Error:Kotlin: [Internal Error] org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: wrong code generated
org.jetbrains.kotlin.codegen.CompilationException Back-end (JVM) Internal error: Couldn't transform method node: main ([Ljava/lang/String;)V:
    @Lorg/jetbrains/annotations/NotNull;() // invisible, parameter 0
   L0
    ALOAD 0
    LDC "args"
    INVOKESTATIC kotlin/jvm/internal/Intrinsics.checkParameterIsNotNull (Ljava/lang/Object;Ljava/lang/String;)V
   L1
    LINENUMBER 4 L1
    GETSTATIC Foo.INSTANCE : LFoo;
    GETSTATIC Foo.INSTANCE : LFoo;
    POP
    DUP2
    INVOKEVIRTUAL Foo.getX ()I
    ICONST_1
    IADD
    INVOKEVIRTUAL Foo.setX (I)V
   L2
    LINENUMBER 5 L2
    RETURN
   L3
    LOCALVARIABLE args [Ljava/lang/String; L0 L3 0
    MAXSTACK = 4
    MAXLOCALS = 1