app crash at com.apple.root.default-qos Dispatch queue

Question

Created Sep ’23

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I implemented a multithreaded app, but there was a thread-related crash in the app, I don't understand why this happened, the corresponding stack trace is as follows.


Thread 15 Crashed::  Dispatch queue: com.apple.root.default-qos
0   libsystem_kernel.dylib        	       0x1a849ad98 __pthread_kill + 8
1   libsystem_pthread.dylib       	       0x1a84cfee0 pthread_kill + 288
2   libsystem_c.dylib             	       0x1a840a340 abort + 168
3   libc++abi.dylib               	       0x1a848ab08 abort_message + 132
4   libc++abi.dylib               	       0x1a847a950 demangling_terminate_handler() + 336
5   libobjc.A.dylib               	       0x1a8370320 _objc_terminate() + 144
6   libc++abi.dylib               	       0x1a8489ea4 std::__terminate(void (*)()) + 20
7   libc++abi.dylib               	       0x1a8489e40 std::terminate() + 64
8   libdispatch.dylib             	       0x1a830c1c8 _dispatch_client_callout + 40
9   libdispatch.dylib             	       0x1a831da04 _dispatch_root_queue_drain + 680
10  libdispatch.dylib             	       0x1a831e104 _dispatch_worker_thread2 + 164
11  libsystem_pthread.dylib       	       0x1a84cc324 _pthread_wqthread + 228
12  libsystem_pthread.dylib       	       0x1a84cb080 start_wqthread + 8

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Answer 1

c4m3l OP

Sep ’23

I found a solution. Thank you

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Answer 2

DTS Engineer OP

Apple

Sep ’23

I found a solution.

Care to share it? Just in case someone else stumbles across this thread in the future.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

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Answer 3

c4m3l OP

Sep ’23

An __exceptionPreprocess problem has been found in the main thread's always, which is in the main thread, and I'm not sure why it affects the com.apple.root.default-qos thread. With a fix to the __exceptionPreprocess error in the thread, the crash did not occur again.

0