Override a protected @Composable method leads to Compilation Failed on iOS target

[ssttkkl]

Describe the bug
Override a protected @Composable method leads to Compilation failed on iOS target.

Affected platforms

• iOS

Versions

• Kotlin version*: 1.9.21
• Compose Multiplatform version*: 1.6.0-alpha01

To Reproduce

Just add this piece of code and run gradle task linkPodDebugFrameworkIosSimulatorArm64.

package io.ssttkkl.demo

import androidx.compose.material3.Text
import androidx.compose.runtime.Composable

abstract class AbstractGreeter {
    @Composable
    protected abstract fun Greeting()
}

class Greeter(val target: String) : AbstractGreeter() {
    @Composable
    override fun Greeting() {
        Text("Hello, $target! ")
    }
}

Got this error message:

e: Compilation failed: no implementation for FUN MISSING_DECLARATION name:Greeting visibility:public modality:FINAL <> () returnType:kotlin.Nothing
in io.ssttkkl.demo.AbstractGreeter

 * Source files: 
 * Compiler version: 1.9.21
 * Output kind: FRAMEWORK

Expected behavior
This code should be built successfully.

[igordmn]

Reproduced on iOS. Isn't reproducible on desktop.

[shishkin-pavel]

should be fixed since Compose Compiler 1.5.8.1 (Compose 1.6.0)

[okushnikov]

Please check the following ticket on YouTrack for follow-ups to this issue. GitHub issues will be closed in the coming weeks.