[GHC] #8714: ExistentialQuantification plus DeriveDataTypeable leads to core lint error

[GHC]

#8714: ExistentialQuantification plus DeriveDataTypeable leads to core lint error
-------------------------------------------------+-------------------------
        Reporter:  CoreyOConnor                  |            Owner:
            Type:  bug                           |           Status:
        Priority:  highest                       |  closed
       Component:  Compiler                      |        Milestone:  7.8.1
      Resolution:  fixed                         |          Version:
Operating System:  Unknown/Multiple              |  7.8.1-rc2
 Type of failure:  None/Unknown                  |         Keywords:
       Test Case:                                |     Architecture:
  simplCore/should_compile/T8714                 |  x86_64 (amd64)
        Blocking:                                |       Difficulty:
                                                 |  Unknown
                                                 |       Blocked By:
                                                 |  Related Tickets:
-------------------------------------------------+-------------------------
Changes (by thoughtpolice):

 * status:  merge => closed
 * resolution:   => fixed


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8714#comment:15>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler