tcrun045.hs:11:10: error:
    • Illegal implicit parameter ‘?imp::Int’
    • In the instance declaration for ‘C Int’

tcrun045.hs:24:1: error:
    • Illegal implicit parameter ‘?imp::Int’
    • In the context: ?imp::Int
      While checking the super-classes of class ‘D’
      In the class declaration for ‘D’

tcrun045.hs:27:10: error:
    • Illegal implicit parameter ‘?imp::Int’
    • In the instance declaration for ‘D Int’