Cannot symbolicate system methods in iOS crash report -


one of beta testers has sent me few crash reports app. unable reproduce crashes, , bit confused logs. new ios debugging (this first app) , symbolicating native stack traces in general.

firstly, crashes don't appear in xcode organizer, able symbolicate files using symbolicate tool. has worked methods within app, not system methods seem crashing here. first question is, how can symbolicate these methods? user has iphone 6 , according logs architecture amd-64. don't have such device why system methods not symbolicated? asking architecture because device iphone 5c (arm) , when plugged in, xcode symbolicates system methods fine. when drag , drop 64-bit logs on device logs however, system methods not symbolicated.

my second question on logs themselves. can see below thread-0 crashing stacktraces quite different between "last exception stacktrace" paragraph , "thread-0" paragraph (different stack lenghts). expected or mean wrong symbolication?

here symbolicated output. can see 1 line symbolicated (the code app) , it's not helpful understand going on (appdelegate:13 class declaration)

by looks of , how application works highly suspect crashes when phone tried show compass calibration dialog, need symbolicate these know happening.

version:             5 (0.8.5) beta:                yes code type:           arm-64 (native) parent process:      launchd [1]  date/time:           2016-11-08 09:55:16.375 +0700 launch time:         2016-11-08 09:55:13.750 +0700 os version:          ios 8.4.1 (12h321) report version:      105  exception type:  exc_crash (sigabrt) exception codes: 0x0000000000000000, 0x0000000000000000 triggered thread:  0  last exception backtrace: 0   corefoundation                  0x1860f422c 0x185fcc000 + 1212972 1   libobjc.a.dylib                 0x197d680e4 0x197d60000 + 32996 2   corefoundation                  0x1860f40ec 0x185fcc000 + 1212652 3   foundation                      0x186fa8ed4 0x186f00000 + 691924 4   uikit                           0x18af29f88 0x18ab60000 + 3973000 5   foundation                      0x186f70d40 0x186f00000 + 462144 6   foundation                      0x186f7835c 0x186f00000 + 492380 7   uikit                           0x18b12f6a8 0x18ab60000 + 6092456 8   uikit                           0x18b12c3f0 0x18ab60000 + 6079472 9   corefoundation                  0x185fdd9e0 0x185fcc000 + 72160 10  corefoundation                  0x185fdd8c0 0x185fcc000 + 71872 11  uikit                           0x18b12c0a8 0x18ab60000 + 6078632 12  uikit                           0x18b29ad90 0x18ab60000 + 7581072 13  uikit                           0x18b1c87cc 0x18ab60000 + 6719436 14  compassui                       0x18d35c5e0 0x18d358000 + 17888 15  corelocation                    0x186857680 0x18683c000 + 112256 16  corelocation                    0x18683eb98 0x18683c000 + 11160 17  corelocation                    0x186848760 0x18683c000 + 51040 18  corelocation                    0x1868444fc 0x18683c000 + 34044 19  corelocation                    0x18683eff0 0x18683c000 + 12272 20  corefoundation                  0x1860abfc8 0x185fcc000 + 917448 21  corefoundation                  0x1860ab0d0 0x185fcc000 + 913616 22  corefoundation                  0x1860a96f4 0x185fcc000 + 906996 23  corefoundation                  0x185fd4f74 0x185fcc000 + 36724 24  graphicsservices                0x18fa376fc 0x18fa2c000 + 46844 25  uikit                           0x18abd6d94 0x18ab60000 + 486804 26  myapp                           0x100086d2c main (appdelegate.swift:13) 27  libdyld.dylib                   0x198412a08 0x198410000 + 10760   thread 0 name:  dispatch queue: com.apple.main-thread thread 0 crashed: 0   libsystem_kernel.dylib          0x000000019852b270 0x198510000 + 111216 1   libsystem_pthread.dylib         0x00000001985c915c 0x1985c4000 + 20828 2   libsystem_c.dylib               0x00000001984a2a9c 0x198440000 + 404124 3   libc++abi.dylib                 0x0000000197549414 0x197548000 + 5140 4   libc++abi.dylib                 0x0000000197568b88 0x197548000 + 134024 5   libobjc.a.dylib                 0x0000000197d683bc 0x197d60000 + 33724 6   libc++abi.dylib                 0x0000000197565bb0 0x197548000 + 121776 7   libc++abi.dylib                 0x0000000197565738 0x197548000 + 120632 8   libobjc.a.dylib                 0x0000000197d68290 0x197d60000 + 33424 9   corefoundation                  0x0000000185fd5020 0x185fcc000 + 36896 10  graphicsservices                0x000000018fa376f8 0x18fa2c000 + 46840 11  uikit                           0x000000018abd6d90 0x18ab60000 + 486800 12  myapp                           0x0000000100086d28 main (appdelegate.swift:13) 13  libdyld.dylib                   0x0000000198412a04 0x198410000 + 10756


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