[GHC] #8314: ASSERTion at TcMType:809 fails on test polykinds/T6068

[GHC]

#8314: ASSERTion at TcMType:809 fails on test polykinds/T6068
------------------------------------+-------------------------------------
       Reporter:  goldfire          |             Owner:
           Type:  bug               |            Status:  new
       Priority:  normal            |         Milestone:
      Component:  Compiler          |           Version:  7.7
       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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 On a recent run through the testsuite on a debug build, testcase
 polykinds/T6068 was triggering an assertion failure on line 809 of
 TcMType, which reads

 {{{
 ASSERT2( isWantedCt orig_ct, ppr orig_ct )
 }}}

 in `try_zonk_fun_eq` in `zonkFlats` (just in case line numbers wibble a
 bit).

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8314>
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