Crash while accessing RLMObject in iOS Location Multitasking Mode

[obrhoff]

Hi,

I'm getting a crash while accessing Realm Objects in iOS Location Tracking Mode. Could't not work around so far.

Incident Identifier: 464368F5-4454-4482-93E7-D3E11F633AB3
CrashReporter Key:   c11560905ce12b95729eadb9e9fac6b00b208c8f
Hardware Model:      iPhone7,2
Process:             bbybike [8578]
Path:                /private/var/mobile/Containers/Bundle/Application/84619B26-636E-43C8-9F79-82BADDE62FB6/bbybike.app/bbybike
Identifier:          com.obrhoff.bbybike
Version:             273 (3.0)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2015-02-25 19:11:50.681 +0100
Launch Time:         2015-02-25 19:09:36.474 +0100
OS Version:          iOS 8.1.3 (12B466)
Report Version:      105

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Subtype: unknown at 0x0000000103a21a48
Triggered by Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib          0x000000019933e964 __kill + 8
1   bbybike                         0x000000010027a6f0 CLSSignalHandler + 224
2   libsystem_platform.dylib        0x00000001993d4958 _sigtramp + 64
3   bbybike                         0x000000010025a2bc tightdb::Table::get_link(unsigned long, unsigned long) const + 164
4   bbybike                         0x00000001000ec3c4 tightdb::Table::is_null_link(unsigned long, unsigned long) const (table.hpp:1702)
5   bbybike                         0x00000001000ec344 tightdb::RowFuncs<tightdb::Table, tightdb::BasicRow<tightdb::Table> >::is_null_link(unsigned long) const (row.hpp:361)
6   bbybike                         0x00000001000e79b4 RLMGetLink(RLMObjectBase*, unsigned long, NSString*) (RLMAccessor.mm:192)
7   bbybike                         0x00000001000eb8a0 ___ZL17RLMAccessorGetterP11RLMPropertycP8NSString_block_invoke_11 (RLMAccessor.mm:368)
8   bbybike                         0x00000001000363c4 -[BBGenericSpeechHelper scheduleTurnNotification] (BBGenericSpeechHelper.m:122)
9   bbybike                         0x0000000100036038 -[BBGenericSpeechHelper refreshSpeechHelper] (BBGenericSpeechHelper.m:89)
10  bbybike                         0x0000000100029da8 __40-[BBRouteViewController viewWillAppear:]_block_invoke122 (BBRouteViewController.m:117)
11  bbybike                         0x000000010002f460 -[BBLocationManager calculate] (BBLocationManager.m:146)
12  bbybike                         0x000000010002e800 -[BBLocationManager updateNavigationData] (BBLocationManager.m:85)
13  bbybike                         0x000000010002f93c -[BBLocationManager locationManager:didUpdateLocations:] (BBLocationManager.m:178)
14  CoreLocation                    0x0000000188bbf844 0x188bb4000 + 47172
15  CoreLocation                    0x0000000188bbc1a8 0x188bb4000 + 33192
16  CoreLocation                    0x0000000188bb6e58 0x188bb4000 + 11864
17  CoreFoundation                  0x0000000188426a24 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 16
18  CoreFoundation                  0x0000000188425b2c __CFRunLoopDoBlocks + 308
19  CoreFoundation                  0x0000000188424150 __CFRunLoopRun + 1752
20  CoreFoundation                  0x00000001883510a0 CFRunLoopRunSpecific + 392
21  GraphicsServices                0x00000001914eb5a0 GSEventRunModal + 164
22  UIKit                           0x000000018cc82aa0 UIApplicationMain + 1484
23  bbybike                         0x000000010002703c main (main.m:16)
24  libdyld.dylib                   0x0000000199226a04 start + 0

[segiddins]

Hi @DocterD, my guess is that you're encountering the same base issue that's discussed in #1260 -- that is, you need to mark via NSFileProtection that you want the file to be writeable when the app is in the background for devices with a passcode.

[obrhoff]

Yes, seems to fix the problem. :-)