Xcode4 Xcode 4:断点导航器崩溃

如果我单击Xcode 4.0.2中的“激活/停用断点”按钮，然后尝试添加断点，则不会生成断点。然后，如果单击“断点导航器”，Xcode将崩溃。所以，很明显有些不对劲。以下是坠机报告：

UNCAUGHT EXCEPTION (NSInvalidArgumentException): -[NSNull countByEnumeratingWithState:objects:count:]: unrecognized selector sent to instance 0x7fff701bbfa0
UserInfo: (null)
Hints: 
  0: Replacement view is installing: <IDEBreakpointNavigator: 0x201f19160 representing: <DVTExtension 0x20051eae0: Breakpoint Navigator (Xcode.IDEKit.Navigator.Breakpoints) v0.1>>
Backtrace:
  0  0x00007fff80a57796 __exceptionPreprocess (in CoreFoundation)
  1  0x00007fff822fd0f3 objc_exception_throw (in libobjc.A.dylib)
  2  0x00007fff80ab1110 +[NSObject(NSObject) doesNotRecognizeSelector:] (in CoreFoundation)
  3  0x00007fff80a2991f ___forwarding___ (in CoreFoundation)
  4  0x00007fff80a25a68 _CF_forwarding_prep_0 (in CoreFoundation)
  5  0x00000001175c2f13 -[IDEBreakpointNavigator _handleBreakpointsAdded:] (in DebuggerUI)
  6  0x00007fff846a2f26 -[NSObject(NSKeyValueObserverRegistration) _addObserver:forProperty:options:context:] (in Foundation)
  7  0x00007fff846a19cc -[NSObject(NSKeyValueObserverRegistration) addObserver:forKeyPath:options:context:] (in Foundation)
  8  0x000000010001d9b5 -[DVTObservingBlockToken _setupObservingWithOptions:] (in DVTFoundation)
  9  0x000000010001d8d3 -[DVTObservingBlockToken setHandlerBlock:forKeyPath:options:] (in DVTFoundation)
 10  0x000000010001d6d8 -[NSObject(DVTObservingConvenience) dvt_newObserverForKeyPath:options:owner:withHandlerBlock:] (in DVTFoundation)
 11  0x000000010001d662 -[NSObject(DVTObservingConvenience) dvt_newObserverForKeyPath:options:withHandlerBlock:] (in DVTFoundation)
 12  0x00000001175c1a9d -[IDEBreakpointNavigator viewDidInstall] (in DebuggerUI)
 13  0x00000001001d88a8 -[DVTControllerContentView _viewDidInstall] (in DVTKit)
 14  0x00000001001d832a -[DVTControllerContentView viewDidMoveToWindow] (in DVTKit)
 15  0x00007fff811f9b4f -[NSView _setWindow:] (in AppKit)
 16  0x00007fff81202672 -[NSView addSubview:] (in AppKit)
 17  0x00000001001de335 __42-[DVTReplacementView _setupViewController]_block_invoke_0 (in DVTKit)
 18  0x0000000100031afd DVTInvokeWithFailureHint (in DVTFoundation)
 19  0x00000001001de1d6 -[DVTReplacementView _setupViewController] (in DVTKit)
 20  0x00000001001de0b8 -[DVTReplacementView installedViewController] (in DVTKit)
 21  0x00000001001e8ff1 -[DVTReplacementView layoutTopDown] (in DVTKit)
 22  0x00000001001d90e6 __84+[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:]_block_invoke_0 (in DVTKit)
 23  0x00000001001d918f __84+[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:]_block_invoke_0 (in DVTKit)
 24  0x00000001001d918f __84+[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:]_block_invoke_0 (in DVTKit)
 25  0x00000001001d918f __84+[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:]_block_invoke_0 (in DVTKit)
 26  0x00000001001d918f __84+[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:]_block_invoke_0 (in DVTKit)
 27  0x00000001001d918f __84+[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:]_block_invoke_0 (in DVTKit)
 28  0x00000001001d918f __84+[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:]_block_invoke_0 (in DVTKit)
 29  0x00000001001d8f33 +[DVTAutoLayoutView _recursivelyLayoutSubviewsOfView:populatingSetWithLaidOutViews:] (in DVTKit)
 30  0x00000001001d8ce1 -[DVTAutoLayoutView viewWillDraw] (in DVTKit)
 31  0x00007fff812d8e19 -[NSView viewWillDraw] (in AppKit)
 32  0x00007fff812d8e19 -[NSView viewWillDraw] (in AppKit)
 33  0x00007fff812d8e19 -[NSView viewWillDraw] (in AppKit)
 34  0x00007fff812d8e19 -[NSView viewWillDraw] (in AppKit)
 35  0x00007fff812d83ca -[NSView _sendViewWillDrawInRect:clipRootView:suppressRecursion:] (in AppKit)
 36  0x00007fff81253b5d -[NSView displayIfNeeded] (in AppKit)
 37  0x00007fff8124ea46 _handleWindowNeedsDisplay (in AppKit)
 38  0x00007fff80a16b37 __CFRunLoopDoObservers (in CoreFoundation)
 39  0x00007fff809f2464 __CFRunLoopRun (in CoreFoundation)
 40  0x00007fff809f1dbf CFRunLoopRunSpecific (in CoreFoundation)
 41  0x00007fff81c057ee RunCurrentEventLoopInMode (in HIToolbox)
 42  0x00007fff81c05551 ReceiveNextEventCommon (in HIToolbox)
 43  0x00007fff81c054ac BlockUntilNextEventMatchingListInMode (in HIToolbox)
 44  0x00007fff81223e64 _DPSNextEvent (in AppKit)
 45  0x00007fff812237a9 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in AppKit)
 46  0x00007fff811e948b -[NSApplication run] (in AppKit)
 47  0x00007fff811e21a8 NSApplicationMain (in AppKit)
 48  0x0000000100000eec
 49  0x0000000000000002

