X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Flibrustc_ast_passes%2Ffeature_gate.rs;h=461072873bb529a08885100c25810393d0df0357;hb=72aaa3a414d17aa0c4f19feafa5bab5f84b60e63;hp=1e4b1ae07776212a8261dc882d999c45b7f71baf;hpb=a529e70be1db5601b224eea741ccbab74f22b0c4;p=rust.git

diff --git a/src/librustc_ast_passes/feature_gate.rs b/src/librustc_ast_passes/feature_gate.rs
index 1e4b1ae0777..461072873bb 100644
--- a/src/librustc_ast_passes/feature_gate.rs
+++ b/src/librustc_ast_passes/feature_gate.rs
@@ -339,7 +339,7 @@ fn visit_item(&mut self, i: &'a ast::Item) {
                 }
             }
 
-            ast::ItemKind::Impl(_, polarity, defaultness, ..) => {
+            ast::ItemKind::Impl { polarity, defaultness, .. } => {
                 if polarity == ast::ImplPolarity::Negative {
                     gate_feature_post!(
                         &self,
@@ -470,29 +470,8 @@ fn visit_expr(&mut self, e: &'a ast::Expr) {
         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) => {
-                for pat in &*pats {
-                    let span = pat.span;
-                    let inner_pat = match &pat.kind {
-                        PatKind::Ident(.., Some(pat)) => pat,
-                        _ => pat,
-                    };
-                    if inner_pat.is_rest() {
-                        gate_feature_post!(
-                            &self,
-                            slice_patterns,
-                            span,
-                            "subslice patterns are unstable"
-                        );
-                    }
-                }
-            }
             PatKind::Box(..) => {
                 gate_feature_post!(
                     &self,