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-rw-r--r--src/libsyntax/ext/pipes/pipec.rs4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/libsyntax/ext/pipes/pipec.rs b/src/libsyntax/ext/pipes/pipec.rs
index a835cbb27a4..f1f8eb4f452 100644
--- a/src/libsyntax/ext/pipes/pipec.rs
+++ b/src/libsyntax/ext/pipes/pipec.rs
@@ -231,7 +231,9 @@ impl state: to_type_decls {
             vec::push(items_msg, v);
         }
 
-        ~[cx.item_enum_poly(name, ast::enum_def({ variants: items_msg }),
+        ~[cx.item_enum_poly(name,
+                            ast::enum_def({ variants: items_msg,
+                                            common: none }),
                             self.ty_params)]
     }