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-rw-r--r--src/libsyntax/ast.rs2
-rw-r--r--src/libsyntax/feature_gate.rs2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index 0504e889ea1..86571f921f0 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -1927,7 +1927,7 @@ pub enum ItemKind {
     ///
     /// E.g. `trait Foo { .. }` or `trait Foo<T> { .. }`
     Trait(Unsafety, Generics, TyParamBounds, Vec<TraitItem>),
-    // Default trait implementation.
+    /// Auto trait implementation.
     ///
     /// E.g. `impl Trait for .. {}` or `impl<T> Trait<T> for .. {}`
     DefaultImpl(Unsafety, TraitRef),
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index f6e85ed6725..1dac0433f14 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -378,7 +378,7 @@ declare_features! (
     // #[doc(cfg(...))]
     (active, doc_cfg, "1.21.0", Some(43781)),
     // #[doc(masked)]
-    (active, doc_masked, "1.21.0", None),
+    (active, doc_masked, "1.21.0", Some(44027)),
 
     // allow `#[must_use]` on functions and comparison operators (RFC 1940)
     (active, fn_must_use, "1.21.0", Some(43302)),