diff options
Diffstat (limited to 'src/libsyntax')
| -rw-r--r-- | src/libsyntax/feature_gate.rs | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs index 9aea995831e..6037b06eaf2 100644 --- a/src/libsyntax/feature_gate.rs +++ b/src/libsyntax/feature_gate.rs @@ -1669,6 +1669,14 @@ impl<'a> Context<'a> { } debug!("check_attribute: {:?} is builtin, {:?}, {:?}", attr.path, ty, gateage); return; + } else { + for segment in &attr.path.segments { + if segment.ident.as_str().starts_with("rustc") { + let msg = "attributes starting with `rustc` are \ + reserved for use by the `rustc` compiler"; + gate_feature!(self, rustc_attrs, segment.ident.span, msg); + } + } } for &(n, ty) in self.plugin_attributes { if attr.path == n { |