2 files changed, 4 insertions, 1 deletions
diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs
index 87ff39a8294..042894beec2 100644
--- a/compiler/rustc_hir/src/hir.rs
+++ b/compiler/rustc_hir/src/hir.rs
@@ -1038,6 +1038,7 @@ pub struct Block<'hir> {
     pub hir_id: HirId,
     /// Distinguishes between `unsafe { ... }` and `{ ... }`.
     pub rules: BlockCheckMode,
+    /// The span includes the curly braces `{` and `}` around the block.
     pub span: Span,
     /// If true, then there may exist `break 'a` values that aim to
     /// break out of this block early.
diff --git a/compiler/rustc_hir/src/lib.rs b/compiler/rustc_hir/src/lib.rs
index 600a0dce03b..e517c3fd07a 100644
--- a/compiler/rustc_hir/src/lib.rs
+++ b/compiler/rustc_hir/src/lib.rs
@@ -2,13 +2,15 @@
 //!
 //! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/hir.html
 
+// tidy-alphabetical-start
+#![allow(internal_features)]
 #![feature(associated_type_defaults)]
 #![feature(closure_track_caller)]
 #![feature(let_chains)]
 #![feature(never_type)]
 #![feature(rustc_attrs)]
 #![feature(variant_count)]
-#![allow(internal_features)]
+// tidy-alphabetical-end
 
 extern crate self as rustc_hir;