Auto merge of #47251 - rkruppe:rm-simd-attr, r=eddyb

[rust.git] / src / libsyntax / feature_gate.rs

diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index d5dd22fb8ae73f95eba365f809d6bcb88ea60a33..b474a299058c6285e273d9b94cbb523dce5c501b 100644 (file)
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -449,6 +449,9 @@ pub fn new() -> Features {
 
     // Allows use of the :lifetime macro fragment specifier
     (active, macro_lifetime_matcher, "1.24.0", Some(46895)),
+
+    // `extern` in paths
+    (active, extern_in_paths, "1.23.0", Some(44660)),
 );
 
 declare_features! (
@@ -966,6 +969,13 @@ pub fn is_builtin_attr(attr: &ast::Attribute) -> bool {
                                       never be stable",
                                      cfg_fn!(rustc_attrs))),
 
+    // whitelists "identity-like" conversion methods to suggest on type mismatch
+    ("rustc_conversion_suggestion", Whitelisted, Gated(Stability::Unstable,
+                                                       "rustc_attrs",
+                                                       "this is an internal attribute that will \
+                                                        never be stable",
+                                                       cfg_fn!(rustc_attrs))),
+
     ("wasm_import_memory", Whitelisted, Gated(Stability::Unstable,
                                  "wasm_import_memory",
                                  "wasm_import_memory attribute is currently unstable",
@@ -1782,6 +1792,9 @@ fn visit_path(&mut self, path: &'a ast::Path, _id: NodeId) {
             if segment.identifier.name == keywords::Crate.name() {
                 gate_feature_post!(&self, crate_in_paths, segment.span,
                                    "`crate` in paths is experimental");
+            } else if segment.identifier.name == keywords::Extern.name() {
+                gate_feature_post!(&self, extern_in_paths, segment.span,
+                                   "`extern` in paths is experimental");
             }
         }