ghc/compiler/tests/typecheck/should_fail/tcfail001.stderr

   1
   2 tcfail001.hs:9:warning:
   3     Duplicate class assertion `[(`A',
   4                                     `a'),
   5                                 (`A',
   6                                     `a')]' in context:
   7         [(`A',
   8              `a'),
   9          (`A',
  10              `a')]
  11
  12 tcfail001.hs:9: Couldn't match the type
  13                     `PrelBase.[]' against `GHC.-> [t{-anj-}]'
  14     Expected: `[a{-ani-}]'
  15     Inferred: `[t{-anj-}] -> [t{-ank-}]'
  16     In an equation for function `op':
  17         `op PrelBase.[]
  18                     =   PrelBase.[]'
  19
  20
  21 Compilation had errors