
T3592.hs:8:5:
    No instance for (Show (T a))
      arising from a use of `show'
    Possible fix: add an instance declaration for (Show (T a))
    In the expression: show
    In an equation for `f': f = show

T3592.hs:11:7:
    No instance for (Show a)
      arising from a use of `show'
    In the expression: show x
    In an equation for `g': g x = show x
