                    let body = cx.tcx.hir().body(body_id);
+            if let Some(trait_ref) = trait_ref_of_method(cx, parent_fn);
-                    let mut visitor = BinaryExprVisitor { nb_binops: 0 };
+            let trait_id = trait_ref.path.res.def_id();
-                    walk_expr(&mut visitor, &body.value);
+            if ![binop_trait_id, op_assign_trait_id].contains(&trait_id);
-                    if visitor.nb_binops > 1 {
+            if let Some(&(_, lint)) = [
-                        return;
+                (&BINOP_TRAITS, SUSPICIOUS_ARITHMETIC_IMPL),
-                    }
+                (&OP_ASSIGN_TRAITS, SUSPICIOUS_OP_ASSIGN_IMPL),
-                }
+            ]
-            }
+                .iter()
-
+                .find(|&(ts, _)| ts.iter().any(|&t| Ok(trait_id) == cx.tcx.lang_items().require(t)));
-            if let Some(impl_trait) = check_binop(
+            if count_binops(&body.value) == 1;
-                cx,
+            then {
-                expr,
-                binop.node,
-                &[
-                    "Add", "Sub", "Mul", "Div", "Rem", "BitAnd", "BitOr", "BitXor", "Shl", "Shr",
-                ],
-                &[
-                    hir::BinOpKind::Add,
-                    hir::BinOpKind::Sub,
-                    hir::BinOpKind::Mul,
-                    hir::BinOpKind::Div,
-                    hir::BinOpKind::Rem,
-                    hir::BinOpKind::BitAnd,
-                    hir::BinOpKind::BitOr,
-                    hir::BinOpKind::BitXor,
-                    hir::BinOpKind::Shl,
-                    hir::BinOpKind::Shr,
-                ],
-            ) {
                 span_lint(
                     cx,
-                    SUSPICIOUS_ARITHMETIC_IMPL,
+                    lint,
                     binop.span,
-                    &format!("suspicious use of binary operator in `{}` impl", impl_trait),
+                    &format!("suspicious use of `{}` in `{}` impl", binop.node.as_str(), cx.tcx.item_name(trait_id)),
-                );
-            }
-
-            if let Some(impl_trait) = check_binop(
-                cx,
-                expr,
-                binop.node,
-                &[
-                    "AddAssign",
-                    "SubAssign",
-                    "MulAssign",
-                    "DivAssign",
-                    "BitAndAssign",
-                    "BitOrAssign",
-                    "BitXorAssign",
-                    "RemAssign",
-                    "ShlAssign",
-                    "ShrAssign",
-                ],
-                &[
-                    hir::BinOpKind::Add,
-                    hir::BinOpKind::Sub,
-                    hir::BinOpKind::Mul,
-                    hir::BinOpKind::Div,
-                    hir::BinOpKind::BitAnd,
-                    hir::BinOpKind::BitOr,
-                    hir::BinOpKind::BitXor,
-                    hir::BinOpKind::Rem,
-                    hir::BinOpKind::Shl,
-                    hir::BinOpKind::Shr,
-                ],
-            ) {
-                span_lint(
-                    cx,
-                    SUSPICIOUS_OP_ASSIGN_IMPL,
-                    binop.span,
-                    &format!("suspicious use of binary operator in `{}` impl", impl_trait),
                 );
             }
         }
     }
 }
 
-fn check_binop(
+fn count_binops(expr: &hir::Expr<'_>) -> u32 {
-    cx: &LateContext<'_>,
+    let mut visitor = BinaryExprVisitor::default();
-    expr: &hir::Expr<'_>,
+    visitor.visit_expr(expr);
-    binop: hir::BinOpKind,
+    visitor.nb_binops
-    traits: &[&'static str],
-    expected_ops: &[hir::BinOpKind],
-) -> Option<&'static str> {
-    let mut trait_ids = vec![];
-    let [krate, module] = paths::OPS_MODULE;
-
-    for &t in traits {
-        let path = [krate, module, t];
-        if let Some(trait_id) = get_trait_def_id(cx, &path) {
-            trait_ids.push(trait_id);
-        } else {
-            return None;
-        }
-    }
-
-    // Get the actually implemented trait
-    let parent_fn = cx.tcx.hir().get_parent_item(expr.hir_id);
-
-    if_chain! {
-        if let Some(trait_ref) = trait_ref_of_method(cx, parent_fn);
-        if let Some(idx) = trait_ids.iter().position(|&tid| tid == trait_ref.path.res.def_id());
-        if binop != expected_ops[idx];
-        then{
-            return Some(traits[idx])
-        }
-    }
-
-    None
 }
 
