1 files changed, 3 insertions, 0 deletions
diff --git a/src/libsyntax/ext/tt/macro_rules.rs b/src/libsyntax/ext/tt/macro_rules.rs
index 0c81a68e999..70fc9dada42 100644
--- a/src/libsyntax/ext/tt/macro_rules.rs
+++ b/src/libsyntax/ext/tt/macro_rules.rs
@@ -312,9 +312,12 @@ pub fn compile(sess: &ParseSess, features: &Features, def: &ast::Item, edition:
             edition,
         }
     } else {
+        let is_transparent = attr::contains_name(&def.attrs, "rustc_transparent_macro");
+
         SyntaxExtension::DeclMacro {
             expander,
             def_info: Some((def.id, def.span)),
+            is_transparent,
             edition,
         }
     }