[GHC] #10873: Bad error message for incorrect pattern synonym signature

[GHC]

#10873: Bad error message for incorrect pattern synonym signature
-------------------------------------+-------------------------------------
        Reporter:  mpickering        |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  8.0.1
       Component:  Compiler (Type    |                 Version:  7.10.2
  checker)                           |
      Resolution:                    |                Keywords:  newcomer
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by goldfire):

 Ich. Agreed that the error message is terrible. Also agreed with your
 analysis of this (confusing) situation.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10873#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler