ghc/tests/typecheck/should_fail/tcfail012.stderr

   1
   2 tcfail012.hs:3:
   3     Couldn't match the type `Bool' against `[apR]'
   4     Expected: Bool
   5     Inferred: [apR]
   6     In a pattern binding: True = []
   7
   8
   9 Compilation had errors