Rustup

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.55"
+version = "0.1.56"
 authors = ["The Rust Clippy Developers"]
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"

clippy_lints/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "clippy_lints"
 # begin automatic update
-version = "0.1.55"
+version = "0.1.56"
 # end automatic update
 authors = ["The Rust Clippy Developers"]
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"

clippy_lints/src/implicit_hasher.rs

@@ -3,7 +3,7 @@ use std::collections::BTreeMap;
 
 use rustc_errors::DiagnosticBuilder;
 use rustc_hir as hir;
-use rustc_hir::intravisit::{walk_body, walk_expr, walk_ty, NestedVisitorMap, Visitor};
+use rustc_hir::intravisit::{walk_body, walk_expr, walk_inf, walk_ty, NestedVisitorMap, Visitor};
 use rustc_hir::{Body, Expr, ExprKind, GenericArg, Item, ItemKind, QPath, TyKind};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::hir::map::Map;
@@ -295,6 +295,14 @@ impl<'a, 'tcx> Visitor<'tcx> for ImplicitHasherTypeVisitor<'a, 'tcx> {
         walk_ty(self, t);
     }
 
+    fn visit_infer(&mut self, inf: &'tcx hir::InferArg) {
+        if let Some(target) = ImplicitHasherType::new(self.cx, &inf.to_ty()) {
+            self.found.push(target);
+        }
+
+        walk_inf(self, inf);
+    }
+
     fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map> {
         NestedVisitorMap::None
     }

clippy_lints/src/missing_doc.rs

@@ -121,7 +121,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingDoc {
 
     fn check_crate(&mut self, cx: &LateContext<'tcx>, krate: &'tcx hir::Crate<'_>) {
         let attrs = cx.tcx.hir().attrs(hir::CRATE_HIR_ID);
-        self.check_missing_docs_attrs(cx, attrs, krate.item.inner, "the", "crate");
+        self.check_missing_docs_attrs(cx, attrs, krate.module().inner, "the", "crate");
     }
 
     fn check_item(&mut self, cx: &LateContext<'tcx>, it: &'tcx hir::Item<'_>) {

clippy_lints/src/types/type_complexity.rs

@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint;
 use rustc_hir as hir;
-use rustc_hir::intravisit::{walk_ty, NestedVisitorMap, Visitor};
+use rustc_hir::intravisit::{walk_inf, walk_ty, NestedVisitorMap, Visitor};
 use rustc_hir::{GenericParamKind, TyKind};
 use rustc_lint::LateContext;
 use rustc_middle::hir::map::Map;
@@ -39,6 +39,11 @@ struct TypeComplexityVisitor {
 impl<'tcx> Visitor<'tcx> for TypeComplexityVisitor {
     type Map = Map<'tcx>;
 
+    fn visit_infer(&mut self, inf: &'tcx hir::InferArg) {
+        self.score += 1;
+        walk_inf(self, inf);
+    }
+
     fn visit_ty(&mut self, ty: &'tcx hir::Ty<'_>) {
         let (add_score, sub_nest) = match ty.kind {
             // _, &x and *x have only small overhead; don't mess with nesting level

clippy_lints/src/use_self.rs

@@ -8,7 +8,7 @@ use rustc_hir::{
     self as hir,
     def::{CtorOf, DefKind, Res},
     def_id::LocalDefId,
-    intravisit::{walk_ty, NestedVisitorMap, Visitor},
+    intravisit::{walk_inf, walk_ty, NestedVisitorMap, Visitor},
     Expr, ExprKind, FnRetTy, FnSig, GenericArg, HirId, Impl, ImplItemKind, Item, ItemKind, Path, QPath, TyKind,
 };
 use rustc_lint::{LateContext, LateLintPass, LintContext};
@@ -264,6 +264,11 @@ struct SkipTyCollector {
 impl<'tcx> Visitor<'tcx> for SkipTyCollector {
     type Map = Map<'tcx>;
 