+#[derive(Default)]
 struct BinaryExprVisitor {
     nb_binops: u32,
 }

clippy_lints/src/zero_sized_map_values.rs

@@ -4,7 +4,7 @@ use clippy_utils::ty::{is_normalizable, is_type_diagnostic_item, match_type};
 use if_chain::if_chain;
 use rustc_hir::{self as hir, HirId, ItemKind, Node};
 use rustc_lint::{LateContext, LateLintPass};
-use rustc_middle::ty::{Adt, Ty};
+use rustc_middle::ty::{Adt, Ty, TypeFoldable};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::sym;
 use rustc_target::abi::LayoutOf as _;
@@ -52,6 +52,9 @@ impl LateLintPass<'_> for ZeroSizedMapValues {
             if is_type_diagnostic_item(cx, ty, sym::hashmap_type) || match_type(cx, ty, &paths::BTREEMAP);
             if let Adt(_, substs) = ty.kind();
             let ty = substs.type_at(1);
+            // Fixes https://github.com/rust-lang/rust-clippy/issues/7447 because of
+            // https://github.com/rust-lang/rust/blob/master/compiler/rustc_middle/src/ty/sty.rs#L968
+            if !ty.has_escaping_bound_vars();
             // Do this to prevent `layout_of` crashing, being unable to fully normalize `ty`.
             if is_normalizable(cx, cx.param_env, ty);
             if let Ok(layout) = cx.layout_of(ty);

clippy_utils/src/higher.rs

@@ -11,31 +11,6 @@ use rustc_hir::{BorrowKind, Expr, ExprKind, StmtKind, UnOp};
 use rustc_lint::LateContext;
 use rustc_span::{sym, ExpnKind, Span, Symbol};
 
-/// Converts a hir binary operator to the corresponding `ast` type.
-#[must_use]
-pub fn binop(op: hir::BinOpKind) -> ast::BinOpKind {
-    match op {
-        hir::BinOpKind::Eq => ast::BinOpKind::Eq,
-        hir::BinOpKind::Ge => ast::BinOpKind::Ge,
-        hir::BinOpKind::Gt => ast::BinOpKind::Gt,
-        hir::BinOpKind::Le => ast::BinOpKind::Le,
-        hir::BinOpKind::Lt => ast::BinOpKind::Lt,
-        hir::BinOpKind::Ne => ast::BinOpKind::Ne,
-        hir::BinOpKind::Or => ast::BinOpKind::Or,
-        hir::BinOpKind::Add => ast::BinOpKind::Add,
-        hir::BinOpKind::And => ast::BinOpKind::And,
-        hir::BinOpKind::BitAnd => ast::BinOpKind::BitAnd,
-        hir::BinOpKind::BitOr => ast::BinOpKind::BitOr,
-        hir::BinOpKind::BitXor => ast::BinOpKind::BitXor,
-        hir::BinOpKind::Div => ast::BinOpKind::Div,
-        hir::BinOpKind::Mul => ast::BinOpKind::Mul,
-        hir::BinOpKind::Rem => ast::BinOpKind::Rem,
-        hir::BinOpKind::Shl => ast::BinOpKind::Shl,
-        hir::BinOpKind::Shr => ast::BinOpKind::Shr,
-        hir::BinOpKind::Sub => ast::BinOpKind::Sub,
-    }
-}
-
 /// Represent a range akin to `ast::ExprKind::Range`.
 #[derive(Debug, Copy, Clone)]
 pub struct Range<'a> {

clippy_utils/src/lib.rs

@@ -909,12 +909,8 @@ pub fn is_integer_const(cx: &LateContext<'_>, e: &Expr<'_>, value: u128) -> bool
     if is_integer_literal(e, value) {
         return true;
     }
-    let map = cx.tcx.hir();
+    let enclosing_body = cx.tcx.hir().local_def_id(cx.tcx.hir().enclosing_body_owner(e.hir_id));
-    let parent_item = map.get_parent_item(e.hir_id);
+    if let Some((Constant::Int(v), _)) = constant(cx, cx.tcx.typeck(enclosing_body), e) {
-    if let Some((Constant::Int(v), _)) = map
-        .maybe_body_owned_by(parent_item)
-        .and_then(|body_id| constant(cx, cx.tcx.typeck_body(body_id), e))
-    {
         value == v
     } else {
         false
@@ -1041,18 +1037,14 @@ pub fn is_refutable(cx: &LateContext<'_>, pat: &Pat<'_>) -> bool {
         PatKind::Struct(ref qpath, fields, _) => {
             is_enum_variant(cx, qpath, pat.hir_id) || are_refutable(cx, fields.iter().map(|field| &*field.pat))
         },
-        PatKind::TupleStruct(ref qpath, pats, _) => {
+        PatKind::TupleStruct(ref qpath, pats, _) => is_enum_variant(cx, qpath, pat.hir_id) || are_refutable(cx, pats),
-            is_enum_variant(cx, qpath, pat.hir_id) || are_refutable(cx, pats)
-        },
         PatKind::Slice(head, middle, tail) => {
             match &cx.typeck_results().node_type(pat.hir_id).kind() {
                 rustc_ty::Slice(..) => {
                     // [..] is the only irrefutable slice pattern.
                     !head.is_empty() || middle.is_none() || !tail.is_empty()
                 },
-                rustc_ty::Array(..) => {
+                rustc_ty::Array(..) => are_refutable(cx, head.iter().chain(middle).chain(tail.iter())),
-                    are_refutable(cx, head.iter().chain(middle).chain(tail.iter()))
-                },
                 _ => {
                     // unreachable!()
                     true
@@ -1710,3 +1702,34 @@ pub fn is_test_module_or_function(tcx: TyCtxt<'_>, item: &Item<'_>) -> bool {
 
