test/java/lang/instrument/ParallelTransformerLoaderAgent.java

*** 94,103 ****
--- 94,109 ----
                              } catch (InterruptedException ie) {
                              }
                          }
  
                          // load additional classes when called from other threads
+                         // with system class loader. If we use the same class loader as
+                         // in other thread, it will throw CircularityError since
+                         // this loading is in middle of loading TestClass2 and cause
+                         // CircularityError for JarLoader$2 which is put in placeholder
+                         // but not loaded yet. We see it twice on stack, Detail see
+                         // bug 8038468
                          if (!tName.equals("main"))
                          {
                                  loadClasses(3);
                          }
                          return null;
*** 104,117 ****
                  }
  
                  public static void
                  loadClasses( int index)
                  {
!                         ClassLoader loader = ParallelTransformerLoaderAgent.getClassLoader();
                          try
                          {
!                                 Class.forName("TestClass" + index, true, loader);
                          }
                          catch (Exception e)
                          {
                                  e.printStackTrace();
                          }
--- 110,124 ----
                  }
  
                  public static void
                  loadClasses( int index)
                  {
!                         // ClassLoader loader = ParallelTransformerLoaderAgent.getClassLoader();
                          try
                          {
!                                 //Class.forName("TestClass" + index, true, loader);
!                                 Class.forName("TestClass" + index, true, ClassLoader.getSystemClassLoader());
                          }
                          catch (Exception e)
                          {
                                  e.printStackTrace();
                          }