Fix typos (taking into account review comments)

Author: blyxyas

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -651,7 +651,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
                     }
 
                     // FIXME: We make sure that this is a normal top-level binding,
-                    // but we could suggest `todo!()` for all uninitialized bindings in the pattern pattern
+                    // but we could suggest `todo!()` for all uninitialized bindings in the pattern
                     if let hir::StmtKind::Let(hir::LetStmt { span, ty, init: None, pat, .. }) =
                         &ex.kind
                         && let hir::PatKind::Binding(..) = pat.kind

compiler/rustc_hir_typeck/src/expr.rs

@@ -3109,7 +3109,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
 
             let true_errors = ocx.select_where_possible();
 
-            // Do a leak check -- we can't really report report a useful error here,
+            // Do a leak check -- we can't really report a useful error here,
             // but it at least avoids an ICE when the error has to do with higher-ranked
             // lifetimes.
             self.leak_check(outer_universe, Some(snapshot))?;

compiler/rustc_lint/src/non_local_def.rs

@@ -39,7 +39,7 @@ declare_lint! {
     ///
     /// Creating non-local definitions go against expectation and can create discrepancies
     /// in tooling. It should be avoided. It may become deny-by-default in edition 2024
-    /// and higher, see see the tracking issue <https://github.com/rust-lang/rust/issues/120363>.
+    /// and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>.
     ///
     /// An `impl` definition is non-local if it is nested inside an item and neither
     /// the type nor the trait are at the same nesting level as the `impl` block.

compiler/rustc_sanitizers/src/cfi/typeid/itanium_cxx_abi/transform.rs

@@ -268,7 +268,7 @@ fn trait_object_ty<'tcx>(tcx: TyCtxt<'tcx>, poly_trait_ref: ty::PolyTraitRef<'tc
 /// if a function is member of the group derived from this type id. Therefore, in the first call to
 /// typeid_for_fnabi (when type ids are attached to functions and methods), it can only include at
 /// most as much information that would be available in the second call (i.e., during code
-/// generation at call sites); otherwise, the type ids would not not match.
+/// generation at call sites); otherwise, the type ids would not match.
 ///
 /// For this, it:
 ///

library/core/src/ptr/mut_ptr.rs

@@ -187,7 +187,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// This is similar to `self as usize`, which semantically discards *provenance* and
     /// *address-space* information. However, unlike `self as usize`, casting the returned address
-    /// back to a pointer yields yields a [pointer without provenance][without_provenance_mut], which is undefined
+    /// back to a pointer yields a [pointer without provenance][without_provenance_mut], which is undefined
     /// behavior to dereference. To properly restore the lost information and obtain a
     /// dereferenceable pointer, use [`with_addr`][pointer::with_addr] or
     /// [`map_addr`][pointer::map_addr].

library/portable-simd/crates/core_simd/src/ops.rs

@@ -122,7 +122,7 @@ macro_rules! for_base_types {
                     #[inline]
                     #[must_use = "operator returns a new vector without mutating the inputs"]
                     // TODO: only useful for int Div::div, but we hope that this
-                    // will essentially always always get inlined anyway.
+                    // will essentially always get inlined anyway.
                     #[track_caller]
                     fn $call(self, rhs: Self) -> Self::Output {
                         $macro_impl!(self, rhs, $inner, $scalar)

library/stdarch

@@ -127,7 +127,7 @@ pub(super) fn check<'tcx>(
     }
 }
 
-/// checks for for collecting into a (generic) method or function argument
+/// checks for collecting into a (generic) method or function argument
 /// taking an `IntoIterator`
 fn check_collect_into_intoiterator<'tcx>(
     cx: &LateContext<'tcx>,

src/tools/cargo

@@ -282,7 +282,7 @@ mod issue_9218 {
         todo!()
     }
 
-    // These two's return types don't use use 'a so it's not okay
+    // These two's return types don't use 'a so it's not okay
     fn cow_bad_ret_ty_1<'a>(input: &'a Cow<'a, str>) -> &'static str {
         //~^ ERROR: using a reference to `Cow` is not recommended
         todo!()