Xcode：EXC_BREAKPOINT（EXC_ARM_BREAKPOINT，子代码= 0xe7ffdefe） [英] Xcode: EXC_BREAKPOINT (EXC_ARM_BREAKPOINT, subcode=0xe7ffdefe)

问题描述

我在iOS7设备上运行我的应用时收到EXC_BREAKPOINT（EXC_ARM_BREAKPOINT，子码= 0xe7ffdefe）错误。
问题是，它在iOS7模拟器上运行顺畅。

通过使用断点，我发现错误发生在第6行。

 必需init（编码器aDecoder：NSCoder）{
 personPicker = ABPeoplePickerNavigationController（）
 super.init（编码器：aDecoder）
 personPicker.peoplePickerDelegate = self 
} 
 / * error line * / @IBAction func BPressed（sender：AnyObject）{
 self.presentViewController（personPicker，animated：true，completion：nil ）
} 
  

此错误是新的，直到我才出现在我的设备上已将这些行添加到代码中;

  let url = NSURL（string：urlPath）
 let request = NSURLRequest （URL：url！）
 NSURLConnection.sendAsynchronousRequest（request，queue：NSOperationQueue.mainQueue（））{b（b，响应，数据，错误）
 println（NSString（data：data，encoding：NSUTF8StringEncoding）） 
} 
  

此外;调试器将错误指向此行：

  0x16a7f0：陷阱
  

并在控制台中提供此输出：

致命错误：尝试从空指针创建一个非托管实例

即使我在故事板中没有更改任何内容，此错误也会导致设备出现黑屏。 / p>

感谢您抽出宝贵时间。

编辑：此错误显示搜索引擎没有结果，但我认为它可能与obj-c有关。

解决方案

今天我在针对旧iPad 2测试一些Swift代码时遇到了这个问题（我认为它是iPad 2 - 它的型号为MD368LL / A），运行iOS 8.1.3。事实证明，问题出现在我所谓的地方：

  Int（arc4random（）％< someInt>） 
  

这适用于以后的iPad，iPhone5S，iPhone6等。通过将代码更改为：

  Int（UInt32（arc4random（））％UInt32（< someInt>））
  

我认为这是旧硬件上的寄存器溢出。

I'm getting an EXC_BREAKPOINT (EXC_ARM_BREAKPOINT, subcode=0xe7ffdefe) error while running my app on a iOS7 device. The thing is, it runs smoothly on iOS7 simulator.

By using breakpoints, I've found the error occurs in line 6.

required init(coder aDecoder: NSCoder) {
    personPicker = ABPeoplePickerNavigationController()
    super.init(coder: aDecoder)
    personPicker.peoplePickerDelegate = self
}
 /*error line*/ @IBAction func BPressed(sender: AnyObject) {
 self.presentViewController(personPicker, animated: true, completion: nil)
}

This error is new, and didn't appeared on my device until I've added these lines into the code;

        let url = NSURL(string: urlPath)
        let request = NSURLRequest(URL: url!)
        NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue()) {(response, data, error) in
            println(NSString(data: data, encoding: NSUTF8StringEncoding))
        }

Also; the debugger points the error to this line:

0x16a7f0:  trap 

And gives this output in the console:

fatal error: attempt to create an Unmanaged instance from a null pointer

This error causes a black screen on device even though I've changed nothing in storyboard.

Thank you for taking your time.

Edit: This error showed no result in search engines, but I think it may be related to obj-c.

解决方案

I ran across this issue today when testing some Swift code against an old iPad 2 (I think it's an iPad 2 -- it's model MD368LL/A), running iOS 8.1.3. It turned out that the problem existed everywhere that I was calling something like:

Int(arc4random() % <someInt>)

This worked fine on later iPads, iPhone5S, iPhone6, etc. Fixed by changing code to:

Int(UInt32(arc4random()) % UInt32(<someInt>))

I think it was a register overflow on the older hardware.

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