From 37dfc0c5982029ea0793699eead1d8ec4c5cef73 Mon Sep 17 00:00:00 2001
From: "leonardo.yvens" <leoyvens@gmail.com>
Date: Thu, 12 Oct 2017 15:36:18 -0300
Subject: Feature gate `auto trait` and ignore it in rustdoc

---
 src/libsyntax/feature_gate.rs | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/libsyntax')

diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 83f5553a792..9aee2441a9d 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -1389,6 +1389,12 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
                 }
             }
 
+            ast::ItemKind::Trait(ast::IsAuto::Yes, ..) => {
+                gate_feature_post!(&self, optin_builtin_traits,
+                                   i.span,
+                                   "auto traits are experimental and possibly buggy");
+            }
+            
             ast::ItemKind::MacroDef(ast::MacroDef { legacy: false, .. }) => {
                 let msg = "`macro` is experimental";
                 gate_feature_post!(&self, decl_macro, i.span, msg);
-- 
cgit 1.4.1-3-g733a5