XCode的构建和分析-在发现潜在泄漏时是错误的还是正确的?

Xcode的“构建和分析”有多可靠?

我一直在寻找它发现的“潜在泄漏”,但我不明白。

代码如下:

-(void)viewDidLoad{

    self.navigationItem.leftBarButtonItem = self.editButtonItem;

    UIBarButtonItem *aBI = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
                                                                        target:self action:@selector(add:)];

    self.navigationItem.rightBarButtonItem = aBI;
    aBI.release;

    UIBarButtonItem *eB = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemOrganize
                                                                        target:self action:@selector(EinstellungenTapped:)];
    UIBarButtonItem * space = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];


    UIBarButtonItem *emailB = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCompose
                                                                       target:self action:@selector(emailTapped:)];


    NSArray* toolbarItems = [NSArray arrayWithObjects: eB,space,emailB,
                             nil];

    [self setToolbarItems: toolbarItems];

    eB.release;      // <------- Potential leak ??????
    emailB.release;  // <------- Potential leak ??????
    space.release;  // <------- Potential leak ??????
    }

为什么这三个是潜在的泄漏?

即使没有指派给国家安全局,它也在告诉我泄漏的事。

非常感谢。。。。