     matches!(item.kind, ItemKind::Mod(..)) && item.ident.name.as_str().contains("test")
 }
+
+macro_rules! op_utils {
+    ($($name:ident $assign:ident)*) => {
+        /// Binary operation traits like `LangItem::Add`
+        pub static BINOP_TRAITS: &[LangItem] = &[$(LangItem::$name,)*];
+
+        /// Operator-Assign traits like `LangItem::AddAssign`
+        pub static OP_ASSIGN_TRAITS: &[LangItem] = &[$(LangItem::$assign,)*];
+
+        /// Converts `BinOpKind::Add` to `(LangItem::Add, LangItem::AddAssign)`, for example
+        pub fn binop_traits(kind: hir::BinOpKind) -> Option<(LangItem, LangItem)> {
+            match kind {
+                $(hir::BinOpKind::$name => Some((LangItem::$name, LangItem::$assign)),)*
+                _ => None,
+            }
+        }
+    };
+}
+
+op_utils! {
+    Add    AddAssign
+    Sub    SubAssign
+    Mul    MulAssign
+    Div    DivAssign
+    Rem    RemAssign
+    BitXor BitXorAssign
+    BitAnd BitAndAssign
+    BitOr  BitOrAssign
+    Shl    ShlAssign
+    Shr    ShrAssign
+}

clippy_utils/src/sugg.rs

@@ -154,7 +154,7 @@ impl<'a> Sugg<'a> {
             | hir::ExprKind::Err => Sugg::NonParen(snippet),
             hir::ExprKind::Assign(..) => Sugg::BinOp(AssocOp::Assign, snippet),
             hir::ExprKind::AssignOp(op, ..) => Sugg::BinOp(hirbinop2assignop(op), snippet),
-            hir::ExprKind::Binary(op, ..) => Sugg::BinOp(AssocOp::from_ast_binop(higher::binop(op.node)), snippet),
+            hir::ExprKind::Binary(op, ..) => Sugg::BinOp(AssocOp::from_ast_binop(op.node.into()), snippet),
             hir::ExprKind::Cast(..) => Sugg::BinOp(AssocOp::As, snippet),
             hir::ExprKind::Type(..) => Sugg::BinOp(AssocOp::Colon, snippet),
         }

clippy_utils/src/ty.rs

@@ -257,10 +257,12 @@ pub fn is_type_diagnostic_item(cx: &LateContext<'_>, ty: Ty<'_>, diag_item: Symb
     }
 }
 
-/// Checks if the type is equal to a lang item
+/// Checks if the type is equal to a lang item.
+///
+/// Returns `false` if the `LangItem` is not defined.
 pub fn is_type_lang_item(cx: &LateContext<'_>, ty: Ty<'_>, lang_item: hir::LangItem) -> bool {
     match ty.kind() {
-        ty::Adt(adt, _) => cx.tcx.lang_items().require(lang_item).unwrap() == adt.did,
+        ty::Adt(adt, _) => cx.tcx.lang_items().require(lang_item).map_or(false, |li| li == adt.did),
         _ => false,
     }
 }

doc/basics.md

@@ -14,6 +14,7 @@ the codebase take a look at [Adding Lints] or [Common Tools].
   - [lintcheck](#lintcheck)
   - [PR](#pr)
   - [Common Abbreviations](#common-abbreviations)
+  - [Install from source](#install-from-source)
 
 ## Get the Code
 
@@ -128,4 +129,45 @@ This is a concise list of abbreviations that can come up during Clippy developme
 general list can be found in the [rustc-dev-guide glossary][glossary]. Always feel free to ask if
 an abbreviation or meaning is unclear to you.
 
