test/hotspot/jtreg/runtime/LoaderConstraints/vtableAME/Test.java

rev 49800 : 8199852: Print more information about class loaders in LinkageErrors.
Reviewed-by: dholmes

*** 1,7 ****
  /*
!  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 46,65 ****
      // though it is inheriting the method from its super class C, and Task has
      // a different class Foo than C, no LinkageError exception should be thrown
      // because the loader constraint check that would cause the LinkageError
      // should not be done.
      public static void main(String args[]) throws Exception {
!         Class<?> c = Foo.class; // forces standard class loader to load Foo
!         ClassLoader l = new PreemptingClassLoader("Task", "Foo", "I", "J");
!         l.loadClass("Foo");
!         l.loadClass("Task").newInstance();
!         Task t = new Task();
          try {
              t.m(); // Should get AME
              throw new RuntimeException("Missing AbstractMethodError exception");
          } catch (AbstractMethodError e) {
!             if (!e.getMessage().contains("Method Task.m()LFoo; is abstract")) {
                  throw new RuntimeException("Wrong AME exception thrown: " + e.getMessage());
              }
          }
      }
  
--- 46,65 ----
      // though it is inheriting the method from its super class C, and Task has
      // a different class Foo than C, no LinkageError exception should be thrown
      // because the loader constraint check that would cause the LinkageError
      // should not be done.
      public static void main(String args[]) throws Exception {
!         Class<?> c = test.Foo.class; // forces standard class loader to load Foo
!         ClassLoader l = new PreemptingClassLoader("test.Task", "test.Foo", "test.I", "test.J");
!         l.loadClass("test.Foo");
!         l.loadClass("test.Task").newInstance();
!         test.Task t = new test.Task();
          try {
              t.m(); // Should get AME
              throw new RuntimeException("Missing AbstractMethodError exception");
          } catch (AbstractMethodError e) {
!             if (!e.getMessage().contains("Method test/Task.m()Ltest/Foo; is abstract")) {
                  throw new RuntimeException("Wrong AME exception thrown: " + e.getMessage());
              }
          }
      }