VerifyError on Observable.zipArray

[galcyurio]

Stacktrace

Fatal Exception: java.lang.VerifyError: Rejecting class e.b.x0.e.e.l4 because it failed compile-time verification (declaration of 'e.b.x0.e.e.l4' appears in /data/user/0/com.my.company/app_dex/classes3.zip)
       at io.reactivex.Observable.zipArray + 4803(Observable.java:4803)
       at io.reactivex.Observable.zip + 4292(Observable.java:4292)
       at io.reactivex.rxkotlin.Observables.zip + 130(Observables.java:130)
       at com.my.company.MyActivity.subscribeIsValid + 119(MyActivity.java:119)
       at com.my.company.MyActivity.onCreate + 71(MyActivity.java:71)
       at android.app.Activity.performCreate + 6267(Activity.java:6267)
       at android.app.Instrumentation.callActivityOnCreate + 1107(Instrumentation.java:1107)
       at android.app.ActivityThread.performLaunchActivity + 2372(ActivityThread.java:2372)
       at android.app.ActivityThread.handleLaunchActivity + 2479(ActivityThread.java:2479)
       at android.app.ActivityThread.-wrap11(ActivityThread.java)
       at android.app.ActivityThread$H.handleMessage + 1347(ActivityThread.java:1347)
       at android.os.Handler.dispatchMessage + 102(Handler.java:102)
       at android.os.Looper.loop + 148(Looper.java:148)
       at android.app.ActivityThread.main + 5420(ActivityThread.java:5420)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run + 741(ZygoteInit.java:741)
       at com.android.internal.os.ZygoteInit.main + 631(ZygoteInit.java:631)

Proguard mapping

io.reactivex.internal.operators.observable.ObservableZip -> e.b.x0.e.e.l4:

Environment

• RxJava2: 2.2.0
• RxKotlin: 2.3.0
• RxAndroid: 2.1.0
• compileSdkVersion: 28
• targetSdkVersion: 28
• android gradle plugin: 3.5.0
• kotlin 1.3.50

Devices (error occurred)

• samsung SM-N980S (Android 6.0.1)
• oppo r7s (Android 5.1.1)

Details

I got this error report from Crashlytics. And I failed reproduce this error.

This error did not occur in previous releases. But after upgrading targetSdkVersion(26 -> 28), android gradle plugin(3.3.2 -> 3.5.0), and kotlin version(1.3.21 -> 1.3.50), this error occurred.
The versions of rx-related libraries have not been upgraded.

[akarnokd]

This is most likely a bug in your build environment/device and we can't do anything about it.

[galcyurio]

Thanks for answer @akarnokd. But this doesn't emit an error through onError, nor is it caught by RxJavaPlugins.setErrorHandler {...}. Is it also intended?

[akarnokd]

You are getting this error as a result of the VM trying to load the class file on the main thread and not part of a running RxJava sequence.

[leewp]

Thanks for answer @akarnokd. But this doesn't emit an error through onError,

when error happend, will call Exceptions.throwIfFatal(t); VerifyError extend LinkageError, LinkageError will be throw

/**
* Throws a particular {@code Throwable} only if it belongs to a set of "fatal" error varieties. These
* varieties are as follows:
*

*
• {@code VirtualMachineError}

*
• {@code ThreadDeath}

*
• {@code LinkageError}

*

* This can be useful if you are writing an operator that calls user-supplied code, and you want to
* notify subscribers of errors encountered in that code by calling their {@code onError} methods, but only
* if the errors are not so catastrophic that such a call would be futile, in which case you simply want to
* rethrow the error.
*
* @param t
* the {@code Throwable} to test and perhaps throw
* @see RxJava: StackOverflowError is swallowed (Issue #748)
*/