amplify-swift: Crash: "SWIFT TASK CONTINUATION MISUSE" in ShowHostedUISign[In/Out].execute

Describe the bug

We are receiving numerous crash logs in production related to the Amplify hosted UI. We are unable to reproduce the issue, however we believe it is similar to an Auth0 issue (see Steps To Reproduce).

_Concurrency/CheckedContinuation.swift > Fatal error > SWIFT TASK CONTINUATION MISUSE: execute(withDispatcher:environment:) tried to resume its continuation more than once, throwing cancelled!

OS Version: iOS 16.1.2 (20B110)
Report Version: 104

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Crashed Thread: 0

Application Specific Information:
_Concurrency/CheckedContinuation.swift > Fatal error

Thread 0 Crashed:
0   libswiftCore.dylib              0x30cc81d7c         _assertionFailure
1   libswift_Concurrency.dylib      0x32d69d55c         CheckedContinuation.resume
2   App                             0x1058f36bc         [inlined] CheckedContinuation.resume<T>
3   App                             0x1058f36bc         ShowHostedUISignIn.execute (ShowHostedUISignIn.swift:59)
4   App                             0x105b00d4c         HostedUIASWebAuthenticationSession.showHostedUI (HostedUIASWebAuthenticationSession.swift:43)
5   App                             0x105b0192c         thunk for closure
6   AuthenticationServices          0x3e26b5540         <redacted>
7   SafariServices                  0x3525b43bc         <redacted>
8   SafariServices                  0x352663020         <redacted>
9   SafariServices                  0x35263b2f4         <redacted>
10  CoreFoundation                  0x31901c700         __invoking___
11  CoreFoundation                  0x318fc8b68         -[NSInvocation invoke]
12  libdispatch.dylib               0x327b57fd8         _dispatch_client_callout
13  libdispatch.dylib               0x327b5ba58         _dispatch_block_invoke_direct
14  FrontBoardServices              0x3448053ac         __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__
15  FrontBoardServices              0x344804f48         -[FBSSerialQueue _targetQueue_performNextIfPossible]
16  FrontBoardServices              0x344807728         -[FBSSerialQueue _performNextFromRunLoopSource]
17  CoreFoundation                  0x31907df50         __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
18  CoreFoundation                  0x31908a328         __CFRunLoopDoSource0
19  CoreFoundation                  0x31900e20c         __CFRunLoopDoSources0
20  CoreFoundation                  0x319023ba4         __CFRunLoopRun
21  CoreFoundation                  0x319028ed0         CFRunLoopRunSpecific
22  GraphicsServices                0x38b6ab364         GSEventRunModal
23  UIKitCore                       0x31d6c43cc         -[UIApplication _run]
24  UIKitCore                       0x31d6c4030         UIApplicationMain
25  SwiftUI                         0x3204af010         OUTLINED_FUNCTION_895
26  SwiftUI                         0x320410168         block_copy_helper.1
27  SwiftUI                         0x3203f94b8         OUTLINED_FUNCTION_901
28  <redacted>                      0x202da44e0         [inlined] <redacted>App.$main
29  <redacted>                      0x202da44e0         main
30  <unknown>                       0x1b0908960         <redacted>

Note that we are using async/await APIs in our app to interact with Amplify Swift.

Steps To Reproduce

We are unable to reproduce the issue, however we believe it may be similar to an issue discovered in the Auth0 SDK:

https://github.com/auth0/Auth0.swift/issues/729

Expected behavior

The CheckedContinuation instance in the ShowHostedUISignIn.execute and ShowHostedUISignOut.execute functions should not be resumed twice. This may be a bug in ASWebAuthenticationSession, however it is causing production crashes so may need to be worked around within the Amplify Swift SDK.

Amplify Framework Version

2.21.3 and previous versions

Amplify Categories

Auth

Dependency manager

Swift PM

Swift version

5.7

CLI version

None

Xcode version

15.0.1 (15A507)

Relevant log output

No response

Is this a regression?

Regression additional context

No response

Platforms

iOS

OS Version

iOS16+ and iOS17+

Device

Various iOS devices

Specific to simulators

No response

Additional context

No response

About this issue

Original URL
State: closed
Created 8 months ago
Comments: 15 (9 by maintainers)

Most upvoted comments

The issue ticket is now closed as the fix has been released in the latest version 2.25.0. If you continue to encounter the problem, please don’t hesitate to reopen the ticket.

5d on Dec 8, 2023

@maxchuquimia We’ve released a new version (2.25.4) with the potential fix. Please reopen the issue if you have more questions. Thanks for your patience.

harsh62 on Jan 15, 2024

Thanks for letting us know and for the crash logs. We’re investigating and will provide an update when we can.

atierian on Jan 9, 2024

@maxchuquimia I will work on drafting a release. Amplify is due to release sometime later next week. I will post an update on the issue when that happens.

harsh62 on Nov 21, 2023

@maxchuquimia Thanks for providing more details… I am still not able to get this crash locally…

Nevertheless, I have made a small fix in #3363 … Is it possible if you can test the branch in the PR (fix/hosted-ui-crash) and let me know if it resolves the issue.

harsh62 on Nov 20, 2023