未捕获异常（NSInvalidArgumentException）：-[NSNull countByEnumeratingWithState:对象：计数：]：发送到实例0x7fff701bbfa0的无法识别的选择器
UserInfo:（空）
提示：
0:替换视图正在安装：
回溯：
0 0x00007fff80a57796例外预处理（在CoreFoundation中）
1 0x00007fff822fd0f3 objc_异常_抛出（在libobjc.A.dylib中）
2 0x00007fff80ab1110+[NSObject（NSObject）不识别选择器：]（在CoreFoundation中）
3 0x00007fff80a2991f转发（在CoreFoundation中）
4 0x00007fff80a25a68_CF_转发_准备_0（在CoreFoundation中）
5 0x00000001175c2f13-[IDEBreakpointNavigator\u手柄断点添加：]（在调试UI中）
6 0x00007fff846a2f26-[NSObject（NSKeyValueObserverRegistration）\u addObserver:forProperty:options:context:（在基础中）
7 0x00007fff846a19cc-[NSObject（NSKeyValueObserverRegistration）addObserver:forKeyPath:options:context:（在基础中）
8 0x000000010001d9b5-[DVTObservingBlockToken\u setupObservingWithOptions:（在DVTFoundation中）
9 0x000000010001d8d3-[DVTObservingBlockToken setHandlerBlock:forKeyPath:options:]（在DVTFoundation中）
10 0x000000010001d6d8-[NSObject（DVTOBServing便利性）dvt_newObserverForKeyPath:选项：所有者：withHandlerBlock:（在DVTFoundation中）
11 0x000000010001d662-[NSObject（DVTOBServing便利性）dvt_newObserverForKeyPath:选项：withHandlerBlock:（在DVTFoundation中）
12 0x00000001175c1a9d-[IDEBreakpointNavigator viewDidInstall]（在调试UI中）
13 0x00000001001d88a8-[DVTControllerContentView\u viewDidInstall]（在DVTKit中）
14 0x00000001001d832a-[DVT控制器内容视图DIDMOVETOW]（在DVTKit中）
15 0x00007fff811f9b4f-[NSView\u设置窗口：]（在AppKit中）
16 0x00007fff81202672-[NSView addSubview:]（在AppKit中）
17 0x00000001001de335\uuuu42-[DVTReplacementView\uSetupViewController]\uBlock\uInvoke\u0（在DVTKit中）
18 0x0000000100031afd DVTINVOKEWITHFAILUREINT（在DVT基础中）
19 0x00000001001de1d6-[DVTReplacementView\u setupViewController]（在DVTKit中）
20 0x00000001001de0b8-[DVTReplacementView installedViewController]（在DVTKit中）
21 0x00000001001e8ff1-[DVTReplacementView layoutTopDown]（在DVTKit中）
22 0x00000001001d90e6\uuu84+[DVTAutoLayoutView\u递归布局子视图soView:PopulatingSetWithLaidOutView:]\u块\u调用\u 0（在DVTKit中）
