如何诊断iPad-iPhone应用程序中的EXC_断点（SIGTRAP）崩溃？

我的一个iPad应用程序（至少对我来说）非特异性崩溃了。它是一种异常类型：EXC_断点。我正在考虑双重内存释放或尝试访问已释放的变量，但我希望有人能在我搜索代码时提供更多信息。完整的崩溃日志是：

Exception Type:  EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x00000102, 0x31ccebd0
Crashed Thread:  0

Thread 0 Crashed:
0   CoreFoundation                 0x0000ab96 CFRelease + 90
1   CoreFoundation                 0x0005209e __CFRunLoopTimerDeallocate + 18
2   CoreFoundation                 0x0000ac68 _CFRelease + 160
3   CoreFoundation                 0x0000ab8e CFRelease + 82
4   CoreFoundation                 0x00019130 __CFTypeCollectionRelease + 8
5   CoreFoundation                 0x00019962 __CFArrayReleaseValues + 302
6   CoreFoundation                 0x0001982c __CFArrayDeallocate + 8
7   CoreFoundation                 0x0000ac68 _CFRelease + 160
8   CoreFoundation                 0x0000ab8e CFRelease + 82
9   CoreFoundation                 0x000279c4 __CFRunLoopRun + 1092
10  CoreFoundation                 0x0002748c CFRunLoopRunSpecific + 224
11  CoreFoundation                 0x00027394 CFRunLoopRunInMode + 52
12  GraphicsServices               0x000044a4 GSEventRunModal + 108
13  GraphicsServices               0x00004550 GSEventRun + 56
14  UIKit                          0x000374ce -[UIApplication _run] + 406
15  UIKit                          0x00035148 UIApplicationMain + 664
16  MultipleDetailViews            0x00002ccc main (main.m:55)
17  MultipleDetailViews            0x00002c80 start + 32

Thread 1:
0   libSystem.B.dylib              0x0002d974 kevent + 24
1   libSystem.B.dylib              0x000d7704 _dispatch_mgr_invoke + 88
2   libSystem.B.dylib              0x000d7174 _dispatch_queue_invoke + 96
3   libSystem.B.dylib              0x000d6b98 _dispatch_worker_thread2 + 120
4   libSystem.B.dylib              0x0007b24a _pthread_wqthread + 258
5   libSystem.B.dylib              0x00073970 start_wqthread + 0

Thread 2:
0   libSystem.B.dylib              0x00001268 mach_msg_trap + 20
1   libSystem.B.dylib              0x00003354 mach_msg + 44
2   CoreFoundation                 0x00027e54 __CFRunLoopServiceMachPort + 88
3   CoreFoundation                 0x000276de __CFRunLoopRun + 350
4   CoreFoundation                 0x0002748c CFRunLoopRunSpecific + 224
5   CoreFoundation                 0x00027394 CFRunLoopRunInMode + 52
6   WebCore                        0x000060c8 RunWebThread(void*) + 332
7   libSystem.B.dylib              0x0007a886 _pthread_start + 242
8   libSystem.B.dylib              0x0006fa88 thread_start + 0

Thread 3:
0   libSystem.B.dylib              0x00001268 mach_msg_trap + 20
1   libSystem.B.dylib              0x00003354 mach_msg + 44
2   CoreFoundation                 0x00027e54 __CFRunLoopServiceMachPort + 88
3   CoreFoundation                 0x000276de __CFRunLoopRun + 350
4   CoreFoundation                 0x0002748c CFRunLoopRunSpecific + 224
5   CoreFoundation                 0x00027394 CFRunLoopRunInMode + 52
6   Foundation                     0x0002d5f6    +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 206
7   Foundation                     0x0000b192 -[NSThread main] + 38
8   Foundation                     0x00004242 __NSThread__main__ + 966
9   libSystem.B.dylib              0x0007a886 _pthread_start + 242
10  libSystem.B.dylib              0x0006fa88 thread_start + 0

Thread 4:
0   libSystem.B.dylib              0x0002568c select$DARWIN_EXTSN + 20
1   CoreFoundation                 0x0005ee72 __CFSocketManager + 582
2   libSystem.B.dylib              0x0007a886 _pthread_start + 242
3   libSystem.B.dylib              0x0006fa88 thread_start + 0

Thread 0 crashed with ARM Thread State:
    r0: 0x00000000    r1: 0x2fdff994      r2: 0x3e56e898      r3: 0x00000118
    r4: 0x00000000    r5: 0x001eb094      r6: 0x0000002c      r7: 0x2fdfec04
    r8: 0x001eb090    r9: 0x001fc098     r10: 0x00000000     r11: 0x00000000
    ip: 0x3e58f038    sp: 0x2fdfebfc      lr: 0x31d160a5      pc: 0x31cceb96
  cpsr: 0x600f0030

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我也得到了这个错误，并修复了它。此人很可能正在运行OS3，而您正在使用OS4中的代码块。您需要在库上设置弱链接，以便它能够正确加载。在LLVM-weak_library/usr/lib/libSystem.B.dylib的生成设置中，您是否尝试过“全部清除”和从头开始的重建？我发现很多神秘的崩溃都是因为构建系统没有在应该的时候重建东西。您可能还想删除生成目录并从头开始重新生成以确保安全。是否已将NSZombeEnabled设置为“是”？启用该功能，运行静态分析器并使用断点逐步遍历代码。这肯定会使情况更加明朗。这样做，并在这里发布更新。有了这些信息，也许我们可以解决这个问题。。。。