SEGFileStorage dataFromJSON crash

[atereshkov]

Hi, we've noticed a crash in our app in production with the following stacktrace:

SIGABRT (#0): Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'NaN number in JSON write'.

0   CoreFoundation                      0x000000018104e288 __exceptionPreprocess + 220
1   libobjc.A.dylib                     0x0000000199d7e744 objc_exception_throw + 60
2   Foundation                          0x00000001827f3458 _writeJSONValue + 836
3   Foundation                          0x000000018285dcbc ___writeJSONObject_block_invoke + 388
4   CoreFoundation                      0x0000000180ff51b8 __NSDICTIONARY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
5   CoreFoundation                      0x000000018102b4cc -[__NSFrozenDictionaryM enumerateKeysAndObjectsWithOptions:usingBlock:] + 192
6   Foundation                          0x00000001827dedc8 _writeJSONObject + 524
7   Foundation                          0x000000018285dcbc ___writeJSONObject_block_invoke + 388
8   CoreFoundation                      0x0000000180ff51b8 __NSDICTIONARY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
9   CoreFoundation                      0x000000018102b4cc -[__NSFrozenDictionaryM enumerateKeysAndObjectsWithOptions:usingBlock:] + 192
10  Foundation                          0x00000001827dedc8 _writeJSONObject + 524
11  Foundation                          0x0000000182884d9c ___writeJSONArray_block_invoke + 260
12  CoreFoundation                      0x0000000180fc2564 __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 24
13  CoreFoundation                      0x00000001810497f4 -[__NSSingleObjectArrayI enumerateObjectsWithOptions:usingBlock:] + 92
14  Foundation                          0x0000000182805200 _writeJSONArray + 356
15  Foundation                          0x0000000182855c7c -[_NSJSONWriter dataWithRootObject:options:] + 88
16  Foundation                          0x0000000182822a04 +[NSJSONSerialization dataWithJSONObject:options:error:] + 120
17  Segment                             0x0000000104adc968 -[SEGFileStorage dataFromJSON:] + 64
18  Segment                             0x0000000104adc8b8 -[SEGFileStorage setJSON:forKey:] + 200
19  Segment                             0x0000000104ae5164 -[SEGSegmentIntegration persistQueue] + 84
20  Segment                             0x0000000104ae4dc0 __34-[SEGSegmentIntegration sendData:]_block_invoke_2 + 84
21  Segment                             0x0000000104ae96a4 __seg_dispatch_specific_block_invoke + 36
22  libdispatch.dylib                   0x0000000180cb3e6c _dispatch_call_block_and_release + 32
23  libdispatch.dylib                   0x0000000180cb5a30 _dispatch_client_callout + 20
24  libdispatch.dylib                   0x0000000180cbd124 _dispatch_lane_serial_drain + 668
25  libdispatch.dylib                   0x0000000180cbdc80 _dispatch_lane_invoke + 392
26  libdispatch.dylib                   0x0000000180cc8500 _dispatch_workloop_worker_thread + 648
27  libsystem_pthread.dylib             0x00000001f10390bc _pthread_wqthread + 288
28  libsystem_pthread.dylib             0x00000001f1038e5c start_wqthread + 8

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