[GHC] #12167: <<loop>> when zip + unzipping a shadowed Vector type variable

[GHC]

#12167: <<loop>> when zip + unzipping a shadowed Vector type variable
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        Reporter:  markog            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:  x86_64
 Type of failure:  Incorrect result  |  (amd64)
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by nomeata):

 There is recursion; `x` depends on `xd`, and  `xd` depends on `x`. Note
 that `let` in Haskell is a `letrec`.

 Does that address your concerns?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12167#comment:1>
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