[GHC] #4017: Unhelpful error message in GHCi

[GHC]

#4017: Unhelpful error message in GHCi
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        Reporter:  simonpj           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  lowest            |            Milestone:
       Component:  Compiler          |              Version:  6.12.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by supersven):

 * owner:  supersven => (none)


Comment:

 I investigated a few days, then got stuck and lost interest...

 I unassign this ticket so someone else may pick it up.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4017#comment:16>
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