X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_ast_passes%2Fsrc%2Ffeature_gate.rs;h=097bd07c74ce8a5ba6dca07e3f11d9bb113c423e;hb=38478ea0cda8c7e2a4e8e841f97910bcb6d08ef3;hp=6c44fb0df236377baef7a736a6425b12f87f4eef;hpb=354e014b84ce2c39b88049d83ae5b9dae73b1047;p=rust.git

diff --git a/compiler/rustc_ast_passes/src/feature_gate.rs b/compiler/rustc_ast_passes/src/feature_gate.rs
index 6c44fb0df23..097bd07c74c 100644
--- a/compiler/rustc_ast_passes/src/feature_gate.rs
+++ b/compiler/rustc_ast_passes/src/feature_gate.rs
@@ -420,6 +420,24 @@ macro_rules! gate_modifier { ($($name:literal => $feature:ident)*) => {
                 }
             }
         }
+
+        // Emit errors for non-staged-api crates.
+        if !self.features.staged_api {
+            if attr.has_name(sym::rustc_deprecated)
+                || attr.has_name(sym::unstable)
+                || attr.has_name(sym::stable)
+                || attr.has_name(sym::rustc_const_unstable)
+                || attr.has_name(sym::rustc_const_stable)
+            {
+                struct_span_err!(
+                    self.sess,
+                    attr.span,
+                    E0734,
+                    "stability attributes may not be used outside of the standard library",
+                )
+                .emit();
+            }
+        }
     }
 
     fn visit_item(&mut self, i: &'a ast::Item) {