+## Install from source
+
+If you are hacking on Clippy and want to install it from source, do the following:
+
+First, take note of the toolchain [override](https://rust-lang.github.io/rustup/overrides.html) in `/rust-toolchain`.
+We will use this override to install Clippy into the right toolchain.
+
+> Tip: You can view the active toolchain for the current directory with `rustup show active-toolchain`.
+
+From the Clippy project root, run the following command to build the Clippy binaries and copy them into the
+toolchain directory. This will override the currently installed Clippy component.
+
+```terminal
+cargo build --release --bin cargo-clippy --bin clippy-driver -Zunstable-options --out-dir "$(rustc --print=sysroot)/bin"
+```
+
+Now you may run `cargo clippy` in any project, using the toolchain where you just installed Clippy.
+
+```terminal
+cd my-project
+cargo +nightly-2021-07-01 clippy
+```
+
+...or `clippy-driver`
+
+```terminal
+clippy-driver +nightly-2021-07-01 <filename>
+```
+
+If you need to restore the default Clippy installation, run the following (from the Clippy project root).
+
+```terminal
+rustup component remove clippy
+rustup component add clippy
+```
+
+> **DO NOT** install using `cargo install --path . --force` since this will overwrite rustup
+[proxies](https://rust-lang.github.io/rustup/concepts/proxies.html). That is, `~/.cargo/bin/cargo-clippy` and
+`~/.cargo/bin/clippy-driver` should be hard or soft links to `~/.cargo/bin/rustup`. You can repair these by running
+`rustup update`.
+
 [glossary]: https://rustc-dev-guide.rust-lang.org/appendix/glossary.html

tests/ui/crashes/ice-6179.rs

@@ -7,7 +7,7 @@
 struct Foo {}
 
 impl Foo {
-    fn foo() -> Self {
+    fn new() -> Self {
         impl Foo {
             fn bar() {}
         }

tests/ui/crashes/ice-7340.rs

@@ -0,0 +1,6 @@
+#![allow(clippy::no_effect)]
+
+fn main() {
+    const CONSTANT: usize = 8;
+    [1; 1 % CONSTANT];
+}

tests/ui/crashes/ice-7410.rs

@@ -0,0 +1,31 @@
+// compile-flags: -Clink-arg=-nostartfiles
+// ignore-macos
+// ignore-windows
+
+#![feature(lang_items, start, libc)]
+#![no_std]
+#![allow(clippy::redundant_pattern_matching)]
+
+use core::panic::PanicInfo;
+
+struct S;
+
+impl Drop for S {
+    fn drop(&mut self) {}
+}
+
+#[start]
+fn main(argc: isize, argv: *const *const u8) -> isize {
+    if let Some(_) = Some(S) {
+    } else {
+    }
+    0
+}
+
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+    loop {}
+}
+
+#[lang = "eh_personality"]
+extern "C" fn eh_personality() {}

tests/ui/issue-7447.rs

@@ -0,0 +1,25 @@
+use std::{borrow::Cow, collections::BTreeMap, marker::PhantomData, sync::Arc};
+
+fn byte_view<'a>(s: &'a ByteView<'_>) -> BTreeMap<&'a str, ByteView<'a>> {
+    panic!()
+}
+
+fn group_entries(s: &()) -> BTreeMap<Cow<'_, str>, Vec<Cow<'_, str>>> {
+    todo!()
+}
+
+struct Mmap;
+
+enum ByteViewBacking<'a> {
+    Buf(Cow<'a, [u8]>),
+    Mmap(Mmap),
+}
+
+pub struct ByteView<'a> {
+    backing: Arc<ByteViewBacking<'a>>,
+}
+
+fn main() {
+    byte_view(panic!());
+    group_entries(panic!());
+}

tests/ui/issue_4266.rs

@@ -25,7 +25,9 @@ async fn all_to_one<'a>(a: &'a str, _b: &'a str) -> &'a str {
 struct Foo;
 impl Foo {
     // ok
-    pub async fn foo(&mut self) {}
+    pub async fn new(&mut self) -> Self {
+        Foo {}
+    }
 }
 
 // rust-lang/rust#61115

tests/ui/missing-doc-impl.rs

@@ -59,7 +59,9 @@ pub trait E: Sized {
 }
 
 impl Foo {
-    pub fn foo() {}
+    pub fn new() -> Self {
+        Foo { a: 0, b: 0 }
+    }
     fn bar() {}
 }
 

tests/ui/missing-doc-impl.stderr

@@ -78,23 +78,25 @@ LL |     type AssociatedTypeDef = Self;
 error: missing documentation for an associated function
   --> $DIR/missing-doc-impl.rs:62:5
    |
-LL |     pub fn foo() {}
+LL | /     pub fn new() -> Self {
-   |     ^^^^^^^^^^^^^^^
+LL | |         Foo { a: 0, b: 0 }
+LL | |     }
+   | |_____^
 
 error: missing documentation for an associated function
-  --> $DIR/missing-doc-impl.rs:63:5
+  --> $DIR/missing-doc-impl.rs:65:5
    |
 LL |     fn bar() {}
    |     ^^^^^^^^^^^
 
