Fix typos “a”→“an”

3 files changed, 4 insertions, 4 deletions

diff --git a/compiler/rustc_mir_build/src/build/expr/into.rs b/compiler/rustc_mir_build/src/build/expr/into.rs
index b2e03f13479..aa2963c53f4 100644
--- a/compiler/rustc_mir_build/src/build/expr/into.rs
+++ b/compiler/rustc_mir_build/src/build/expr/into.rs
@@ -61,7 +61,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                     unpack!(this.expr_into_dest(destination, else_blk, &this.thir[else_opt]))
                 } else {
                     // Body of the `if` expression without an `else` clause must return `()`, thus
-                    // we implicitly generate a `else {}` if it is not specified.
+                    // we implicitly generate an `else {}` if it is not specified.
                     let correct_si = this.source_info(expr_span.shrink_to_hi());
                     this.cfg.push_assign_unit(else_blk, correct_si, destination, this.tcx);
                     else_blk
diff --git a/compiler/rustc_mir_build/src/build/matches/mod.rs b/compiler/rustc_mir_build/src/build/matches/mod.rs
index 6e16ee94c50..a36af024ad8 100644
--- a/compiler/rustc_mir_build/src/build/matches/mod.rs
+++ b/compiler/rustc_mir_build/src/build/matches/mod.rs
@@ -1936,7 +1936,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
             // }
             // ```
             //
-            // would yield a `arm_block` something like:
+            // would yield an `arm_block` something like:
             //
             // ```
             // StorageLive(_4);        // _4 is `x`
diff --git a/compiler/rustc_mir_build/src/build/mod.rs b/compiler/rustc_mir_build/src/build/mod.rs
index 988cc625422..bfebe860971 100644
--- a/compiler/rustc_mir_build/src/build/mod.rs
+++ b/compiler/rustc_mir_build/src/build/mod.rs
@@ -700,7 +700,7 @@ fn construct_const<'a, 'tcx>(
     builder.finish()
 }
 
-/// Construct MIR for a item that has had errors in type checking.
+/// Construct MIR for an item that has had errors in type checking.
 ///
 /// This is required because we may still want to run MIR passes on an item
 /// with type errors, but normal MIR construction can't handle that in general.
@@ -885,7 +885,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
         let tcx_hir = tcx.hir();
         let hir_typeck_results = self.typeck_results;
 
-        // In analyze_closure() in upvar.rs we gathered a list of upvars used by a
+        // In analyze_closure() in upvar.rs we gathered a list of upvars used by an
         // indexed closure and we stored in a map called closure_min_captures in TypeckResults
         // with the closure's DefId. Here, we run through that vec of UpvarIds for
         // the given closure and use the necessary information to create upvar