I ve tried compiling KVision with K2 and get errors on compi

Question

I ve tried compiling KVision with K2 and get errors on compiling this class <https github com rjaros kvision blob master kvision modules kvision server javalin src jvmMain kotlin io kvision remote KVServiceManager kt>

Robert Jaros · Answer

I m using 1 9 20

Robert Jaros · Answer

This is the stacktrace <https pastebin com 7SzG9qUC>

Robert Jaros · Answer

Does it look like a known issue

dmitriy.novozhilov · Answer

Could you please check it with 2 0 0 Beta1 which was released today

Robert Jaros · Answer

It doesn t crash with 2 0 0 Beta1 It still doesn t compile but there is a normal error message

Robert Jaros · Answer

Still I m not sure how to address this issue The compiler doesn t allow default values in my expect declarations ```Default argument values inside expect declaration KVServiceManager are not allowed for methods actualized via fake override Possible fix is to remove default argument values in members```

dmitriy.novozhilov · Answer

cc < bobko>

Robert Jaros · Answer

But I can t have default values in my actuals as well ```The following declaration is incompatible because actual function cannot have default argument values they should be declared in the expected function```

Robert Jaros · Answer

Any way to fix this other then dropping default values which seems to work but I don t like this at all wink

bobko · Answer

> Default argument values inside expect declaration KVServiceManager are not allowed for methods actualized via fake override Possible fix is to remove default argument values in members < Robert Jaros> can you please post the full compilation message The compilation message mentions members at the end the members are enumerated on new lines I m interested in the member names It s this issue

Robert Jaros · Answer

```e file home rjaros git kvision kvision modules kvision server javalin src jsMain kotlin io kvision remote KVServiceManager kt 29 95 Default argument values inside expect declaration KVServiceManager are not allowed for methods actualized via fake override Possible fix is to remove default argument values in members expect fun lt reified RET gt bind noinline function suspend T gt RET method HttpMethod = route String = Unit expect fun lt reified PAR reified RET gt bind noinline function suspend T PAR gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified RET gt bind noinline function suspend T PAR1 PAR2 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified PAR4 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 PAR4 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified PAR4 reified PAR5 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 PAR4 PAR5 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified PAR4 reified PAR5 reified PAR6 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 PAR4 PAR5 PAR6 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 Any reified PAR2 Any gt bind noinline function suspend T ReceiveChannel lt PAR1 gt SendChannel lt PAR2 gt gt Unit route String = Unit expect fun lt reified PAR Any gt bind noinline function suspend T SendChannel lt PAR gt gt Unit route String = Unit expect fun lt reified RET gt bindTabulatorRemote noinline function suspend T Int Int List lt RemoteFilter gt List lt RemoteSorter gt String gt RemoteData lt RET gt route String = Unit```

Robert Jaros · Answer

And the other one for JVM target

Robert Jaros · Answer

```e file home rjaros git kvision kvision modules kvision server javalin src jvmMain kotlin io kvision remote KVServiceManager kt 58 5 Default argument values inside expect declaration KVServiceManager are not allowed for methods actualized via fake override Possible fix is to remove default argument values in members expect fun lt reified RET gt bind noinline function suspend T gt RET method HttpMethod = route String = Unit expect fun lt reified PAR reified RET gt bind noinline function suspend T PAR gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified RET gt bind noinline function suspend T PAR1 PAR2 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified PAR4 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 PAR4 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified PAR4 reified PAR5 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 PAR4 PAR5 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 reified PAR2 reified PAR3 reified PAR4 reified PAR5 reified PAR6 reified RET gt bind noinline function suspend T PAR1 PAR2 PAR3 PAR4 PAR5 PAR6 gt RET method HttpMethod = route String = Unit expect fun lt reified PAR1 Any reified PAR2 Any gt bind noinline function suspend T ReceiveChannel lt PAR1 gt SendChannel lt PAR2 gt gt Unit route String = Unit expect fun lt reified PAR Any gt bind noinline function suspend T SendChannel lt PAR gt gt Unit route String = Unit expect fun lt reified RET gt bindTabulatorRemote noinline function suspend T Int Int List lt RemoteFilter gt List lt RemoteSorter gt String gt RemoteData lt RET gt route String = Unit```

Robert Jaros · Answer

Not sure if both are identical

bobko · Answer

Minimized example ``` COMMON expect open class KVServiceManager protected inline fun bind route String = null PLATFORM open class KVServiceBinder internal inline fun bind route String actual open class KVServiceManager KVServiceBinder ``` I confirm that it s exactly what we prohibited in <https youtrack jetbrains com issue KT 62036> because it wasn t properly supported Right now I can only advise a workaround to declare an overload with substituted default args the workaround is mentioned in the issue If we see that this prohibition breaks a lot of code we might want to reconsider so thanks for letting us know But until then we d like to keep it prohibited expect actual classes is a Beta feature that s why we can do that

Robert Jaros · Answer

Thanks for the explanation I should be able to deal with this issue now