 error: missing documentation for an associated function
-  --> $DIR/missing-doc-impl.rs:67:5
+  --> $DIR/missing-doc-impl.rs:69:5
    |
 LL |     pub fn foo() {}
    |     ^^^^^^^^^^^^^^^
 
 error: missing documentation for an associated function
-  --> $DIR/missing-doc-impl.rs:71:5
+  --> $DIR/missing-doc-impl.rs:73:5
    |
 LL | /     fn foo2() -> u32 {
 LL | |         1

tests/ui/missing_const_for_fn/cant_be_const.rs

@@ -84,7 +84,7 @@ mod with_drop {
 
     impl A {
         // This can not be const because the type implements `Drop`.
-        pub fn a(self) -> B {
+        pub fn b(self) -> B {
             B
         }
     }

tests/ui/needless_bool/fixable.fixed

@@ -6,7 +6,8 @@
     dead_code,
     clippy::no_effect,
     clippy::if_same_then_else,
-    clippy::needless_return
+    clippy::needless_return,
+    clippy::self_named_constructor
 )]
 
 use std::cell::Cell;

tests/ui/needless_bool/fixable.rs

@@ -6,7 +6,8 @@
     dead_code,
     clippy::no_effect,
     clippy::if_same_then_else,
-    clippy::needless_return
+    clippy::needless_return,
+    clippy::self_named_constructor
 )]
 
 use std::cell::Cell;

tests/ui/needless_bool/fixable.stderr

@@ -1,5 +1,5 @@
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:39:5
+  --> $DIR/fixable.rs:40:5
    |
 LL | /     if x {
 LL | |         true
@@ -11,7 +11,7 @@ LL | |     };
    = note: `-D clippy::needless-bool` implied by `-D warnings`
 
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:44:5
+  --> $DIR/fixable.rs:45:5
    |
 LL | /     if x {
 LL | |         false
@@ -21,7 +21,7 @@ LL | |     };
    | |_____^ help: you can reduce it to: `!x`
 
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:49:5
+  --> $DIR/fixable.rs:50:5
    |
 LL | /     if x && y {
 LL | |         false
@@ -31,7 +31,7 @@ LL | |     };
    | |_____^ help: you can reduce it to: `!(x && y)`
 
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:69:5
+  --> $DIR/fixable.rs:70:5
    |
 LL | /     if x {
 LL | |         return true;
@@ -41,7 +41,7 @@ LL | |     };
    | |_____^ help: you can reduce it to: `return x`
 
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:77:5
+  --> $DIR/fixable.rs:78:5
    |
 LL | /     if x {
 LL | |         return false;
@@ -51,7 +51,7 @@ LL | |     };
    | |_____^ help: you can reduce it to: `return !x`
 
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:85:5
+  --> $DIR/fixable.rs:86:5
    |
 LL | /     if x && y {
 LL | |         return true;
@@ -61,7 +61,7 @@ LL | |     };
    | |_____^ help: you can reduce it to: `return x && y`
 
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:93:5
+  --> $DIR/fixable.rs:94:5
    |
 LL | /     if x && y {
 LL | |         return false;
@@ -71,7 +71,7 @@ LL | |     };
    | |_____^ help: you can reduce it to: `return !(x && y)`
 
 error: equality checks against true are unnecessary
-  --> $DIR/fixable.rs:101:8
+  --> $DIR/fixable.rs:102:8
    |
 LL |     if x == true {};
    |        ^^^^^^^^^ help: try simplifying it as shown: `x`
@@ -79,25 +79,25 @@ LL |     if x == true {};
    = note: `-D clippy::bool-comparison` implied by `-D warnings`
 
 error: equality checks against false can be replaced by a negation
-  --> $DIR/fixable.rs:105:8
+  --> $DIR/fixable.rs:106:8
    |
 LL |     if x == false {};
    |        ^^^^^^^^^^ help: try simplifying it as shown: `!x`
 
 error: equality checks against true are unnecessary
-  --> $DIR/fixable.rs:115:8
+  --> $DIR/fixable.rs:116:8
    |
 LL |     if x == true {};
    |        ^^^^^^^^^ help: try simplifying it as shown: `x`
 
 error: equality checks against false can be replaced by a negation
-  --> $DIR/fixable.rs:116:8
+  --> $DIR/fixable.rs:117:8
    |
 LL |     if x == false {};
    |        ^^^^^^^^^^ help: try simplifying it as shown: `!x`
 
 error: this if-then-else expression returns a bool literal
-  --> $DIR/fixable.rs:125:12
+  --> $DIR/fixable.rs:126:12
    |
 LL |       } else if returns_bool() {
    |  ____________^

