让crash文件中的内存地址变成函数名称，

假如程序员编译了inhouse给测试。

如果在测试过程中出现奔溃现象，我想程序员一般会来看Device Log 也就是 crash文件

如果crash文件遇到如下的情况，在重要的地方看不到函数名称。我想是一件很奔溃的事情。

 1 Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
 2 Exception Codes: KERN_INVALID_ADDRESS at 0x00000000
 3 Crashed Thread:  0
 4  
 5 Thread 0 name:  Dispatch queue: com.apple.main-thread
 6 Thread 0 Crashed:
 7 0   libsystem_c.dylib                 0x37c0fe54 strlen + 12
 8 1   libstdc++.6.dylib                 0x38202410 std::string::operator=(char const*) + 8
 9 2   FishingJoy                        0x003423a0 0x1000 + 3412896
10 3   FishingJoy                        0x00342b90 0x1000 + 3414928
11 4   FishingJoy                        0x002fb3e0 0x1000 + 3122144
12 5   FishingJoy                        0x002fae3c 0x1000 + 3120700
13 6   CoreFoundation                    0x380b4224 -[NSObject performSelector:withObject:] + 36
14 7   FishingJoy                        0x002d5614 0x1000 + 2967060
15 8   CoreFoundation                    0x380b4224 -[NSObject performSelector:withObject:] + 36
16 9   Foundation                        0x3548e750 __NSThreadPerformPerform + 344
17 10  CoreFoundation                    0x38129afc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8
18 11  CoreFoundation                    0x3812935e __CFRunLoopDoSources0 + 358
19 12  CoreFoundation                    0x3812806e __CFRunLoopRun + 646
20 13  CoreFoundation                    0x380ab4d6 CFRunLoopRunSpecific + 294
21 14  CoreFoundation                    0x380ab39e CFRunLoopRunInMode + 98
22 15  GraphicsServices                  0x37e82fc6 GSEventRunModal + 150
23 16  UIKit                             0x31c2b73c UIApplicationMain + 1084
24 17  FishingJoy                        0x0000389c 0x1000 + 10396
25 18  FishingJoy                        0x0000383c 0x1000 + 10300

其实我们可以还原出函数名称，现在需要软件“symbolicatecrash”（点击下载）和编译这台inhouse的电脑。

1、先下载symbolicatecrash，放入一个干净的目录下。顺便把crash文件也拖入此目录。

2、先把app文件给弄出来，步骤Xcode -> Window -> Organizer -> Archives -> 右击给测试的包->“Show in Finder”->“显示包内容”->复制目录“Products/Applications/”下面的.app到 symbolicatecrash同级目录下。

3、打开终端（terminal）首先把symbolicatecrash拖入终端，现在终端会显示symbolicatecrash的地址并在末尾加入空格，不要回车然后依次把crash和app都拖入终端。

现在终端应该是（我在这里因为举例，先去掉绝对目录地址。大家看到的应该是一堆）：

symbolicatecrash a.crash a.app

在末尾加入输出地址：

symbolicatecrash a.crash a.app > b.crash 回车。

现在去输出地址看 b.crash，应该已经成功显示函数名称了。

(非常重要的一点就是 symbolicatecrash 必须和编译该应用的XCode相匹配，可在Xcode包内找到：
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/PrivateFrameworks/DTDeviceKit.framework/Versions/A/Resources/symbolicatecrash)

 1 Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
 2 Exception Codes: KERN_INVALID_ADDRESS at 0x00000000
 3 Crashed Thread:  0
 4  
 5 Thread 0 name:  Dispatch queue: com.apple.main-thread
 6 Thread 0 Crashed:
 7 0   libsystem_c.dylib                 0x37c0fe54 strlen + 12
 8 1   libstdc++.6.dylib                 0x38202410 std::string::operator=(char const*) + 8
 9 2   FishingJoy                        0x003423a0 FishNetCollideHandler::JSONLoaderDidLoad(char const*) + 1936
10 3   FishingJoy                        0x00342b90 non-virtual thunk to FishNetCollideHandler::JSONLoaderDidLoad(char const*) + 32
11 4   FishingJoy                        0x002fb3e0 -[JSONLoaderDelegateEx JSONLoaderDidLoad:withResult:] + 144
12 5   FishingJoy                        0x002fae3c -[JSONLoader requestFinished:] + 352
13 6   CoreFoundation                    0x380b4224 -[NSObject performSelector:withObject:] + 36
14 7   FishingJoy                        0x002d5614 -[ASIHTTPRequest reportFinished] + 164
15 8   CoreFoundation                    0x380b4224 -[NSObject performSelector:withObject:] + 36
16 9   Foundation                        0x3548e750 __NSThreadPerformPerform + 344
17 10  CoreFoundation                    0x38129afc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8
18 11  CoreFoundation                    0x3812935e __CFRunLoopDoSources0 + 358
19 12  CoreFoundation                    0x3812806e __CFRunLoopRun + 646
20 13  CoreFoundation                    0x380ab4d6 CFRunLoopRunSpecific + 294
21 14  CoreFoundation                    0x380ab39e CFRunLoopRunInMode + 98
22 15  GraphicsServices                  0x37e82fc6 GSEventRunModal + 150
23 16  UIKit                             0x31c2b73c UIApplicationMain + 1084
24 17  FishingJoy                        0x0000389c main + 84
25 18  FishingJoy                        0x0000383c start + 32