There seems to be a problem when using Kotlin Result with Cf

Question

There seems to be a problem when using Kotlin Result with CfD by running the code below the first call will work and print success just fine however the second will throw an exception output in the reply ```public suspend fun main getImage fold onSuccess = println success onFailure = println failure Window LaunchedEffect null getImage fold onSuccess = println success onFailure = println failure public suspend fun getImage Result lt ByteReadChannel gt = runCatching lt ByteReadChannel gt client get lt ByteReadChannel gt <https i redd it 22bexa3ozc461 png> ```

Ali Albaali · Answer

Output of this ```success Exception in thread AWT EventQueue 0 coroutine 9 java lang ClassCastException kotlin Result incompatible with io ktor utils io ByteReadChannel at MainKt$main$4$1$1 invokeSuspend main kt 84 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 33 at io ktor util pipeline SuspendFunctionGun resumeRootWith SuspendFunctionGun kt 188 at io ktor util pipeline SuspendFunctionGun loop SuspendFunctionGun kt 144 at io ktor util pipeline SuspendFunctionGun access$loop SuspendFunctionGun kt 15 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith SuspendFunctionGun kt 90 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at io ktor util pipeline SuspendFunctionGun resumeRootWith SuspendFunctionGun kt 188 at io ktor util pipeline SuspendFunctionGun loop SuspendFunctionGun kt 144 at io ktor util pipeline SuspendFunctionGun access$loop SuspendFunctionGun kt 15 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith SuspendFunctionGun kt 90 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at io ktor util pipeline SuspendFunctionGun resumeRootWith SuspendFunctionGun kt 188 at io ktor util pipeline SuspendFunctionGun loop SuspendFunctionGun kt 144 at io ktor util pipeline SuspendFunctionGun access$loop SuspendFunctionGun kt 15 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith SuspendFunctionGun kt 90 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at io ktor util pipeline SuspendFunctionGun resumeRootWith SuspendFunctionGun kt 188 at io ktor util pipeline SuspendFunctionGun loop SuspendFunctionGun kt 144 at io ktor util pipeline SuspendFunctionGun access$loop SuspendFunctionGun kt 15 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith SuspendFunctionGun kt 90 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at kotlinx coroutines DispatchedTask run DispatchedTask kt 106 at java desktop java awt event InvocationEvent dispatch InvocationEvent java 313 at java desktop java awt EventQueue dispatchEventImpl EventQueue java 770 at java desktop java awt EventQueue$4 run EventQueue java 721 at java desktop java awt EventQueue$4 run EventQueue java 715 at java base java security AccessController doPrivileged AccessController java 704 at java base java security ProtectionDomain$JavaSecurityAccessImpl doIntersectionPrivilege ProtectionDomain java 85 at java desktop java awt EventQueue dispatchEvent EventQueue java 740 at java desktop java awt EventDispatchThread pumpOneEventForFilters EventDispatchThread java 203 at java desktop java awt EventDispatchThread pumpEventsForFilter EventDispatchThread java 124 at java desktop java awt EventDispatchThread pumpEventsForHierarchy EventDispatchThread java 113 at java desktop java awt EventDispatchThread pumpEvents EventDispatchThread java 109 at java desktop java awt EventDispatchThread pumpEvents EventDispatchThread java 101 at java desktop java awt EventDispatchThread run EventDispatchThread java 90 ```

jim · Answer

cc < Leland Richardson G > Potentially related to b 174056197

Leland Richardson [G] · Answer

< jim> i don t think so as there is nothing compose specific here this is very possibly an IR bug based on this minimal repro One could verify by running this through IR backend without the compose plugin