On enabling k2 compiler. I get this issue. <https:...

# k2-adopters

[Gopi S]

On enabling k2 compiler. I get this issue. https://youtrack.jetbrains.com/issue/KT-63089/KJS-K2-IllegalArgumentException-source-must-not-be-null-for-inner-class-and-interface-as-type
Any workaround to validate k2 compiler until the fix comes.

[kirillrakhman]

Can you please post a full stacktrace?

[Gopi S]

org.jetbrains.kotlin.util.FileAnalysisException: While analysing /Users/gopi-2816/IdeaProjects/writer-multiplatform/core/src/commonMain/kotlin/com/test/test/ds/DoublyLinkedList.kt2015: java.lang.IllegalArgumentException: source must not be null
at org.jetbrains.kotlin.util.AnalysisExceptionsKt.wrapIntoFileAnalysisExceptionIfNeeded(AnalysisExceptions.kt:56)
at org.jetbrains.kotlin.fir.FirCliExceptionHandler.handleExceptionOnFileAnalysis(Utils.kt:171)
at org.jetbrains.kotlin.fir.pipeline.AnalyseKt.runCheckers(analyse.kt:44)
at org.jetbrains.kotlin.fir.pipeline.FirUtilsKt.resolveAndCheckFir(firUtils.kt:72)
at org.jetbrains.kotlin.fir.pipeline.FirUtilsKt.buildResolveAndCheckFirViaLightTree(firUtils.kt:83)
at org.jetbrains.kotlin.cli.js.klib.CompilerPipelineKt.compileModulesToAnalyzedFirWithLightTree(compilerPipeline.kt:196)
at org.jetbrains.kotlin.cli.js.K2JsIrCompiler.processSourceModuleWithK2(K2JsIrCompiler.kt:505)
at org.jetbrains.kotlin.cli.js.K2JsIrCompiler.doExecute(K2JsIrCompiler.kt:271)
at org.jetbrains.kotlin.cli.js.K2JSCompiler.doExecute(K2JSCompiler.java:181)
at org.jetbrains.kotlin.cli.js.K2JSCompiler.doExecute(K2JSCompiler.java:72)
at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:104)
at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:48)
at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:101)
at org.jetbrains.kotlin.incremental.IncrementalJsCompilerRunner.runCompiler(IncrementalJsCompilerRunner.kt:218)
at org.jetbrains.kotlin.incremental.IncrementalJsCompilerRunner.runCompiler(IncrementalJsCompilerRunner.kt:86)
at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.doCompile(IncrementalCompilerRunner.kt:477)
at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileImpl(IncrementalCompilerRunner.kt:400)
at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileNonIncrementally(IncrementalCompilerRunner.kt:281)
at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile(IncrementalCompilerRunner.kt:125)
at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile$default(IncrementalCompilerRunner.kt:109)
at org.jetbrains.kotlin.daemon.CompileServiceImplBase.execJsIncrementalCompiler(CompileServiceImpl.kt:579)
at org.jetbrains.kotlin.daemon.CompileServiceImplBase.access$execJsIncrementalCompiler(CompileServiceImpl.kt:105)
at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1715)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:598)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:844)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:721)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:720)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.IllegalArgumentException: source must not be null
at org.jetbrains.kotlin.diagnostics.KtDiagnosticReportHelpersKt.requireNotNull(KtDiagnosticReportHelpers.kt:68)
at org.jetbrains.kotlin.diagnostics.KtDiagnosticReportHelpersKt.reportOn(KtDiagnosticReportHelpers.kt:39)
at org.jetbrains.kotlin.diagnostics.KtDiagnosticReportHelpersKt.reportOn$default(KtDiagnosticReportHelpers.kt:31)
at org.jetbrains.kotlin.fir.analysis.js.checkers.declaration.FirJsExportDeclarationChecker.check$checkTypeParameter(FirJsExportDeclarationChecker.kt:39)
at org.jetbrains.kotlin.fir.analysis.js.checkers.declaration.FirJsExportDeclarationChecker.check(FirJsExportDeclarationChecker.kt:118)
