T11016.hs:5:19: warning: [-Wpartial-type-signatures (in -Wdefault)]
    • Found extra-constraints wildcard standing for ‘()’
    • In the type signature: f1 :: (?x :: Int, _) => Int

T11016.hs:8:22: warning: [-Wpartial-type-signatures (in -Wdefault)]
    • Found type wildcard ‘_’ standing for ‘Int’
    • In the type signature: f2 :: (?x :: Int) => _