Fix misuses of a vs an

Signed-off-by: cui fliter <imcusg@gmail.com>

4 files changed, 6 insertions, 6 deletions

diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
index 48d09f2c2b2..a9586a0bf30 100644
--- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
@@ -1364,7 +1364,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
                     err.note(format!(
                         "a for loop advances the iterator for you, the result is stored in `{loop_bind}`."
                     ));
-                    err.help("if you want to call `next` on a iterator within the loop, consider using `while let`.");
+                    err.help("if you want to call `next` on an iterator within the loop, consider using `while let`.");
         }
     }
 
diff --git a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
index a0edeec59d0..e3f3e7432fd 100644
--- a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
@@ -1358,9 +1358,9 @@ fn suggest_ampmut<'tcx>(
         None => (false, decl_span),
     };
 
-    // if the binding already exists and is a reference with a explicit
+    // if the binding already exists and is a reference with an explicit
     // lifetime, then we can suggest adding ` mut`. this is special-cased from
-    // the path without a explicit lifetime.
+    // the path without an explicit lifetime.
     if let Ok(src) = tcx.sess.source_map().span_to_snippet(span)
         && src.starts_with("&'")
         // note that `&     'a T` is invalid so this is correct.
diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs
index 8115c61e89d..1c982a1ce16 100644
--- a/compiler/rustc_borrowck/src/lib.rs
+++ b/compiler/rustc_borrowck/src/lib.rs
@@ -1966,7 +1966,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
             Reservation(WriteKind::MutableBorrow(BorrowKind::Mut { kind: mut_borrow_kind }))
             | Write(WriteKind::MutableBorrow(BorrowKind::Mut { kind: mut_borrow_kind })) => {
                 let is_local_mutation_allowed = match mut_borrow_kind {
-                    // `ClosureCapture` is used for mutable variable with a immutable binding.
+                    // `ClosureCapture` is used for mutable variable with an immutable binding.
                     // This is only behaviour difference between `ClosureCapture` and mutable borrows.
                     MutBorrowKind::ClosureCapture => LocalMutationIsAllowed::Yes,
                     MutBorrowKind::Default | MutBorrowKind::TwoPhaseBorrow => {
diff --git a/compiler/rustc_borrowck/src/universal_regions.rs b/compiler/rustc_borrowck/src/universal_regions.rs
index af437f36b9f..c73192f4404 100644
--- a/compiler/rustc_borrowck/src/universal_regions.rs
+++ b/compiler/rustc_borrowck/src/universal_regions.rs
@@ -164,7 +164,7 @@ struct UniversalRegionIndices<'tcx> {
     /// be able to map them to our internal `RegionVid`. This is
     /// basically equivalent to an `GenericArgs`, except that it also
     /// contains an entry for `ReStatic` -- it might be nice to just
-    /// use a args, and then handle `ReStatic` another way.
+    /// use an args, and then handle `ReStatic` another way.
     indices: FxHashMap<ty::Region<'tcx>, RegionVid>,
 
     /// The vid assigned to `'static`. Used only for diagnostics.
@@ -290,7 +290,7 @@ impl<'tcx> UniversalRegions<'tcx> {
         (FIRST_GLOBAL_INDEX..self.num_universals).map(RegionVid::from_usize)
     }
 
-    /// Returns `true` if `r` is classified as an local region.
+    /// Returns `true` if `r` is classified as a local region.
     pub fn is_local_free_region(&self, r: RegionVid) -> bool {
         self.region_classification(r) == Some(RegionClassification::Local)
     }