[GHC] #8236: Assertion failure of MarkWeak

[GHC]

#8236: Assertion failure of MarkWeak
-------------------------------------+------------------------------------
        Reporter:  kazu-yamamoto     |            Owner:
            Type:  bug               |           Status:  new
        Priority:  high              |        Milestone:  7.8.1
       Component:  Runtime System    |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  Runtime crash     |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+------------------------------------

Comment (by kazu-yamamoto):

 Even 6770663f764db76dbb7138ccb3aea0527d194151 is reverted, a web server
 (Mighty) got the same error. Probably, we have two problems, week
 reference and another thing.

 I will try to get the type of closure.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8236#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler