iOS binaries crash with latest nightly

[tdomhan]

iOS builds (aarch64-apple-ios) of Dioxus apps crash on nightly-2025-02-18 (ce36a96). The latest working version is nightly-2025-02-17 (5bc6231).
This problem only occurs when running on a real device, not when running the simulator.

To reproduce the error do the following:

# Create a new Dioxus app
 dx new test_app
# Create application bundle
rustup override set nightly-2025-02-18 && rustup target add aarch64-apple-ios && dx bundle --platform ios  --trace --device true

Next sign the application, i.e. via iOS App Signer and install on a real device.

The log console shows the following errors:

Snapshot generation request for bundleID: com.appidentifier rejected due to the app being denylisted.
...
Process exited: <FBApplicationProcess: 0x913f14000; app<com.appidentifier>:<invalid>> ->
Application process state changed for com.appidentifier: (null)
...

NSUnderlyingError = <NSError: 0x302466070; domain: NSPOSIXErrorDomain; code: 88>
...
SpringBoard	[app<com.appidentifier>:-1] Now flagged as pending exit for reason: Bootstrap failed

The problem must have been introduced somewhere between commits ce36a96 and 5bc6231. I'd be happy to also test any other rustc binaries or try provide any other information.

[tdomhan]

Probably unrelated, but looking for "Snapshot generation request for bundleID: com.appidentifier rejected due to the app being denylisted." one finds fyne-io/fyne#2270 and golang/go#47952 where there was a similar crash in golang. Could be unrelated as the error message is of course very unspecific.

[jieyouxu]

Is it possible for you to bisect between ce36a96 and 5bc6231? There shouldn't be too many commits in between, and the steps you described is a bit specific (and requires a real iOS device).

Or maybe someone with a real iOS device can try to bisect this...

[tdomhan]

Yeah, indeed it is non-trivial to reproduce in terms of setup. I can try but I have never used a custom rustc version and I'm not sure how easy it is to set up for iOS builds. If you have any pointers let me know.

[tdomhan]

Looks like I can use https://github.com/kennytm/rustup-toolchain-install-master to install specific commits.
Update: never mind. Artifacts don't exist for all commits.