Program: 8859
Project: 8859
Buggy source:
@Override public boolean hasCapability(String methodName,Object target,Object[] arguments) throws RepositoryException {
  checkNotNull(methodName);
  checkNotNull(target);
  sd.checkAlive();
  if (target instanceof ItemImpl) {
    ItemDelegate dlg=((ItemImpl<?>)target).dlg;
    if (dlg.isProtected()) {
      return false;
    }
    boolean isNode=((ItemImpl<?>)target).isNode();
    Node parent=(isNode) ? (Node)target : ((ItemImpl<?>)target).getParent();
    if (!parent.isCheckedOut()) {
      return false;
    }
    if (parent.isLocked()) {
      return false;
    }
    AccessManager accessMgr=sessionContext.getAccessManager();
    long permission=Permissions.NO_PERMISSION;
    if (isNode) {
      Tree tree=((NodeDelegate)dlg).getTree();
      if ("String_Node_Str".equals(methodName)) {
        if (arguments != null && arguments.length > 0) {
          String path=PathUtils.concat(tree.getPath(),sessionContext.getOakName(arguments[0].toString()));
          return accessMgr.hasPermissions(path,Session.ACTION_ADD_NODE);
        }
      }
 else       if ("String_Node_Str".equals(methodName) || "String_Node_Str".equals(methodName) || "String_Node_Str".equals(methodName)) {
        permission=Permissions.NODE_TYPE_MANAGEMENT;
      }
 else       if ("String_Node_Str".equals(methodName)) {
        if (tree.isRoot()) {
          return false;
        }
 else {
          permission=Permissions.MODIFY_CHILD_NODE_COLLECTION;
          tree=tree.getParent();
        }
      }
 else       if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.ADD_PROPERTY;
      }
 else       if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.REMOVE_NODE;
      }
      return accessMgr.hasPermissions(tree,null,permission);
    }
 else {
      if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.MODIFY_PROPERTY;
      }
 else       if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.REMOVE_PROPERTY;
      }
      Tree tree=dlg.getParent().getTree();
      return accessMgr.hasPermissions(tree,((PropertyDelegate)dlg).getPropertyState(),permission);
    }
  }
  return true;
}

Fixed version (ground truth):
@Override public boolean hasCapability(String methodName,Object target,Object[] arguments) throws RepositoryException {
  checkNotNull(methodName);
  checkNotNull(target);
  sd.checkAlive();
  if (target instanceof ItemImpl) {
    ItemDelegate dlg=((ItemImpl<?>)target).dlg;
    if (dlg.isProtected()) {
      return false;
    }
    boolean isNode=((ItemImpl<?>)target).isNode();
    Node parent=(isNode) ? (Node)target : ((ItemImpl<?>)target).getParent();
    if (!parent.isCheckedOut()) {
      return false;
    }
    if (parent.isLocked()) {
      return false;
    }
    AccessManager accessMgr=sessionContext.getAccessManager();
    long permission=Permissions.NO_PERMISSION;
    if (isNode) {
      Tree tree=((NodeDelegate)dlg).getTree();
      if ("String_Node_Str".equals(methodName)) {
        if (arguments != null && arguments.length > 0) {
          String path=PathUtils.concat(tree.getPath(),sessionContext.getOakName(arguments[0].toString()));
          return accessMgr.hasPermissions(path,Session.ACTION_ADD_NODE);
        }
      }
 else       if ("String_Node_Str".equals(methodName) || "String_Node_Str".equals(methodName) || "String_Node_Str".equals(methodName)) {
        permission=Permissions.NODE_TYPE_MANAGEMENT;
      }
 else       if ("String_Node_Str".equals(methodName)) {
        if (tree.isRoot()) {
          return false;
        }
 else {
          permission=Permissions.MODIFY_CHILD_NODE_COLLECTION;
          tree=tree.getParent();
        }
      }
 else       if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.ADD_PROPERTY;
      }
 else       if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.REMOVE_NODE;
      }
      return accessMgr.hasPermissions(tree,null,permission);
    }
 else {
      if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.MODIFY_PROPERTY;
      }
 else       if ("String_Node_Str".equals(methodName)) {
        permission=Permissions.REMOVE_PROPERTY;
      }
      NodeDelegate parentDelegate=dlg.getParent();
      if (parentDelegate != null) {
        return accessMgr.hasPermissions(parentDelegate.getTree(),((PropertyDelegate)dlg).getPropertyState(),permission);
      }
 else {
        return accessMgr.hasPermissions(dlg.getPath(),(permission == Permissions.MODIFY_PROPERTY) ? Session.ACTION_SET_PROPERTY : Session.ACTION_REMOVE);
      }
    }
  }
  return true;
}