FILE fqName:<root> fileName:/coercionInLoop.kt
  FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.String 
    BLOCK_BODY
      VAR name:a type:IrErrorType [val] 
        ERROR_CALL 'Unresolved reference: <Unresolved name: DoubleArray>#' type=IrErrorType
          CONST Int type=kotlin.Int value=5
      VAR name:x type:IrErrorType [val] 
        ERROR_CALL 'Unresolved reference: <Unresolved name: iterator>#' type=IrErrorType
      VAR name:i type:kotlin.Int [var] 
        CONST Int type=kotlin.Int value=0
      WHILE label=null origin=WHILE_LOOP
        condition: ERROR_CALL 'Unresolved reference: <Unresolved name: hasNext>#' type=IrErrorType
        body: BLOCK type=kotlin.Int origin=null
          WHEN type=kotlin.String origin=IF
            BRANCH
              if: CALL 'public final fun not (): kotlin.Boolean declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
                $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
                  arg0: ERROR_CALL 'Unresolved reference: <Unresolved name: get>#' type=IrErrorType
                    GET_VAR 'var i: kotlin.Int [var] declared in <root>.box' type=kotlin.Int origin=null
                  arg1: ERROR_CALL 'Unresolved reference: <Unresolved name: next>#' type=IrErrorType
              then: RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in <root>'
                STRING_CONCATENATION type=kotlin.String
                  CONST String type=kotlin.String value="Fail "
                  GET_VAR 'var i: kotlin.Int [var] declared in <root>.box' type=kotlin.Int origin=null
          VAR name:<unary> type:kotlin.Int [val] 
            GET_VAR 'var i: kotlin.Int [var] declared in <root>.box' type=kotlin.Int origin=null
          ERROR_CALL 'Unresolved reference: R|<local>/i|' type=IrErrorType
          GET_VAR 'val <unary>: kotlin.Int [val] declared in <root>.box' type=kotlin.Int origin=null
      RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in <root>'
        CONST String type=kotlin.String value="OK"
