iOS崩溃核心位置CFBasicHashCreateCopy？
我已经通过Crashlytics报告了这个问题，虽然我一直无法在本地复制它，所以除了下面的堆栈跟踪之外我没什么可去的。不确定堆栈跟踪中是否有对CoreLocation的引用与它有任何关系，但我不确定可能是什么原因。 我的项目正在使用ARC。 任何线索？
Thread : Crashed: com.apple.CoreLocation.ConnectionClient.0x14eb3510.events 0 CoreFoundation 0x307769a8 CFBasicHashCreateCopy + 712 1 libobjc.A.dylib 0x3afd1a19 object_setClass + 24 2 CoreFoundation 0x30782d0f CFDictionaryCreateMutableCopy + 154 3 CoreLocation 0x30d0a8f3 CLLocationCoordinate2DGetDistanceFrom + 47590 4 CoreLocation 0x30d2d607 CLClientCreateIso6709Notation + 49626 5 CoreFoundation 0x30786d45 __CFDictionaryApplyFunction_block_invoke + 16 6 CoreFoundation 0x30772cd4 CFBasicHashApply + 128 7 CoreFoundation 0x3077be27 CFDictionaryApplyFunction + 154 8 CoreLocation 0x30d2cc25 CLClientCreateIso6709Notation + 47096 9 CoreLocation 0x30d2b625 CLClientCreateIso6709Notation + 41464 10 libxpc.dylib 0x3b5fc3a9 _xpc_connection_call_event_handler + 40 11 libxpc.dylib 0x3b5fee67 do_mach_notify_port_destroyed + 122 12 libxpc.dylib 0x3b5fedd1 _Xmach_notify_port_destroyed + 104 13 libxpc.dylib 0x3b5fed47 notify_server + 62 14 libxpc.dylib 0x3b5fa9cf _xpc_connection_mach_event + 1926 15 libdispatch.dylib 0x3b4bdf43 _dispatch_mach_msg_invoke + 118 16 libdispatch.dylib 0x3b4c0c71 _dispatch_queue_drain + 412 17 libdispatch.dylib 0x3b4bda6b _dispatch_mach_invoke + 78 18 libdispatch.dylib 0x3b4c0c71 _dispatch_queue_drain + 412 19 libdispatch.dylib 0x3b4bdc6f _dispatch_queue_invoke + 42 20 libdispatch.dylib 0x3b4c0c71 _dispatch_queue_drain + 412 21 libdispatch.dylib 0x3b4bdc6f _dispatch_queue_invoke + 42 22 libdispatch.dylib 0x3b4c15f1 _dispatch_root_queue_drain + 76 23 libdispatch.dylib 0x3b4c18dd _dispatch_worker_thread2 + 56 24 libsystem_pthread.dylib 0x3b5ecc17 _pthread_wqthread + 298 这是另一个可能相关的。
Crashed: com.apple.CoreLocation.ConnectionClient.0x17665330.events EXC_BAD_ACCESS KERN_INVALID_ADDRESS at 0x11755e44 Thread : Crashed: com.apple.CoreLocation.ConnectionClient.0x17665330.events 0 libobjc.A.dylib 0x381db626 objc_msgSend + 5 1 CoreFoundation 0x2d979d75 CFDictionaryCreateMutableCopy + 320 2 CoreLocation 0x2df018f3 (null) + 47590 3 CoreLocation 0x2df24607 (null) + 49626 4 CoreFoundation 0x2d97dd05 __CFDictionaryApplyFunction_block_invoke + 16 5 CoreFoundation 0x2d969c94 CFBasicHashApply + 128 6 CoreFoundation 0x2d972de7 CFDictionaryApplyFunction + 154 7 CoreLocation 0x2df23c25 (null) + 47096 8 CoreLocation 0x2df22625 (null) + 41464 9 libxpc.dylib 0x387fb3a9 _xpc_connection_call_event_handler + 40 10 libxpc.dylib 0x387fde67 do_mach_notify_port_destroyed + 122 11 libxpc.dylib 0x387fddd1 _Xmach_notify_port_destroyed + 104 12 libxpc.dylib 0x387fdd47 notify_server + 62 13 libxpc.dylib 0x387f99cf _xpc_connection_mach_event + 1926 14 libdispatch.dylib 0x386bcf43 _dispatch_mach_msg_invoke + 118 15 libdispatch.dylib 0x386bfc71 _dispatch_queue_drain + 412 16 libdispatch.dylib 0x386bca6b _dispatch_mach_invoke + 78 17 libdispatch.dylib 0x386bfc71 _dispatch_queue_drain + 412 18 libdispatch.dylib 0x386bcc6f _dispatch_queue_invoke + 42 19 libdispatch.dylib 0x386bfc71 _dispatch_queue_drain + 412 20 libdispatch.dylib 0x386bcc6f _dispatch_queue_invoke + 42 21 libdispatch.dylib 0x386c05f1 _dispatch_root_queue_drain + 76 22 libdispatch.dylib 0x386c08dd _dispatch_worker_thread2 + 56 23 libsystem_pthread.dylib 0x387ebc17 _pthread_wqthread + 298
您已经让系统将消息发送到一个对象应该存在的坏内存位置。 所以我的建议是启用僵尸检测（编辑方案，然后选择诊断选项卡，勾选启用僵尸对象）并重新执行测试方案，特别是导致CoreLocation事件的任何事情。
然后，当核心位置向已发布的对象发送消息时，您将知道该对象最初被释放的内容（因为它通过此调试设置被人工保持为僵尸对象）。