tests/ui/self_named_constructor.rs

@@ -0,0 +1,59 @@
+#![warn(clippy::self_named_constructor)]
+
+struct ShouldSpawn;
+struct ShouldNotSpawn;
+
+impl ShouldSpawn {
+    pub fn should_spawn() -> ShouldSpawn {
+        ShouldSpawn
+    }
+
+    fn should_not_spawn() -> ShouldNotSpawn {
+        ShouldNotSpawn
+    }
+}
+
+impl ShouldNotSpawn {
+    pub fn new() -> ShouldNotSpawn {
+        ShouldNotSpawn
+    }
+}
+
+struct ShouldNotSpawnWithTrait;
+
+trait ShouldNotSpawnTrait {
+    type Item;
+}
+
+impl ShouldNotSpawnTrait for ShouldNotSpawnWithTrait {
+    type Item = Self;
+}
+
+impl ShouldNotSpawnWithTrait {
+    pub fn should_not_spawn_with_trait() -> impl ShouldNotSpawnTrait<Item = Self> {
+        ShouldNotSpawnWithTrait
+    }
+}
+
+// Same trait name and same type name should not spawn the lint
+#[derive(Default)]
+pub struct Default;
+
+trait TraitSameTypeName {
+    fn should_not_spawn() -> Self;
+}
+impl TraitSameTypeName for ShouldNotSpawn {
+    fn should_not_spawn() -> Self {
+        ShouldNotSpawn
+    }
+}
+
+struct SelfMethodShouldNotSpawn;
+
+impl SelfMethodShouldNotSpawn {
+    fn self_method_should_not_spawn(self) -> Self {
+        SelfMethodShouldNotSpawn
+    }
+}
+
+fn main() {}

tests/ui/self_named_constructor.stderr

@@ -0,0 +1,12 @@
+error: constructor `should_spawn` has the same name as the type
+  --> $DIR/self_named_constructor.rs:7:5
+   |
+LL | /     pub fn should_spawn() -> ShouldSpawn {
+LL | |         ShouldSpawn
+LL | |     }
+   | |_____^
+   |
+   = note: `-D clippy::self-named-constructor` implied by `-D warnings`
+
+error: aborting due to previous error
+

tests/ui/suspicious_arithmetic_impl.stderr

@@ -1,4 +1,4 @@
-error: suspicious use of binary operator in `Add` impl
+error: suspicious use of `-` in `Add` impl
   --> $DIR/suspicious_arithmetic_impl.rs:13:20
    |
 LL |         Foo(self.0 - other.0)
@@ -6,7 +6,7 @@ LL |         Foo(self.0 - other.0)
    |
    = note: `-D clippy::suspicious-arithmetic-impl` implied by `-D warnings`
 
-error: suspicious use of binary operator in `AddAssign` impl
+error: suspicious use of `-` in `AddAssign` impl
   --> $DIR/suspicious_arithmetic_impl.rs:19:23
    |
 LL |         *self = *self - other;
@@ -14,43 +14,43 @@ LL |         *self = *self - other;
    |
    = note: `-D clippy::suspicious-op-assign-impl` implied by `-D warnings`
 
-error: suspicious use of binary operator in `MulAssign` impl
+error: suspicious use of `/` in `MulAssign` impl
   --> $DIR/suspicious_arithmetic_impl.rs:32:16
    |
 LL |         self.0 /= other.0;
    |                ^^
 
-error: suspicious use of binary operator in `Rem` impl
+error: suspicious use of `/` in `Rem` impl
   --> $DIR/suspicious_arithmetic_impl.rs:70:20
    |
 LL |         Foo(self.0 / other.0)
    |                    ^
 
-error: suspicious use of binary operator in `BitAnd` impl
+error: suspicious use of `|` in `BitAnd` impl
   --> $DIR/suspicious_arithmetic_impl.rs:78:20
    |
 LL |         Foo(self.0 | other.0)
    |                    ^
 
-error: suspicious use of binary operator in `BitOr` impl
+error: suspicious use of `^` in `BitOr` impl
   --> $DIR/suspicious_arithmetic_impl.rs:86:20
    |
 LL |         Foo(self.0 ^ other.0)
    |                    ^
 
-error: suspicious use of binary operator in `BitXor` impl
+error: suspicious use of `&` in `BitXor` impl
   --> $DIR/suspicious_arithmetic_impl.rs:94:20
    |
 LL |         Foo(self.0 & other.0)
    |                    ^
 
-error: suspicious use of binary operator in `Shl` impl
+error: suspicious use of `>>` in `Shl` impl
   --> $DIR/suspicious_arithmetic_impl.rs:102:20
    |
 LL |         Foo(self.0 >> other.0)
    |                    ^^
 
