[GHC] #10072: Panic: generalised wildcards in RULES

[GHC]

#10072: Panic: generalised wildcards in RULES
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        Reporter:  thomasw           |                   Owner:  thomasw
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler (Type    |                 Version:  7.10.1-rc2
  checker)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  Compile-time      |               Test Case:
  crash                              |                Blocking:
      Blocked By:                    |  Differential Revisions:
 Related Tickets:                    |
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Comment (by simonpj):

 We should never generalise over wildcards!

 Thomas, are you ok to look into this one?  Yell if you need help.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10072#comment:2>
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