Feature gate

Author: vadimcn

src/librustc/session/config.rs

@@ -1480,6 +1480,10 @@ pub fn build_session_options_and_crate_config(matches: &getopts::Matches)
                                                  s));
             }
         };
+        if kind == cstore::NativeStaticNobundle && !nightly_options::is_nightly_build() {
+            early_error(error_format, &format!("the library kind 'static-nobundle' is only \
+                                                accepted on the nightly compiler"));
+        }
         let mut name_parts = name.splitn(2, ':');
         let name = name_parts.next().unwrap();
         let new_name = name_parts.next();

src/librustc_metadata/creader.rs

@@ -111,6 +111,13 @@ fn register_native_lib(sess: &Session,
                                        GateIssue::Language,
                                        "is feature gated");
     }
+    if lib.kind == cstore::NativeStaticNobundle && !sess.features.borrow().static_nobundle {
+        feature_gate::emit_feature_err(&sess.parse_sess,
+                                       "static_nobundle",
+                                       span.unwrap(),
+                                       GateIssue::Language,
+                                       "kind=\"static-nobundle\" is feature gated");
+    }
     cstore.add_used_library(lib);
 }
 

src/libsyntax/feature_gate.rs

@@ -322,6 +322,9 @@ declare_features! (
     // Allows attributes on struct literal fields.
     (active, struct_field_attributes, "1.16.0", Some(38814)),
 
+    // Allows #[link(kind="static-nobundle"...]
+    (active, static_nobundle, "1.16.0", Some(37403)),
+
     // `extern "msp430-interrupt" fn()`
     (active, abi_msp430_interrupt, "1.16.0", Some(38487)),
 );

src/test/compile-fail/feature-gate-static-nobundle.rs

@@ -0,0 +1,13 @@
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[link(name="foo", kind="static-nobundle")]
+//~^ ERROR: kind="static-nobundle" is feature gated
+extern {}

src/test/run-make/static-nobundle/bar.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 #![crate_type = "rlib"]
+#![feature(static_nobundle)]
 
 #[link(name = "foo", kind = "static-nobundle")]
 extern {