> On 27 Mar 2017, at 10:39, Ken Thomases <k...@codeweavers.com> wrote: > > On Mar 26, 2017, at 10:06 PM, Gerriet M. Denkmann <gerri...@icloud.com> wrote: >> >> macOS 12.3 >> >> This is a rather rare bug (never seen before): >> >> Thread 12 Crashed:: Dispatch queue: เสือ :: NSOperation 0x61800184fbd0 (QOS: >> UTILITY) >> 0 libsystem_kernel.dylib 0x00007fffb3d65dd6 __pthread_kill + 10 >> 1 libsystem_pthread.dylib 0x00007fffb3e51787 pthread_kill + 90 >> 2 libsystem_c.dylib 0x00007fffb3ccb420 abort + 129 >> 3 libc++abi.dylib 0x00007fffb282885a abort_message + 266 >> 4 libc++abi.dylib 0x00007fffb284dc4f >> default_terminate_handler() + 267 >> 5 libobjc.A.dylib 0x00007fffb3357b8e _objc_terminate() + >> 103 >> 6 libc++abi.dylib 0x00007fffb284ad69 >> std::__terminate(void (*)()) + 8 >> 7 libc++abi.dylib 0x00007fffb284ade3 std::terminate() + 51 >> 8 libdispatch.dylib 0x00007fffb3c010cc >> _dispatch_client_callout + 28 >> 9 libdispatch.dylib 0x00007fffb3c17ae5 >> _dispatch_queue_serial_drain + 896 >> 10 libdispatch.dylib 0x00007fffb3c09cd9 >> _dispatch_queue_invoke + 1046 >> 11 libdispatch.dylib 0x00007fffb3c02e70 >> _dispatch_root_queue_drain + 476 >> 12 libdispatch.dylib 0x00007fffb3c02c47 >> _dispatch_worker_thread3 + 99 >> 13 libsystem_pthread.dylib 0x00007fffb3e4e712 _pthread_wqthread + >> 1299 >> 14 libsystem_pthread.dylib 0x00007fffb3e4e1ed start_wqthread + 13 > > I would expect that some message would be logged to the system log at the > time of the crash and/or included in the crash report, just above the thread > backtraces. Was there such a message? If so, what was it?
Yes, you are right. And I have to apologise for not spotting this: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** setObjectForKey: object cannot be nil (key: SortedKeys.plist)' abort() called and the really relevant backtrace is: Application Specific Backtrace 1: 0 CoreFoundation 0x00007fff9e6c40db __exceptionPreprocess + 171 1 libobjc.A.dylib 0x00007fffb3355a2a objc_exception_throw + 48 2 CoreFoundation 0x00007fff9e5c4115 -[__NSDictionaryM setObject:forKey:] + 1061 3 Foundation 0x00007fffa02bf805 -[NSRTFD setObject:forKey:] + 257 4 Foundation 0x00007fffa02b94ee -[NSFileWrapper _newImpl] + 573 5 Foundation 0x00007fffa02b9811 -[NSFileWrapper serializedRepresentation] + 37 … My app does (in some non-main thread used by my Dispatch queue: เสือ): NSString *directoryPath = … … write some files to directoryPath and finally do: [ arrayOfStrings writeToFile: “directoryPath/SortedKeys.plist” atomically: YES ]; ← pseudo code NSURL *url = [ NSURL fileURLWithPath: directoryPath isDirectory: YES ]; NSFileWrapper *fw = [ [ NSFileWrapper alloc ] initWithURL: url options: 0 error: &outError ]; … remove a few subwrappers from fw … NSData *dataIn = fw.serializedRepresentation; ← crashed here I suspect that this might be a rare timing issue, i.e. SortedKeys.plist has not been fully written when serializedRepresentation is called. Any ideas how this could be avoided? Kind regards, Gerriet. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
