Token.hs:48:2: Warning: Pattern match(es) are overlapped In the definition of `denull': denull x = ... Unparse.hs:165:2: Warning: Pattern match(es) are overlapped In the definition of `unparse_dc': unparse_dc sg _ = ... Build_itrm.hs:85:2: Warning: Pattern match(es) are overlapped In the definition of `let'': let' _ _ (Opnd _) = ...