-error: suspicious use of binary operator in `Shr` impl
+error: suspicious use of `<<` in `Shr` impl
   --> $DIR/suspicious_arithmetic_impl.rs:110:20
    |
 LL |         Foo(self.0 << other.0)

tests/ui/temporary_assignment.rs

@@ -1,5 +1,4 @@
 #![warn(clippy::temporary_assignment)]
-#![allow(const_item_mutation)]
 
 use std::ops::{Deref, DerefMut};
 

tests/ui/temporary_assignment.stderr

@@ -1,5 +1,5 @@
 error: assignment to temporary
-  --> $DIR/temporary_assignment.rs:48:5
+  --> $DIR/temporary_assignment.rs:47:5
    |
 LL |     Struct { field: 0 }.field = 1;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -7,7 +7,7 @@ LL |     Struct { field: 0 }.field = 1;
    = note: `-D clippy::temporary-assignment` implied by `-D warnings`
 
 error: assignment to temporary
-  --> $DIR/temporary_assignment.rs:49:5
+  --> $DIR/temporary_assignment.rs:48:5
    |
 LL | /     MultiStruct {
 LL | |         structure: Struct { field: 0 },
@@ -17,13 +17,13 @@ LL | |     .field = 1;
    | |______________^
 
 error: assignment to temporary
-  --> $DIR/temporary_assignment.rs:54:5
+  --> $DIR/temporary_assignment.rs:53:5
    |
 LL |     ArrayStruct { array: [0] }.array[0] = 1;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: assignment to temporary
-  --> $DIR/temporary_assignment.rs:55:5
+  --> $DIR/temporary_assignment.rs:54:5
    |
 LL |     (0, 0).0 = 1;
    |     ^^^^^^^^^^^^

tests/ui/unit_arg.rs

@@ -6,7 +6,8 @@
     clippy::unused_unit,
     clippy::unnecessary_wraps,
     clippy::or_fun_call,
-    clippy::needless_question_mark
+    clippy::needless_question_mark,
+    clippy::self_named_constructor
 )]
 
 use std::fmt::Debug;

tests/ui/unit_arg.stderr

@@ -1,5 +1,5 @@
 error: passing a unit value to a function
-  --> $DIR/unit_arg.rs:55:5
+  --> $DIR/unit_arg.rs:56:5
    |
 LL | /     foo({
 LL | |         1;
@@ -20,7 +20,7 @@ LL |     foo(());
    |
 
 error: passing a unit value to a function
-  --> $DIR/unit_arg.rs:58:5
+  --> $DIR/unit_arg.rs:59:5
    |
 LL |     foo(foo(1));
    |     ^^^^^^^^^^^
@@ -32,7 +32,7 @@ LL |     foo(());
    |
 
 error: passing a unit value to a function
-  --> $DIR/unit_arg.rs:59:5
+  --> $DIR/unit_arg.rs:60:5
    |
 LL | /     foo({
 LL | |         foo(1);
@@ -54,7 +54,7 @@ LL |     foo(());
    |
 
 error: passing a unit value to a function
-  --> $DIR/unit_arg.rs:64:5
+  --> $DIR/unit_arg.rs:65:5
    |
 LL | /     b.bar({
 LL | |         1;
@@ -74,7 +74,7 @@ LL |     b.bar(());
    |
 
 error: passing unit values to a function
-  --> $DIR/unit_arg.rs:67:5
+  --> $DIR/unit_arg.rs:68:5
    |
 LL |     taking_multiple_units(foo(0), foo(1));
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -87,7 +87,7 @@ LL |     taking_multiple_units((), ());
    |
 
 error: passing unit values to a function
-  --> $DIR/unit_arg.rs:68:5
+  --> $DIR/unit_arg.rs:69:5
    |
 LL | /     taking_multiple_units(foo(0), {
 LL | |         foo(1);
@@ -110,7 +110,7 @@ LL |     taking_multiple_units((), ());
    |
 
 error: passing unit values to a function
-  --> $DIR/unit_arg.rs:72:5
+  --> $DIR/unit_arg.rs:73:5
    |
 LL | /     taking_multiple_units(
 LL | |         {
@@ -140,7 +140,7 @@ LL |         foo(2);
  ...
 
 error: passing a unit value to a function
-  --> $DIR/unit_arg.rs:83:13
+  --> $DIR/unit_arg.rs:84:13
    |
 LL |     None.or(Some(foo(2)));
    |             ^^^^^^^^^^^^
@@ -154,7 +154,7 @@ LL |     });
    |
 
 error: passing a unit value to a function
-  --> $DIR/unit_arg.rs:86:5
+  --> $DIR/unit_arg.rs:87:5
    |
 LL |     foo(foo(()));
    |     ^^^^^^^^^^^^
@@ -166,7 +166,7 @@ LL |     foo(());
    |
 
 error: passing a unit value to a function
-  --> $DIR/unit_arg.rs:123:5
+  --> $DIR/unit_arg.rs:124:5
    |
 LL |     Some(foo(1))
    |     ^^^^^^^^^^^^

tests/ui/use_self.fixed

@@ -4,7 +4,12 @@
 
 #![warn(clippy::use_self)]
 #![allow(dead_code)]
-#![allow(clippy::should_implement_trait, clippy::upper_case_acronyms, clippy::from_over_into)]
+#![allow(
+    clippy::should_implement_trait,
+    clippy::upper_case_acronyms,
+    clippy::from_over_into,
+    clippy::self_named_constructor
+)]
 
