[GHC] #7611: Rewrite rules application prevented by type variable application (map id vs. map (\x -> x))

[GHC]

#7611: Rewrite rules application prevented by type variable application (map id
vs. map (\x -> x))
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        Reporter:  nomeata           |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.6.2
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 Great!  Might you add a test case to make sure it ''stays'' fixed?

 Thanks

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7611#comment:11>
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