Rustup

clippy_lints/Cargo.toml

@@ -27,6 +27,10 @@ url = "2.2"
 [dev-dependencies]
 walkdir = "2.3"
 
+[lints.rust.unexpected_cfgs]
+level = "warn"
+check-cfg = ['cfg(bootstrap)']
+
 [package.metadata.rust-analyzer]
 # This crate uses #[feature(rustc_private)]
 rustc_private = true

clippy_lints/src/equatable_if_let.rs

@@ -53,7 +53,7 @@ fn unary_pattern(pat: &Pat<'_>) -> bool {
         | PatKind::Never
         | PatKind::Or(_)
         | PatKind::Err(_) => false,
-        PatKind::Struct(_, a, etc) => !etc && a.iter().all(|x| unary_pattern(x.pat)),
+        PatKind::Struct(_, a, etc) => etc.is_none() && a.iter().all(|x| unary_pattern(x.pat)),
         PatKind::Tuple(a, etc) | PatKind::TupleStruct(_, a, etc) => etc.as_opt_usize().is_none() && array_rec(a),
         PatKind::Ref(x, _) | PatKind::Box(x) | PatKind::Deref(x) | PatKind::Guard(x, _) => unary_pattern(x),
         PatKind::Expr(_) => true,

clippy_lints/src/lib.rs

@@ -7,7 +7,7 @@
 #![feature(iter_intersperse)]
 #![feature(iter_partition_in_place)]
 #![feature(never_type)]
-#![feature(round_char_boundary)]
+#![cfg_attr(bootstrap, feature(round_char_boundary))]
 #![feature(rustc_private)]
 #![feature(stmt_expr_attributes)]
 #![feature(unwrap_infallible)]

clippy_lints/src/manual_let_else.rs

@@ -287,7 +287,7 @@ fn replace_in_pattern(
                 }
                 return or_pat;
             },
-            PatKind::Struct(path, fields, has_dot_dot) => {
+            PatKind::Struct(path, fields, dot_dot) => {
                 let fields = fields
                     .iter()
                     .map(|fld| {
@@ -311,7 +311,7 @@ fn replace_in_pattern(
                     .collect::<Vec<_>>();
                 let fields_string = fields.join(", ");
 
-                let dot_dot_str = if has_dot_dot { " .." } else { "" };
+                let dot_dot_str = if dot_dot.is_some() { " .." } else { "" };
                 let (sn_pth, _) = snippet_with_context(cx, path.span(), span.ctxt(), "", app);
                 return format!("{sn_pth} {{ {fields_string}{dot_dot_str} }}");
             },

clippy_lints/src/matches/rest_pat_in_fully_bound_struct.rs

@@ -7,7 +7,7 @@ use super::REST_PAT_IN_FULLY_BOUND_STRUCTS;
 
 pub(crate) fn check(cx: &LateContext<'_>, pat: &Pat<'_>) {
     if !pat.span.from_expansion()
-        && let PatKind::Struct(QPath::Resolved(_, path), fields, true) = pat.kind
+        && let PatKind::Struct(QPath::Resolved(_, path), fields, Some(_)) = pat.kind
         && let Some(def_id) = path.res.opt_def_id()
         && let ty = cx.tcx.type_of(def_id).instantiate_identity()
         && let ty::Adt(def, _) = ty.kind()

clippy_lints/src/missing_inline.rs

@@ -188,5 +188,5 @@ impl<'tcx> LateLintPass<'tcx> for MissingInline {
 /// and a rustc warning would be triggered, see #15301
 fn fn_is_externally_exported(cx: &LateContext<'_>, def_id: DefId) -> bool {
     let attrs = cx.tcx.codegen_fn_attrs(def_id);
-    attrs.contains_extern_indicator(cx.tcx, def_id)
+    attrs.contains_extern_indicator()
 }

clippy_lints/src/transmute/useless_transmute.rs

@@ -49,17 +49,7 @@ pub(super) fn check<'tcx>(
             true
         },
         (ty::Int(_) | ty::Uint(_), ty::RawPtr(_, _)) => {
-            span_lint_and_then(
-                cx,
-                USELESS_TRANSMUTE,
-                e.span,
-                "transmute from an integer to a pointer",
-                |diag| {
-                    if let Some(arg) = sugg::Sugg::hir_opt(cx, arg) {
-                        diag.span_suggestion(e.span, "try", arg.as_ty(to_ty.to_string()), Applicability::Unspecified);
-                    }
-                },
-            );
+            // Handled by the upstream rustc `integer_to_ptr_transmutes` lint
             true
         },
         _ => false,

clippy_lints/src/utils/author.rs

@@ -754,7 +754,8 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> {
                 self.ident(name);
                 sub.if_some(|p| self.pat(p));
             },
-            PatKind::Struct(ref qpath, fields, ignore) => {
+            PatKind::Struct(ref qpath, fields, etc) => {
+                let ignore = etc.is_some();
                 bind!(self, qpath, fields);
                 kind!("Struct(ref {qpath}, {fields}, {ignore})");
                 self.qpath(qpath, pat);

clippy_utils/README.md

@@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain:
 
