[GHC] #7788: Recursive type family causes <<loop>>

[GHC]

#7788: Recursive type family causes <<loop>>
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        Reporter:  shachaf           |                   Owner:  simonpj
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler (Type    |                 Version:  7.6.2
  checker)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  Incorrect result  |               Test Case:
  at runtime                         |                Blocking:
      Blocked By:                    |  Differential Revisions:
 Related Tickets:                    |
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Changes (by thoughtpolice):

 * priority:  high => normal
 * milestone:  7.10.1 => 7.12.1


Comment:

 Since this seems to be a regression, but also something of a corner case
 involving recursive type families, I'm pushing this one out to 7.12 and
 'normal' priority (as 7.10 is feature complete).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7788#comment:11>
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