Getting NPE on kapt task :grimacing: (using Kotlin...

# compiler

[suresh]

Getting NPE on kapt task 😬 (using Kotlin 1.5.30, Lang Level 1.6 & Jdk 17). Has anybody seen this error?

> Task :kaptGenerateStubsKotlin
....

w: Language version 1.6 is experimental, there are no backwards compatibility guarantees for new language and library features
w: ATTENTION!
This build uses unsafe internal compiler arguments:

-XXLanguage:+JvmRecordSupport

This mode is not recommended for production use,
as no stability/compatibility guarantees are given on
compiler or generated code. Use it at your own risk!

w: Language version 1.6 is experimental, there are no backwards compatibility guarantees for new language and library features
Compilation with Kotlin compile daemon was not successful
java.lang.NullPointerException
        at org.jetbrains.kotlin.incremental.IncrementalJvmCache.addToClassStorage(IncrementalJvmCache.kt:494)
        at org.jetbrains.kotlin.incremental.IncrementalJvmCache.saveFileToCache(IncrementalJvmCache.kt:171)
        at org.jetbrains.kotlin.incremental.BuildUtilKt.updateIncrementalCache(buildUtil.kt:110)
        at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.updateCaches(IncrementalJvmCompilerRunner.kt:326)
        at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.updateCaches(IncrementalJvmCompilerRunner.kt:112)

[dmitriy.novozhilov]

Please file an issue
https://kotl.in/issue

[Tomasz Krakowiak]

You may also want to check out - https://youtrack.jetbrains.com/issue/KT-45545

[suresh]

@Tomasz Krakowiak thanks..i do have all the workaround mentioned (add-opens for strong encapsulation) and is working on lang version 1.5. Issue happens only with 1.6.

[suresh]

@dmitriy.novozhilov https://youtrack.jetbrains.com/issue/KT-48421