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Type:
Bug
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Resolution: Duplicate
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Priority:
Trivial - P5
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None
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Affects Version/s: None
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Component/s: None
After updating RealmSwift from 10.9.0 to 10.11.0, there is a bug where, after deleting an object on which an observer is registered, the next write transaction will crash the program.
This definitely worked up until 10.9 (not sure about 10.10, but it's broken after updating to 10.11).
Code Sample
Simply run the app and tap the button to cause it to crash.
Version of Realm and Tooling
- Realm framework version: RealmSwift SPM Package v10.11.0
- Xcode version: 12.5.1 (12E507)
- iOS/OSX version: macOS 11.5.1 (20G80), iOS 14.7.1 (18G82)
- Dependency manager + version: SPM, the one shipped w/ the above-specified Xcode version
Backtrace
(lldb) bt all thread #1, queue = 'com.apple.main-thread' frame #0: 0x00000001cd82a908 libsystem_kernel.dylib`mach_msg_trap + 8 frame #1: 0x00000001cd829d0c libsystem_kernel.dylib`mach_msg + 72 frame #2: 0x00000001a1fe3db8 CoreFoundation`__CFRunLoopServiceMachPort + 368 frame #3: 0x00000001a1fde1b8 CoreFoundation`__CFRunLoopRun + 1184 frame #4: 0x00000001a1fdd7d0 CoreFoundation`CFRunLoopRunSpecific + 572 frame #5: 0x00000001b871f570 GraphicsServices`GSEventRunModal + 160 frame #6: 0x00000001a490a2d0 UIKitCore`-[UIApplication _run] + 1052 frame #7: 0x00000001a490f84c UIKitCore`UIApplicationMain + 164 frame #8: 0x00000001b513487c libswiftUIKit.dylib`UIKit.UIApplicationMain(Swift.Int32, Swift.Optional<Swift.UnsafeMutablePointer<Swift.UnsafeMutablePointer<Swift.Int8>>>, Swift.Optional<Swift.String>, Swift.Optional<Swift.String>) -> Swift.Int32 + 100 frame #9: 0x000000010295a19c LKRealmCrashTest`static UIApplicationDelegate.main() at <compiler-generated>:0 frame #10: 0x000000010295a114 LKRealmCrashTest`static AppDelegate.$main(self=LKRealmCrashTest.AppDelegate) at AppDelegate.swift:10:1 frame #11: 0x000000010295a234 LKRealmCrashTest`main at <compiler-generated>:0 frame #12: 0x00000001a1cbc140 libdyld.dylib`start + 4 thread #4 frame #0: 0x00000001e99d4864 libsystem_pthread.dylib`start_wqthread thread #5, name = 'com.apple.uikit.eventfetch-thread' frame #0: 0x00000001cd82a908 libsystem_kernel.dylib`mach_msg_trap + 8 frame #1: 0x00000001cd829d0c libsystem_kernel.dylib`mach_msg + 72 frame #2: 0x00000001a1fe3db8 CoreFoundation`__CFRunLoopServiceMachPort + 368 frame #3: 0x00000001a1fde1b8 CoreFoundation`__CFRunLoopRun + 1184 frame #4: 0x00000001a1fdd7d0 CoreFoundation`CFRunLoopRunSpecific + 572 frame #5: 0x00000001a323ae64 Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 228 frame #6: 0x00000001a323ad44 Foundation`-[NSRunLoop(NSRunLoop) runUntilDate:] + 88 frame #7: 0x00000001a49b6e10 UIKitCore`-[UIEventFetcher threadMain] + 504 frame #8: 0x00000001a3397d90 Foundation`__NSThread__start__ + 848 frame #9: 0x00000001e99cfc74 libsystem_pthread.dylib`_pthread_start + 288 * thread #9, name = 'Realm notification listener', stop reason = signal SIGABRT frame #0: 0x00000001cd84e7b0 libsystem_kernel.dylib`__pthread_kill + 8 frame #1: 0x00000001e99d09c0 libsystem_pthread.dylib`pthread_kill + 212 frame #2: 0x00000001aac9ca38 libsystem_c.dylib`abort + 120 * frame #3: 0x00000001036a2b5c LKRealmCrashTest`::please_report_this_issue_in_github_realm_realm_core() at terminate.cpp:50:5 frame #4: 0x00000001036a2ec4 LKRealmCrashTest`realm::util::terminate_internal(ss=0x000000016d90a608) at terminate.cpp:123:5 frame #5: 0x00000001036a2fc4 LKRealmCrashTest`realm::util::terminate(message="Assertion failed: m_table", file="/Users/lukas/Library/Developer/Xcode/DerivedData/LKRealmCrashTest-bnxdefajsfeddrbvaxnfxmktpmfk/SourcePackages/checkouts/realm-core/src/realm/object-store/impl/object_notifier.cpp", line=55, values=0x000000016d90a788) at terminate.cpp:140:5 frame #6: 0x0000000102fc4c30 LKRealmCrashTest`realm::_impl::ObjectNotifier::do_add_required_change_info(this=0x0000000106b16088, info=0x00000002818a9a40) at object_notifier.cpp:55:9 frame #7: 0x0000000102f8c334 LKRealmCrashTest`realm::_impl::CollectionNotifier::add_required_change_info(this=0x0000000106b16088, info=0x00000002818a9a40) at collection_notifier.cpp:245:10 frame #8: 0x0000000102fcff84 LKRealmCrashTest`realm::_impl::RealmCoordinator::run_async_notifiers(this=0x0000000106a0b438) at realm_coordinator.cpp:1059:19 frame #9: 0x0000000102fcf40c LKRealmCrashTest`realm::_impl::RealmCoordinator::on_change(this=0x0000000106a0b438) at realm_coordinator.cpp:818:5 frame #10: 0x0000000102f63254 LKRealmCrashTest`realm::_impl::ExternalCommitHelper::listen(this=0x00000002835deeb0) at external_commit_helper.cpp:234:18 frame #11: 0x0000000102f665c8 LKRealmCrashTest`realm::_impl::ExternalCommitHelper::ExternalCommitHelper(this=0x0000000283988ba8)::$_0::operator()() const at external_commit_helper.cpp:175:13 frame #12: 0x0000000102f66564 LKRealmCrashTest`decltype(__f=0x0000000283988ba8)::$_0>(fp)()) std::__1::__invoke<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0>(realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0&&) at type_traits:3747:1 frame #13: 0x0000000102f664c4 LKRealmCrashTest`void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0>(__t=size=2, (null)=__tuple_indices<> @ 0x000000016d90af6f)::$_0>&, std::__1::__tuple_indices<>) at thread:280:5 frame #14: 0x0000000102f65bc8 LKRealmCrashTest`void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >(__vp=0x0000000283988ba0) at thread:291:5 frame #15: 0x00000001e99cfc74 libsystem_pthread.dylib`_pthread_start + 288 (lldb)