warning: ATTENTION! This build uses unsafe internal compiler arguments: -XXLanguage:+MultiPlatformProjects This mode is not recommended for production use, as no stability/compatibility guarantees are given on compiler or generated code. Use it at your own risk! warning: -Xfragments flag is not supported for language version < 2.0 compiler/testData/cli/jvm/hmpp/src/a.kt:1:1: 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 class A { ^ compiler/testData/cli/jvm/hmpp/src/a.kt:5:1: 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 class B { ^ compiler/testData/cli/jvm/hmpp/src/b.kt:1:1: 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. actual class A { ^ compiler/testData/cli/jvm/hmpp/src/c.kt:1:1: 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. actual class B { ^ OK