EXC_BAD_ACCESS on initialization

[JerrySievert]

in DatabaseQueue.init():

        try self.init(database: Database(path: path, configuration: configuration))

results in EXC_BAD_ACCESS (code=EXC_i386_GPFLT)

code in my ViewController looks like this:

class ViewController: UIViewController,CLLocationManagerDelegate {
    var dbQueue: AnyObject?
    override func viewDidLoad() {
        do {
            dbQueue = try DatabaseQueue(path: "/db.sqlite")
        } catch {
            print("Error opening SQLite Database")
        }

Any ideas on working around this?

[JerrySievert]

this is Xcode 7 and Swift 2

[groue]

Weird. Do you have a stack trace?

[JerrySievert]

Findme(24423,0x11222d300) malloc: *** error for object 0x7f9bce2c9060: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
(lldb) bt
* thread #1: tid = 0x1e8292, 0x000000011225f286 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
    frame #0: 0x000000011225f286 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00000001122289f9 libsystem_pthread.dylib`pthread_kill + 90
    frame #2: 0x0000000111fd0a44 libsystem_c.dylib`abort + 129
    frame #3: 0x00000001120eab92 libsystem_malloc.dylib`free + 425
  * frame #4: 0x000000010f163404 GRDB`GRDB.DatabaseQueue.init (path="/db.sqlite", configuration=GRDB.Configuration @ 0x00007fff50c99460, self=0x00007f9bce2c9060, $error=ErrorType @ 0x00007fff50c99898)(path : Swift.String, configuration : GRDB.Configuration) throws -> GRDB.DatabaseQueue + 996 at DatabaseQueue.swift:44
    frame #5: 0x000000010f163644 GRDB`GRDB.DatabaseQueue.__allocating_init (path="/db.sqlite", configuration=GRDB.Configuration @ 0x00007fff50c995d0, $metatype=GRDB.DatabaseQueue, $error=ErrorType @ 0x00007fff50c99898)(path : Swift.String, configuration : GRDB.Configuration) throws -> GRDB.DatabaseQueue + 532 at DatabaseQueue.swift:0
    frame #6: 0x000000010ef65718 Findme`Findme.ViewController.viewDidLoad (self=0x00007f9bcb5b8800)() -> () + 280 at ViewController.swift:47
    frame #7: 0x000000010ef66012 Findme`@objc Findme.ViewController.viewDidLoad (Findme.ViewController)() -> () + 34 at ViewController.swift:0
    frame #8: 0x000000011011b931 UIKit`-[UIViewController loadViewIfRequired] + 1344
    frame #9: 0x000000011011bc7d UIKit`-[UIViewController view] + 27
    frame #10: 0x000000010fff90c0 UIKit`-[UIWindow addRootViewControllerViewIfPossible] + 61
    frame #11: 0x000000010fff97bd UIKit`-[UIWindow _setHidden:forced:] + 302
    frame #12: 0x000000011000b020 UIKit`-[UIWindow makeKeyAndVisible] + 43
    frame #13: 0x000000010ff8893c UIKit`-[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4131
    frame #14: 0x000000010ff8ee15 UIKit`-[UIApplication _runWithMainScene:transitionContext:completion:] + 1755
    frame #15: 0x000000010ff8bff0 UIKit`-[UIApplication workspaceDidEndTransaction:] + 188
    frame #16: 0x0000000116da77ac FrontBoardServices`-[FBSSerialQueue _performNext] + 192
    frame #17: 0x0000000116da7b1a FrontBoardServices`-[FBSSerialQueue _performNextFromRunLoopSource] + 45
    frame #18: 0x000000010f61f0a1 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    frame #19: 0x000000010f614fcc CoreFoundation`__CFRunLoopDoSources0 + 556
    frame #20: 0x000000010f614483 CoreFoundation`__CFRunLoopRun + 867
    frame #21: 0x000000010f613e98 CoreFoundation`CFRunLoopRunSpecific + 488
    frame #22: 0x000000010ff8b98d UIKit`-[UIApplication _run] + 402
    frame #23: 0x000000010ff90676 UIKit`UIApplicationMain + 171
    frame #24: 0x000000010ef697dd Findme`main + 109 at AppDelegate.swift:12
    frame #25: 0x0000000111f2992d libdyld.dylib`start + 1

[groue]

Thanks! It doesn't tell much :-)

OK I'm not sure, but the /db.sqlite path looks suspicious: one is not supposed to write in / on iOS. What about trying a more classical path, inside the documents folder?

[JerrySievert]

i had previously tried without the / - you got the stack trace from my "let's give it one more attempt but change the path" stack trace.

[groue]

Will you try with the following code, please?

let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! NSString
let databasePath = documentsPath.stringByAppendingPathComponent("db.sqlite")
dbQueue = try DatabaseQueue(path:  databasePath)

[JerrySievert]

i just did that, right as you were posting, and managed to get it to work.

thanks!

[JerrySievert]

        do {
            let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
            dbQueue = try DatabaseQueue(path: documentsPath + "/db.sqlite")
        } catch {
            print("Error opening SQLite Database")
        }

[groue]

Happy we solved it! Happy GRDB!