1 files changed, 4 insertions, 0 deletions
diff --git a/lib/output.js b/lib/output.js
index a93f7387..602fa608 100644
--- a/lib/output.js
+++ b/lib/output.js
@@ -889,6 +889,10 @@ function OutputStream(options) {
         var def = self.definition();
         output.print_name(def ? def.mangled_name || def.name : self.name);
     });
+    DEFPRINT(AST_Undefined, function(self, output){
+        // XXX: should add more options for this
+        output.print("void 0");
+    });
     DEFPRINT(AST_This, function(self, output){
         output.print("this");
     });