+    fn visit_infer(&mut self, inf: &hir::InferArg) {
+        self.types_to_skip.push(inf.hir_id);
+
+        walk_inf(self, inf);
+    }
     fn visit_ty(&mut self, hir_ty: &hir::Ty<'_>) {
         self.types_to_skip.push(hir_ty.hir_id);
 

clippy_utils/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_utils"
-version = "0.1.55"
+version = "0.1.56"
 authors = ["The Rust Clippy Developers"]
 edition = "2018"
 publish = false

clippy_utils/src/hir_utils.rs

@@ -288,6 +288,7 @@ impl HirEqInterExpr<'_, '_, '_> {
             (GenericArg::Const(l), GenericArg::Const(r)) => self.eq_body(l.value.body, r.value.body),
             (GenericArg::Lifetime(l_lt), GenericArg::Lifetime(r_lt)) => Self::eq_lifetime(l_lt, r_lt),
             (GenericArg::Type(l_ty), GenericArg::Type(r_ty)) => self.eq_ty(l_ty, r_ty),
+            (GenericArg::Infer(l_inf), GenericArg::Infer(r_inf)) => self.eq_ty(&l_inf.to_ty(), &r_inf.to_ty()),
             _ => false,
         }
     }
@@ -885,7 +886,11 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
 
     pub fn hash_ty(&mut self, ty: &Ty<'_>) {
         std::mem::discriminant(&ty.kind).hash(&mut self.s);
-        match ty.kind {
+        self.hash_tykind(&ty.kind);
+    }
+
+    pub fn hash_tykind(&mut self, ty: &TyKind<'_>) {
+        match ty {
             TyKind::Slice(ty) => {
                 self.hash_ty(ty);
             },
@@ -898,7 +903,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                 mut_ty.mutbl.hash(&mut self.s);
             },
             TyKind::Rptr(lifetime, ref mut_ty) => {
-                self.hash_lifetime(lifetime);
+                self.hash_lifetime(*lifetime);
                 self.hash_ty(mut_ty.ty);
                 mut_ty.mutbl.hash(&mut self.s);
             },
@@ -918,7 +923,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                 bfn.decl.c_variadic.hash(&mut self.s);
             },
             TyKind::Tup(ty_list) => {
-                for ty in ty_list {
+                for ty in *ty_list {
                     self.hash_ty(ty);
                 }
             },
@@ -927,7 +932,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                 self.hash_generic_args(arg_list);
             },
             TyKind::TraitObject(_, lifetime, _) => {
-                self.hash_lifetime(lifetime);
+                self.hash_lifetime(*lifetime);
             },
             TyKind::Typeof(anon_const) => {
                 self.hash_body(anon_const.body);
@@ -949,6 +954,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                 GenericArg::Lifetime(l) => self.hash_lifetime(l),
                 GenericArg::Type(ref ty) => self.hash_ty(ty),
                 GenericArg::Const(ref ca) => self.hash_body(ca.value.body),
+                GenericArg::Infer(ref inf) => self.hash_ty(&inf.to_ty()),
             }
         }
     }

clippy_utils/src/ty.rs

@@ -180,7 +180,7 @@ pub fn is_must_use_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
 }
 
 // FIXME: Per https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/infer/at/struct.At.html#method.normalize
-// this function can be removed once the `normalizie` method does not panic when normalization does
+// this function can be removed once the `normalize` method does not panic when normalization does
 // not succeed
 /// Checks if `Ty` is normalizable. This function is useful
 /// to avoid crashes on `layout_of`.

rust-toolchain

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2021-07-19"
+channel = "nightly-2021-07-29"
 components = ["llvm-tools-preview", "rustc-dev", "rust-src"]

tests/ui/future_not_send.stderr

@@ -55,11 +55,11 @@ note: captured value is not `Send`
 LL | async fn private_future2(rc: Rc<[u8]>, cell: &Cell<usize>) -> bool {
    |                          ^^ has type `std::rc::Rc<[u8]>` which is not `Send`
    = note: `std::rc::Rc<[u8]>` doesn't implement `std::marker::Send`
-note: captured value is not `Send`
+note: captured value is not `Send` because `&` references cannot be sent unless their referent is `Sync`
   --> $DIR/future_not_send.rs:20:40
    |
 LL | async fn private_future2(rc: Rc<[u8]>, cell: &Cell<usize>) -> bool {
-   |                                        ^^^^ has type `&std::cell::Cell<usize>` which is not `Send`
+   |                                        ^^^^ has type `&std::cell::Cell<usize>` which is not `Send`, because `std::cell::Cell<usize>` is not `Sync`
    = note: `std::cell::Cell<usize>` doesn't implement `std::marker::Sync`
 
