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Why is the line number 0 for my source code in symbolicated crash log?At line 4 in Thread 0, the line number is 0 for (MyCodeModule.swift:0). Why is that? Is there a way to get more details about where it crashed?This is from a crash log a customer sent. The crash seems to be coming from somewhere in string processing routines.Are Swift line number references only delivered for functions/methods in Swift classes, but not free-standing functions?Also, is there a way to get symbolicated names for the libswiftCore.dylib lines in the crashed thread?Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libswiftCore.dylib 0x0000000104c04324 0x104948000 + 2868004 1 libswiftCore.dylib 0x0000000104bcbb6c 0x104948000 + 2636652 2 libswiftCore.dylib 0x00000001049c48fc 0x104948000 + 510204 3 libswiftCore.dylib 0x0000000104bd4f14 0x104948000 + 2674452 4 MyAppName 0x0000000104536e00 specialized MyFunctionOne(_:parameter:) + 339456 (MyCodeModule.swift:0) <-- HERE 5 MyAppName 0x000000010455c3b8 MyController.myMethodTwo(_:parameter:) + 492472 (MyController.swift:1090)Other pertinent lines from crash log:Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000020 VM Region Info: 0x20 is not in any region. Bytes before following region: 4367204320 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START ---> __TEXT 00000001044e4000-00000001044e8000 [ 16K] r-x/r-x SM=COW ...pp/MyAppName Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [0] Triggered by Thread: 0 Filtered syslog: None found