当它碰到一个断点时，Xcode 5.1崩溃 [英] Xcode 5.1 crashes when it hits a break point

问题描述

我一直在开发一个应用程序，并已能够调试它。所有的突然，我不能使用断点没有Xcode 5.1崩溃。它会在断点处停止，看起来像是试图在左下角窗口中显示局部变量，然后崩溃。

I have been working on an App today and have been able to debug it. All of the sudden I can't use breakpoints without Xcode 5.1 crashing. It will stop on the breakpoint, look like it's trying to display the local variables in the bottom left window, and then crash.

这是崩溃报告：

Process:         Xcode [8084]
Path:            /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier:      com.apple.dt.Xcode
Version:         5.1 (5084)
Build Info:      IDEFrameworks-5084000000000000~21
App Item ID:     497799835
App External ID: 444172641
Code Type:       X86-64 (Native)
Parent Process:  launchd [189]
Responsible:     Xcode [8084]
User ID:         294396280

Date/Time:       2014-04-03 14:57:52.981 -0600
OS Version:      Mac OS X 10.9.2 (13C64)
Report Version:  11
Anonymous UUID:  5BFD5C24-5465-3BC8-137A-4BF1A8D48B38

Sleep/Wake UUID: F94AB6A7-9517-4F94-93DA-CC2C9154C8A7

Crashed Thread:  30  DBGLLDBSessionThread

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000

Application Specific Information:
ProductBuildVersion: 5B130a
Assertion failed: (!isNull() && "Cannot retrieve a NULL type pointer"), function getCommonPtr, file /SourceCache/lldb/lldb-310.2.36/llvm/tools/clang/include/clang/AST/Type.h, line 547.

（如果有用的话，我可以提供线程正在做的报告的其余部分）。

(I can supply the rest of the report of what the threads are doing if it is helpful).

我在代码中的各种文件和位置放置了断点。我可以在一些地方使用断点，但大多数断点导致崩溃。

I have placed breakpoints in various files and locations in the code. I am able to use breakpoints in some places, but the majority of the breakpoints cause the crash.

我浏览了几个SO页面没有运气。

I have looked through several SO pages with no luck. Among other things I have tried deleting all the breakpoints and just adding 1 back in. I have deleted and regenerated the schemes.

任何想法？

我更新到5.1.1。并且问题仍然存在：

I updated to 5.1.1. and the problem still exists:

Process:         Xcode [19072]
Path:            /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier:      com.apple.dt.Xcode
Version:         5.1.1 (5085)
Build Info:      IDEFrameworks-5085000000000000~10
Code Type:       X86-64 (Native)
Parent Process:  launchd [197]
Responsible:     Xcode [19072]
User ID:         294396280

推荐答案

我最近遇到了这个问题，以及相同的LLVM错误：

I encountered this problem as well recently with the same exact LLVM error:

断言失败：（！isNull（）&&无法检索NULL类型
指针），函数getCommonPtr

Assertion failed: (!isNull() && "Cannot retrieve a NULL type pointer"), function getCommonPtr

在我的例子中，它是一段代码，我在另一个对象中存储枚举值（Permission）作为引用，而不是一个值：

In my case it was a piece of code where I was storing an enum value (Permission) within another object as a reference, rather than a value:

正确：

@property(nonatomic, readwrite) Permission permission;

错误：

@property(nonatomic) Permission *permission;

我能够通过运行Xcode的代码分析来缩小问题范围。在我对每个类中的一个或多个警告进行更正后，我将重新运行分析，然后测试并提交。冗长但有效，现在我可以正确调试。希望这有助于引导某人在正确的方向。

I was able to narrow down the problem by running Xcode's code analysis. After I made a correction to one or more of the warnings in each class I would rerun the analysis, then test and commit. Tedious but effective, and now I can debug again properly. Hope this helps steer someone in the right direction.

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