23 0x00000001001d918f\uuuu 84+[DVTAutoLayoutView\u递归布局子视图soView:PopulatingSetWithLaidOutView:][u块\u调用\u 0（在DVTKit中）
24 0x00000001001d918f\uuuu 84+[DVTAutoLayoutView\u递归布局子视图soView:PopulatingSetWithLaidOutView:]\u块\u调用\u 0（在DVTKit中）
25 0x00000001001d918f\uuu 84+[DVTAutoLayoutView\u递归布局子视图soView:PopulatingSetWithLaidOutView:]\u块\u调用\u 0（在DVTKit中）
26 0x00000001001d918f\uuuu 84+[DVTAutoLayoutView\u递归布局子视图视图视图：使用LAIDOUtView填充集：]\u块\u调用\u 0（在DVTKit中）
27 0x00000001001d918f\uuu 84+[DVTAutoLayoutView\u递归布局子视图视图视图：使用LAIDOUtView填充集：]\u块\u调用\u 0（在DVTKit中）
28 0x00000001001d918f\uuuu 84+[DVTAutoLayoutView\u递归布局子视图视图视图：使用LAIDOUtView填充集：]\u块\u调用\u 0（在DVTKit中）
29 0x00000001001d8f33+[DVTAutoLayoutView\u递归布局子视图SoView:PoputingSetWithLaidOutView:（在DVTKit中）
30 0x00000001001d8ce1-[DVTAutoLayoutView视图将绘制]（在DVTKit中）
31 0x00007fff812d8e19-[NSView VIEW WILLDRAW]（在应用工具包中）
32 0x00007fff812d8e19-[NSView VIEW WILLDRAW]（在应用工具包中）
33 0x00007fff812d8e19-[NSView VIEW WILLDRAW]（在应用套件中）
34 0x00007fff812d8e19-[NSView VIEW WILLDRAW]（在应用工具包中）
35 0x00007fff812d83ca-[NSView\u sendViewWillDrawInRect:ClipRotView:suppressRecursion:]（在AppKit中）
36 0x00007fff81253b5d-[NSView displayIfNeeded]（在AppKit中）
37 0x00007fff8124ea46 _手柄内置显示（在应用套件中）
38 0x00007fff80a16b37 u cfrunloopdoobserver（在CoreFoundation中）
39 0x00007fff809f2464\uuuu CFRunLoopRun（在CoreFoundation中）
40 0x00007fff809f1dbf CFRunLoopRunSpecific（在CoreFoundation中）
41 0x00007fff81c057ee RunCurrentEventLoopInMode（在HIToolbox中）
42 0x00007fff81c05551接收下一个EventCommon（在HIToolbox中）
43 0x00007fff81c054ac块直到外部事件匹配列表输入模式（在HIToolbox中）
44 0x00007fff81223e64 _dpsnextent（在应用套件中）
45 0x00007fff812237a9-[n应用程序下一个EventMachingTask:untilDate:inMode:dequeue:（在应用程序工具包中）
46 0x00007fff811e948b-[N应用程序运行]（在应用程序工具包中）
47 0x00007fff811e21a8非应用程序主程序（在应用程序套件中）
48 0x0000000100000eec
49 0x0000000000000002

还有谁见过这个吗

谢谢，

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肖恩

这不是一个编程问题。这是一个发布在错误位置的普通错误报告。您应该将其发布到