[GHC] #10538: Simpilifier produces empty case in core, segfaults at runtime.

[GHC]

#10538: Simpilifier produces empty case in core, segfaults at runtime.
-------------------------------------+-------------------------------------
        Reporter:  sopvop            |                   Owner:  bgamari
            Type:  bug               |                  Status:  merge
        Priority:  highest           |               Milestone:  7.10.2
       Component:  Compiler          |                 Version:  7.10.2-rc1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime crash     |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by simonpj):

 * priority:  high => highest
 * status:  new => merge


Comment:

 Let's merge this to 7.10.2 if possible. It is a hard error.

 Simon

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10538#comment:6>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler