有三个控制器,aVC push到bVC, bVC再push到cVC, 然后cVC popToRootViewController, 只有cVC会走dealloc方法, bVC不会走...
如果我cVC popTo bVC, bVC popTo aVC, 这样c b控制器都走dealloc方法，怎样让popToRootVC 之后，bVC也销毁掉？
光阴似箭催人老，日月如移越少年。
You need to check whether there is still a reference to bVC somewhere, such as in block or aVC.
The memory leak in the ARC environment should be caused by a circular reference. Check it. If it is not obvious, look at NSTimer. It may also cause a circular reference
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
You need to check whether there is still a reference to bVC somewhere, such as in block or aVC.
The memory leak in the ARC environment should be caused by a circular reference. Check it. If it is not obvious, look at NSTimer. It may also cause a circular reference