[GHC] #9541: ghc: panic, "RegAlloc.Liveness.computeLivenss; SCCs aren't in reverse dependent order"

[GHC]

#9541: ghc: panic, "RegAlloc.Liveness.computeLivenss; SCCs aren't in reverse
dependent order"
-------------------------------------+-------------------------------------
              Reporter:  aleator     |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.2
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------

Comment (by slyfox):

 Chances it was fixed by #9303 (will be in ghc-7.8.4)

 Could you check if ghc-HEAD still has this bug,
 or maybe attach source sample here?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9541#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler