Infinity loop crash when sending a tracking event property with a single-value array, e.g., ["test": [[1]]]

[datoutwo]

Expected Behavior

• Should not crash when event property's value is one single-value in the array.

Current Behavior

• App crash in the infinity loop of extension.

extension UnkeyedDecodingContainer {
    mutating func decode(_ type: [Any].Type) throws -> [Any] {

Possible Solution

• Flat data if it just one value

Steps to Reproduce

1. Change track event to Amplitude.testInstance.track(eventType: eventType, eventProperties: ["test": [[1]]])
2. Send the event.

Reproducible example project

1. Open AmplitudeSwiftUIExample.xcodeproj in the attach file.
2. Run in xcode.
3. Click button in the GENERAL EVENT.
4. Few seconds app crash in the UnkeyedDecodingContainer decode function.

Amplitude-Swift.zip

Environment

• SDK Version: v1.10.1
• OS Info: Xcode 15.4
• iOS Version: iPhone 15 pro 17.4 (every version should crash)

[crleona]

Hi @datoutwo, the example you've provided does not reproduce for me after checking with multiple iOS versions and multiple versions of Xcode. Are you able to provide a more specific reproduction case?

[datoutwo]

Hi @crleona, sorry the data should be

Amplitude.testInstance.track(eventType: eventType, eventProperties: ["test": [[1]]])  

Please check the video below and this infinity loop takes few seconds to cause the crash.
Also, please let me know if there's anything I can help to provide more data to reproduce it.

work.2024-11-11.at.22.29.19.mov

[crleona]

Hi @datoutwo, thank you for the report and the PR. I've added another fix that also adds some tests in #242. Could you please confirm that this also fixes the issue on your end?

[datoutwo]

Hi @crleona just check the pr it works like a charm from my side. Thanks for the speedy reply and fix.

[crleona]

The fix is released in 1.10.2.