fix corner case in `rename` (#4000)

fixes #3999

1 files changed, 2 insertions, 5 deletions

diff --git a/lib/scope.js b/lib/scope.js
index 2f49df76..66314766 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -543,11 +543,8 @@ AST_Toplevel.DEFMETHOD("expand_names", function(options) {
         var redef = def.redefined();
         var name = redef ? redef.rename || redef.name : next_name();
         def.rename = name;
-        def.orig.forEach(function(sym) {
-            sym.name = name;
-        });
-        def.references.forEach(function(sym) {
-            sym.name = name;
+        def.orig.concat(def.references).forEach(function(sym) {
+            if (sym.definition() === def) sym.name = name;
         });
     }
 });