20523979: Swift 1.2 - Runtime crash in 32-bit iOS simulator with ReactiveCocoa library

[openradar-mirror]

Description

Summary:
Using Xcode version 6.3 (6D570), the code below crashes in the iOS simulator when using the iPhone 5 simulator (or other 32-bit simulator) while it seems to work fine with the iPhone 6 simulator.

ViewController.swift:

let producer: SignalProducer<Int, NoError> = SignalProducer { observer, _ in
  sendNext(observer, 1)
  sendCompleted(observer)
}

producer |> collect |> start(
  next: { x in println("Next value \(x)") },
  completed: { _ in println("Completed") }
)

The sample code uses the ReactiveCocoa library, which is included in the attached sample project along with its dependencies (at version https://github.com/ReactiveCocoa/ReactiveCocoa/releases/tag/v3.0-alpha.4)

Steps to Reproduce:

1. Unzip the attached rac-crash-radar.zip and open the included rac-crash-radar.xcodeproject in Xcode

2. Make sure the scheme "rac-crash-radar" is selected, and select iPhone 5 as the simulator device

3. Run the app (cmd+r)

Expected Results:
App runs successfully, and the following is printed in the console (this is what we get when running with the iPhone 6 simulator):

Next value [1]
Completed

Actual Results:
App crashes with EXC_BAD_ACCESS. See attached rac-crash-radar.log for full stack trace.

Version:
Xcode version 6.3 (6D570), OS X 10.10.3 (14D131)

Notes:
Here's the related ReactiveCocoa issue: ReactiveCocoa/ReactiveCocoa#1888

Configuration:
iOS (iPhone 5) simulator running on a MacBook Pro (Retina, Mid 2012) with. Crash seems to happen on every run on my machine.

Attachments:
'rac-crash-radar.log' and 'rac-crash-radar.zip' were successfully uploaded.

rac-crash-radar.log:

(lldb) bt

• thread 22108400: Swift 2.0b4: Allow if let and guard let to assign to self in failable value type initializers #1: tid = 0xca3ce, 0x02256996 libswiftCore.dylib_swift_release_dealloc + 6, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x38) frame #0: 0x02256996 libswiftCore.dylib_swift_release_dealloc + 6
  frame 22108400: Swift 2.0b4: Allow if let and guard let to assign to self in failable value type initializers #1: 0x001d1c6b ReactiveCocoa___lldb_unnamed_function261$$ReactiveCocoa + 171 frame #2: 0x001b6573 ReactiveCocoa___lldb_unnamed_function17$$ReactiveCocoa + 35
  • frame 22108354: Swift 2.0b4: Curried initializer syntax #3: 0x001b4c00 ReactiveCocoastatic ReactiveCocoa.|> infix <A, B : ReactiveCocoa.ErrorType, C>(signal=<unavailable>, transform=<unavailable>) -> C) -> C + 128 at Signal.swift:133 frame #4: 0x001b5e14 ReactiveCocoaReactiveCocoa.collect <A, B : ReactiveCocoa.ErrorType>(signal=) -> ReactiveCocoa.Signal<Swift.Array, B> + 532 at Signal.swift:220
    frame 22108118: Apple Music: No Love Icon On CarPlay #5: 0x002113cd ReactiveCocoa_TFFFV13ReactiveCocoa14SignalProducer4liftU_S_9ErrorType__FGS0_Q_Q0__U_S1___FFGCS_6SignalQd__Qd_0__GS2_Q_Q0__GS0_Q_Q0__U_FTGVSs6SinkOfGOS_5EventQ_Q0___CS_19CompositeDisposable_T_U_FTGS2_Qd__Qd_0__PS_10Disposable__T_(signal=<unavailable>, innerDisposable=<unavailable>, outerDisposable=<unavailable>, transform=<unavailable>, observer=<unavailable>) + 285 at SignalProducer.swift:250 frame #6: 0x0020f228 ReactiveCocoaTPA__TFFFV13ReactiveCocoa14SignalProducer4liftU_S_9ErrorType__FGS0_Q_Q0__U_S1___FFGCS_6SignalQd__Qd_0__GS2_Q_Q0__GS0_Q_Q0__U_FTGVSs6SinkOfGOS_5EventQ_Q0___CS_19CompositeDisposable_T_U_FTGS2_Qd__Qd_0__PS_10Disposable__T + 200 at SignalProducer.swift:0
    frame 22107493: Xocde 7, can't run playground. Unable to create target for stub executable. unable to find executable for #7: 0x001f3001 ReactiveCocoaReactiveCocoa.SignalProducer.startWithSignal <A, B : ReactiveCocoa.ErrorType>(setUp=<unavailable>, self=<unavailable>)((ReactiveCocoa.Signal<A, B>, ReactiveCocoa.Disposable) -> ()) -> () + 465 at SignalProducer.swift:197 frame #8: 0x00211274 ReactiveCocoaTFFV13ReactiveCocoa14SignalProducer4liftU_S_9ErrorType__FGS0_Q_Q0__U_S1___FFGCS_6SignalQd__Qd_0__GS2_Q_Q0__GS0_Q_Q0__U_FTGVSs6SinkOfGOS_5EventQ_Q0___CS_19CompositeDisposable_T(observer=, outerDisposable=, self=, transform=) + 356 at SignalProducer.swift:251
    frame 22107374: Xcode should mark debugging messages originating from the main thread #9: 0x001f3f9a ReactiveCocoa_TPA__TFFV13ReactiveCocoa14SignalProducer4liftU_S_9ErrorType__FGS0_Q_Q0__U_S1___FFGCS_6SignalQd__Qd_0__GS2_Q_Q0__GS0_Q_Q0__U_FTGVSs6SinkOfGOS_5EventQ_Q0___CS_19CompositeDisposable_T_ + 234 at SignalProducer.swift:0 frame #10: 0x001f31c2 ReactiveCocoaReactiveCocoa.SignalProducer.startWithSignal <A, B : ReactiveCocoa.ErrorType>(setUp=, self=)((ReactiveCocoa.Signal<A, B>, ReactiveCocoa.Disposable) -> ()) -> () + 914 at SignalProducer.swift:210
    frame 22106545: automaticallyAdjustsScrollViewInsets doesn't change insets on iOS 9 #11: 0x001f369c ReactiveCocoaReactiveCocoa.SignalProducer.start <A, B : ReactiveCocoa.ErrorType>(sink=<unavailable>, self=<unavailable>)<C : Swift.SinkType>(C) -> ReactiveCocoa.Disposable + 428 at SignalProducer.swift:225 frame #12: 0x001f3c8d ReactiveCocoaReactiveCocoa.SignalProducer.start <A, B : ReactiveCocoa.ErrorType>(next=Some, error=None, completed=Some, interrupted=None, self=)(next : Swift.Optional<(A) -> ()>, error : Swift.Optional<(B) -> ()>, completed : Swift.Optional<() -> ()>, interrupted : Swift.Optional<() -> ()>) -> ReactiveCocoa.Disposable + 461 at SignalProducer.swift:237
