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

5 files changed, 13 insertions, 6 deletions

diff --git a/clippy_utils/src/ast_utils.rs b/clippy_utils/src/ast_utils.rs
index 2d0d6f559ad..140cfa2194f 100644
--- a/clippy_utils/src/ast_utils.rs
+++ b/clippy_utils/src/ast_utils.rs
@@ -178,7 +178,9 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool {
         (Yield(l), Yield(r)) | (Ret(l), Ret(r)) => eq_expr_opt(l, r),
         (Break(ll, le), Break(rl, re)) => eq_label(ll, rl) && eq_expr_opt(le, re),
         (Continue(ll), Continue(rl)) => eq_label(ll, rl),
-        (Assign(l1, l2, _), Assign(r1, r2, _)) | (Index(l1, l2, _), Index(r1, r2, _)) => eq_expr(l1, r1) && eq_expr(l2, r2),
+        (Assign(l1, l2, _), Assign(r1, r2, _)) | (Index(l1, l2, _), Index(r1, r2, _)) => {
+            eq_expr(l1, r1) && eq_expr(l2, r2)
+        },
         (AssignOp(lo, lp, lv), AssignOp(ro, rp, rv)) => lo.node == ro.node && eq_expr(lp, rp) && eq_expr(lv, rv),
         (Field(lp, lf), Field(rp, rf)) => eq_id(*lf, *rf) && eq_expr(lp, rp),
         (Match(ls, la), Match(rs, ra)) => eq_expr(ls, rs) && over(la, ra, eq_arm),
diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs
index d38e3f1ae76..adeb673b6b9 100644
--- a/clippy_utils/src/consts.rs
+++ b/clippy_utils/src/consts.rs
@@ -329,7 +329,7 @@ pub struct ConstEvalLateContext<'a, 'tcx> {
 }
 
 impl<'a, 'tcx> ConstEvalLateContext<'a, 'tcx> {
-    fn new(lcx: &'a LateContext<'tcx>, typeck_results: &'a ty::TypeckResults<'tcx>) -> Self {
+    pub fn new(lcx: &'a LateContext<'tcx>, typeck_results: &'a ty::TypeckResults<'tcx>) -> Self {
         Self {
             lcx,
             typeck_results,
diff --git a/clippy_utils/src/diagnostics.rs b/clippy_utils/src/diagnostics.rs
index edd87546a5f..210957a916f 100644
--- a/clippy_utils/src/diagnostics.rs
+++ b/clippy_utils/src/diagnostics.rs
@@ -83,9 +83,9 @@ pub fn span_lint_and_help<T: LintContext>(
     cx.struct_span_lint(lint, span, msg.to_string(), |diag| {
         let help = help.to_string();
         if let Some(help_span) = help_span {
-            diag.span_help(help_span, help.to_string());
+            diag.span_help(help_span, help);
         } else {
-            diag.help(help.to_string());
+            diag.help(help);
         }
         docs_link(diag, lint);
         diag
diff --git a/clippy_utils/src/qualify_min_const_fn.rs b/clippy_utils/src/qualify_min_const_fn.rs
index f0a777c5b89..4c695cb9b6e 100644
--- a/clippy_utils/src/qualify_min_const_fn.rs
+++ b/clippy_utils/src/qualify_min_const_fn.rs
@@ -14,7 +14,7 @@ use rustc_middle::mir::{
     Body, CastKind, NonDivergingIntrinsic, NullOp, Operand, Place, ProjectionElem, Rvalue, Statement, StatementKind,
     Terminator, TerminatorKind,
 };
-use rustc_middle::traits::{ImplSource, ObligationCause, BuiltinImplSource};
+use rustc_middle::traits::{BuiltinImplSource, ImplSource, ObligationCause};
 use rustc_middle::ty::adjustment::PointerCoercion;
 use rustc_middle::ty::{self, GenericArgKind, TraitRef, Ty, TyCtxt};
 use rustc_semver::RustcVersion;
@@ -425,5 +425,5 @@ fn is_ty_const_destruct<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, body: &Body<'tcx>
         ocx.select_all_or_error().is_empty()
     }
 
-    !ty.needs_drop(tcx, ConstCx::new(tcx, body).param_env)    
+    !ty.needs_drop(tcx, ConstCx::new(tcx, body).param_env)
 }
diff --git a/clippy_utils/src/ty.rs b/clippy_utils/src/ty.rs
index 71766480535..a05f682aa8c 100644
--- a/clippy_utils/src/ty.rs
+++ b/clippy_utils/src/ty.rs
@@ -1093,6 +1093,11 @@ fn assert_generic_args_match<'tcx>(tcx: TyCtxt<'tcx>, did: DefId, args: &[Generi
     }
 }
 
+/// Returns whether `ty` is never-like; i.e., `!` (never) or an enum with zero variants.
+pub fn is_never_like(ty: Ty<'_>) -> bool {
+    ty.is_never() || (ty.is_enum() && ty.ty_adt_def().is_some_and(|def| def.variants().is_empty()))
+}
+
 /// Makes the projection type for the named associated type in the given impl or trait impl.
 ///
 /// This function is for associated types which are "known" to exist, and as such, will only return