at org.jetbrains.kotlin.fir.analysis.collectors.components.DeclarationCheckersDiagnosticComponent.check(DeclarationCheckersDiagnosticComponent.kt:119)
at org.jetbrains.kotlin.fir.analysis.collectors.components.DeclarationCheckersDiagnosticComponent.visitRegularClass(DeclarationCheckersDiagnosticComponent.kt:47)
at org.jetbrains.kotlin.fir.analysis.collectors.components.DeclarationCheckersDiagnosticComponent.visitRegularClass(DeclarationCheckersDiagnosticComponent.kt:18)
at org.jetbrains.kotlin.fir.declarations.FirRegularClass.accept(FirRegularClass.kt:46)
at org.jetbrains.kotlin.fir.analysis.collectors.CheckerRunningDiagnosticCollectorVisitor.checkElement(CheckerRunningDiagnosticCollectorVisitor.kt:24)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.access$checkElement(AbstractDiagnosticCollectorVisitor.kt:26)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitWithDeclarationAndReceiver(AbstractDiagnosticCollectorVisitor.kt:1322)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitClassAndChildren(AbstractDiagnosticCollectorVisitor.kt:83)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitRegularClass(AbstractDiagnosticCollectorVisitor.kt:88)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitRegularClass(AbstractDiagnosticCollectorVisitor.kt:26)
at org.jetbrains.kotlin.fir.declarations.FirRegularClass.accept(FirRegularClass.kt:46)
at org.jetbrains.kotlin.fir.declarations.impl.FirRegularClassImpl.acceptChildren(FirRegularClassImpl.kt:72)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitNestedElements(AbstractDiagnosticCollectorVisitor.kt:34)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitWithDeclarationAndReceiver(AbstractDiagnosticCollectorVisitor.kt:299)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitClassAndChildren(AbstractDiagnosticCollectorVisitor.kt:83)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitRegularClass(AbstractDiagnosticCollectorVisitor.kt:88)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitRegularClass(AbstractDiagnosticCollectorVisitor.kt:26)
at org.jetbrains.kotlin.fir.declarations.FirRegularClass.accept(FirRegularClass.kt:46)
at org.jetbrains.kotlin.fir.declarations.impl.FirFileImpl.acceptChildren(FirFileImpl.kt:63)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitNestedElements(AbstractDiagnosticCollectorVisitor.kt:34)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitFile(AbstractDiagnosticCollectorVisitor.kt:1097)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollectorVisitor.visitFile(AbstractDiagnosticCollectorVisitor.kt:26)
at org.jetbrains.kotlin.fir.declarations.FirFile.accept(FirFile.kt:40)
at org.jetbrains.kotlin.fir.analysis.collectors.AbstractDiagnosticCollector.collectDiagnostics(AbstractDiagnosticCollector.kt:37)
at org.jetbrains.kotlin.fir.pipeline.AnalyseKt.runCheckers(analyse.kt:32)

[Gopi S]

Hi @kirillrakhman If the screenshot is needed I can attach that also.

[kirillrakhman]

Thank you, the stack trace is enough. I've added it to the issue you linked.

[kirillrakhman]

It seems the compiler throws an exception when trying to report

Exported declaration uses non-exportable {0} type: ''{1}''

Does this help you to add a workaround to your code?

Also, does K1 not report a similar error? If not and you think the new error is inappropriate, you should file an additional issue.

[Gopi S]

Hi, K1 did not have a similar error. I have annotated the DoublyLinkedList class with @JSExport. IMO the inner class does not have to be marked with @JSExport, even If I do so, I get this error "@JsExport is only allowed on files and top-level declarations"

[Gopi S]

I could not figure out the workaround.

[kirillrakhman]

cc @Sasha

[Sasha]

I’m afraid the only workaround is to move the inner class to the top level and pass the outer class as a parameter to the inner class