    frame 22105831: Application windows move erratically with two monitors #13: 0x002051bf ReactiveCocoaReactiveCocoa.start <A, B : ReactiveCocoa.ErrorType>(producer=<unavailable>, next=Some, error=None, completed=Some, interrupted=None) -> ()>, error : Swift.Optional<(B) -> ()>, completed : Swift.Optional<() -> ()>, interrupted : Swift.Optional<() -> ()>))(producer : ReactiveCocoa.SignalProducer<A, B>) -> ReactiveCocoa.Disposable + 335 at SignalProducer.swift:1065 frame #14: 0x00089f60 rac-crash-radarpartial apply forwarder for ReactiveCocoa.start <A, B : ReactiveCocoa.ErrorType>((next : Swift.Optional<(A) -> ()>, error : Swift.Optional<(B) -> ()>, completed : Swift.Optional<() -> ()>, interrupted : Swift.Optional<() -> ()>))(producer : ReactiveCocoa.SignalProducer<A, B>) -> ReactiveCocoa.Disposable + 304 at ViewController.swift:0
    frame 22104678: Xcode7-beta4 (7A165t): libtool does not support -ios_version_min link editor flag #15: 0x001f4421 ReactiveCocoastatic ReactiveCocoa.|> infix <A, B : ReactiveCocoa.ErrorType, C>(producer=<unavailable>, transform=<unavailable>) -> C) -> C + 129 at SignalProducer.swift:302 frame #16: 0x00089059 rac-crash-radarrac_crash_radar.ViewController.viewDidLoad (self=0x79f8bc50)() -> () + 729 at ViewController.swift:22
    frame 22103812: TestFlight does not support yet apps with watchOS 2 #17: 0x000892a2 rac-crash-radar@objc rac_crash_radar.ViewController.viewDidLoad (rac_crash_radar.ViewController)() -> () + 34 at ViewController.swift:0 frame #18: 0x00e6fda4 UIKit-[UIViewController loadViewIfRequired] + 771
    frame 22102418: El Capitan Terminal password autofill suggestion #19: 0x00e70095 UIKit-[UIViewController view] + 35 frame #20: 0x00d61e85 UIKit-[UIWindow addRootViewControllerViewIfPossible] + 66
    frame 22100305: Safari does not see my valid Safari Developer cert #21: 0x00d6234c UIKit-[UIWindow _setHidden:forced:] + 287 frame #22: 0x00d62648 UIKit-[UIWindow _orderFrontWithoutMakingKey] + 49
    frame 22098225: Add indexOfObject:inSortedRange:options:usingComparator: method in Swift Array #23: 0x00d709b6 UIKit-[UIWindow makeKeyAndVisible] + 80 frame #24: 0x00d05ed8 UIKit-[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 3217
    frame 22095844: There's no reminder if you forget to unlock your watch #25: 0x00d09422 UIKit-[UIApplication _runWithMainScene:transitionContext:completion:] + 1639 frame #26: 0x00d2293e UIKit__84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke + 59
    frame 22094327: Mac OS X 10.10.4: Managing Gatekeeper's automated re-enable via a management profile #27: 0x00d0804a UIKit-[UIApplication workspaceDidEndTransaction:] + 155 frame #28: 0x07253c9e FrontBoardServices__37-[FBSWorkspace clientEndTransaction:]_block_invoke_2 + 71
    frame 22092373: Code Coverage is not accurately reported for code in Embedded Framework #29: 0x0725372f FrontBoardServices__40-[FBSWorkspace _performDelegateCallOut:]_block_invoke + 54 frame #30: 0x07265d7c FrontBoardServices__31-[FBSSerialQueue performAsync:]_block_invoke_2 + 30
    frame 22091468: Photos has issues playing certain videos that have been imported #31: 0x00409050 CoreFoundation__CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 16 frame #32: 0x003fe963 CoreFoundation__CFRunLoopDoBlocks + 195
    frame 22090264: The first proposal of Spotlights search-results should not change the first proposal as long as the following keystrokes still match the first proposal #33: 0x003fe7bb CoreFoundation__CFRunLoopRun + 2715 frame #34: 0x003fda5b CoreFoundationCFRunLoopRunSpecific + 443
    frame 22088607: Attempt to install enterprise build over app store build does nothing #35: 0x003fd88b CoreFoundationCFRunLoopRunInMode + 123 frame #36: 0x00d07a02 UIKit-[UIApplication _run] + 571
    frame 22086967: Spaces misbehaves in 10.11b4 and 5 #37: 0x00d0b106 UIKitUIApplicationMain + 1526 frame #38: 0x0008f144 rac-crash-radarmain + 180 at AppDelegate.swift:12
    frame 22084554: Audio indicator not appearing when web page plays video #39: 0x025f9ac9 libdyld.dylib`start + 1
    (lldb)

Product Version: Xcode 6.3 (6D570)
Created: 2015-04-13T21:19:12.091130
Originated: 2015-04-14T00:00:00
Open Radar Link: http://www.openradar.me/20523979