[GHC] #9949: zipWith too strict in second argument in GHC-7.10.0

[GHC]

#9949: zipWith too strict in second argument in GHC-7.10.0
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        Reporter:  Lemming           |                   Owner:  ekmett
            Type:  bug               |                  Status:  new
        Priority:  highest           |               Milestone:
       Component:  libraries/base    |                 Version:  7.10.1-rc1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Changes (by nomeata):

 * priority:  normal => highest


Comment:

 Hmm, that’s indeed a problem; `zip`’ing with the tail is a very common
 idiom. We shouldn’t release with that unsolved.

 @dfeuer, what is your take on this?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9949#comment:5>
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