 <!-- begin autogenerated nightly -->
 ```
-nightly-2025-08-22
+nightly-2025-09-04
 ```
 <!-- end autogenerated nightly -->
 

clippy_utils/src/lib.rs

@@ -2012,7 +2012,7 @@ pub fn is_expr_identity_of_pat(cx: &LateContext<'_>, pat: &Pat<'_>, expr: &Expr<
                 false
             }
         },
-        (PatKind::Struct(pat_ident, field_pats, false), ExprKind::Struct(ident, fields, hir::StructTailExpr::None))
+        (PatKind::Struct(pat_ident, field_pats, None), ExprKind::Struct(ident, fields, hir::StructTailExpr::None))
             if field_pats.len() == fields.len() =>
         {
             // check ident

rust-toolchain.toml

@@ -1,6 +1,6 @@
 [toolchain]
 # begin autogenerated nightly
-channel = "nightly-2025-08-22"
+channel = "nightly-2025-09-04"
 # end autogenerated nightly
 components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"]
 profile = "minimal"

tests/ui/char_indices_as_byte_indices.fixed

@@ -1,4 +1,3 @@
-#![feature(round_char_boundary)]
 #![warn(clippy::char_indices_as_byte_indices)]
 
 trait StrExt {

tests/ui/char_indices_as_byte_indices.rs

@@ -1,4 +1,3 @@
-#![feature(round_char_boundary)]
 #![warn(clippy::char_indices_as_byte_indices)]
 
 trait StrExt {

tests/ui/char_indices_as_byte_indices.stderr

@@ -1,12 +1,12 @@
 error: indexing into a string with a character position where a byte index is expected
-  --> tests/ui/char_indices_as_byte_indices.rs:13:24
+  --> tests/ui/char_indices_as_byte_indices.rs:12:24
    |
 LL |         let _ = prim[..idx];
    |                        ^^^
    |
    = note: a character can take up more than one byte, so they are not interchangeable
 note: position comes from the enumerate iterator
-  --> tests/ui/char_indices_as_byte_indices.rs:12:10
+  --> tests/ui/char_indices_as_byte_indices.rs:11:10
    |
 LL |     for (idx, _) in prim.chars().enumerate() {
    |          ^^^                     ^^^^^^^^^^^
@@ -19,14 +19,14 @@ LL +     for (idx, _) in prim.char_indices() {
    |
 
 error: passing a character position to a method that expects a byte index
-  --> tests/ui/char_indices_as_byte_indices.rs:15:23
+  --> tests/ui/char_indices_as_byte_indices.rs:14:23
    |
 LL |         prim.split_at(idx);
    |                       ^^^
    |
    = note: a character can take up more than one byte, so they are not interchangeable
 note: position comes from the enumerate iterator
-  --> tests/ui/char_indices_as_byte_indices.rs:12:10
+  --> tests/ui/char_indices_as_byte_indices.rs:11:10
    |
 LL |     for (idx, _) in prim.chars().enumerate() {
    |          ^^^                     ^^^^^^^^^^^
@@ -37,14 +37,14 @@ LL +     for (idx, _) in prim.char_indices() {
    |
 
 error: passing a character position to a method that expects a byte index
-  --> tests/ui/char_indices_as_byte_indices.rs:19:49
+  --> tests/ui/char_indices_as_byte_indices.rs:18:49
    |
 LL |         let _ = prim[..prim.floor_char_boundary(idx)];
    |                                                 ^^^
    |
    = note: a character can take up more than one byte, so they are not interchangeable
 note: position comes from the enumerate iterator
-  --> tests/ui/char_indices_as_byte_indices.rs:12:10
+  --> tests/ui/char_indices_as_byte_indices.rs:11:10
    |
 LL |     for (idx, _) in prim.chars().enumerate() {
    |          ^^^                     ^^^^^^^^^^^
@@ -55,14 +55,14 @@ LL +     for (idx, _) in prim.char_indices() {
    |
 