 #[macro_use]
 extern crate proc_macro_derive;

tests/ui/use_self.rs

@@ -4,7 +4,12 @@
 
 #![warn(clippy::use_self)]
 #![allow(dead_code)]
-#![allow(clippy::should_implement_trait, clippy::upper_case_acronyms, clippy::from_over_into)]
+#![allow(
+    clippy::should_implement_trait,
+    clippy::upper_case_acronyms,
+    clippy::from_over_into,
+    clippy::self_named_constructor
+)]
 
 #[macro_use]
 extern crate proc_macro_derive;

tests/ui/use_self.stderr

@@ -1,5 +1,5 @@
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:18:21
+  --> $DIR/use_self.rs:23:21
    |
 LL |         fn new() -> Foo {
    |                     ^^^ help: use the applicable keyword: `Self`
@@ -7,163 +7,163 @@ LL |         fn new() -> Foo {
    = note: `-D clippy::use-self` implied by `-D warnings`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:19:13
+  --> $DIR/use_self.rs:24:13
    |
 LL |             Foo {}
    |             ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:21:22
+  --> $DIR/use_self.rs:26:22
    |
 LL |         fn test() -> Foo {
    |                      ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:22:13
+  --> $DIR/use_self.rs:27:13
    |
 LL |             Foo::new()
    |             ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:27:25
+  --> $DIR/use_self.rs:32:25
    |
 LL |         fn default() -> Foo {
    |                         ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:28:13
+  --> $DIR/use_self.rs:33:13
    |
 LL |             Foo::new()
    |             ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:93:24
+  --> $DIR/use_self.rs:98:24
    |
 LL |         fn bad(foos: &[Foo]) -> impl Iterator<Item = &Foo> {
    |                        ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:93:55
+  --> $DIR/use_self.rs:98:55
    |
 LL |         fn bad(foos: &[Foo]) -> impl Iterator<Item = &Foo> {
    |                                                       ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:108:13
+  --> $DIR/use_self.rs:113:13
    |
 LL |             TS(0)
    |             ^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:143:29
+  --> $DIR/use_self.rs:148:29
    |
 LL |                 fn bar() -> Bar {
    |                             ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:144:21
+  --> $DIR/use_self.rs:149:21
    |
 LL |                     Bar { foo: Foo {} }
    |                     ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:155:21
+  --> $DIR/use_self.rs:160:21
    |
 LL |         fn baz() -> Foo {
    |                     ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:156:13
+  --> $DIR/use_self.rs:161:13
    |
 LL |             Foo {}
    |             ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:173:21
+  --> $DIR/use_self.rs:178:21
    |
 LL |             let _ = Enum::B(42);
    |                     ^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:174:21
+  --> $DIR/use_self.rs:179:21
    |
 LL |             let _ = Enum::C { field: true };
    |                     ^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:175:21
+  --> $DIR/use_self.rs:180:21
    |
 LL |             let _ = Enum::A;
    |                     ^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:217:13
+  --> $DIR/use_self.rs:222:13
    |
 LL |             nested::A::fun_1();
    |             ^^^^^^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:218:13
+  --> $DIR/use_self.rs:223:13
    |
 LL |             nested::A::A;
    |             ^^^^^^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:220:13
+  --> $DIR/use_self.rs:225:13
    |
 LL |             nested::A {};
    |             ^^^^^^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:239:13
+  --> $DIR/use_self.rs:244:13
    |
 LL |             TestStruct::from_something()
    |             ^^^^^^^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:253:25
+  --> $DIR/use_self.rs:258:25
    |
 LL |         async fn g() -> S {
    |                         ^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:254:13
+  --> $DIR/use_self.rs:259:13
    |
 LL |             S {}
    |             ^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:258:16
+  --> $DIR/use_self.rs:263:16
    |
 LL |             &p[S::A..S::B]
    |                ^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:258:22
+  --> $DIR/use_self.rs:263:22
    |
 LL |             &p[S::A..S::B]
    |                      ^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:281:29
+  --> $DIR/use_self.rs:286:29
    |
 LL |         fn foo(value: T) -> Foo<T> {
    |                             ^^^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:282:13
+  --> $DIR/use_self.rs:287:13
    |
 LL |             Foo::<T> { value }
    |             ^^^^^^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:454:13
+  --> $DIR/use_self.rs:459:13
    |
 LL |             A::new::<submod::B>(submod::B {})
    |             ^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition
-  --> $DIR/use_self.rs:491:13
+  --> $DIR/use_self.rs:496:13
    |
 LL |             S2::new()
    |             ^^ help: use the applicable keyword: `Self`