Looks like if I have `dokka-gradle-plugin:0.9.15` and `kotlin-gradle-plugin:1.1.50` my build blows u...

# dokka

[robfletcher]

Looks like if I have dokka-gradle-plugin:0.9.15 and kotlin-gradle-plugin:1.1.50 my build blows up with

Using Kotlin incremental compilation
e: java.lang.NoSuchMethodError: kotlin.reflect.jvm.internal.KClassImpl.getData()Lkotlin/reflect/jvm/internal/ReflectProperties$LazyVal;
        at kotlin.reflect.full.KClasses.getMemberProperties(KClasses.kt:149)
        at org.jetbrains.kotlin.compilerRunner.ArgumentUtils.convertArgumentsToStringList(ArgumentUtils.java:59)
        at org.jetbrains.kotlin.compilerRunner.ArgumentUtils.convertArgumentsToStringList(ArgumentUtils.java:47)
        at org.jetbrains.kotlin.compilerRunner.GradleCompilerRunner.compileWithDaemonOrFallback(GradleKotlinCompilerRunner.kt:147)
        at org.jetbrains.kotlin.compilerRunner.GradleCompilerRunner.compileWithDaemonOrFallback(GradleKotlinCompilerRunner.kt:52)
        at org.jetbrains.kotlin.compilerRunner.KotlinCompilerRunner.runCompiler(KotlinCompilerRunner.kt:127)
        at org.jetbrains.kotlin.compilerRunner.GradleCompilerRunner.runJvmCompiler(GradleKotlinCompilerRunner.kt:107)
        at org.jetbrains.kotlin.gradle.tasks.KotlinCompile.callCompiler$kotlin_gradle_plugin(Tasks.kt:326)
        at org.jetbrains.kotlin.gradle.tasks.KotlinCompile.callCompiler$kotlin_gradle_plugin(Tasks.kt:231)
        at org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile.execute(Tasks.kt:203)
        …

[semoro]

Just checked, couldn’t reproduce. Are you sure that it caused by Dokka? Are you using in process compilation of Kotlin?

[robfletcher]

I’m just running with Gradle and the problem disappears if I exclude the dokka plugin

[robfletcher]

This is the app https://github.com/spinnaker/keiko

[robfletcher]

Uncommenting lines 11 & 32 of build.gradle causes the issue

[semoro]

Thanks! Found the problem
There are two of them.
Kotlin Gradle plugin uses reflect from poisonous Gradle junkyard classloader

Dokka Gradle Plugin bundles kotlin-stdlib & kotlin-reflect inside it, making it impossible to fix this with rules.

[semoro]

Second issue can be fixed in Dokka 0.9.16

[semoro]

Opened ticket for it https://github.com/Kotlin/dokka/issues/219

[semoro]

Found quick workaround for you. Use newer version of gradle, such as 3.5 of greater

[robfletcher]

ah, yeah. I was meaning to do that upgrade. I know we’re pinned to an earlier one on some of our other apps due to legacy plugins but I don’t think I’m using any in this particular lib