Hello, everyone! My app got an error and the app i...

# jvm-ir-backend-feedback

[Agi Maulana]

Hello, everyone! My app got an error and the app is an Android app, but I think this is the right channel for this topic.

As long as I remember, the last thing I've done that might be contributing to this error is enabling the IR compiler on the Android Studio by the following line

kotlinOptions.useIR = true

The view model has a LiveData that hold Kotlin's Result class

fun doSomething(code: String, price: Long)  {
        repository.doX(code, price)
                .doOnComplete { _priceSubmission.postValue(Result.success(true)) }
                .doOnError { _priceSubmission.postValue(Result.failure(it.cause ?: it)) }
                .fromIo2Ui()
                .subscribe()
                .disposeOnCleared()
}

and the activity observing it by

viewModel.priceSubmission.observe(this) { result ->
            if (result.isSuccess) {
                setResult(RESULT_OK)
                finish()
            } else {
                val error = result.exceptionOrNull()
                if (error is HttpException && error.code() == 400) {
                    showDialog()
                } else {
                    ToastUtils.showNetworkFailureToast()
                }
            }
        }

I got an error on runtime

java.lang.VerifyError: Bad type on operand stack
Exception Details:
  Location:
    com/app/package/ui/MyActivity$onCreate$1.onChanged(Lkotlin/Result;)V @31: invokevirtual
  Reason:
    Type 'java/lang/Object' (current frame, stack[0]) is not assignable to 'kotlin/Result'
  Current Frame:
    bci: @31
    flags: { }
    locals: { 'com/app/package/ui/MyActivity$onCreate$1', 'kotlin/Result' }
    stack: { 'java/lang/Object' }
  Bytecode:
    0x0000000: 2b59 c600 09b6 001c a700 0557 0112 1eb8
    0x0000010: 0024 2b59 c600 09b6 001c a700 0557 01b6
    0x0000020: 001c b800 2899 0015 2ab4 000d 02b6 002e
    0x0000030: 2ab4 000d b600 31a7 004d 2b59 c600 09b6
    0x0000040: 001c a700 0557 0112 1eb8 0024 2b59 c600
    0x0000050: 09b6 001c a700 0557 01b6 001c b800 354d
    0x0000060: 2cc1 0037 9900 1a2c c000 37b6 003b 1101
    0x0000070: 90a0 000d 2ab4 000d b800 3ea7 0009 b200
    0x0000080: 44b6 0047 b1                           
  Stackmap Table:
    same_locals_1_stack_item_frame(@11,Object[#24])
    same_locals_1_stack_item_frame(@13,Object[#5])
    same_locals_1_stack_item_frame(@29,Object[#24])
    same_locals_1_stack_item_frame(@31,Object[#5])
    same_frame(@58)
    same_locals_1_stack_item_frame(@69,Object[#24])
    same_locals_1_stack_item_frame(@71,Object[#5])
    same_locals_1_stack_item_frame(@87,Object[#24])
    same_locals_1_stack_item_frame(@89,Object[#5])
    append_frame(@126,Object[#76])
    chop_frame(@132,1)


	at com.app.package.ui.MyActivity.onCreate(MyActivity.kt:36)
	at android.app.Activity.performCreate(Activity.java:7136)
	at android.app.Activity.performCreate(Activity.java:7127)

The 36th line of MyActivity is the priceSubmission observer

Is this Kotlin's IR backend issue? Thanks.

[Agi Maulana]

I've tried disabled the IR backend on the Android Studio, and bamm!! the error gone, the tests passed.

[Ivan Kubyshkin [JetBrains]]

Can you file an issue in Youtrack and attach the full code?

[Agi Maulana]

Hi, @Ivan Kubyshkin [JetBrains], I've posted it, this is it. Thanks!