-- Common -- Exit code: OK Output: compiler/testData/multiplatform/inlineClasses/common.kt:3:1: warning: the expect/actual classes (including interfaces, objects, annotations, enums, actual typealiases) are an experimental feature. You can use -Xexpect-actual-classes flag to suppress this warning. expect inline class Foo1(val x: Int) ^ compiler/testData/multiplatform/inlineClasses/common.kt:3:8: warning: 'inline' modifier is deprecated. Use 'value' instead expect inline class Foo1(val x: Int) ^ compiler/testData/multiplatform/inlineClasses/common.kt:4:1: warning: the expect/actual classes (including interfaces, objects, annotations, enums, actual typealiases) are an experimental feature. You can use -Xexpect-actual-classes flag to suppress this warning. expect inline class Foo2(val y: String) ^ compiler/testData/multiplatform/inlineClasses/common.kt:4:8: warning: 'inline' modifier is deprecated. Use 'value' instead expect inline class Foo2(val y: String) ^ -- JVM -- Exit code: COMPILATION_ERROR Output: compiler/testData/multiplatform/inlineClasses/jvm.kt:5:1: error: actual class 'Foo2' has no corresponding expected declaration The following declaration is incompatible because modifiers are different (companion, inner, inline, value): public final expect inline class Foo2 actual class Foo2 actual constructor(actual val y: String) ^ -- JS -- Exit code: COMPILATION_ERROR Output: compiler/testData/multiplatform/inlineClasses/js.kt:5:1: error: actual class 'Foo2' has no corresponding expected declaration The following declaration is incompatible because modifiers are different (companion, inner, inline, value): public final expect inline class Foo2 actual class Foo2 actual constructor(actual val y: String) ^