[GHC] #9098: Don't use unsafe coerce when desugaring lazy pattersn

[GHC]

#9098: Don't use unsafe coerce when desugaring lazy pattersn
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        Reporter:  simonpj           |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"b5cf17f2f39993595e6ec7bd6bfe000c58a09fd8/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="b5cf17f2f39993595e6ec7bd6bfe000c58a09fd8"
 Improve desugaring of lazy pattern match

 This patch implements a simpler, and nicer, desugaring for
 lazy pattern matching, fixing Trac #9098
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9098#comment:2>
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