Tried to use k2 on internal project kotlin 1 7 10 1 error in

Question

Tried to use k2 on internal project kotlin 1 7 10 1 error init hides member of supertype UIComponent and needs override modifier I have a view class with `public init` method and supertype is from library where it `internal init` I would expect no error here if not known will create an issue 2 `New inference error NewConstraintError at Incorporate TypeVariable T == ft lt kotlin Any kotlin Any gt from Fix variable TypeVariable T from position Fix variable TypeVariable T ft lt kotlin Any kotlin Any gt lt CapturedType ` have no idea what does it mean slightly smiling face 3 `val closeModalWindow = fun progressModalStage close ` with K2 produces error Return type mismatch expected kotlin Unit actual kotlin Unit not critical as we can just specify type ` gt Unit` explicitly for variable 4 several issue with generics variances and java interop but I have no idea how to create a small reproducer without internal codebase Assignment type mismatch actual type is ft lt javafx collections ObservableList lt out ft lt OURTYPE OURTYPE gt gt javafx collections ObservableList lt out ft lt OURTYPE OURTYPE gt gt gt but ft lt javafx collections ObservableList lt ft lt CapturedType out OURTYPE CapturedType out OURTYPE gt gt javafx collections ObservableList lt ft lt CapturedType out OURTYPE CapturedType out OURTYPE gt gt gt was expected If something isn t known I will create issues but I will not be able to provide access to internal codebase FYI project using java javafx 17 and outdated tornadofx which latest version was published with kotlin 1 3 so issues can be from this weird stack also

mglukhikh · Answer

I think it would be great to create issues at least for 1 and 3 About 2 and 4 it will be problematic to analyze these cases without code however if you can show the line with error please do it

