[GHC] #12124: Ambiguous type variable: it's a red herring!

[GHC]

#12124: Ambiguous type variable: it's a red herring!
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        Reporter:  drb226            |                Owner:
            Type:  bug               |               Status:  merge
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  typecheck/should_fail/T12124
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * status:  new => merge
 * testcase:   => typecheck/should_fail/T12124


Comment:

 All fixed.  I'm not sure if it's worth pushing to 8.0.2, but I think it'd
 be safe to do so.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12124#comment:5>
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