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-rw-r--r--src/libsyntax/ast.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index 6a30072c835..3dcb77a0497 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -1022,6 +1022,7 @@ impl Mac_ {
 #[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
 pub struct MacroDef {
     pub tokens: ThinTokenStream,
+    pub legacy: bool,
 }
 
 impl MacroDef {