Oleg Yukhnevich · Answer

Ok will create issues BTW after somehow fixing code by removing those calls project fails with error ```org jetbrains kotlin backend common BackendException Backend Internal error Exception during IR lowering File being compiled DictionaryView kt The root cause java lang NullPointerException was thrown at org jetbrains kotlin types model TypeSystemContext$DefaultImpls lowerBoundIfFlexible TypeSystemContext kt 403 at org jetbrains kotlin backend common CodegenUtil reportBackendException CodegenUtil kt 239 at org jetbrains kotlin backend common CodegenUtil reportBackendException$default CodegenUtil kt 235 at org jetbrains kotlin backend common phaser PerformByIrFilePhase invokeSequential performByIrFile kt 68 at org jetbrains kotlin backend common phaser PerformByIrFilePhase invoke performByIrFile kt 55 at org jetbrains kotlin backend common phaser PerformByIrFilePhase invoke performByIrFile kt 41 at org jetbrains kotlin backend common phaser NamedCompilerPhase invoke CompilerPhase kt 96 at org jetbrains kotlin backend common phaser CompositePhase invoke PhaseBuilders kt 29 at org jetbrains kotlin backend common phaser NamedCompilerPhase invoke CompilerPhase kt 96 at org jetbrains kotlin backend common phaser CompilerPhaseKt invokeToplevel CompilerPhase kt 43 at org jetbrains kotlin backend jvm JvmIrCodegenFactory invokeLowerings JvmIrCodegenFactory kt 273 at org jetbrains kotlin codegen CodegenFactory$DefaultImpls generateModule CodegenFactory kt 44 at org jetbrains kotlin backend jvm JvmIrCodegenFactory generateModule JvmIrCodegenFactory kt 53 at org jetbrains kotlin backend jvm JvmIrCodegenFactory generateModuleInFrontendIRMode JvmIrCodegenFactory kt 300 at org jetbrains kotlin cli jvm compiler FirKotlinToJvmBytecodeCompiler runBackend FirKotlinToJvmBytecodeCompiler kt 352 at org jetbrains kotlin cli jvm compiler FirKotlinToJvmBytecodeCompiler compileModule FirKotlinToJvmBytecodeCompiler kt 175 at org jetbrains kotlin cli jvm compiler FirKotlinToJvmBytecodeCompiler compileModulesUsingFrontendIR FirKotlinToJvmBytecodeCompiler kt 133 at org jetbrains kotlin cli jvm compiler KotlinToJVMBytecodeCompiler compileModules$cli KotlinToJVMBytecodeCompiler kt 92 at org jetbrains kotlin cli jvm compiler KotlinToJVMBytecodeCompiler compileModules$cli$default KotlinToJVMBytecodeCompiler kt 60 at org jetbrains kotlin cli jvm K2JVMCompiler doExecute K2JVMCompiler kt 157 at org jetbrains kotlin cli jvm K2JVMCompiler doExecute K2JVMCompiler kt 52 at org jetbrains kotlin cli common CLICompiler execImpl CLICompiler kt 94 at org jetbrains kotlin cli common CLICompiler execImpl CLICompiler kt 43 at org jetbrains kotlin cli common CLITool exec CLITool kt 101 at org jetbrains kotlin incremental IncrementalJvmCompilerRunner runCompiler IncrementalJvmCompilerRunner kt 477 at org jetbrains kotlin incremental IncrementalJvmCompilerRunner runCompiler IncrementalJvmCompilerRunner kt 127 at org jetbrains kotlin incremental IncrementalCompilerRunner compileIncrementally IncrementalCompilerRunner kt 366 at org jetbrains kotlin incremental IncrementalCompilerRunner compileIncrementally$default IncrementalCompilerRunner kt 311 at org jetbrains kotlin incremental IncrementalCompilerRunner rebuild IncrementalCompilerRunner kt 110 at org jetbrains kotlin incremental IncrementalCompilerRunner compileImpl IncrementalCompilerRunner kt 200 at org jetbrains kotlin incremental IncrementalCompilerRunner compile IncrementalCompilerRunner kt 75 at org jetbrains kotlin daemon CompileServiceImplBase execIncrementalCompiler CompileServiceImpl kt 625 at org jetbrains kotlin daemon CompileServiceImplBase access$execIncrementalCompiler CompileServiceImpl kt 101 at org jetbrains kotlin daemon CompileServiceImpl compile CompileServiceImpl kt 1739 at java base jdk internal reflect NativeMethodAccessorImpl invoke0 Native Method at java base jdk internal reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 64 at java base jdk internal reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43 at java base java lang reflect Method invoke Method java 564 at java rmi sun rmi server UnicastServerRef dispatch UnicastServerRef java 359 at java rmi sun rmi transport Transport$1 run Transport java 200 at java rmi sun rmi transport Transport$1 run Transport java 197 at java base java security AccessController doPrivileged AccessController java 691 at java rmi sun rmi transport Transport serviceCall Transport java 196 at java rmi sun rmi transport tcp TCPTransport handleMessages TCPTransport java 587 at java rmi sun rmi transport tcp TCPTransport$ConnectionHandler run0 TCPTransport java 828 at java rmi sun rmi transport tcp TCPTransport$ConnectionHandler lambda$run$0 TCPTransport java 705 at java base java security AccessController doPrivileged AccessController java 391 at java rmi sun rmi transport tcp TCPTransport$ConnectionHandler run TCPTransport java 704 at java base java util concurrent ThreadPoolExecutor runWorker ThreadPoolExecutor java 1130 at java base java util concurrent ThreadPoolExecutor$Worker run ThreadPoolExecutor java 630 at java base java lang Thread run Thread java 832 ```

Oleg Yukhnevich · Answer

regarding 2 Line with error is 267 LSMResults and FileLSMResults are constructors of classes with 1 or 2 generic parameters a lot of generics here `results result` also returns generic of `results`

Oleg Yukhnevich · Answer

regarding 4 ``` result NarrativeArc NarrativeArcResults lt out NarrativeArc NarrativeArcResult gt result narrativeArcResultList returns List lt T gt items from javafx public final void setItems ObservableList lt S gt value items = FXCollections observableArrayList result narrativeArcResultList ``` error happens in last line

Oleg Yukhnevich · Answer

Not sure is it useful

Oleg Yukhnevich · Answer

created issues for 1 and 3