EXC_BAD_ACCESS in BfTask.m

[greensmartdev]

This error occurs while running a project incorporating Parse, ParseUI and Bolts frameworks compiled with bitcode on Xcode 9.4.1. The project is being run on device and the launch screen of the app even comes up, and then it crashes with the error in the title.

This is the relevant code snippet

BOOL completed; @synchronized(self.lock) { completed = self.completed; if (!completed) { [self.callbacks addObject:[^{ [executor execute:executionBlock]; } copy]]; } } if (completed) { [executor execute:executionBlock]; }

the exception is being thrown by the line:

[executor execute:executionBlock];

[flovilmart]

If the issue is in BFTask, you should open it in the Bolts repository most probably.

[greensmartdev]

Ok. Thanks. I will close this.

[flovilmart]

Can you also post The stacktrace here?

[greensmartdev]

Sure. The stack trace is:

MyProject was compiled with optimization - stepping may behave oddly; variables may not be available.

thread #5, queue = 'com.parse.asynctaskqueue.sync', stop reason = EXC_BAD_ACCESS (code=2, address=0x117ea8640)
frame #0: 0x0000000117ea8640
frame #1: 0x0000000100c012c8 MyProject-[BFTask continueWithExecutor:block:cancellationToken:](self=0x0000000117ea9690, _cmd=, executor=0x0000000117ea8df0, block=0x0000000100bd9a74, cancellationToken=) at BFTask.m:368 [opt] frame #2: 0x0000000100b8d1b8 MyProject__28-[PFAsyncTaskQueue enqueue:]_block_invoke(.block_descriptor=0x000000011990b920) at PFAsyncTaskQueue.m:50 [opt]
frame #3: 0x0000000101ff11dc libdispatch.dylib_dispatch_call_block_and_release + 24 frame #4: 0x0000000101ff119c libdispatch.dylib_dispatch_client_callout + 16
frame #5: 0x0000000101fffdfc libdispatch.dylib_dispatch_queue_serial_drain + 768 frame #6: 0x0000000101ff46ac libdispatch.dylib_dispatch_queue_invoke + 328
frame #7: 0x0000000102000d54 libdispatch.dylib_dispatch_root_queue_drain_deferred_wlh + 352 frame #8: 0x0000000102007e38 libdispatch.dylib_dispatch_workloop_worker_thread + 676
frame #9: 0x0000000182ef7e70 libsystem_pthread.dylib_pthread_wqthread + 860 frame #10: 0x0000000182ef7b08 libsystem_pthread.dylibstart_wqthread + 4

[greensmartdev]

The formatting is not the best. Hope you can decipher that

[flovilmart]

Are you able to share the project somehow?

[greensmartdev]

I am not able to share the entire project yet, but if you need something like build settings or other such things, I can post them here.

[flovilmart]

Or the same project but without the code, just the app delegate?

[greensmartdev]

You mean the appdelegate.swift file?

[flovilmart]

Yeah, if that’s waht causing the issue. That would really help reproducing

[greensmartdev]

the relevant lines in the AppDelegate.swift file are:

let configuration = ParseClientConfiguration { $0.applicationId = "$$$$$$$$$$$$$" $0.server = "$$$$$$$$$$$$" } Parse.initialize(with: configuration)

$$$$$$$$$$$$$ of course replaced with real values.

[flovilmart]

Do you have an idea if it's a crash that occur without any call to parse or if you can pinpoint a place in your code that makes it crash?

[greensmartdev]

I just commented out those lines in the AppDelegate.swift file and the code runs successfully.