Raw Data RestKit NSError dealloc Crash

Question

Trying to figure out a problem that I saw in production assemblies, and FINALLY was able to reproduce it during testing. Using RestKit v0.23.1, when you execute RKManagedObjectRequestOperation using the following code (when connecting to tools), I get an “Objective-C” message on an freed up object “NSError (zombie)”, and the application crashes every time the objects respond with JSON - if the answer is similar to "objects = ();" there is no glitch - so I guess somewhere in the display or storage of RestKit / Core Data?

    RKManagedObjectRequestOperation *objectRequestOperation = [_objectManager managedObjectRequestOperationWithRequest:request managedObjectContext:_objectManager.managedObjectStore.mainQueueManagedObjectContext success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
        DDLogInfo(@"INSIDE SUCCESS BLOCK");
    } failure:^(RKObjectRequestOperation *operation, NSError *error) {
        DDLogInfo(@"INSIDE ERROR BLOCK");
    }];

    [objectRequestOperation setWillMapDeserializedResponseBlock:^id(id deserializedResponseBody) {
        DDLogInfo(@"Response JSON: %@", deserializedResponseBody);

        return deserializedResponseBody;
    }];

    objectRequestOperation.savesToPersistentStore = YES;
    [objectRequestOperation start];

JSON setWillMapDeserializedResponseBlock, . , crashlytics:

Thread : Crashed: NSOperationQueue Serial Queue
0  libobjc.A.dylib                0x37dd4626 objc_msgSend + 5
1  Foundation                     0x2df5802d -[NSError dealloc] + 60
2  libobjc.A.dylib                0x37dd9b6b objc_object::sidetable_release(bool) + 174
3  libobjc.A.dylib                0x37dda0d3 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 358
4  CoreFoundation                 0x2d569501 _CFAutoreleasePoolPop + 16
5  Foundation                     0x2df69999 -[__NSOperationInternal _start:] + 1064
6  Foundation                     0x2e00d745 __NSOQSchedule_f + 60
7  libdispatch.dylib              0x382b8cbd _dispatch_queue_drain + 488
8  libdispatch.dylib              0x382b5c6f _dispatch_queue_invoke + 42
9  libdispatch.dylib              0x382b95f1 _dispatch_root_queue_drain + 76
10 libdispatch.dylib              0x382b98dd _dispatch_worker_thread2 + 56
11 libsystem_pthread.dylib        0x383e4c17 _pthread_wqthread + 298

Answer 1

RestKit. , , Apple. , Core, . Core Data , .

, , :

- API .

, :

while(![[UIApplication sharedApplication] isProtectedDataAvailable]) {
        [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.5f]];
   }

, :

[_coordinator addPersistentStoreWithType:NSSQLiteStoreType
                               configuration:nil
                                         URL:url
            options:@{NSPersistentStoreFileProtectionKey:NSFileProtectionNone}
                                       error:&error];

, , . , , , . API .

. , . , sqlite .

    #import <sqlite3.h>

    sqlite3 *dbConnection;
    if (sqlite3_open([[url absoluteString] UTF8String], &dbConnection) != SQLITE_OK) {
        NSLog(@"[SQLITE] Unable to open database!");
    }
    sqlite3_stmt *statement = nil;
    sqlite3_prepare_v2(dbConnection, "PRAGMA quick_check;", -1, &statement, NULL);
    NSString *result = nil;
    while (sqlite3_step(statement) == SQLITE_ROW) {
        for (int i=0; i<sqlite3_column_count(statement); i++) {
            int colType = sqlite3_column_type(statement, i);
            if (colType == SQLITE_TEXT) {
                const unsigned char *col = sqlite3_column_text(statement, i);
                result = [NSString stringWithFormat:@"%s", col];
            } else {
                NSLog(@"[SQLITE] UNKNOWN DATATYPE");
            }
        }
    }
    sqlite3_close(dbConnection);

sqlite PRAGMA. quick_check, integrity_check, . , , [result isEqualToString: @ "ok" ]