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

@@ -1031,11 +1031,11 @@
             }
         }
 
         joinOnLabel(catchLabel);
         for(final CatchNode catchNode: tryNode.getCatches()) {
-            final IdentNode exception = catchNode.getException();
+            final IdentNode exception = (IdentNode) catchNode.getException();
             onAssignment(exception, LvarType.OBJECT);
             final Expression condition = catchNode.getExceptionCondition();
             if(condition != null) {
                 visitExpression(condition);
             }