src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/Lower.java

@@ -176,10 +176,19 @@
     public Node leaveCallNode(final CallNode callNode) {
         return checkEval(callNode.setFunction(markerFunction(callNode.getFunction())));
     }
 
     @Override
+    public boolean enterCatchNode(final CatchNode catchNode) {
+        Expression exception = catchNode.getException();
+        if ((exception != null) && !(exception instanceof IdentNode)) {
+            throwNotImplementedYet("es6.destructuring", exception);
+        }
+        return true;
+    }
+
+    @Override
     public Node leaveCatchNode(final CatchNode catchNode) {
         return addStatement(catchNode);
     }
 
     @Override