-- Common --
Exit code: OK
Output:
compiler/testData/multiplatform/weakIncompatibilityWithoutActualModifier/common.kt:1:1: warning: 'expect'/'actual' classes (including interfaces, objects, annotations, enums, and 'actual' typealiases) are in Beta. Consider using the '-Xexpect-actual-classes' flag to suppress this warning. Also see: https://youtrack.jetbrains.com/issue/KT-61573
expect class Foo
^^^^^^

-- JVM --
Exit code: COMPILATION_ERROR
Output:
compiler/testData/multiplatform/weakIncompatibilityWithoutActualModifier/jvm.kt:1:11: error: declaration must be marked with 'actual'.
interface Foo
          ^^^
