T8542.hs:6:6: Warning:
    Literal 128 is out of the Int8 range -128..127
    If you are trying to write a large negative literal, use NegativeLiterals

T8542.hs:9:5: Warning:
    Literal 128 is out of the Int8 range -128..127
    If you are trying to write a large negative literal, use NegativeLiterals