[GHC] #10602: ghc panic: Template variable unbound in rewrite rule when compiling with -O2

[GHC]

#10602: ghc panic: Template variable unbound in rewrite rule when compiling with
-O2
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        Reporter:  pacak             |                   Owner:  bgamari
            Type:  bug               |                  Status:  infoneeded
        Priority:  highest           |               Milestone:  7.10.2
       Component:  Compiler          |                 Version:  7.10.2-rc2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"a6359f2629024d67fc82a7d41c67d5d89d2d3a3d/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a6359f2629024d67fc82a7d41c67d5d89d2d3a3d"
 Add testcase for #10602
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10602#comment:14>
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