Swift 6 support

[honus]

Checklist

• I have looked into the Readme, Examples, and FAQ and have not found a suitable solution or answer.
• I have looked into the API documentation and have not found a suitable solution or answer.
• I have searched the issues and have not found a suitable solution or answer.
• I have searched the Auth0 Community forums and have not found a suitable solution or answer.
• I agree to the terms within the Auth0 Code of Conduct.

Describe the problem you'd like to have solved

Compiling in Swift 6 language mode results in concurrency errors like problems with Sendability of Credentials as discussed in this forum issue from 2022 https://community.auth0.com/t/credentialsmanager-credentials-and-sendability/95271

Describe the ideal solution

The SDK should be updated to compile without errors when used in Swift 6.

Alternatives and current workarounds

Importing with @preconcurrency may be a workaround but could be hiding issues in concurrent code.

Additional context

No response

[Widcket]

Hi @honus,

By "Compiling in Swift 6 language mode", do you mean changing the Swift version for the Auth0.swift target, or just your app's target?

Also, are you getting errors (compilation fails), or just warnings?

[honus]

App's target. Errors.

[honus]

Unfortunately my project isn't in a state where I can easily reproduce this issue right now. When I get a chance I'll try to get you more specific examples of problems.

[Widcket]

I just tried with the sample app (cleaning the cache beforehand) and was able to compile successfully:

Screen.Recording.2025-01-16.at.16.00.13.mov

[papekoja]

We also have problems with compiling in Swift 6, it works fine as soon as swift 5 is selected. The error we get is this:

[Widcket]

Hi @papekoja, that doesn't seem to be a compiler error, but a trap instruction.

[papekoja]

@Widcket yes you're right, I formulated myself badly

[papekoja]

It compiles completely fine and this happens when the Swift language version is set to 6

[Widcket]

@papekoja can you please post the stack trace (redacting things as needed)?

[papekoja]

There isn't any when this happens, unfortunately. The console is completely blank. I'm running Xcode 16.2 and Auth0 2.10.0 package version.

[Widcket]

Try cleaning Derived Data after switching to Swift 6.

[papekoja]

That did not help, unfortunately. I also tried the sample app you sent and that works fine for me as well in Swift 6. I find it hard to locate why we get this error since there aren't any error messages or stack trace. But I appreciate your responses

[Widcket]

I'm afraid that without more information there's not much we can do to troubleshoot this issue.