NullPointerException Crash In Generated class DeepLinkModuleRegistry-> Utils.readMatchIndexFromStrings

[lokeshkalal-gojek]

Issue Details

DeepLinkDispatch 6.2.2
Kotlin 1.9.25
KSP 1.9.25-1.0.20

• We started facing this after we updated the Deeplink Dispatch Library to 1.9.25-1.0.20 and moved to KSP from Kapt
• Seems like this is happening kind of one time for per/few users
• Utils.readMatchIndexFromStrings is called from generated class DeepLinkModuleRegistry and its not null.
• We checked the Generated code in DeepLinkModuleRegistry class and string passed is not null.

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'byte[] java.lang.String.getBytes(java.nio.charset.Charset)' on a null object reference at com.airbnb.deeplinkdispatch.base.Utils.readMatchIndexFromStrings(Utils.kt:47) at com.navigation.api.deeplink.DeepLinkModuleRegistry.<init>(DeepLinkModuleRegistry.java) at com.entrypoint.Initializer$Companion.getDeeplinkParsers(Initializer.kt:339) at com.entrypoint.Initializer.parser$entry_point_release(Initializer.kt:314) at com.entrypoint.Initializer.initNavigator(Initializer.kt:163) at com.entrypoint.Initializer.init(Initializer.kt:142) at com.home.internal.initializer.Initializers.init(Initializers.kt:95) at com.home.internal.initializer.Initializers.access$getModules$p(Initializers.kt:21) at com.home.internal.initializer.Initializers$optPureRegistration$1$2$1.invokeSuspend(Initializers.kt:49) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104) at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:15811)

`import com.airbnb.deeplinkdispatch.BaseRegistry;
import com.airbnb.deeplinkdispatch.base.Utils;

public final class DeepLinkModuleRegistry extends BaseRegistry {
public DeepLinkModuleRegistry() {
super(Utils.readMatchIndexFromStrings(new String[] {matchIndex0(),}),
new String[] {});
}

private static String matchIndex0() {
    return "it has big generated string";
}

}

`

[sergiomarqmoura]

@lokeshkalal-gojek Curious if you managed to solve it in any way? Currently facing the same.

[rossbacher]

Did that resolve itself. I was just looking into this and don't know why this would not work. My next advice would be to decompile the binary and look at what is going on there (use JadX tool for that e.g.)