KtLint fails to run on JDK 15

[Tapchicoma]

Expected Behavior

KtLint fails to run on JDK 15

Observed Behavior

TBA

Steps to Reproduce

• Use JDK version 15
• run KtLint check via CLI

Kotlin added JDK support in 1.4.20 version. Update is blocked, because CLI fails to run with this Kotlin version.

[BraisGabin]

Kotlin added JDK support in 1.4.20 version. Update is blocked, because CLI fails to run with this Kotlin version.

Do you have more information about this? We are having exactly the same problem in detekt. Detekt and ktlint raise different exceptions but the problem seems the same: The executable retuned by shadowJaraExecutable fails when you run in on Java8. But it works with Java9 and onwards.

And it's not related with the compilation JDK.

ktlint:

Exception in thread "main" java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: Could not initialize class com.pinterest.ktlint.core.KtLint
	at java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.util.concurrent.FutureTask.get(FutureTask.java:192)
	at com.pinterest.ktlint.KtlintCommandLine.parallel(Main.kt:567)
	at com.pinterest.ktlint.KtlintCommandLine.parallel$default(Main.kt:541)
	at com.pinterest.ktlint.KtlintCommandLine.lintFiles(Main.kt:290)
	at com.pinterest.ktlint.KtlintCommandLine.run(Main.kt:256)
	at com.pinterest.ktlint.Main.main(Main.kt:69)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.pinterest.ktlint.core.KtLint
	at com.pinterest.ktlint.internal.FileUtilsKt.lintFile(FileUtils.kt:71)
	at com.pinterest.ktlint.KtlintCommandLine.process(Main.kt:387)
	at com.pinterest.ktlint.KtlintCommandLine.access$process(Main.kt:124)
	at com.pinterest.ktlint.KtlintCommandLine$lintFiles$2$1.call(Main.kt:281)
	at com.pinterest.ktlint.KtlintCommandLine$lintFiles$2$1.call(Main.kt:124)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

detekt:

java.lang.RuntimeException: java.util.zip.ZipException: invalid block type
	at org.jetbrains.kotlin.com.intellij.util.ExceptionUtil.rethrow(ExceptionUtil.java:116)
	at org.jetbrains.kotlin.com.intellij.ide.plugins.PluginManagerCore.loadDescriptorFromJar(PluginManagerCore.java:900)
	at org.jetbrains.kotlin.com.intellij.ide.plugins.PluginManagerCore.registerExtensionPointAndExtensions(PluginManagerCore.java:1867)
	at org.jetbrains.kotlin.com.intellij.core.CoreApplicationEnvironment.registerExtensionPointAndExtensions(CoreApplicationEnvironment.java:265)
	at org.jetbrains.kotlin.cli.jvm.compiler.CoreApplicationEnvironmentCompatKt.registerExtensionPointAndExtensionsEx(coreApplicationEnvironmentCompat.kt:17)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.registerApplicationExtensionPointsAndExtensionsFrom(KotlinCoreEnvironment.kt:537)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.createApplicationEnvironment(KotlinCoreEnvironment.kt:508)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.getOrCreateApplicationEnvironmentForProduction(KotlinCoreEnvironment.kt:465)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.createForProduction(KotlinCoreEnvironment.kt:419)
	at io.github.detekt.parser.KotlinEnvironmentUtilsKt.createKotlinCoreEnvironment(KotlinEnvironmentUtils.kt:44)
	at io.gitlab.arturbosch.detekt.core.settings.EnvironmentFacade$environment$2.invoke(EnvironmentAware.kt:38)
	at io.gitlab.arturbosch.detekt.core.settings.EnvironmentFacade$environment$2.invoke(EnvironmentAware.kt:22)
	at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
	at io.gitlab.arturbosch.detekt.core.settings.EnvironmentFacade.getEnvironment(EnvironmentAware.kt)
	at io.gitlab.arturbosch.detekt.core.ProcessingSettings.getEnvironment(ProcessingSettings.kt)
	at io.gitlab.arturbosch.detekt.core.KtTreeCompiler.<init>(KtTreeCompiler.kt:14)
	at io.gitlab.arturbosch.detekt.core.tooling.ParsingStrategyKt$inputPathsToKtFiles$1.invoke(ParsingStrategy.kt:24)
	at io.gitlab.arturbosch.detekt.core.tooling.ParsingStrategyKt$inputPathsToKtFiles$1.invoke(ParsingStrategy.kt)
	at io.gitlab.arturbosch.detekt.core.tooling.Lifecycle$analyze$filesToAnalyze$1.invoke(Lifecycle.kt:34)
	at io.gitlab.arturbosch.detekt.core.tooling.Lifecycle$analyze$filesToAnalyze$1.invoke(Lifecycle.kt:22)
	at io.gitlab.arturbosch.detekt.core.util.PerformanceMonitor.measure(PerformanceMonitor.kt:42)
	at io.gitlab.arturbosch.detekt.core.tooling.Lifecycle$DefaultImpls.measure(Lifecycle.kt:30)
	at io.gitlab.arturbosch.detekt.core.tooling.Lifecycle$DefaultImpls.analyze(Lifecycle.kt:34)
	at io.gitlab.arturbosch.detekt.core.tooling.DefaultLifecycle.analyze(Lifecycle.kt:57)
	at io.gitlab.arturbosch.detekt.core.tooling.AnalysisFacade$runAnalysis$1.invoke(AnalysisFacade.kt:43)
	at io.gitlab.arturbosch.detekt.core.tooling.AnalysisFacade$runAnalysis$1.invoke(AnalysisFacade.kt:21)
	at io.gitlab.arturbosch.detekt.core.tooling.ProcessingSpecSettingsBridgeKt.withSettings(ProcessingSpecSettingsBridge.kt:26)
	at io.gitlab.arturbosch.detekt.core.tooling.AnalysisFacade.runAnalysis$detekt_core(AnalysisFacade.kt:42)
	at io.gitlab.arturbosch.detekt.core.tooling.AnalysisFacade.run(AnalysisFacade.kt:25)
	at io.gitlab.arturbosch.detekt.cli.runners.Runner.call(Runner.kt:33)
	at io.gitlab.arturbosch.detekt.cli.CliRunner.run(CliRunner.kt:33)
	at io.gitlab.arturbosch.detekt.cli.CliRunner.run(CliRunner.kt:15)
	at io.gitlab.arturbosch.detekt.cli.Main.main(Main.kt:19)
Caused by: java.util.zip.ZipException: invalid block type
	at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:164)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
	at org.jetbrains.kotlin.com.intellij.openapi.vfs.CharsetToolkit.inputStreamSkippingBOM(CharsetToolkit.java:117)
	at org.jetbrains.kotlin.com.intellij.openapi.util.JDOMUtil.load(JDOMUtil.java:345)
	at org.jetbrains.kotlin.com.intellij.ide.plugins.PluginManagerCore.loadDescriptorFromJar(PluginManagerCore.java:880)
	... 31 more

[Tapchicoma]

@BraisGabin this what I see after updating KtLint to Kotlin 1.4.20+ and running it via CLI. If I run using java -jar ktlint-shadown-cli.jar then everything is ok.

From my not-so-deep investigation, something was changed in embeddable Kotlin compiler initialization internals that causing this.

[Tapchicoma]

@BraisGabin check PR for CLI crash workaround. Not the best solution, but it works 🤷‍♂️