 error: future cannot be sent between threads safely

tests/ui/needless_lifetimes.rs

@@ -1,5 +1,5 @@
 #![warn(clippy::needless_lifetimes)]
-#![allow(dead_code, clippy::needless_pass_by_value, clippy::unnecessary_wraps)]
+#![allow(dead_code, clippy::needless_pass_by_value, clippy::unnecessary_wraps, dyn_drop)]
 
 fn distinct_lifetimes<'a, 'b>(_x: &'a u8, _y: &'b u8, _z: u8) {}
 

tests/ui/transmute.rs

@@ -1,4 +1,3 @@
-#![feature(const_fn_transmute)]
 #![allow(dead_code)]
 
 extern crate core;

tests/ui/transmute.stderr

@@ -1,155 +1,155 @@
 error: transmute from a type (`&T`) to itself
-  --> $DIR/transmute.rs:20:20
+  --> $DIR/transmute.rs:19:20
    |
 LL |     let _: &'a T = core::intrinsics::transmute(t);
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `-D clippy::useless-transmute` implied by `-D warnings`
 
 error: transmute from a reference to a pointer
-  --> $DIR/transmute.rs:24:23
+  --> $DIR/transmute.rs:23:23
    |
 LL |     let _: *const T = core::intrinsics::transmute(t);
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T`
 
 error: transmute from a reference to a pointer
-  --> $DIR/transmute.rs:26:21
+  --> $DIR/transmute.rs:25:21
    |
 LL |     let _: *mut T = core::intrinsics::transmute(t);
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *mut T`
 
 error: transmute from a reference to a pointer
-  --> $DIR/transmute.rs:28:23
+  --> $DIR/transmute.rs:27:23
    |
 LL |     let _: *const U = core::intrinsics::transmute(t);
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *const U`
 
 error: transmute from a type (`std::vec::Vec<i32>`) to itself
-  --> $DIR/transmute.rs:34:27
+  --> $DIR/transmute.rs:33:27
    |
 LL |         let _: Vec<i32> = core::intrinsics::transmute(my_vec());
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from a type (`std::vec::Vec<i32>`) to itself
-  --> $DIR/transmute.rs:36:27
+  --> $DIR/transmute.rs:35:27
    |
 LL |         let _: Vec<i32> = core::mem::transmute(my_vec());
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from a type (`std::vec::Vec<i32>`) to itself
-  --> $DIR/transmute.rs:38:27
+  --> $DIR/transmute.rs:37:27
    |
 LL |         let _: Vec<i32> = std::intrinsics::transmute(my_vec());
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from a type (`std::vec::Vec<i32>`) to itself
-  --> $DIR/transmute.rs:40:27
+  --> $DIR/transmute.rs:39:27
    |
 LL |         let _: Vec<i32> = std::mem::transmute(my_vec());
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from a type (`std::vec::Vec<i32>`) to itself
-  --> $DIR/transmute.rs:42:27
+  --> $DIR/transmute.rs:41:27
    |
 LL |         let _: Vec<i32> = my_transmute(my_vec());
    |                           ^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from an integer to a pointer
-  --> $DIR/transmute.rs:44:31
+  --> $DIR/transmute.rs:43:31
    |
 LL |         let _: *const usize = std::mem::transmute(5_isize);
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `5_isize as *const usize`
 
 error: transmute from an integer to a pointer
-  --> $DIR/transmute.rs:48:31
+  --> $DIR/transmute.rs:47:31
    |
 LL |         let _: *const usize = std::mem::transmute(1 + 1usize);
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(1 + 1usize) as *const usize`
 