 error: indexing into a string with a character position where a byte index is expected
-  --> tests/ui/char_indices_as_byte_indices.rs:29:24
+  --> tests/ui/char_indices_as_byte_indices.rs:28:24
    |
 LL |         let _ = prim[..c.0];
    |                        ^^^
    |
    = note: a character can take up more than one byte, so they are not interchangeable
 note: position comes from the enumerate iterator
-  --> tests/ui/char_indices_as_byte_indices.rs:28:9
+  --> tests/ui/char_indices_as_byte_indices.rs:27:9
    |
 LL |     for c in prim.chars().enumerate() {
    |         ^                 ^^^^^^^^^^^
@@ -73,14 +73,14 @@ LL +     for c in prim.char_indices() {
    |
 
 error: passing a character position to a method that expects a byte index
-  --> tests/ui/char_indices_as_byte_indices.rs:31:23
+  --> tests/ui/char_indices_as_byte_indices.rs:30:23
    |
 LL |         prim.split_at(c.0);
    |                       ^^^
    |
    = note: a character can take up more than one byte, so they are not interchangeable
 note: position comes from the enumerate iterator
-  --> tests/ui/char_indices_as_byte_indices.rs:28:9
+  --> tests/ui/char_indices_as_byte_indices.rs:27:9
    |
 LL |     for c in prim.chars().enumerate() {
    |         ^                 ^^^^^^^^^^^
@@ -91,14 +91,14 @@ LL +     for c in prim.char_indices() {
    |
 
 error: indexing into a string with a character position where a byte index is expected
-  --> tests/ui/char_indices_as_byte_indices.rs:36:26
+  --> tests/ui/char_indices_as_byte_indices.rs:35:26
    |
 LL |         let _ = string[..idx];
    |                          ^^^
    |
    = note: a character can take up more than one byte, so they are not interchangeable
 note: position comes from the enumerate iterator
-  --> tests/ui/char_indices_as_byte_indices.rs:35:10
+  --> tests/ui/char_indices_as_byte_indices.rs:34:10
    |
 LL |     for (idx, _) in string.chars().enumerate() {
    |          ^^^                       ^^^^^^^^^^^
@@ -109,14 +109,14 @@ LL +     for (idx, _) in string.char_indices() {
    |
 
 error: passing a character position to a method that expects a byte index
-  --> tests/ui/char_indices_as_byte_indices.rs:38:25
+  --> tests/ui/char_indices_as_byte_indices.rs:37:25
    |
 LL |         string.split_at(idx);
    |                         ^^^
    |
    = note: a character can take up more than one byte, so they are not interchangeable
 note: position comes from the enumerate iterator
-  --> tests/ui/char_indices_as_byte_indices.rs:35:10
+  --> tests/ui/char_indices_as_byte_indices.rs:34:10
    |
 LL |     for (idx, _) in string.chars().enumerate() {
    |          ^^^                       ^^^^^^^^^^^

tests/ui/ptr_arg.stderr

@@ -268,10 +268,10 @@ LL |     fn barbar(_x: &mut Vec<u32>, y: &mut String) {
    |                                     ^^^^^^^^^^^ help: change this to: `&mut str`
 
 error: eliding a lifetime that's named elsewhere is confusing
-  --> tests/ui/ptr_arg.rs:314:36
+  --> tests/ui/ptr_arg.rs:314:56
    |
 LL |     fn cow_good_ret_ty<'a>(input: &'a Cow<'a, str>) -> &str {
-   |                                    ^^     ^^           ---- the same lifetime is elided here
+   |                                    --     --           ^^^^ the same lifetime is elided here
    |                                    |      |
    |                                    |      the lifetime is named here
    |                                    the lifetime is named here

tests/ui/transmute.rs

@@ -4,6 +4,7 @@
     dead_code,
     clippy::borrow_as_ptr,
     unnecessary_transmutes,
+    integer_to_ptr_transmutes,
     clippy::needless_lifetimes,
     clippy::missing_transmute_annotations
 )]
@@ -60,12 +61,10 @@ fn useless() {
         //~^ useless_transmute
 
         let _: *const usize = std::mem::transmute(5_isize);
-        //~^ useless_transmute
 
         let _ = std::ptr::dangling::<usize>();
 
         let _: *const usize = std::mem::transmute(1 + 1usize);
-        //~^ useless_transmute
 
         let _ = (1 + 1_usize) as *const usize;
     }