Revert "Put slicing syntax behind a feature gate."

This reverts commit 95cfc35607ccf5f02f02de56a35a9ef50fa23a82.

2 files changed, 1 insertions, 8 deletions

diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 38de2a9c284..ca6d488772c 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -70,7 +70,6 @@ static KNOWN_FEATURES: &'static [(&'static str, Status)] = &[
     ("tuple_indexing", Active),
     ("associated_types", Active),
     ("visible_private_types", Active),
-    ("slicing_syntax", Active),
 
     ("if_let", Active),
 
@@ -363,11 +362,6 @@ impl<'a, 'v> Visitor<'v> for Context<'a> {
                 self.gate_feature("if_let", e.span,
                                   "`if let` syntax is experimental");
             }
-            ast::ExprSlice(..) => {
-                self.gate_feature("slicing_syntax",
-                                  e.span,
-                                  "slicing syntax is experimental");
-            }
             _ => {}
         }
         visit::walk_expr(self, e);
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 64dedd45923..a4271544146 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -23,8 +23,7 @@
        html_favicon_url = "http://www.rust-lang.org/favicon.ico",
        html_root_url = "http://doc.rust-lang.org/master/")]
 
-#![allow(unknown_features)]
-#![feature(macro_rules, globs, default_type_params, phase, slicing_syntax)]
+#![feature(macro_rules, globs, default_type_params, phase)]
 #![feature(quote, struct_variant, unsafe_destructor, import_shadowing)]
 #![allow(deprecated)]