1 files changed, 8 insertions, 0 deletions
diff --git a/src/libsyntax/feature_gate/check.rs b/src/libsyntax/feature_gate/check.rs
index 3a32f12b255..184a38dfaed 100644
--- a/src/libsyntax/feature_gate/check.rs
+++ b/src/libsyntax/feature_gate/check.rs
@@ -661,6 +661,14 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
         }
         visit::walk_impl_item(self, ii)
     }
+
+    fn visit_vis(&mut self, vis: &'a ast::Visibility) {
+        if let ast::VisibilityKind::Crate(ast::CrateSugar::JustCrate) = vis.node {
+            gate_feature_post!(&self, crate_visibility_modifier, vis.span,
+                               "`crate` visibility modifier is experimental");
+        }
+        visit::walk_vis(self, vis)
+    }
 }
 
 pub fn get_features(span_handler: &Handler, krate_attrs: &[ast::Attribute],