 error: transmute from a type (`*const Usize`) to the type that it points to (`Usize`)
-  --> $DIR/transmute.rs:63:24
+  --> $DIR/transmute.rs:62:24
    |
 LL |         let _: Usize = core::intrinsics::transmute(int_const_ptr);
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `-D clippy::crosspointer-transmute` implied by `-D warnings`
 
 error: transmute from a type (`*mut Usize`) to the type that it points to (`Usize`)
-  --> $DIR/transmute.rs:65:24
+  --> $DIR/transmute.rs:64:24
    |
 LL |         let _: Usize = core::intrinsics::transmute(int_mut_ptr);
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from a type (`Usize`) to a pointer to that type (`*const Usize`)
-  --> $DIR/transmute.rs:67:31
+  --> $DIR/transmute.rs:66:31
    |
 LL |         let _: *const Usize = core::intrinsics::transmute(my_int());
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from a type (`Usize`) to a pointer to that type (`*mut Usize`)
-  --> $DIR/transmute.rs:69:29
+  --> $DIR/transmute.rs:68:29
    |
 LL |         let _: *mut Usize = core::intrinsics::transmute(my_int());
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: transmute from a `u32` to a `char`
-  --> $DIR/transmute.rs:75:28
+  --> $DIR/transmute.rs:74:28
    |
 LL |     let _: char = unsafe { std::mem::transmute(0_u32) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::char::from_u32(0_u32).unwrap()`
    |
    = note: `-D clippy::transmute-int-to-char` implied by `-D warnings`
 
 error: transmute from a `i32` to a `char`
-  --> $DIR/transmute.rs:76:28
+  --> $DIR/transmute.rs:75:28
    |
 LL |     let _: char = unsafe { std::mem::transmute(0_i32) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::char::from_u32(0_i32 as u32).unwrap()`
 
 error: transmute from a `u8` to a `bool`
-  --> $DIR/transmute.rs:81:28
+  --> $DIR/transmute.rs:80:28
    |
 LL |     let _: bool = unsafe { std::mem::transmute(0_u8) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `0_u8 != 0`
    |
    = note: `-D clippy::transmute-int-to-bool` implied by `-D warnings`
 
 error: transmute from a `u32` to a `f32`
-  --> $DIR/transmute.rs:87:31
+  --> $DIR/transmute.rs:86:31
    |
 LL |         let _: f32 = unsafe { std::mem::transmute(0_u32) };
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)`
    |
    = note: `-D clippy::transmute-int-to-float` implied by `-D warnings`
 
 error: transmute from a `i32` to a `f32`
-  --> $DIR/transmute.rs:88:31
+  --> $DIR/transmute.rs:87:31
    |
 LL |         let _: f32 = unsafe { std::mem::transmute(0_i32) };
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_i32 as u32)`
 
 error: transmute from a `u64` to a `f64`
-  --> $DIR/transmute.rs:89:31
+  --> $DIR/transmute.rs:88:31
    |
 LL |         let _: f64 = unsafe { std::mem::transmute(0_u64) };
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_u64)`
 
 error: transmute from a `i64` to a `f64`
-  --> $DIR/transmute.rs:90:31
+  --> $DIR/transmute.rs:89:31
    |
 LL |         let _: f64 = unsafe { std::mem::transmute(0_i64) };
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_i64 as u64)`
 
 error: transmute from a `&[u8]` to a `&str`
-  --> $DIR/transmute.rs:108:28
+  --> $DIR/transmute.rs:107:28
    |
 LL |     let _: &str = unsafe { std::mem::transmute(b) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8(b).unwrap()`
    |
    = note: `-D clippy::transmute-bytes-to-str` implied by `-D warnings`
 
 error: transmute from a `&mut [u8]` to a `&mut str`
-  --> $DIR/transmute.rs:109:32
+  --> $DIR/transmute.rs:108:32
    |
 LL |     let _: &mut str = unsafe { std::mem::transmute(mb) };
    |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()`

tests/ui/transmute_float_to_int.rs

@@ -1,4 +1,3 @@
-#![feature(const_fn_transmute)]
 #![warn(clippy::transmute_float_to_int)]
 
 fn float_to_int() {