没有看到与我的应用程序相关的任何问题。这只发生在返回应用程序时，有时，从不在模拟器中。
有任何想法吗？：
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0xd03beb08
Crashed Thread: 7
Thread 7 name: Dispatch queue: com.apple.root.default-priority
Thread 7 Crashed:
0 libobjc.A.dylib 0x36f22f78 objc_msgSend + 16
1 CoreFoundation 0x34ea2e90 CFRetain + 76
2 CFNetwork 0x379a6f30 HostBase::lock() + 8
3 CFNetwork 0x379a6676 DispatchHost::performInvocation(void const*) + 6
4 CFNetwork 0x379a61c8 __setupTCPConnection_block_invoke_2 + 284
5 libsystem_network.dylib 0x32c2cac0 __tcp_connection_notify_complete_block_invoke_1 + 12
6 libdispatch.dylib 0x37886c52 _dispatch_call_block_and_release + 6
7 libdispatch.dylib 0x378927b4 _dispatch_worker_thread2 + 256
8 libsystem_c.dylib 0x35b45df4 _pthread_wqthread + 288
9 libsystem_c.dylib 0x35b45cc8 start_wqthread + 0