[GHC] #5821: SPECIALISE fails with a cryptic warning

[GHC]

#5821: SPECIALISE fails with a cryptic warning
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        Reporter:  rl                |                   Owner:  ezyang
            Type:  bug               |                  Status:  patch
        Priority:  normal            |               Milestone:  7.10.1
       Component:  Compiler          |                 Version:  7.5
      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 Revisions:  Phab:D610
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"c823b73cb2ca8e2392e2a4c48286879cc7baa51c/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="c823b73cb2ca8e2392e2a4c48286879cc7baa51c"
 Test Trac #5821

 And rename the wrongly named rebindable/T5821 to T5908 (Trac #5908)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5821#comment:14>
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