1 /*

     2  * @test /nodynamiccopyright/

     3  * @bug 8231827

     4  * @summary Basic pattern bindings scope test

     5  * @compile/fail/ref=DuplicateBindingTest.out -XDrawDiagnostics --enable-preview -source ${jdk.version} DuplicateBindingTest.java

     6  */

     7 

     8 public class DuplicateBindingTest {

     9 

    10     int f;

    11 

    12     public static void main(String[] args) {

    13 

    14         if (args != null) {

    15             int s;

    16             if (args[0] instanceof String s) { // NOT OK. Redef same scope.

    17             }

    18             if (args[0] instanceof String f) { // OK to redef field.

    19             }

    20         }

    21     }

    22 }