Program: 64021
Project: 64021
Buggy source:
/** 
 * INTERNAL: Convert all the class-name-based settings in this Descriptor to actual class-based settings. This method is used when converting a project that has been built with class names to a project with classes.
 * @param classLoader 
 */
public void convertClassNamesToClasses(ClassLoader classLoader){
  if (this.type == null) {
    try {
      if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
        try {
          this.type=(Class)AccessController.doPrivileged(new PrivilegedClassForName(this.typeName,true,classLoader));
        }
 catch (        PrivilegedActionException exception) {
          throw ValidationException.classNotFoundWhileConvertingClassNames(this.typeName,exception.getException());
        }
      }
 else {
        this.type=org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getClassForName(this.typeName,true,classLoader);
      }
    }
 catch (    ClassNotFoundException exc) {
      throw ValidationException.classNotFoundWhileConvertingClassNames(this.typeName,exc);
    }
    if (this.items != null) {
      for (      ATTRIBUTE_ITEM item : this.items.values()) {
        item.convertClassNamesToClasses(classLoader);
      }
    }
    if (this.allsubclasses != null) {
      Map<Object,CoreAttributeGroup> allGroups=new HashMap<Object,CoreAttributeGroup>();
      this.subClasses=new HashSet<CoreAttributeGroup>();
      for (      CoreAttributeGroup subClass : allsubclasses.values()) {
        subClass.convertClassNamesToClasses(classLoader);
        allGroups.put(subClass.getType(),subClass);
      }
      this.allsubclasses=allGroups;
      for (      CoreAttributeGroup subClass : allsubclasses.values()) {
        if (AttributeItem.orderInheritance(subClass,allGroups)) {
          this.insertSubClass(subClass);
        }
      }
    }
  }
}

Fixed version (ground truth):
/** 
 * INTERNAL: Convert all the class-name-based settings in this Descriptor to actual class-based settings. This method is used when converting a project that has been built with class names to a project with classes.
 * @param classLoader 
 */
public void convertClassNamesToClasses(ClassLoader classLoader){
  if (this.type == null) {
    try {
      if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
        try {
          this.type=(Class)AccessController.doPrivileged(new PrivilegedClassForName(this.typeName,true,classLoader));
        }
 catch (        PrivilegedActionException exception) {
          throw ValidationException.classNotFoundWhileConvertingClassNames(this.typeName,exception.getException());
        }
      }
 else {
        this.type=org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getClassForName(this.typeName,true,classLoader);
      }
    }
 catch (    ClassNotFoundException exc) {
      throw ValidationException.classNotFoundWhileConvertingClassNames(this.typeName,exc);
    }
    if (this.items != null) {
      for (      ATTRIBUTE_ITEM item : this.items.values()) {
        item.convertClassNamesToClasses(classLoader);
      }
    }
    if (this.allsubclasses != null) {
      Map<Object,CoreAttributeGroup> allGroups=new HashMap<Object,CoreAttributeGroup>();
      this.subClasses=new HashSet<CoreAttributeGroup>();
      for (      CoreAttributeGroup subClass : allsubclasses.values()) {
        subClass.convertClassNamesToClasses(classLoader);
        allGroups.put(subClass.getType(),subClass);
      }
      this.allsubclasses=allGroups;
      for (      CoreAttributeGroup subClass : allsubclasses.values()) {
        if (CoreAttributeItem.orderInheritance(subClass,allGroups)) {
          this.insertSubClass(subClass);
        }
      }
    }
  }
}