T16728b.hs:4:22: warning: [-Wpartial-type-signatures (in -Wdefault)]
    • Found type wildcard ‘_’ standing for ‘Bool’
    • In the type ‘a -> _’
      In the type signature: h :: forall a. a -> _

T16728b.hs:4:22: warning: [-Wpartial-type-signatures (in -Wdefault)]
    • Found type wildcard ‘_’ standing for ‘a’
      Where: ‘a’ is a rigid type variable bound by
               the inferred type of g :: a -> a
               at T16728b.hs:4:14
    • In the type ‘a -> _’
      In the type signature: g :: forall a. a -> _