Revert "pre-expansion gate box_patterns"

This reverts commit 2aff6b36d7ed5c25700669a92b4a43200ee0fe6b.

1 files changed, 14 insertions, 1 deletions

diff --git a/src/libsyntax/feature_gate/check.rs b/src/libsyntax/feature_gate/check.rs
index 7c5b75387d2..33dfe386a4d 100644
--- a/src/libsyntax/feature_gate/check.rs
+++ b/src/libsyntax/feature_gate/check.rs
@@ -533,6 +533,10 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
         visit::walk_expr(self, e)
     }
 
+    fn visit_arm(&mut self, arm: &'a ast::Arm) {
+        visit::walk_arm(self, arm)
+    }
+
     fn visit_pat(&mut self, pattern: &'a ast::Pat) {
         match &pattern.kind {
             PatKind::Slice(pats) => {
@@ -552,6 +556,11 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
                     }
                 }
             }
+            PatKind::Box(..) => {
+                gate_feature_post!(&self, box_patterns,
+                                  pattern.span,
+                                  "box pattern syntax is experimental");
+            }
             PatKind::Range(_, _, Spanned { node: RangeEnd::Excluded, .. }) => {
                 gate_feature_post!(&self, exclusive_range_pattern, pattern.span,
                                    "exclusive range pattern syntax is experimental");
@@ -561,7 +570,11 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
         visit::walk_pat(self, pattern)
     }
 
-    fn visit_fn(&mut self, fn_kind: FnKind<'a>, fn_decl: &'a ast::FnDecl, span: Span, _: NodeId) {
+    fn visit_fn(&mut self,
+                fn_kind: FnKind<'a>,
+                fn_decl: &'a ast::FnDecl,
+                span: Span,
+                _node_id: NodeId) {
         if let Some(header) = fn_kind.header() {
             // Stability of const fn methods are covered in
             // `visit_trait_item` and `visit_impl_item` below; this is