From d3c0bb416e78cb878182dc6f4fd4a09922db87c1 Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Wed, 21 Jan 2015 18:21:14 -0800
Subject: Put #[staged_api] behind the 'staged_api' gate

---
 src/libsyntax/feature_gate.rs | 8 ++++++++
 src/libsyntax/lib.rs          | 1 +
 2 files changed, 9 insertions(+)

(limited to 'src/libsyntax')

diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 43af53aa2d2..989126cd8d6 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -113,6 +113,9 @@ static KNOWN_FEATURES: &'static [(&'static str, &'static str, Status)] = &[
     // mean anything
     ("test_accepted_feature", "1.0.0", Accepted),
     ("test_removed_feature", "1.0.0", Removed),
+
+    // Allows use of #[staged_api]
+    ("staged_api", "1.0.0", Active),
 ];
 
 enum Status {
@@ -444,6 +447,11 @@ impl<'a, 'v> Visitor<'v> for PostExpansionVisitor<'a> {
     }
 
     fn visit_attribute(&mut self, attr: &ast::Attribute) {
+        if attr.check_name("staged_api") {
+            self.gate_feature("staged_api", attr.span,
+                              "staged_api is for use by rustc only");
+        }
+
         if attr::contains_name(slice::ref_slice(attr), "lang") {
             self.gate_feature("lang_items",
                               attr.span,
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 975c714b3b4..a37a9a14694 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -16,6 +16,7 @@
 
 #![crate_name = "syntax"]
 #![unstable(feature = "unnamed_feature")]
+#![feature(staged_api)]
 #![staged_api]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
-- 
cgit 1.4.1-3-g733a5