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-rw-r--r--src/libsyntax/feature_gate.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 75d231d68b5..f10113254de 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -298,7 +298,7 @@ impl<'a, 'v> Visitor<'v> for PostExpansionVisitor<'a> {
                         "the new orphan check rules will eventually be strictly enforced");
                 }
 
-                if attr::contains_name(i.attrs[],
+                if attr::contains_name(i.attrs.index(&FullRange),
                                        "old_impl_check") {
                     self.gate_feature("old_impl_check",
                                       i.span,