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Editorial Team
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Asked: 2026-05-27T18:23:05+00:00

i’m running my app are running fine until i resume from background or with

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i’m running my app are running fine until i resume from background or with out location services, the app will crash.

the crash log shows Exception Type: EXC_CRASH (SIGTRAP)

Anybody know how to debug it ?

Exception Type:  EXC_CRASH (SIGTRAP)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib          0x36398848 __kill + 8
1   FrogFinder                      0x000b5034 0x69000 + 311348
2   CoreFoundation                  0x3447e980 __handleUncaughtException + 68
3   libobjc.A.dylib                 0x346ce2ca _objc_terminate + 122
4   libc++abi.dylib                 0x338a33be _ZL19safe_handler_callerPFvvE + 70
5   libc++abi.dylib                 0x338a344a std::terminate() + 14
6   libc++abi.dylib                 0x338a481e __cxa_rethrow + 82
7   libobjc.A.dylib                 0x346ce22e objc_exception_rethrow + 6
8   CoreFoundation                  0x343d453e CFRunLoopRunSpecific + 398
9   CoreFoundation                  0x343d439e CFRunLoopRunInMode + 98
10  GraphicsServices                0x30c58fc6 GSEventRunModal + 150
11  UIKit                           0x3785573c UIApplicationMain + 1084
12  FrogFinder                      0x0006a7e6 0x69000 + 6118
13  FrogFinder                      0x0006a7a4 0x69000 + 6052

Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0   libsystem_kernel.dylib          0x363893b4 kevent + 24
1   libdispatch.dylib               0x370b3e78 _dispatch_mgr_invoke + 708
2   libdispatch.dylib               0x370b3b96 _dispatch_mgr_thread + 30

Thread 2 name:  WebThread
Thread 2:
0   libsystem_kernel.dylib          0x36389010 mach_msg_trap + 20
1   libsystem_kernel.dylib          0x36389206 mach_msg + 50
2   CoreFoundation                  0x3445241c __CFRunLoopServiceMachPort + 120
3   CoreFoundation                  0x34451154 __CFRunLoopRun + 876
4   CoreFoundation                  0x343d44d6 CFRunLoopRunSpecific + 294
5   CoreFoundation                  0x343d439e CFRunLoopRunInMode + 98
6   WebCore                         0x368a8128 _ZL12RunWebThreadPv + 396
7   libsystem_c.dylib               0x33224c16 _pthread_start + 314
8   libsystem_c.dylib               0x33224ad0 thread_start + 0

Thread 3 name:  com.apple.NSURLConnectionLoader
Thread 3:
0   libsystem_kernel.dylib          0x36389010 mach_msg_trap + 20
1   libsystem_kernel.dylib          0x36389206 mach_msg + 50
2   CoreFoundation                  0x3445241c __CFRunLoopServiceMachPort + 120
3   CoreFoundation                  0x34451154 __CFRunLoopRun + 876
4   CoreFoundation                  0x343d44d6 CFRunLoopRunSpecific + 294
5   CoreFoundation                  0x343d439e CFRunLoopRunInMode + 98
6   Foundation                      0x35dd4bc2 +[NSURLConnection(Loader) _resourceLoadLoop:] + 302
7   Foundation                      0x35dd4a8a -[NSThread main] + 66
8   Foundation                      0x35e6859a __NSThread__main__ + 1042
9   libsystem_c.dylib               0x33224c16 _pthread_start + 314
10  libsystem_c.dylib               0x33224ad0 thread_start + 0

Thread 4:
0   libsystem_kernel.dylib          0x36389010 mach_msg_trap + 20
1   libsystem_kernel.dylib          0x36389206 mach_msg + 50
2   CoreFoundation                  0x3445241c __CFRunLoopServiceMachPort + 120
3   CoreFoundation                  0x34451154 __CFRunLoopRun + 876
4   CoreFoundation                  0x343d44d6 CFRunLoopRunSpecific + 294
5   CoreFoundation                  0x343d439e CFRunLoopRunInMode + 98
6   Foundation                      0x35dc8b7e -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 250
7   Foundation                      0x35de252c -[NSRunLoop(NSRunLoop) run] + 72
8   FrogFinder                      0x000c8da6 0x69000 + 392614
9   Foundation                      0x35dd4a8a -[NSThread main] + 66
10  Foundation                      0x35e6859a __NSThread__main__ + 1042
11  libsystem_c.dylib               0x33224c16 _pthread_start + 314
12  libsystem_c.dylib               0x33224ad0 thread_start + 0

Thread 5 name:  NetworkIO
Thread 5:
0   libsystem_kernel.dylib          0x36389010 mach_msg_trap + 20
1   libsystem_kernel.dylib          0x36389206 mach_msg + 50
2   CoreFoundation                  0x3445241c __CFRunLoopServiceMachPort + 120
3   CoreFoundation                  0x34451154 __CFRunLoopRun + 876
4   CoreFoundation                  0x343d44d6 CFRunLoopRunSpecific + 294
5   CoreFoundation                  0x343d439e CFRunLoopRunInMode + 98
6   MapKit                          0x38030412 0x38022000 + 58386
7   Foundation                      0x35dd4a8a -[NSThread main] + 66
8   Foundation                      0x35e6859a __NSThread__main__ + 1042
9   libsystem_c.dylib               0x33224c16 _pthread_start + 314
10  libsystem_c.dylib               0x33224ad0 thread_start + 0
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1 Answer

  1. Editorial Team

    You can also turn on Exception breakpoints. In XCode 4 click your project and choose the breakpoints tab. At the bottom of that tab is | + | – | search bar. Choose the + item and “Add Exeception Breakpoint”. You can leave it at All or choose Objective-C. This way you will break in the debugger and be able to see what caused the exeception.

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